service manual - york

SM-16006

SERVICE MANUAL

INVERTER-DRIVEN MULTI-SPLIT SYSTEMHEAT PUMP AIR CONDITIONERS

Service Manual

< Indoor Units > DOAS (Dedicated Outdoor Air System) Type (H,Y)DOA096B21S

SM-16006-rev.1 i

Important Notice Johnson Controls Inc. pursues a policy of continuing improvement in design and performance in its

products. As such, Johnson Controls Inc. reserves the right to make changes at any time without prior notice.

Johnson Controls Inc. cannot anticipate every possible circumstance that might involve a potential hazard.

This heat pump air conditioning unit is designed for standard air conditioning applications only. Do not use this unit for anything other than the purposes for which it was intended for.

The installer and system specialist shall safeguard against leakage in accordance with local pipefitter and electrical codes. The following standards may be applicable, if local regulations are not available. International Organization for Standardization: (ISO 5149 or European Standard, EN 378). No part of this manual may be reproduced in any way without the expressed written consent of Johnson Controls Inc.

This heat pump air conditioning unit will be operated and serviced in the United States of America and comes with a full complement of the appropriate Safety, Danger, and Caution, warnings.

If you have questions, please contact your distributor or dealer. This manual provides common descriptions, basic and advanced information to maintain and service

this heat pump air conditioning unit which you operate as well for other models. This heat pump air conditioning unit has been designed for a specific temperature range. For optimum

performance and long life, operate this unit within the range limits. This manual should be considered as a permanent part of the air conditioning equipment and should

remain with the air conditioning equipment.

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Product Inspection upon Arrival1. Upon receiving this product, inspect it for any damages incurred in transit. Claims for damage, either

apparent or concealed, should be filed immediately with the shipping company.2. Check the model number, electrical characteristics (power supply, voltage, and frequency rating), and

any accessories to determine if they agree with the purchase order.3. The standard utilization for this unit is explained in these instructions. Use of this equipment for

purposes other than what it designed for is not recommended. 4. Please contact your local agent or contractor as any issues involving installation, performance, or

maintenance arise. Liability does not cover defects originating from unauthorized modifications performed by a customer without the written consent of Johnson Controls, Inc. Performing any mechanical alterations on this product without the consent of the manufacturer will render your warranty null and void.

SM-16006-rev.1 iii

1. Introduction

This Service Manual concentrates on the heat pump air conditioning units. Read this manual carefully before performing service.

2. Important Safety Instructions

This manual should be considered as a permanent part of the air conditioning equipment and should remain with the air conditioning equipment.

(Transportation/Installation Work) > (Refrigerant Piping Work) > (Electrical Wiring Work) > (Ref. Charge Work) > (Test Run) > (User)

Signal Words

Indicates a hazardous situation that, if not avoided, could result in death or serious injury.

Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.

Indicates information considered important, but not hazard-related (for example, messages relating to property damage).

General PrecautionsTo reduce the risk of serious injury or death, read these instructions thoroughly and follow all warnings or cautions included in all manuals that accompanied the product and are attached to the unit. Refer back to these instructions as needed.

This system should be installed by personnel certified by Johnson Controls, Inc. Personnel must be qualified according to local, state and national building and safety codes and regulations. Incorrect installation could cause leaks, electric shock, fire or explosion. In areas where Seismic ‘’Performance requirements are specified, the appropriate measures should be taken during installation to guard against possible damage or injury that might occur in an earthquake if the unit is not installed correctly, injuries may occur due to a falling unit.

Use appropriate Personal Protective Equipment (PPE), such as gloves and protective goggles and, where appropriate, have a gas mask nearby. Also use electrical protection equipment and tools suited for electrical operation purposes. Keep a quenching cloth and a fire extinguisher nearby during brazing. Use care in handling, rigging, and setting of bulky equipment.

When transporting, be careful when picking up, moving and mounting these units. Although the unit may be packed using plastic straps, do not use them for transporting the unit from one location to another. Do not stand on or put any material on the unit. Get a partner to help, and bend with your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut fingers, so wear protective gloves.

Do not touch or adjust any safety devices inside the indoor or outdoor units. All safety features, disengagement, and interlocks must be in place and functioning correctly before the equipment is put into operation. If these devices are improperly adjusted or tampered with in any way, a serious accident can occur. Never bypass or jump-out any safety device or switch.

Johnson Controls will not assume any liability for injuries or damage caused by not following steps outlined or described in this manual. Unauthorized modifications to Johnson Controls products are prohibited as they…

May create hazards which could result in death, serious injury or equipment damage. Will void product warranties. May invalidate product regulatory certifications. May violate OSHA standards.

iv SM-16006-rev.1

Take the following precautions to reduce the risk of property damage.

Be careful that moisture, dust, or variant refrigerant compounds not enter the refrigerant cycle during installation work. Foreign matter could damage internal components or cause blockages.

If air filters are required on this unit, do not operate the unit without the air filter set in place. If the air filter is not installed, dust may accumulate and breakdown may result.

Do not install this unit in any place where silicon gases can coalesce. If the silicon gas molecules attach themselves to the surface of the heat exchanger, the finned surfaces will repel water. As a result, any amount of drainage moisture condensate can overflow from the drain condensate pan and could run inside of the electrical box, possibly causing electrical failures.

When installing the unit in a hospital or other facility where electromagnetic waves are generated from nearby medical and/or electronic devices, be prepared for noise and electronic interference Electromagnetic Interference (EMI). Do not install where the waves can directly radiate into the electrical box, controller cable, or controller. Inverters, appliances, high-frequency medical equipment, and radio communications equipment may cause the unit to malfunction. The operation of the unit may also adversely affect these same devices. Install the unit at least 10 ft. (approximately 3m) away from such devices.

When a wireless controller is used, locate at a distance of at least 3.3 ft. (approximately 1m) between the indoor unit and electric lighting. If not, the receiver part of the unit may have difficulty receiving operation commands.

Do not install the unit in any location where animals and plants can come into direct contact with the outlet air stream. Exposure could adversely affect the animals and plants.

Do not install the unit with any downward slope to the side of the drain boss. If you do, you may have drain water flowing back which may cause leaks.

Be sure the drain hose discharges water properly. If connected incorrectly, it may cause leaks. Do not install the unit in any place where oil can seep onto the units, such as table or seating areas in

restaurants, and so forth. For these locations or social venues, use specialized units with oil-resistant features built into them. In addition, use a specialized ceiling fan designed for restaurant use. These specialized oil-resistant units can be ordered for such applications. However, in places where large quantities of oil can splash onto the unit, such as a factory, even the specialized units cannot be used. These products should not be installed in such locations.

If the wired controller is installed in a location where electromagnetic radiation is generated, make sure that the wired controller is shielded and cables are sleeved inside conduit tubing.

If there is a source of electrical interference near the power source, install noise suppression equipment (filter).

During the test run, check the unit’s operation temperature. If the unit is used in an environment where the temperature exceeds the operation boundary, it may cause severe damage. Check the operational temperature boundary in the manual. If there is no specified temperature, use the unit within the operational temperature boundary of 35 to 104°F (0 to 40°C).

Read installation and appropriate user manuals for connection with PC or peripheral devices. If a warning window appears on the PC, the product stops, does not work properly or works intermittently, immediately stop using the equipment.

SM-16006-rev.1 v

Installation Precautions

To reduce the risk of serious injury or death, the following installation precautions must be followed.

When installing the unit into… A wall: Make sure the wall is strong enough to hold the unit’s weight. It may be necessary to

construct a strong wood or metal frame to provide added support. A room: Properly insulate any refrigerant tubing run inside a room to prevent “sweating” that can

cause dripping and water damage to wall and floors. Damp or uneven areas: Use a raised concrete pad or concrete blocks to provide a solid, level

foundation for the unit to prevent water damage and abnormal vibration. An area with high winds: Securely anchor the outdoor unit down with bolts and a metal frame.

Provide a suitable air baffle. A snowy area (only for Heat Pump Model): Install the outdoor unit on a raised platform that is

higher than drifting snow. Provide snow vents. If the remote sensors are not used with this controller, then do not install this controller…

in a room where there is no thermostat. where the unit is exposed to direct sunshine or direct light. where the unit will be in close proximity to a heat source. where hot/cold air from the outdoors, or a draft from elsewhere (such as air vents, diffusers or

grilles) can affect air circulation. in areas with poor air circulation and ventilation.

Do not install the unit in the following places. Doing so can result in an explosion, fire, deformation, corrosion, or product failure.

Explosive or flammable atmosphere. Where fire, oil, steam, or powder can directly enter the unit, such as in close proximity or directly

above a kitchen stove. Where oil (including machinery oil) may be present. Where corrosive gases such as chlorine, bromine, or sulfide can accumulate, such as near a hot

tub or hot spring. Where dense, salt-laden airflow is heavy, such as in coastal regions. Where the air quality is of high acidity. Where harmful gases can be generated from decomposition.

Do not position the drain pipe for the indoor unit near any sanitary sewers where corrosive gases may be present. If you do, toxic gases can seep into breathable air spaces and can cause respiratory injuries. If the drainpipe is installed incorrectly, water leakage and damage to the ceiling, floor, furniture, or other possessions may result. If condensate piping becomes clogged, moisture can back up and can drip from the indoor unit. Do not install the indoor unit where such dripping can cause moisture damage or uneven locations: Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the unit to prevent water damage and abnormal vibration.

Before performing any brazing work, be sure that there are no flammable materials or open flames nearby.

Perform a test run to ensure normal operation. Safety guards, shields, barriers, covers, and protective devices must be in place while the compressor/unit is operating. During the test run, keep fingers and clothing away from any moving parts.

Clean up the site when finished, remembering to check that no metal scraps or bits of wiring have been left inside the unit being installed.

During transportation, do not allow the backrest of the forklift make contact with the unit, otherwise, it may cause damage to the heat exchanger and also may cause injury when stopped or started suddenly.

Remove gas inside the closing pipe when the brazing work is performed. If the brazing filler metal is melted with remaining gas inside, the pipes will be blown off and it may cause injury.

Be sure to use nitrogen gas for an airtight test. If other gases such as oxygen gas, acetylene gas or fluorocarbon gas are accidentally used, it may cause explosion or gas intoxication.

After installation work for the system has been completed, explain the “Safety Precautions,” the proper use and maintenance of the unit to the customer according to the information in all manuals that came with the system. All manuals and warranty information must be given to the user or left near the Indoor Unit.

vi SM-16006-rev.1

Refrigerant Precautions

To reduce the risk of serious injury or death, the following refrigerant precautions must be followed.

As originally manufactured, this unit contains refrigerant installed by Johnson Controls. Johnson Controls uses only refrigerants that have been approved for use in the unit’s intended home country or market. Johnson Controls distributors similarly are only authorized to provide refrigerants that have been approved for use in the countries or markets they serve. The refrigerant used in this unit is identified on the unit’s faceplate and/or in the associated manuals. Any additions of refrigerant into this unit must comply with the country’s requirements with regard to refrigerant use and should be obtained from Johnson Controls distributors. Use of any non-approved refrigerant substitutes will void the warranty and will increase the potential risk of injury or death.

If installed in a small room, take measures to prevent the refrigerant from exceeding the maximum allowable concentration in the event that refrigerant gases should escape. Refrigerant gases can cause asphyxiation (0.026 lbs/ft3 (0.42 kg/m3) based on ISO 5149 for R410A). Consult with your distributor for countermeasures (ventilation system and so on). If refrigerant gas has leaked during the installation work, ventilate the room immediately.

Check the design pressure for this product is 601 psi (4.15MPa). The pressure of the refrigerant R410A is 1.4 times higher than that of the refrigerant R22. Therefore, the refrigerant piping for R410A shall be thicker than that for R22. Make sure to use the specified refrigerant piping. If not, the refrigerant piping may rapture due to an excessive refrigerant pressure. Besides, pay attention to the piping thickness when using copper refrigerant piping. The thickness of copper refrigerant piping differs depending on its material.

The refrigerant R410A is adopted. The refrigerant oil tends to be affected by foreign matters such as moisture, oxide film, (or fat). Perform the installation work with care to prevent moisture, dust, or different refrigerant from entering the refrigerant cycle. Foreign matter can be introduced into the cycle from such parts as expansion valve and the operation may be unavailable.

To avoid the possibility of different refrigerant or refrigerant oil being introduced into the cycle, the sizes of the charging connections have been changed from R407C type and R22 type. It is necessary to prepare the appropriate tools before performing installation work.

Use refrigerant pipes and joints which are approved for use with R410A. A compressor/unit comprises a pressurized system. Never loosen threaded joints while the system is

under pressure and never open pressurized system parts. Before installation is complete, make sure that the refrigerant leak test has been performed. If

refrigerant gases escape into the air, turn OFF the main switch, extinguish any open flames and contact your service contractor. Refrigerant (Fluorocarbon) for this unit is odorless. If the refrigerant should leak and come into contact with open flames, toxic gas could be generated. Also, because the fluorocarbons are heavier than air, they settle to the floor, which could cause asphyxiation.

When installing the unit, and connecting refrigerant piping, keep all piping runs as short as possible, and make sure to securely connect the refrigerant piping before the compressor starts operating. If the refrigerant piping is not connected and the compressor activates with the stop valve opened, the refrigerant cycle will become subjected to extremely high pressure, which can cause an explosion or fire.

Tighten the flare nut with a torque wrench in the specified manner. Do not apply excessive force to the flare nut when tightening. If you do, the flare nut can crack and refrigerant leakage may occur.

When maintaining, relocating, and disposing of the unit, dismantle the refrigerant piping after the compressor stops.

When pipes are removed out from under the piping cover, after the insulation work is completed, cover the gap between the piping cover and pipes by a packing (field-supplied). If the gap is not covered, the unit may be damaged if snow, rain water or small animals enter the unit.

Do not apply an excessive force to the spindle valve at the end of opening. Otherwise, the spindle valve flies out due to refrigerant pressure. At the test run, fully open the gas and liquid valves, otherwise, these devices will be damaged. (It is closed before shipment.)

If the arrangement for outdoor units is incorrect, it may cause flowback of the refrigerant and result in failure of the outdoor unit.

The refrigerant system may be damaged if the slope of the piping connection kit exceeds +15o.

SM-16006-rev.1 vii

Electrical Precautions

Take the following precautions to reduce the risk of electric shock, fire or explosion resulting in serious injury or death.

Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause serious injury or death.

Perform all electrical work in strict accordance with this manual and all the relevant regulatory standards.

Before servicing, open and tag all disconnect switches. Never assume electrical power is disconnected. Check with meter and equipment.

Only use electrical protection equipment and tools suited for this installation. Insulate a wired controller against moisture and temperature extremes. Use specified cables between units. The new air conditioner may not function normally in the following instances:

If electrical power for the new air conditioner is supplied from the same transformer as the device* referred to below.

If the power source cables for this device* and the new air conditioner unit are located in close proximity to each other.

Device*: (Example): A lift, container crane, rectifier for electric railway, inverter power device, arc furnace, electric furnace, large-sized induction motor and large-sized switch.

Regarding the cases mentioned above, surge voltage may be inducted into the power supply cables for the packaged air conditioner due to a rapid change in power consumption of the device and an activation of a switch.Check field regulations and standards before performing electrical work in order to protect the power supply for the new air conditioner unit.

Communication cabling shall be a minimum of AWG18 (0.82mm2), 2-Conductor, Stranded Copper. Shielded cable must be considered for applications and routing in areas of high EMI and other sources of potentially excessive electrical noise to reduce the potential for communication errors. When shielded cabling is applied, proper bonding and termination of the cable shield is required as per Johnson Controls guidelines. Plenum and riser ratings for communication cables must be considered per application and local code requirements.

The polarity of the input terminals is important, so be sure to match the polarity when using contacts that have polarity.

Use an exclusive power supply for the air conditioner at the unit’s rated voltage. Highly dangerous electrical voltages may be used in this system. Carefully refer to the wiring diagram

and these instructions when wiring. Improper connections and inadequate grounding can cause serious injury or death.

Before installing the controller or remote devices, ensure that the indoor and outdoor unit operation has been stopped. Further, be sure to wait at least five minutes before turning off the main power switch to the indoor or outdoor units. Otherwise, water leakage or electrical breakdown may result.

Do not open the service cover or access panel to the indoor or outdoor units without turning OFF the main power supply. Before connecting or servicing the controller or cables to indoor or outdoor units, open and tag all disconnect switches. Never assume electrical power is disconnected. Check with a meter and equipment.

This equipment can be installed with a Ground Fault Circuit Breaker (GFCI), which is a recognized measure for added protection to a properly grounded unit. Install appropriate sized breakers / fuses / overcurrent protection switches, and wiring in accordance with local, state and NEC codes and requirements. The equipment installer is responsible for understanding and abiding by applicable codes and requirements.

viii SM-16006-rev.1

SM-16006-rev.1 ix

- Table of Contents -

1. Installation ..............................................................................................................................1-1

1.1 Outdoor Unit ....................................................................................................................................1-2

1.2 Change-Over Box............................................................................................................................1-2

1.3 Indoor Unit ......................................................................................................................................1-3

1.3.1 DOAS Type ............................................................................................................................1-3

1.4 Control Device ................................................................................................................................1-41

1.4.1 Wired Controller .....................................................................................................................1-41

1.4.2 Simplified Wired Controller .....................................................................................................1-41

1.4.3 Wireless Controller .................................................................................................................1-41

1.4.4 Mini Central Controller ...........................................................................................................1-41

1.4.5 Large Central Controller .........................................................................................................1-41

1.4.6 Computerized Central Controller Management Software ......................................................1-41

1.4.7 Computerized Central Controller Software / Operation Ratio ................................................1-41

1.4.8 Computerized Central Controller Adapter ..............................................................................1-41

2. Operation ...............................................................................................................................2-1

2.1 Indoor Unit ......................................................................................................................................2-2

2.1.1 DOAS Type ............................................................................................................................2-2

2.2 Control Device ................................................................................................................................2-23

2.2.1 Wired Controller .....................................................................................................................2-23

2.2.2 Simplified Wired Controller .....................................................................................................2-23

2.2.3 Mini Central Controller ...........................................................................................................2-23

2.2.4 Large Central Controller .........................................................................................................2-23

2.2.5 Computerized Central Controller Management Software ......................................................2-23

2.2.6 Computerized Central Controller Software / Operation Ratio ................................................2-23

x SM-16006-rev.1


3. Troubleshooting .....................................................................................................................3-1

3.1 Initial Troubleshooting .....................................................................................................................3-2

3.1.1 Checking Electrical Wiring and Power Source .......................................................................3-2

3.1.2 Location of Printed Circuit Boards (PCBs) .............................................................................3-6

3.1.3 Checking Rotary Switch and DIP Switch Settings .................................................................3-7

3.1.4 Checking Wired Controller .....................................................................................................3-9

3.1.5 Checking Using 7-Segment Display.......................................................................................3-15

3.1.6 Checking Alarm Code History ................................................................................................3-15

3.1.7 Emergency Operation ............................................................................................................3-15

3.2 Troubleshooting Procedures ...........................................................................................................3-16

3.2.1 Alarm Code Table ...................................................................................................................3-16

3.2.2 Troubleshooting Using Alarm Codes ......................................................................................3-17

3.2.3 Abnormalities of Devices ........................................................................................................3-33

3.3 Procedures for Checking .................................................................................................................3-43

3.3.1 Self-Checking of PCBs using Wired Controller ......................................................................3-43

3.3.2 Self-Checking of Wired Controller ..........................................................................................3-43

3.4 Test Run ..........................................................................................................................................3-44

3.4.1 Test Run Using Wired Controller ............................................................................................3-45

3.4.2 Test Run from Outdoor Unit Side ..........................................................................................3-47

3.4.3 Checking the Test Run ...........................................................................................................3-47

4. Maintenance ..........................................................................................................................4-1

4.1 Maintenance of Outdoor Unit ..........................................................................................................4-2

4.2 Maintenance of Indoor Unit .............................................................................................................4-3

4.2.1 DOAS Type ((H,Y)DOA096B21S) ..........................................................................................4-3

4.2.1.1 Removing Long Life Filter .................................................................................................4-3

4.2.1.2 Removing PCB .................................................................................................................4-3

4.2.1.3 Removing Fan and Fan Motor ..........................................................................................4-5

4.2.1.4 Removing Thermistors for Liquid Pipe and Gas Pipe .......................................................4-7

4.2.1.5 Removing Float Switch .....................................................................................................4-8

4.2.1.6 Removing Drain Pump ......................................................................................................4-9

4.2.1.7 Removing Drain Pan .........................................................................................................4-10

4.3 Main Parts .......................................................................................................................................4-11

4.3.1 for Outdoor Unit ......................................................................................................................4-11

4.3.2 for Change-Over Box .............................................................................................................4-11

4.3.3 for Indoor Units .......................................................................................................................4-12

4.3.3.1 Printed Circuit Board .........................................................................................................4-12

4.3.3.2 Fan Motor ..........................................................................................................................4-13

4.3.3.3 Thermistor .........................................................................................................................4-14

4.3.3.4 Electronic Expansion Valve ...............................................................................................4-16

SM-16006-rev.1 xi

5. External Input/Output and Function Setting ...........................................................................5-1

5.1 DIP Switch Settings of Outdoor Unit ...............................................................................................5-2

5.2 High Static Pressure Setting (DSW5-No.5: ON) .............................................................................5-2

5.3 External Input/Output and Function Setting Mode for Outdoor Unit ................................................5-2

5.4 External Input/Output and Function Setting Mode for Indoor Unit ..................................................5-3

5.4.1 External Input and Output Settings ........................................................................................5-5

5.4.1.1 Remote Control ON/OFF Function ...................................................................................5-6

5.4.1.2 Power Supply ON/OFF 1 (Automatic Operation When Power Supply Is ON) ..................5-11

5.4.1.3 Power Supply ON/OFF 2 (Restarting Function After Power Failure) ................................5-11

5.4.1.4 Control by Field-Supplied Room Thermostat [ Input Setting: Code (01) (for Cooling), Code (02) (for Heating) ] ....................................5-12

5.4.1.5 Remote Cooling/Heating Change [ Input Setting: Code (07) ] ..........................................5-13

5.4.1.6 Picking Up Operation Signal .............................................................................................5-14

5.4.2 Function Setting .....................................................................................................................5-17

5.4.2.1 Function Selection Item ....................................................................................................5-17

5.4.2.2 Description of Function Selection Item .............................................................................5-22

5.5 Power Saving Functions from Wired Controller ..............................................................................5-37

5.5.1 Power Saving Guide ..............................................................................................................5-37

5.5.2 Outdoor Unit Capacity Control ...............................................................................................5-37

5.5.3 Rotation Control Function ......................................................................................................5-38

5.5.4 Intermittent Control Function ..................................................................................................5-38

5.5.5 Power Saving Schedule Function ..........................................................................................5-39

5.5.6 Operation Noise Reduction Schedule Function .....................................................................5-39

5.5.7 Power Consumption Display Function ...................................................................................5-39

6. Field Work Instructions ..........................................................................................................6-1

6.1 Special Attention Regarding Refrigerant Gas Leakage ...................................................................6-2

6.2 Modifications of Charging Refrigerants Other than Those Specified by Johnson Controls .............6-3

6.3 Pre-start Inspection Work ................................................................................................................6-4

6.4 Service and Maintenance Record by 7-Segment Display ...............................................................6-5

6.5 Service and Maintenance Record by Wired Controller ...................................................................6-6

6.6 Service and Maintenance Record ...................................................................................................6-8

6.7 Saturation Curve for Refrigerant .....................................................................................................6-9

6.8 Mollier Chart for R410A ...................................................................................................................6-10

7. Service Parts List ...................................................................................................................7-1

7.1 Outdoor Unit ....................................................................................................................................7-2

7.2 Change-Over Box ............................................................................................................................7-2

7.3 Indoor Unit ......................................................................................................................................7-3


SM-16006-rev.1 1-1

INSTALLATION

1. Installation

1-2 SM-16006-rev.1

INSTALLATION

1.1 Outdoor Unit

Refer to the Service Manual No. SM-15001.

1.2 Change-Over Box


SM-16006-rev.1 1-3

INSTALLATION

- Table of Contents -1. Introduction ....................................................................................................................................................1-4

2. Safety Instructions ..........................................................................................................................................1-4

3. Before Installation ..........................................................................................................................................1-103.1 Control Mode .......................................................................................................................................1-103.2 Combination of Outdoor Unit and Indoor Unit .......................................................................................1-103.3 Transportation and Handling .................................................................................................................1-103.4 Factory-Supplied Accessories ...............................................................................................................1-113.5 Necessary Tools and Instrument List for Installation .............................................................................1-11

4. Installation Location .......................................................................................................................................1-12

5. Installation Work ............................................................................................................................................1-125.1 Suspension Bolts ...................................................................................................................................1-125.2 Marking of Positions of Suspension Bolts and Piping Connections ......................................................1-135.3 Mounting Indoor Unit .............................................................................................................................1-135.4 Adjusting of Unit Level ...........................................................................................................................1-155.5 Connecting Supply Duct ........................................................................................................................1-155.6 Installation of Remote Sensor ...............................................................................................................1-165.7 Installation of Wired Controller (Optional Parts) ....................................................................................1-175.8 Setting of Wired Controller and Remote Sensor ...................................................................................1-17

6. Refrigerant Piping Work .................................................................................................................................1-186.1 Piping Materials .....................................................................................................................................1-186.2 Piping Connection .................................................................................................................................1-19

7. Drain Piping ...................................................................................................................................................1-21

8. Electrical Wiring .............................................................................................................................................1-238.1 General Check ......................................................................................................................................1-238.2 Electrical Wiring Capacity ......................................................................................................................1-24

8.2.1 Field Minimum Wire Sizes for Power Supply ...............................................................................1-248.2.2 Details of Electrical Wiring Connection ........................................................................................1-24

8.3 Position of Electrical Wiring Connection ................................................................................................1-268.4 Wiring Connection .................................................................................................................................1-308.5 DIP Switches Setting .............................................................................................................................1-328.6 Function Selection by Wired Controller .................................................................................................1-338.7 Setting of Control Mode .........................................................................................................................1-34

8.7.1 Setting of Indoor Unit by Optional Wired Controller .....................................................................1-348.7.2 Function Selection and Input/Output Setting ...............................................................................1-358.7.3 Setting by DSW8 (Control Mode) on PCB ...................................................................................1-368.7.4 Setting of Indoor Unit ...................................................................................................................1-368.7.5 Setting of Outdoor Unit ...............................................................................................................1-37

8.8 Setting of Connected Outdoor Unit Type ...............................................................................................1-37

9. Test Run .........................................................................................................................................................1-389.1 Before Test Run .....................................................................................................................................1-389.2 Test Run ................................................................................................................................................1-389.3 Alarm Code ...........................................................................................................................................1-40

1.3 Indoor Unit1.3.1 DOAS Type

1-4 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 1

For details on wiring between the indoor unit and the outdoor unit, refer to the "Installation and Maintenance Manual" for the outdoor unit.

For details on the optional controller, refer to the "Installation and Maintenance Manual" for that optional controller module.

For details on each optional part, refer to the "Installation and Maintenance Manual" for each optional part. For central station, refer to the "Installation and Maintenance Manual" for the central station.

1. Introduction

2. Safety Instructions

Signal Words




General Precautions

To reduce the risk of serious injury or death, read these instructions thoroughly and follow all warnings or cautions included in all manuals that accompanied the product and are attached to the unit. Refer back to these safety instructions as needed.

This system should be installed by personnel certified by Johnson Controls, Inc. Personnel must be qualified according to local, state and national building and safety codes and regulations. Incorrect installation could cause leaks, electric shock, fire or explosion. In areas where Seismic ‘’Performance requirements are specified, the appropriate measures should be taken during installation to guard against possible damage or injury that might occur in an earthquake if the unit is not installed correctly, injuries may occur due to a falling unit.



Provide this information and the warranty must be provided to all installers and users. Ask end users to maintain copies for future reference.(Refrigerant Piping Work) (Electrical Wiring Work) (Ref. Charge Work) (Test Run) (User)

Read following sections carefully before installing this product.

Read over the "Installation and Maintenance Manual" for the outdoor unit as well.

SM-16006-rev.1 1-5

INSTALLATION

2 P00860Q-rev.2


Before servicing, turn-OFF the power supply and use accepted lockout and tag out procedures at all main switches.

This unit is the pressurized system. Never loosen threaded joints while the system is under pressure and never open pressurized system parts.

Johnson Controls will not assume any liability for injuries or damage caused by not following steps outlined or described in this manual. Unauthorized modifications to Johnson Controls products are prohibited as they… May create hazards which could result in death, serious injury or equipment damage; Will void product warranties; May invalidate product regulatory certifications; May violate OSHA standards;

Take the following precautions to reduce the risk of property damage.

Be careful that moisture, dust, or variant refrigerant compounds not enter the refrigerant cycle during installation work. Foreign matter could damage internal components or cause blockages.

If air filters are required on this unit, do not operate the unit without the air filter set in place. If the air filter is not installed, dust may accumulate and breakdown may result.

Do not install this unit in any place where silicon gases can coalesce. If the silicon gas molecules attach themselves to the surface of the heat exchanger, the finned surfaces will repel water. As a result, any amount of drainage moisture condensate can overflow from the drain pan and could run inside of the electrical box, possibly causing electrical failures.

When installing the unit in a hospital or other facility where electromagnetic waves are generated from nearby medical and/or electronic devices, be prepared for noise and electronic interference Electromagnetic Interference (EMI). Do not install where the waves can directly radiate into the electrical box, controller cable, or controller. Inverters, appliances, high-frequency medical equipment, and radio communications equipment may cause the unit to malfunction. The operation of the unit may also adversely affect these same devices. Install the unit at least 10 ft. (3m) away from such devices.

When a wireless controller is used, locate at a distance of at least 3.3 ft. (1m) between the indoor unit and electric lighting. If not, the receiver part of the unit may have difficulty receiving operation commands.

Do not install the unit in any location where animals and plants can come into direct contact with the outlet air stream. Exposure could adversely affect the animals and plants.

Do not install the unit with any downward slope to the side of the drain adaptor. If you do, you may have drain water flowing back which may cause leaks.

Be sure the drain hose discharges water properly. If connected incorrectly, it may cause leaks. Do not install the unit in any place where oil can seep onto the units, such as table or seating areas in

restaurants, and so forth. For these locations or social venues, use specialized units with oil-resistant features built into them. In addition, use a specialized ceiling fan designed for restaurant use. These specialized oil-resistant units can be ordered for such applications. However, in places where large quantities of oil can splash onto the unit, such as a factory, even the specialized units cannot be used. These products should not be installed in such locations.

Installation Precautions

To reduce the risk of serious injury or death, the following installation precautions must be followed.

When installing the unit into… A wall: Make sure the wall is strong enough to hold the unit’s weight. It may be necessary to

construct a strong wood or metal frame to provide added support. A room: Properly insulate any refrigerant tubing run inside a room to prevent “sweating” that can

cause dripping and water damage to wall and floors.

1-6 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 3

Damp or uneven areas: Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the unit to prevent water damage and abnormal vibration.

An area with high winds: Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle.

A snowy area: Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents.

Do not install the unit in the following places. Doing so can result in an explosion, fire, deformation, corrosion, or product failure. Explosive or flammable atmosphere Where a fire, oil, steam or powder can directly enter the unit, such as nearby or above a kitchen

stove. Where oil (including machinery oil) may be present. Where corrosive gases such as chlorine, bromine, or sulfide can accumulate, such as near a hot

tub or a hot spring. Where dense, salt-laden airflow is heavy, such as in coastal regions. Where the air quality is of high acidity. Where harmful gases can be generated from decomposition.

Do not position the drain pipe for the indoor unit near any sanitary sewers where corrosive gases may be present. If you do, toxic gases can seep into breathable air spaces and can cause respiratory injuries. If the drain pipe is installed incorrectly, water leakage and damage to the ceiling, floor, furniture, or other possessions may result. If the drain pipe becomes clogged, water may drip from the indoor unit. Do not install the indoor unit where such dripping can cause moisture damage or uneven locations: Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the unit to prevent water damage and abnormal vibration.

Before performing any brazing work, be sure that there are no flammable materials or open flames nearby.

Perform a test run to ensure normal operation. Safety guards, shields, barriers, covers, and protective devices must be in place while the compressor/unit is operating. During the test run, keep fingers and clothing away from any moving parts.

Clean up the site when finished, remembering to check that no metal scraps or bits of wiring have been left inside the unit being installed.

After installation work for the system has been completed, explain the “Safety Precautions,” the proper use and maintenance of this unit to the customer according to the information in all manuals that came with the system. All manuals and warranty information must be given to the user or left near the Indoor Unit.

SM-16006-rev.1 1-7

INSTALLATION

4 P00860Q-rev.2





Before installation is complete, make sure that the refrigerant leak test has been performed. If refrigerant gases escape into the air, turn OFF the main switch, extinguish any open flames and contact your service contractor. Refrigerant (Fluorocarbon) for this unit is odorless. If the refrigerant should leak and come into contact with open flames, toxic gas could be generated. Also, because the fluorocarbons are heavier than air, they settle to the floor, which could cause asphyxiation.



A compressor/unit comprises a pressurized system. Never loosen threaded joints while the system is under pressure and never open pressurized system parts.






Only use electrical protection equipment and tools suited for this installation. Use specified cables between units. Communication cable shall be a minimum of AWG18 (0.82mm2), 2-Conductor, Stranded Copper.

Shielded cable must be considered for applications and routing in areas of high EMI and other sources of potentially excessive electrical noise to reduce the potential for communication errors. When shielded cable is applied, proper bonding and termination of the cable shield is required as per Johnson Controls guidelines. Plenum and riser ratings for communication cables must be considered per application and local code requirements.

Use an exclusive power supply for the air conditioner at the unit’s rated voltage. Be sure to install circuit breakers (ground fault interrupter, isolating switch, molded case circuit

breaker and so on), with the specified capacity. Ensure that the wiring terminals are tightened securely to recommended torque specifications. If a circuit breaker or fuse is frequently activated, shut down the system and contact your service contractor.

1-8 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 5

Clamp electrical wires securely with a cable clamp after all wiring is connected to the terminal block. In addition, run wires securely through the wiring access channel.

When installing the power lines, do not apply tension to the cables. Secure the suspended cables at regular intervals, but not too tightly.

Make sure that the terminals do not come into contact with the surface of the electrical box. If the terminals are too close to the surface, it may lead to failures at the terminal connection.

Turn OFF and disconnect the unit from the power supply when handling the service connector. Do not open the service cover or access panel to the indoor or outdoor units without turning OFF the main power supply.

After stopping operation, be sure to wait at least five minutes before turning off the main power switch. Otherwise, water leakage or electrical breakdown may result. Disconnect the power supply completely before attempting any maintenance for electrical parts. Check to ensure that no residual voltage is present after disconnecting the power supply.

Do not clean with, or pour water into, the controller as it could cause electric shock and/or damage the unit. Do not use strong detergent such as a solvent. Clean with a soft cloth.

Check that the ground wiring is securely connected. Do not connect ground wiring to gas piping, water piping, lighting conductor, or telephone ground wiring.

If a circuit breaker or fuse is frequently activated, shut down the system and contact your service contractor.

SM-16006-rev.1 1-9

INSTALLATION

6 P00860Q-rev.2

Proper handling of this unit requires two-people. Safe handling and installing the indoor unit requires the strength of two people. Mounting the unit alone may cause injury due to fall of the unit. Although the unit may be girded with steel banding, do not use it for transportation. Avoid contact with finned surfaces of the heat exchanger as sharp edges can cause severe injury to hands and fingers. Use appropriate work gloves for the job.

NOTICE Check to ensure that the drain hose discharges moisture properly. If connected incorrectly, it can result

in leakage and damage to furniture. Make sure to use the factory-supplied drain hose and hose clamp. Other makes can cause moisture leakage.

Do not bend or twist the factory-supplied drain hose. This could compromise the seal and result in moisture leakage.

Do not apply an excessive force to the drain pipe connection. This can also compromise the seal properties of the connection.

Verify that the installed unit is level with floor and ceiling surfaces. Any variance or inclination can cause moisture to back up into the drain pan, overflow, and seepage onto ceiling or wall surfaces, and cause damage to carpeted surfaces or furniture below.

Do not install this system in close proximity to septic sewer lines where flammable and toxic gases can coalesce. Inspect the drain pan before the onset of winter to drain away all accumulated moisture in the pan.

The heat exchanger of indoor unit overheats whenever there is a slight amount of refrigerant circulating during slowdown or stoppage. As a result, moisture in the drain pan evaporates where it can condense on ceiling or wall surfaces.

After the drain check is completed, insert the rubber plug again and seal the gap with a silicon sealant.

Electrical Installation

In some cases, the packaged air conditioner may not be operated normally under the following cases: When electrical power for the packaged air conditioner is supplied from the same power transformer

as the device*. When the power supply wiring for the device* and the packaged air conditioner are located close to

each other: Device*: (Example): Lift, container crane, rectifier for electric railway, inverter power device, arc

furnace, electric furnace, large-sized induction motor, and large-sized switch. It consumes large quantities of electrical power.

Regarding that mentioned above, surge voltage may be inducted into the power supply wiring for the crated air conditioner due to a spike in power consumption for this device and an activation of the switch. Check the field regulations and standards before performing any electrical work in order to safeguard the power supply for the crated air conditioner unit.

1-10 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 7

3.2 Combination of Outdoor Unit and Indoor UnitIndoor units can be connected with the outdoor unit (VRF system).

Combination of Outdoor Unit and Indoor Unit

DOAS only Total capacity of DOAS is 100%~145% of the outdoor unit .*2)

DOAS+

Other StandardIndoor Unit

Capacity of DOAS shall be calculated by increased 1.5 times.AND

Total capacity of indoor unit (including DOAS) shall bewithin capacity range of connected outdoor unit.

*1) DOAS can not be connected with Heat Recovery system.*2) When connected outdoor unit is Less Module type [Model: (H,Y)VAHP_B(3,4)1LM], total capacity of

DOAS shall be within 100%~120% of the outdoor unit.*3) When connecting multiple DOAS and/or other standard indoor unit to the outdoor unit, be sure to

operate all indoor units simultaneously. In addition, it is recommended that only connect one DOAS to the outdoor unit.

3. Before Installation

3.3 Transportation and Handling(1) Transport the product as close to the installation location as possible before unpacking.(2) Do not lay any objects on the indoor unit.(3) The indoor unit comes crated upside-down with the foam polystyrene drain pan positioned on top.

Do not invert the unit until it is ready to be suspended above the floor. Inverting the unit while on the floor will crush the drain pan. Do not handle the unit by grabbing at the polystyrene pan and other air outlets as they are fragile and will sustain damage.

(4) The indoor unit handle is fabricated from foam polystyrene and is susceptible to breakage if any excessive force is applied as a result of mishandling of the unit during installation.

3.1 Control Mode (1) This unit has two types of control mode which can keep either the Indoor temperature or the discharge

temperature to be more or less the temperature setpoint determined by wired controller. Choose a suitable control mode according to the installation location and purposes. Refer to Section 8.7 “Setting of Control Mode” for details about setting. Perform installation work and the setting of the units according to the table below.

Control Mode Indoor Temperature Control (factory-setting) Outlet Air Temperature Control

Details

This function controls operation to keep the indoor temperature almost at the set temperature on the wired controller.

This function controls operation to keep the discharge temperature almost at the set temperature on the wired controller.

Available Combination with Other Indoor Unit Standard indoor unit Only DOAS set the function of outlet

air temperature control

Detection of Temperature A remote sensor or a thermistor built in wired controller is necessary. Nothing is necessary.

Setting of Indoor Unit

Control Mode (Refer to Section 8.7.1 to 8.7.4)

Turn OFF No.3 pin (DSW8). ANDSet the function selection to "Cd:00" by optional wired controller. (Both of them are factory-setting.)

Turn ON No.3 pin (DSW8).ORSet the function selection to "Cd:01" by optional wired controller.

Connected Outdoor Unit Type(Refer to Section 8.8)

According to the outdoor unit type.

Setting of Outdoor Unit (Refer to Section 8.7.5) No setting. Set the function setting to "FT:02" by

outdoor PCB.

SM-16006-rev.1 1-11

INSTALLATION

8 P00860Q-rev.2

3.5 Necessary Tools and Instrument List for Installation

3.4 Factory-Supplied AccessoriesCheck to ensure that the following accessories are packed with the indoor unit. The screws, washers and flare nuts are packed in the pipe insulation.

NOTE:Use tools and measuring instruments (vacuum pump, gas hose, charging cylinder, manifold gauge) exclusively for refrigerant R410A.

No. Tool No. Tool

1 Handsaw 11 Torque Wrench

2 Phillips Screwdriver 12 Charging Cylinder

3 Vacuum Pump 13 Manifold Gauge

4 Refrigerant Gas Hose 14 Wire Cutter

5 Megohmmeter 15 Gas Leak Detector

6 Copper Pipe Bender 16 Level

7 Manual Water Pump 17 Crimper for Solderless Terminals

8 Pipe Cutter 18 Hoist (for Indoor Unit)

9 Brazing Kit 19 Ammeter

10 Hexagon Wrench 20 Voltage Meter

NOTICEThe controller and branch piping are optional accessories which are not included with the indoor unit. If necessary, please contact your contractor.

Accessory Purpose

Washer (M10)

Hose Clamp

Qty.

8

1

For Unit Suspension

For Drain Pipe Connection

Drain Hose1 For Drain Pipe Connection

Vibration-proofRubber 8 For Unit Suspension

Remote Sensor (*)1 For Detecting Indoor Temperature

Screw (M4) (*)

(*): Only for “Indoor Temperature Control” mode.

1 For Fixing Remote Sensor

Cord Clamp5

PVC Tube2

For Fixing PVC Tube

Cord Clamp8 For Refrigerant Piping Thermal Insulation

For Separating Transmission Wirings andWired Controller Wirings from Power Supply Wirings ID 1/2 inch (12mm)

Pipe Insulation1 For Refrigerant Liquid Piping Connection

ID 1 inch (26mm)

1 For Refrigerant Gas Piping Connection ID 1-1/8 inches (28mm)

1-12 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 9

4. Installation Location

Figure 4.1 Operation and Installation Space

(1) Install the indoor unit, allowing for proper clearance for operation and maintenance access, as shown in Figure 4.1.

Min. 31-1/2[800]

5-7/8 to 7-7/8[150 to 200]

Electrical Control Box

Min

. 39-

3/8

[100

0]M

in. 3

9-3/

8[1

000]

Min. 23-5/8[600]

Service Access Door(Min. 23-5/8 [600]

If the ceiling board can not be detectedfor servicing, prepare a service access door belowthe indoor unit for removing the indoor unit.

(2) Consider the air distribution from the indoor unit to the space of the room, and select a suitable location so that uniform air temperature in the room can be obtained.

(3) Do not leave combustible materials inside the service space of the indoor unit.(4) Avoid obstacles which may hamper the intake airflow or the discharge airflow.(5) Do not install the indoor unit in a machine shop or kitchen where vapor from oil or its mist flows to the

indoor unit. The oil will deposit on the heat exchanger, thereby reducing the indoor unit performance, and may deform and in the worst case, break the plastic parts of the indoor unit.

(6) Pay attention to the following points when the indoor unit is installed in a hospital or other facilities where there are electronic waves from medical equipment.(a) Do not install the indoor unit where the electromagnetic wave is directly radiated to the electrical

box, communication cable or wired controller.(b) Install the indoor unit and components as far away as practical or at least 9.8ft (3m) from any

electromagnetic wave radiator.(c) Prepare a steel box and install the wired controller in it. Prepare a steel conduit tube and wire the

controller cable in it. Then, connect the ground wiring with the box and the tube.(d) Install a noise filter when the power supply emits harmful noises.

(7) To avoid any corrosive action to the heat exchangers, do not install the indoor unit in an acid or alkaline environment.

5. Installation Work

5.1 Suspension Bolts(1) Determine the final location and installation

orientation of the indoor unit with respect to the space allowed for piping, wiring, and maintenance access.

(2) Mount suspension bolts, as shown in Figure 5.1.

5-7/8 to 6-5/16 Insert(221 to 331 lbs)

I Beam

(inch)

Suspension Bolt(W3/8 or M10)

Anchor Bolt(W3/8 or M10)

SteelConcrete

For Wooden Beam Suspension

Wooden Bar(2-3/8 to 3-9/16 Square)

Wooden Beam

Nut

Nut

Square Washer

Square Washer

Suspension Bolt

For Concrete Slab For Steel Beam

Figure 5.1 Mounting of Suspension Bolts

Unit: inch [mm]

SM-16006-rev.1 1-13

INSTALLATION

10 P00860Q-rev.2

5.3 Mounting Indoor UnitHang the indoor unit as shown in Figure 5.3.

Field-Supplied Parts * Suspension Bolts: 4-M10 or W3/8 * Nut: 8-M10 or W3/8

5.2 Marking of Positions of Suspension Bolts and Piping Connections(1) Mark the positions of the suspension bolts, refrigerant piping connections and drain connection.(2) Installation dimensions are shown in Figure 5.2.

Suspension Bracket

Suspension Bolts (4-M10 or W3/8)(Field-Supplied)

False Ceiling Side

Max

. 29-

1/2

[750

]

Vibration-proofRubber(Accessory)

Nut & Washer(8-M10 or W3/8)

Unit

Figure 5.3 Mounting Indoor Unit

Figure 5.2 Suspension Bolts

Unit: inch [mm]

1-15/16 [50]5-7/16[138]

1-9/16 [40]50 [1270]52-3/8 [1330] (for Suspension Bolt)

39-3/8 [1000]56-φ1/8 [3]Around the Flange

2-9/16 x 1-3/8 [65 x 35](for Suspension Bolt)

Refrigerant Gas Pipe Connection

Refrigerant Liquid Pipe Connection

Drain Pipe Connection

9-15

/16

[252

]

13-5

/8 [3

46]

18-7

/16

[469

]

1/2

[13]

15/1

6 [2

4]40

-3/1

6 [1

021]

(for

Sus

pens

ion

Bol

t)1

[25]

5/8

[16]

1-1/

8 [2

8]42

-1/1

6 [1

069]

7/8

[23]1-15/16 [50]

4-7/16[113]

41-5/16 [1050]

60-φ1/8 [3]Around the Flange

1-14 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 11

Figure 5.5 Suspended Indoor Unit

(2) Suspension Indoor Unit* Hook the suspension bracket to the nut, washer and vibration-proof rubber of each suspension bolt,

as shown, starting at the opposite side and working over to the service cover side.* After verifying that the nut, washer and vibration-proof rubber are correctly affixed to the retainers on

the suspension bracket, hook the suspension bracket of the service cover side to the nut, washer and vibration-proof rubber.

(Install the suspension bolts away from the unit when fastening.)

Figure 5.4 Suspension Bolts and Nuts

(1) Prepare the suspension bolts, washers, nuts and vibration-proof rubbers, as shown in Figure 5.4.

App

rox.

1-15

/16

inch

es(5

0mm

)

Washer

Vibration-proofRubber


Nut

Washer

Indoor Unit

Retaining Nut

Suspension Bolt

Suspension Bracket

SuspensionBracket

Nut andWasher


Right Side(Service Cover Side)

Indoor Unit

Left Side

(3) Install the indoor unit with sufficient space between the unit and the ceiling or wall as shown below. Do not use any duct made of flammable materials.

B

Air Outlet

Air Intlet

A

Indoor Unit

inch (mm)Material of Wall, Frame

Flammable NonflammableA Min. 39-3/8 (1,000) Min. 3-15/16 (100)B Min. 23-5/8 (600) Min. 1-15/16 (50)

SM-16006-rev.1 1-15

INSTALLATION

12 P00860Q-rev.2

5.5 Connecting Supply Duct

5.4 Adjusting of Unit Level(1) Use a level to verify that the unit is perfectly horizontal. There should be no degree of slope present.

3/16

inch

(5m

m)

Figure 5.6 Adjusting of Unit Level

(2) The unit should be installed so that the rear side of the unit is slightly (0 to 3/16 inch (0 to 5mm)) lower than the front side, to allow for proper drainage.

(3) Tighten the bolts of the nuts with the suspension brackets after adjustment is completed. Adhesive must be applied to the bolts in order to prevent them from loosening.

NOTE: During position the installation process, keep the unit well covered with vinyl cover and related components covered until it is time to hoist into position.

(1) Because the air filter is not included as accessories of the unit, install optional air filter which has higher than 50% of dust collecting efficiency.

(2) If reducing the noise occurred by indoor unit is necessary, install silencers (field-supplied).(3) The canvas ducts shall be connected between the indoor unit and the supply duct as a figure shown

below in order to avoid abnormal sound vibration.(4) Attach the vibration-proof rubber to suspension bolts in order to avoid abnormal sound vibration.(5) Design the duct arrangement as “Unit External Static Pressure = Duct Pressure Loss + Suction/

Discharge Pressure Loss”. If the duct design is not appropriate, a bigger noise, splashed the water etc. will occur. The damper or the duct fan etc. shall be used to adjust the fresh air volume to let the unit external static pressure be more or less within pressure loss of duct.

(6) If pressure loss of duct is excessive, change the installation location of the unit or the shape of ducts in order to let the design arrangement be within the unit external static pressure.

(7) Make sure that a service access panel is mounted on the ceiling for the service of electrical parts and motor etc.. If the service access panel can not be mounted on the ceiling, an alternative opening shall be prepared on the ceiling as shown figure above. It shall be a suitable size for the indoor unit to be installed and removed easily and for a fan, a heat exchanger and a drain pan to be installed through it.

(8) Install thermal insulations over the duct to prevent it from condensation.(9) Do not install the duct in following places. - Places where is subject to directly radiant heat from the sunlight or heat sources.

- Places where corrosive gases, volatile gases and explosive gases are generated. - Places where air intake of such as a kitchen etc. is faced on.

In addition, install a protection hood and wrap the air inlet with seal materials (such as a net) to protect the duct from any insects or small animals.

(10) Conduct the periodic maintenance of air filter and periodic check of the clogging of drain piping carefully when the indoor unit is installed near busy traffic. Especially if installing in places where strong salty wind blows (coast region, etc), consult with your distributor for countermeasures about the a periodic maintenance and contract to replace a heat exchanger.

(11) If the outdoor temperature is low, “Defrosting Operation” is performed automatically and the air discharged from the air outlet will be colder. In general, moreover, the temperature of air flows will be decreased when heating operation is started up. Therefore, make sure to choose the location with care for air outlet and air flow direction.

1-16 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 13

Figure 5.7 Duct Connection Example

Outdoor Air(with Air Filter)

Damper forAdjusting Air Volume

SilencerSilencer Canvas DuctCanvas Duct

ThermalInsulation

Damper forAdjusting Air VolumeAir Outlet Level Ceiling

DOAS Unit

Service Access Panel(17-11/16 inches x 17-11/16 inches)

An alternative opening

(12) The DOAS unit is designed to process outdoor air intake and should not be used as a standard indoor unit. If the internal load is higher, additional indoor units need to be added.

(13) The DOAS unit is designed to intake outdoor air only. Indoor air is not recommended to be returned to the DOAS unit.

(14) Install the ducts with the its air inlet being a lower level than the indoor unit to protect the unit from rain.

Voltage Model Static Pressurein.W.G.(Pa)

208V(H,Y)DOA096B21S

1.06 (265)

230V 1.24 (310)

5.6 Installation of Remote Sensor

(1) Installing Remote Sensor on Wall

Fixing Screw

Sensor Box

1-1/4(32)

Unit: inch (mm)

2-M4

Dimension for Fixing Remote Sensor on Wall

1-1/

4(3

2)

- Cut out the wiring holes in the sensor box and lead the wires for the sensor through the holes.- Secure the sensor box on the wall with the two screws.- If the sensor box cannot be secured on the wall with the screws, use double-sided tapes.

(2) Concealing Wires inside Wall

- Make the holes for securing the sensor box on the metal plate (field-supplied) as shown in the figure on the right, and secure the sensor box to the plate with screws.

- Make sure that the hole for air intake on the sensor box remains unobstructed.

Sensor Box Cover

Switch Box(Field-Supplied)

Unit: inch [mm]

Fixing Screw

Sensor Box Fixing Frame(Field-Supplied)Metal Plate

(Field-Supplied)

1-1/4[32]

(2-3/4 [70])

(4-3

/4 [1

20])

1-1/

4[3

2]

5/8

[16]

2-M4

SM-16006-rev.1 1-17

INSTALLATION

14 P00860Q-rev.2

5.7 Installation of Wired Controller (Optional Parts)Refer to “Installation & Maintenance Manual” of optional wired controller.

5.8 Setting of Wired Controller and Remote SensorWhen the function of Indoor Temperature Control is set, a remote thermistor built in optional wired controller or remote sensor is necessary. Determine the installation location of the wired controller and remote sensor according to below.

Do not install the wired controller and remote sensor in following places.- Places where the average temperature of indoor rooms can not be detected.- Places where are directly subject to the sunlight.- Places where is near heat sources.- Places where are subject to air directly flows from air outlet.- Places where are subject to the outdoor air by opening door etc.

Determine how to detect indoor temperature as follows, paying attention the installation location.

(1) Remote Sensor Connect remote sensor to this unit. The setting is not necessary.

(2) Remote Thermistor Built in Optional Wired Controller Connect optional wired controller to this unit. Select “Function Selection” menu by optional wired controller and follow as shown below.

Item Code Optional Function Setting ConditionC8 Thermistor of Wired Controller 01

(3) Combination of Remote Sensor and Remote Thermistor Built in Optional Wired Controller Connect remote sensor and optional wired controller to this unit. Select “Function Selection” menu by optional wired controller and follow as shown below.

Item Code Optional Function Setting ConditionC8 Thermistor of Wired Controller 02

NOTES:1. When the function of Indoor temperature control is set and the operation without optional wired

controller or remote sensor is tried, alarm “16” and “17” will be indicated and operation will be not available. (Even if the function of Outlet Air Temperature Control is set without them, alarms are not indicated)

2. Refer to “Installation and Maintenance Manual” of the optional wired controller for details.

It works by calculating the average of the two different temperatures between the remote thermistor built in optional wired controller and remote sensor.

1-18 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 15

6. Refrigerant Piping Work

Table 6.1 Piping Sizeinch (mm)

Model Gas Piping Liquid Piping(H,Y)DOA096B21S f7/8 (22.2) f3/8 (9.52)

(3) Prepare field-supplied copper pipes.(4) Select clean copper pipes. Make sure there is no dust and moisture inside.(5) The refrigerant oil for the refrigerant R410A is susceptible to moisture, an oxide film, and fatty oil. Take

special care during the installation so that moisture, contaminations or old refrigerant oil will not enter the refrigerant cycle. Otherwise, impurities may adhere to the expansion valve and it may prevent proper operation.

(6) When cutting the pipes, use a pipe cutter to avoid grind swarf generation for the pipe cutting work. Blow the inside of pipes with nitrogen or dry air to remove any dust or foreign materials before connecting pipes. Do not use any tools which produce a lot of swarf such as a saw or a grinder.

6.1 Piping Materials(1) The tolerance of refrigerant piping length differs depending on the combination with the outdoor unit.

Refer to “Installation and Maintenance Manual” of the outdoor unit for details.(2) Select the piping size from the following table.

For details on refrigerant piping work, vacuum pump, and refrigerant charge, refer to the "Installation and Maintenance Manual" for the outdoor unit.

Use the specified non-flammable refrigerant (R410A) to the outdoor unit in the refrigerant cycle. Do not charge the unit with materials other than R410A, such as hydrocarbon refrigerants (propane and isobutan), oxygen, flammable gases (acetylene, ammonia, etc.) or poisonous gases when installing, maintaining and moving the unit. These flammables are extremely dangerous and may cause explosion, a fire, or injury.

In Case of Getting the Pipe Through a Hole in the Wall

Correct CorrectIncorrect Incorrect

Correct Incorrect

HoleHole

Attach a cap or put a plastic bagover the pipe end.

Attach a cap or put a plastic bag over the pipe end.

Attach a cap or put a plastic bag over the pipe end.

Rubber Band

Do not lay the pipedirectly on the ground.

Rain watercan come in.

In Case of Rain

SM-16006-rev.1 1-19

INSTALLATION

16 P00860Q-rev.2

(1) Position of piping connection is shown below.Unit: inch [mm]

6.2 Piping Connection

2-7/8 [72](Drain Pipe Connection)

4-15/16 [126](Refrigerant Gas and Liquid Pipe Connection)

6-1/

2[1

65]

7-1/

16[1

79]

8-5/

16[2

11]

9-15/16 [252]

13-5/8 [346]

18-7/16 [469]

Refrigerant Gas Pipe ConnectionRefrigerant Liquid Pipe Connection

Drain Pipe Connection VP25(Outer Diameter φ1-1/4 [32])

CutRelease the gas before removingthe cap from the pipe.

Figure 6.1 Brazing Pipes

(2) Both the liquid refrigerant pipe and the gas refrigerant pipe have a thermistor for temperature detection. When brazing them to the indoor unit, cover and cool the pipes with a wet cloth so that the pipes will not be affected by the heat. Because the thermistor is attached near the side panel shown as the figure below, be careful not to affect the heat of brazing to the thermistor when brazing the gas refrigerant pipe. (If the gas refrigerant pipe is affected by the heat, it may cause malfunction.)

Liquid Pipe

Gas Pipe

Cool by a wet cloth.

Gas Thermistor

Take care to ensure thatthe flame does not comeinto contact with the mainbody itself.

After brazing the pipes, check for leakage and then insulate the pipes. Wrap the connection between the pipe on the unit and the field-installed pipe with tape.

Cut the pipe end before brazing to remove the cap, and discharge gas inside the pipe. If not discharged, brazing material will be blown off.

Pay attention so that the flame does not come into contact with the unit.

1-20 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 17

(3) After brazing, insulate the pipes after checking that there is no leakage. At that time, be sure to cover the space between two insulating piece by insulation pipe (factory-supplied

accessory).

PullThermal Insulation

Thermal Insulation

Thermal Insulation Pipe(Accessory)


as beforeNo Gap



Liquid Pipe

Gas Pipe

Field Installation Pipe

Indoor Unit

No Gap for Dew Protection

Long Band

: 13/16 inch (20mm)

Long Band

Thermal insulationpipe should be attachedso that the seam ison the top.

Figure 6.2 Insulating Pipes

(4) Evacuation and refrigerant charging procedures should be performed according to “Installation & Maintenance Manual” of the outdoor unit.

Make sure that the refrigerant leak test has been performed. Refrigerant (fluorocarbon) for this unit is non-flammable, non-toxic and odorless. However if the refrigerant should leak and contact with fire, toxic gas will be generated. Also because the fluorocarbon is heavier than air, it settles near the floor, which could cause suffocation.

SM-16006-rev.1 1-21

INSTALLATION

18 P00860Q-rev.2

(1) The position of the drain pipe connection is shown in Figure 7.1.(2) Prepare a polyvinyl chloride (PVC) pipe with 1-1/4 inches (32mm) outer diameter.(3) Fasten the tube to the drain hose with the adhesive agent and the field-supplied clamp. The drain

piping must be performed with a DOWN-SLOPE pitch of 1/100.(4) Insulate the drain pipe after connecting the drain hose.

7. Drain Piping

Perform drain piping work and attach the insulations before refrigerant piping work.

Ensure that the drain pipe discharges water properly. If connected incorrectly, it may cause leaks leading to property damage.

Do not provide an upward slope or a rising part for the drain pipe. Otherwise, the drain water will flow back into the unit and it may cause the water leakage when the unit operation is stopped.

Do not connect the drain pipe with a sanitary or sewage pipe or any other drainage pipe. When the common drain pipe is connected with other indoor units, the connected position of each indoor

unit must be higher than the common pipe. The pipe size of the common drain pipe must be large enough according to the unit size and number of units.

After performing drain piping work and electrical wiring, ensure to ensure that water flows smoothly as in the following procedures.

Do not put the drain pipe for the indoor unit into the drainage trench where corrosive gases occur. Otherwise, poisonous gases flow into the room, which may cause poisoning.

NOTICE

1 (2

5)1

(25)

(Dra

in-U

p Le

ngth

)

Drain Piping (PVC Tube, VP25)(Field-Supplied)

1/100 Down-Slope

Unit: inch (mm)

Suspension Bracket(Field-Supplied)

90o Elbow Pipe (VP25)(Field-Supplied)

Lift Piping for Drain-Up(PVC Tube, VP25)(Field-Supplied)

Indoor Unit

Drain Pump 8-9/16 (217)

14-1/4 (362) 1 (25)

7-7/

16(1

89)

11-1

/2 (2

92)

2-5/

16(5

8)

2-5/16(58)

1-15

/16

(50)

to10

-13/

16 (2

75) (

Max

.)

14-3

/4 (3

75) t

o 23

-5/8

(600

) (M

ax.)

DrainPan Rubber Boss

Drain Hose(L: 11-13/16 (300))(Accessory)

Figure 7.1 Drain Piping

Common

Drain PipingConnection

1/25 to 1/100 Down-Slope

Common Drain Piping

This drain pipe should beseparated from other pipes.

Incorrect: Upward Slope

Unit Rising PartIncorrect

Correct

Indoor Unit

Auxiliary Drain Pan(Field-Supplied)

To the Atmosphere

Figure 7.2 Auxiliary Drain Pan

NOTE:When the relative humidity of inlet or ambient air exceeds 80%, apply an auxiliary drain pan (field-supplied) beneath the indoor unit as shown in Figure 7.2.

1-22 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 19

After performing drain piping work and electrical wiring, verify that water flows smoothly as in the following procedure.

Checking with the Float Switcha. Turn ON the power supply.b. Pour 68 to 84oz (2 to 2.5 liters) of water into the drain pan.c. Ensure that the water flows smoothly and no water leakage occurs. When water cannot be found at

the end of the drain piping, check for leaks in main drain line if none are found repeat test until water is observed at end of main drain line.

NOTICE

SM-16006-rev.1 1-23

INSTALLATION

20 P00860Q-rev.2

8. Electrical Wiring

8.1 General Check(1) Make sure that the field-selected electrical components: (main power switches, circuit breakers, wires,

conduit connectors, and wire terminals) have been properly labeled in accordance with electrical data as specified in the Engineering Manual. Make sure that the components comply with the National Electrical Code (NEC).

(2) Check to ensure that the power supply voltage is within ±10% of the rated voltage.(3) Check the capacity of the electrical wires.

If the power supply capacity is too low, the system cannot be started due to a voltage drop.(4) Verify that the ground wiring is securely connected.

All electrical work must be done as outlined in this manual and in accordance with this manual. Substandard work can result in fire and damage to the unit.

Use specified cables between units and choose the cables correctly. If not, an electrical shock or fire may occur.

Do not open the service cover or access panel for the indoor or outdoor units without turning OFF the main power supply. It can result in an electrical shock.

Turn OFF the main power switch of the indoor unit and the outdoor unit before attempting any electrical wiring work or a periodical check is performed. If not, it will result in an electric shock or a fire.

Check to ensure that the indoor fan and the outdoor fan have stopped before attempting any electrical wiring work or for any scheduled electrical work that is being performed.

Tighten screws according to the following torque. M3.5: 0.9 ft·lbs (1.2 N·m) M5: 1.5 to 1.8 ft·lbs (2.0 to 2.4 N·m)

Secure all cables together with zip-ties and seal the connecting hole against the onslaught of moisture and insects.

Run the electrical wiring through the connecting hole in the side cover when using conduit. Secure the wired controller cable using the cable clamp inside the electrical box.

1-24 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 21

8.2 Electrical Wiring Capacity

8.2.1 Field Minimum Wire Sizes for Power Supply

• This equipment can be installed with a Ground Fault Circuit Interrupter (GFCI), which is a recognized measure for added protection to a properly grounded unit. Install appropriate sized breakers / fuses / overcurrent protection switches and wiring in accordance to local, state and NEC codes and requirements. The equipment installer is responsible for understanding and abiding by applicable codes and requirements. Failure to use a GFCI can result in electrical shock or fire.

• Do not operate the system until all the check points have been cleared. (A) Verify that electrical resistance is more than one megaohm by measuring the resistance between

ground and the terminals of the various electrical components. If less than one megaohm, do not activate the system until the electrical current drain is found and repaired.

(B) Check to ensure that the stop valves for the outdoor unit are fully opened, and then start the system. (C) Check to see that the main power has been switched ON for longer than 12 hours prior activating

the system. Power to the crankcase heater needs this time interval to warm the compressor oil up to operating temperature.

• Do not touch any of the parts by hand at the discharge gas side, since the compressor chamber and the pipes at the discharge side are heated higher than 194oF (90oC).

< Heat Pump System >

8.2.2 Details of Electrical Wiring ConnectionThe electrical wiring capacity of the outdoor unit should be referred according to the "Installation and Maintenance Manual" for the outdoor unit. Adjusting the DIP switches may be required depending on the arrangement with the outdoor unit.Select wiring capacity according to the table 8.1. Install a GFCI (Ground Fault Circuit Interrupter) and main switch as shown in each of the system diagrams below.

OutdoorUnit

IndoorUnit

Switchbox

Outdoor UnitPower Supply

Indoor UnitPower Supply

IndoorUnit

IndoorUnit

GFCI

MainSwitch

GFCI

MainSwitch

Refer to the “Installation and Maintenance Manual”for the connected outdoor unit for details of wire,GFCI and main switch for outdoor unit.

SM-16006-rev.1 1-25

INSTALLATION

22 P00860Q-rev.2

Table 8.1 Recommended Wiring Capacity and Size

Model PowerSupply

Minimum Wire Thickness [AWG (mm2)]

GFCI<Ground Fault

Circuit Interrupter>Main Switch MCA

<MinimumCircuit

Ampacity>Power Supply

Wiring Size<Main>

GroundWiringSize

CommunicationCable Size

Nominal Current

Nominal Sensitive Current

NominalCurrent Fuse

[A] [mA] [A] [A] [A]

(H,Y)DOA096B21S1~,

208/230V60Hz

18 (0.82) 18 (0.82) 18 (0.82) 15 30 15 15 4.3

Check for the recommended size GFCI shown in the table 8.1. Between indoor and outdoor units, use dual-conductor, AWG18 (0.82mm2) stranded copper cable

for communication cable. Do not use any cable with more than two conductors. Twisted pair or shielded cable can be used in environments with excessive electrical noise to reduce the possibility of communication errors between system components. Total cable length should not exceed 3281 ft (1000m).

Select the wiring size, GFCI (Ground Fault Circuit Interrupter) in accordance with the regulations for each region, the "Installation and Maintenance Manual", and the dedicated electrical circuit that must be used.

Outside of the indoor unit, installation of the power supply wiring, communication cable, and wired controller cable should be spaced as far apart as possible.

NOTICE

NOTES:1) Follow local codes and regulations when selecting field wires.2) Select a GFCI with an activation speed of 0.1 sec. or less.3) Total operating current is less than 12A.

1-26 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 23

8.3 Position of Electrical Wiring Connection

• The electrical wiring connection for the indoor unit is shown in Section 8.2.2.• The connection at the terminal block for the indoor unit is shown in the figure below. Check the outdoor

unit for the combination before the wiring work. The screws at the terminal block should be performed according to the tightening torque as shown in the table below.

Tightening Torque for TerminalsScrew Size Tightening Torque

TB1 M4 0.7 - 1.0(1.0 - 1.3

ft·lbsN·m)

TB2 M3.5 0.9 ft·lbs(1.2 N·m)

(A)(B)

(C)

Screw

NOTICE

Terminal Block for Power Source CableTB1

Terminal Block for Control CableTB2

L1 L2 1 2 A B

Do not connect the main power supply wiring to the communication line (Terminals A, B, 1 and 2 of TB2). If these are connected, the printed circuit board (PCB) will be destroyed.

Note the following for wire connections at TB1 and TB2:(A) Attach a piece of insulation tape or sleeve at each terminal.(B) Maintain a safe distance between the electrical box and the

terminals to prevent a short circuit.(C) Maintain a safe distance between the terminals.

SM-16006-rev.1 1-27

INSTALLATION

24 P00860Q-rev.2

(1) Connect the cable for the optional controller or the optional extension cable to the terminals inside the electrical box through the connecting hole of the cabinet.

(2) Connect the power supply and the ground wiring to the terminals in the electrical box.(3) Connect the cables between the indoor unit and the outdoor unit to the terminals inside the electrical box.(4) Connect cables to their corresponding terminal number and the similarly marked band.(5) Connect the communication cable between those indoor units connected to the same outdoor unit.(6) Do not connect the main power supply wiring to the communication line (Terminals A, B, 1 and 2 of

TB2). If connected, the printed circuit board (PCB) will be destroyed.(7) Tightly clamp the power supply wiring and communication cables using the cable clamp inside the

electrical box.

NOTE: When the standard wire is used for the field-wiring connection, the M4 crimping terminal should be used. When the single wire is used, fashion it into the shape as shown at right and connect it in order to tighten the washer uniformly. The screws at the terminal block should be tightened according to the torque specification as shown in the table above.

Stranded Wire Single Wire

Connect it withCrimping Terminal.

Connect it DirectAs Shown Below.

(8) All electrical work should be performed in strict accordance with electrical schematics in the "Installation and Maintenance Manual".

(9) If Power Supply Voltage (208V/230V) is introduced into the Communication Line: If 208V/230V are applied to the communication line at (Terminals 1 and 2 of TB2) by mistake, the fuse on the PCB for the communication line will blow. In this case, perform the recovery work as shown in the diagrams below. (a) Reconnect the wirings correctly. (b) Set the No.1 pin at DSW7 (on the PCB) to ON.

Upon PCB recovery after the fuse has been replaced, if 208V / 230V is reintroduced into the communication line, the PCB will be seriously damaged and will not recover.

L1R

L2

AC 208V/230V

Incorrect Wiring Reconnect wirings correctly.

5V

A B 1 2S

L1R

L2

AC 208V/230V

5V

A B 1 2S

ONOFF

DSW7

Set No.1 Pinat ON side.

PCB

1 2

1-28 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 25

1. The DIP switch settings for the outdoor unit should be performed in accordance with the "Installation and Maintenance Manual" for the outdoor unit.

2. Be aware that communication cable for the wired controller is required in these instances:a. The following functions are set to the sub unit which is not installed with the wired controller.

Remote ON/OFF function settings, (No.1, 2, and 3), (External Input / Output Function) Power supply ON/OFF functions, (No.1 and 2), (Function Selection) Prohibiting the wired controller after manual stoppage (External Input / Output Function) Group setting by the centralized controller

b. The combination of twin, triple, or quad is controlled by single wired controller.c. The address for the indoor unit is changed from the wired controller.

NOTICE

(10) Wired Controller Connection

VRF Systems

(b) Wired Controller connections between different refrigerant systems

(a) Wired Controllers at each unit for individual operation setting

Outdoor UnitA B

Outdoor UnitDOASUnit

StandardIndoor Unit

DOASUnit

StandardIndoor Unit

A BA BA B

Individual Simultaneous(Thermo ON / OFF individually)

Individual

WiredController

WiredController

WiredController

DOASUnit

DOASUnitA BOutdoor Unit A B

WiredController

WiredController

NOTE:DOAS unit must be operated with single wired controller only.Failure to do so can affect comfort and control.

NOTE:DOAS unit must be operated using single wired controller (CIW01) (individual) only.Failure to do so can affect the comfort and control.Thermo-ON: The outdoor unit and some indoor units are running.Thermo-OFF: The outdoor unit and some indoor units stay on, but don’t run.

SM-16006-rev.1 1-29

INSTALLATION

26 P00860Q-rev.2

< Caution for Electrical Wiring > Do not connect the power supply wiring and the communication cable into one terminal. The manual switchbox is required when communication cable is required.

Indoor Unit

Switchbox

S

Indoor Unit Indoor Unit Indoor Unit

Indoor UnitIndoor Unit

SGFCI

GFCI

RL1

SL2

MpN

RL1

SL2

MpN

RL1

SL2

MpN

RL1

SL2

MpN

RL1

SL2

MpN

RL1

SL2

MpN

1-30 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 27

8.4 Wiring Connection(1) Remove the connecting hole cover of the electrical box and install the rubber bush (Accessory) to the

connecting hole for communication cable.(2) Pass the communication cable and the wired controller cable through the connecting hole for

communication cable. Connect the communication cable to the terminals 1, 2 of TB2 in the electrical box. Connect the wired controller cable to the terminals A, B of TB2 in the electrical box.

(3) Pass the power supply wiring and the ground wiring through the connecting hole for power supply wiring. Connect the power supply wiring to the terminals L1, L2 of TB1 in the electrical box. Connect the ground wiring to the ground terminal inside the electrical box. (When connecting the power supply wiring and the ground wiring outside of the unit, run through the conduit tube.)

(4) Tightly clamp the power supply wiring, the ground wiring, the wired controller cable and the communication cable utilizing the cord band.

Unit: inch [mm]

Produced in 2017 or earlier

L2L1 1 2 BA

Wired Controller CableCommunication Cable

Cord Clamp

PVC Tube (Accessory)

TB1 TB2

Power Supply Wiring

Ground Wiring

Cord Clamp

2-1/

4[5

7]

2-3/

8[6

1]

3-3/

16[8

1]

6-5/16 [160]

7-11/16 [195]

φ1-1/8 [27.8] Wiring Holefor Conduit Tube

φ1-1/8 [27.8] Wiring Holewith Rubber Bush

For Power Supply Wiring

For CommunicationCable


SM-16006-rev.1 1-31

INSTALLATION

28 P00860Q-rev.2

Wired Controller Cable

Power Supply Wiring

Ground Wiring

Communication Cable

Cord Clamp

Cord Clamp

PVC Tube (Accessory)

TB1 TB2

For Power Supply WiringFor CommunicationCable

φ1-1/8 [27.8] Wiring Hole for Conduit Tube

φ1-1/8 [27.8] Wiring Hole with Rubber Bush6-15/16

[177]

8-9/16[217]

2-5/

16[5

8]


• Insert the communication cables and wired controller cable into the PVC tube “VW-1 600V” (Accessory) to separate them from the power supply wirings in the indoor unit.

• Fix the both ends of the PVC tube by cable clamp (Accessory).• If shielded cable is used, terminate at the ground terminal.

NOTE

Unit: inch [mm]

Produced in 2018 or later

Electrical control box cover with cut-out panel

1-32 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 29

(4) Capacity Code Setting (DSW3) No setting is required, due to setting before shipment. This switch is utilized for setting the capacity code which corresponds to the capacity of the indoor unit.

(3) Unit No. Setting (RSW1 & DSW6) Setting is not required. Indoor unit numbers are set by the auto-address function. If an indoor unit number setting is required, set the unit number of all indoor units respectively and sequentially by following setting position. It is recommended that you assign a number to each indoor unit from “1”. A maximum of 64 indoor units per refrigerant cycle can be connected to an H-LINK ll System. Though the available numbers range from zero to 63, the applicable number for the 64th indoor unit in theory supplants the number "zero". For the centralized control, this setting is required.

1 2 3 4

ON

OFF

1 2 3 4

ON

OFF

(5) Unit Model Code Setting (DSW4) No setting is required. It is for setting the model code of the indoor unit.

1 2 3 4 5 6

ON

OFF 1 2 3 4 5 6

ON

OFF

DSW6 (Tens Digit)Unit No. Setting

RSW1 (Units Digit)

SettingPosition

Set by insertingslotted screwdriverinto the groove.

Ex.) Set at No.16 UnitDSW6

RSW1

Set No.1 Pin at ON side

Set at "6"

34

1089 2

567

34

10

89 2

567

Before shipment, DSW6 and RSW1 are set at "0".

For the units supporting H-LINK II,the unit No. can be set for Max. 64 indoor units(No.0~63).

8.5 DIP Switches Setting(1) Turn OFF the power supply to both indoor and outdoor units before adjusting DIP switch settings.

Otherwise, the setting will be invalidated and not take effect.(2) Positions of DIP switches are shown below.

SM-16006-rev.1 1-33

INSTALLATION

30 P00860Q-rev.2

(6) Refrigerant Cycle No. Setting (RSW2 & DSW5) This setting is required. The unit arrives with all settings in the OFF position.

(7) Fuse Recover (DSW7)

* Factory Setting

* In the case of applying high voltage to the terminal 1 and 2 of TB2, the 0.5A fuse on the PCB is cut. In such a case, first reconnect the wirings correctly to TB2, and then set the No.1 pin to ON.

1 2

ON

OFF

1 2

ON

OFF

34

10

89 2

567

34

10

89 2

567

1 2 3 4 5 6

ON

OFF 1 2 3 4 5 6

ON

OFF

DSW5 (Tens Digit)Refrigerant Cycle No. Setting

RSW2 (Units Digit)

SettingPosition


Ex.) Set at No.5 CycleDSW5

RSW2

Set All Pins OFF

Set at "5"

Before shipment, DSW5 and RSW2 are set at "0".

For the units supporting H-LINK II,the ref. cycle No. can be set for Max. 64 cycles.(No. 0~63)

Turn OFF all power supply of the indoor units and the outdoor units before DIP switch settings. Otherwise, the setting will be invalidated and not take effect.

NOTES: The “” mark indicates setting for DIP switches. Figures show setting before shipment. When the unit number and the refrigerant cycle are set, record the unit number and refrigerant cycle to

facilitate service and maintenance thereafter.

NOTICE

8.6 Function Selection by Wired ControllerEach function can be selected with the wired controller. Refer to the “Installation and Maintenance Manual” for the wired controller and the “Engineering Manual” for details.

< Selecting Thermistor for Detecting Indoor Temperature >Refer to Section 5.8 “Setting of Wired Controller and Remote Sensor”.

< Constant Air Volume Mode >The airflow volume can be fixed with the item code of function selection set “b2” by optional wired controller, even when defrosting operation or hot start is performed. This function can help keep the balance of a supply/exhaust air volume. Therefore, if a ventilating fan is installed, it is useful.

Item Code Optional Function Setting Conditionb2 Constant Air Volume Mode 01

NOTE: Because this mode is for constant airflow volume, a cold draft may discharge especially in a season when the Heating Operation is often used (defrosting operation and hot start is performed). Be careful of airflow direction when selecting the installation location. Consult with your customer.

(8) Control Mode Setting (DSW8) If the control mode type is "Outlet Air Temperature Control", this setting is required depending on the setting method of control mode. Refer to Section 8.7 "Setting of Control Mode".

1-34 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 31

8.7 Setting of Control ModeThe following procedure shows the setting by CIW01.

The Indoor Temperature Control mode has been set at factory. It can be changed to Outlet Air Temperature mode, so comply with the following instructions according to the installation conditions and purposes. And the settings are necessary for both the indoor and outdoor unit. If either is failed to set, the Outlet Air Temperature mode is not available. Make sure to complete both settings. (Even if either is failed to set, the alarm does not go off.)

8.7.1 Setting of Indoor Unit by Optional Wired ControllerTurn ON the power supply (mains) and comply with the following procedure. However, if the position of No.3 (DSW8: The Setting for Control Mode) is ON, the change of setting by optional wired controller is not available. Make sure to check it.

DOAS cannot set Outlet Air Temperature Control when combined with other standard indoor units.

Factory Settings are all OFF.

DSW8 (Control Mode Setting)

1 2 3

ONOFF

The “ ” mark indicates position of DIP switches.

SM-16006-rev.1 1-35

INSTALLATION

32 P00860Q-rev.2

OK

Function Selection:01-03

Cb 00 01

23

CC -- Cd 00 CE 00 CF 00

Item Setting

/

Adj. Entr RtrnSel. Back


01

23

Cb 00 CC -- Cd 01 CE 00 CF 00

Item Setting

/

Adj. Entr RtrnSel. BackOK Back

8.7.2 Function Selection and Input/Output Setting

1. Press and hold “Menu” and “Back/Help” simultaneously for at least three seconds during the normal mode (when unit is not operated). The Test Run menu will be displayed.

2. Select “Function Selection” from the Test Run menu and press “OK”.

OK

Test Run Menu

Elevating Grille SettingInput/OutputThermistor SelectionFunction Selection 01

/03

Test Run

Entr RtrnSel. Back

OK

Function Selection

01-01All

01-0201-0301-04

Entr RtrnSel. Back

3. Select the indoor unit by pressing “ ” and touch “OK”. (This screen is NOT displayed when the number of an indoor unit connected with the controller is "1". In this case, "4" will be displayed.)

4. Press “ ” and select the item "Cd".

5. Press “ ” and change the setting from "00" to "01".

7. Select “Yes” and press “OK”. The Test Run menu will be displayed after the setting is confirmed. If “No” is selected, the screen will return to "4".

OK

Confirm functionselection setting?


Yes No

Sel. Entr RtrnBack

6. Press “OK” so that the confirmation screen will be displayed.

8. Press “Back/Help” on the Test Run menu to return to the normal mode.

(Figure for Function Selection)

To set other units, press “Back/Help” at "4" and "5" so that the screen will return to "3". (If the number of an indoor unit connected with the controller is "1", the screen will return to "1".)

Item Code

SettingCondition

Indoor Temperature ControlCd

00

Outlet Air Temperature Control 01

1-36 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 33

If the Outlet Air Temperature Control Mode is set by DSW8, the setting of optional wired controller automatically changes to the Outlet Air Temperature Control Mode (“Cd:01“) as well. However, after that process, even if the change to Indoor Temperature Control mode is carried out by setting DSW8, the setting of optional wired controller still keeps the Outlet Air Temperature Control Mode. Therefore, setting of the Indoor Temperature Control mode (“Cd:00”) by wired controller is necessary separately.

(1) Remove the electrical box cover according to Section 8 “Electrical Wiring”, and Section 8.4 “Wiring Connection”. Refer to Section 8.5 ”DIP Switches Setting” for the location of DSW8 (Control Mode).

(2) Set DSW8 (Control Mode) on PCB according to the installation conditions and purposes, following the figure as shown below.

(3) Fix the electrical box cover again.

All shall be OFF.

Indoor Temperature Control(Factory Setting) Outlet Air Temperature Control

1 2 3

ONOFF

The “ ” mark indicates position of dip switches.

No.3 shall be ON.

DSW8 (Control Mode Setting)

1 2 3

ONOFF

Range of Setting TemperatureHeating Cooling

Indoor Temperature Control 66 to 86oF (19 to 30oC) 62 to 86oF (17 to 30oC)Outlet Air Temperature Control 56 to 77oF (13 to 25oC) 66 to 86oF (19 to 30oC)

8.7.3 Setting by DSW8 (Control Mode) on PCB

8.7.4 Setting of Indoor UnitAfter setting the indoor unit for control mode, check to ensure that the range of the setting temperature on optional wired controller shall be within as shown in the table below. If the range of setting temperature are exceeded, it means a failure of setting. Set again by following the procedure of the setting the indoor unit for the control mode.

Turn OFF all the power supply (mains) of indoor units and outdoor units before DIP switch setting. If not, the setting will be invalid.

SM-16006-rev.1 1-37

INSTALLATION

34 P00860Q-rev.2

Setting Item7-Segment Display

ContentsSEG2 SEG1

Outlet Air Temperature Control for DOASInitial Setting

Outlet Air Temperature Control

Outdoor Unit Function Selection by Wired Controller Contents

Type Model Item Code Setting Condition

- -b1

00 Initial SettingTop Flow (H,Y)VAHP_B(3,4)1S 01

8.8 Setting of Connected Outdoor Unit TypeSet "Function Selection (b1)" by optional wired controller according to Section 8.7 “Setting of Control Mode”.

NOTE: Make sure to set “b1”. If not, it may cause a failure of the unit.

8.7.5 Setting of Outdoor Unit The applicable outdoor units of this setting are as below.

The setting of outdoor units for the control modes shall be performed by the function setting " " of outdoor unit.(1) Turn on "DSW4-No.4" and "DSW7-No.4" on the outdoor PCB (Printed Circuit Board).

The function setting mode " " will be indicated on the 7-segment display.(2) Move to selecting of the function setting stage by pressing "PSW1".(3) Press "PSW4" or "PSW2" and select the item " ".(4) Press "PSW5" or "PSW3" and change the setting from " " to " ".

If the outdoor unit is NOT the applicable outdoor units. Refer to "Installation & Maintenance Manual" of the outdoor unit for details of setting control mode.

(5) Turn off "DSW7-No.4" during indicated the function setting mode. Then, turn off "DSW4-No.4".

NOTE: The setting should be performed during the outdoor unit stoppage. For a combination of outdoor units, set it to outdoor unit A. (The setting cannot be performed to outdoor unit B, C, and D.) Outdoor unit A is the unit to which the communication cable between the outdoor unit and indoor unit is connected.

< Applicable Outdoor Units >Type Model

Top Flow (H,Y)VAHP_B(3,4)1S

1-38 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 35

9. Test Run

Test Run Screen

9.1 Before Test RunVerify that there are no problems with the installation, and do not perform Test Run until all the following conditions have been resolved. Refer to the "Installation and Maintenance Manual" for the outdoor unit for details on Test Run operations from the outdoor unit. Verify that refrigerant piping and the communication cable are connected to the same refrigerant cycle system. If not, it will cause an abnormal operation and damage to instrumentation.

(1) Verify that electrical resistance is more than one megaohm, by measuring the resistance between ground and the terminal the terminus for electrical components. If the electrical resistance is less than one megaohm, do NOT operate the system until the electrical current outflow to ground is detected and repaired. Do not introduce any high voltage to the terminals of the communication cables (TB2 [A, B, 1 and 2]).

(2) Verify that each wire is connected correctly at the correct phase for the power supply. If it is incorrectly connected, the unit will not operate and the wired controller will display the alarm code “05”. In this case, check the phase for the primary power supply according to the “Attention” label affixed to the back side of the service cover. Then, with the power supply turned OFF at the power supply, remake the necessary connections.

(3) Check to ensure that the main power supply has been turned ON for more than 12 hours, to warm up the compressor oil by the crankcase heater.

(4) Verify that all DIP Switch settings are correct. Refer to Section 8.5 “DIP Switches Setting”.

9.2 Test RunAfter all installation work is completed, Test Run should be performed.

(1) Check to ensure that stop valves (gas and liquid) for the outdoor unit are fully opened.(2) Whenever indoor units are connected to the VRF system, perform the Test Run for the indoor units one

by one sequentially and then check the refrigerant piping system and the electrical wiring system for conformity. (If these multiple indoor units are operated simultaneously, system conformity cannot be verified.)

(3) Perform the Test Run in accordance with the following procedure. Ensure that the Test Run is carried out without any problem. The following procedure shows a case where a wired controller is utilized. If other controllers are activated instead, refer to the "Installation and Maintenance Manual" for those other controllers.

NOTE: The outdoor unit may not be operated depending on the indoor and outdoor temperature conditions. Refer to the "Installation and Maintenance Manual" for outdoor units for details.

(a) Press and hold “Menu” and “Back/Help” simultaneously for at least 3 seconds. The Test Run menu will be displayed.

The Test Run menu will be displayed.

BackAdj.Sel. ON Rtrn

Test Run Setting: 2 units

MODESPEED AUTO

COOL

NOTEWhen the “00 unit” is displayed, the auto-address function may be working. Cancel “Test Run” mode and reset.

The total number of connected indoor units is indicated on the LCD (Liquid Crystal Display). In the case of a twin combination (set of two indoor units), the total number of the connected indoor units is displayed as “2 units”, and where there is a triple combination (set of three indoor units), the total number of the connected indoor units are displayed as "3 units".

SM-16006-rev.1 1-39

INSTALLATION

36 P00860Q-rev.2

If the number indicated is not equal to the actual number of connected indoor units, the auto-address function is not performing correctly due to incorrect wiring or electrical interference. Turn OFF the power supply, and resolve the wiring issue after verifying the following items; (Do not repeat turning ON and OFF within a 10 second timespan.) The power supply to the indoor unit is not turned ON or there is an incorrect wiring issue. Incorrect connection of the interconnecting cable between indoor units or a poorly connected

controller cable. Incorrect setting of the rotary switch and DIP switch for the indoor unit printed circuit board (PCB).

(The setting is overlapped.) Press “ On/Off” to start the Test Run. Press “ ” and set each item.

(b) Press “ On/Off”. The RUN indicator turns ON and the operation starts. At this time, a two-hour OFF timer will be set automatically.

(c) Though temperature recordings by the thermistors are invalid during the Test Run phase, the protection devices are valid. Required Condition of Cooling Thermo-OFF:

Temperature Set by Wired Controller > Outdoor Temperature Required Condition of Heating Thermo-OFF:

Temperature Set by Wired Controller < Outdoor temperature(d) For VRF System

According to the label; “Checking Method by 7-Segment Display” affixed to the inside of the front cover of the outdoor unit, check temperature, pressure, and operation frequency, and interconnected indoor unit numbers by 7-Segment displays.

(e) To complete Test Run, press “ On/Off” again or wait for the set Test Run time to pass. When changing the Test Run time, press “ ” or “ ” to select “TEST TIME”. Then, set the test run time (30 to 600 minutes) by pressing “ ” or “ ”.

Adj.Sel. OFF

Test Run: 2 units

MODESPEED AUTO

COOL

Test Time 120minInverter 60Hz

The RUN indicator on the wired controller for the indoor unit will flash orange (0.5 second ON/ 0.5 second OFF), indicative of a fault or error having been generated with activation of protection devices during the Test Run phase. Alarm code, unit model code, and the number of interconnected indoor units will be displayed on the LCD as shown below. If the RUN indicator on the wired controller flashes for two seconds ON and two seconds OFF, the source of the problem could be a failure in the communication cable between the indoor unit and the wired controller (a loose or severed connection). In this case, verify Section 9.3 “Alarm Code” and perform the appropriate troubleshooting measures. Consult with an authorized service engineer if the problem cannot be resolved at your end.

< Unit Model Code >The relationship between the unit model code and the unit model is shown in the table below.

Indication Unit ModelF VRF SystemE Except Above Models

Sel. OP MODE

I.U. : RCI-3.0FSN3MODEL : F .02Alarm Code: 22

O.U. : RAS-3HVRNM2

01-02

AlarmRst

Address

Entr

IDU : ******ODU : ******

Chek

OK

Refrigerant Cycle No. of Indoor Unit HavingTrouble

Indoor Unit No. of Indoor UnitHaving Trouble

MODEL : F . 02

Alarm Code: 22 Alarm Code No.

Total No. of Indoor Units in theSame Refrigerant Cycle as theIndoor Unit Having Trouble

01 - 02

Unit Model Code

1-40 SM-16006-rev.1

INSTALLATION

P00860Q-rev.2 37

9.3 Alarm Code

When the RUN indicator flashes every four seconds, there is a communication failure between the indoor unit and the wired controller (loose connector, disconnected or incorrect wiring, or a severed connection).

The indication of the alarm code “EE” means serious abnormality to burn out the compressor.

Refer to the "Installation and Maintenance Manual" for the indoor/outdoor unit connections.

Alarm (Troubleshooting) Code TableCode No. Category Nature of Problem Likely Cause

01 Indoor Unit Activation of a protection device(Float switch)

Activation of the float switch; (High water level present in the drain pan.) A problem exists in the piping.

02 Outdoor Unit Activation of protection device;(Except for Alarm Code: 41, 42)

High Pressure Cut; (R410A: 601 psi (4.15MPa)), fan motor lockup during the outdoor unit cooling operation.

03 Communication Communication failure between indoor and outdoor units

Incorrect wiring, loose terminals, disconnected wiring or a blown fuse.

04-09 Problem with the outdoor unit; (Refer to the "Installation and Maintenance Manual" for outdoor units.)11

Sensor on Indoor Unit

Inlet Air Thermistor failure

Loosely connected, disconnected, or a severed connection.

12 Outlet Air Thermistor failure13 Freeze Protection Thermistor failure14 Gas Piping Thermistor failure

19 Fan Motor Problem with Indoor Fan Fan motor lockup, fan motor protection control device for indoor unit activated.

20-29 Problem with the outdoor unit; (Refer to the "Installation and Maintenance Manual" for outdoor units.)

31

System

Incorrect capacity setting for indoor and outdoor units

Incorrect capacity code setting for combination, excessive or insufficient total indoor unit capacity code.

32 Incorrect setting of other indoor unit number

Problem with a different Indoor Unit in the same refrigerant cycle; (Failure at the power supply, defective PCB).

35 Incorrect setting of indoor Indoor unit number duplicated in same refrigerant group.

36 Incorrect indoor unit combination Indoor unit is designed for other refrigerant; (R22 or R407C).

38-59 Problem with the outdoor unit; (Refer to the "Installation and Maintenance Manual" for the outdoor unit.)b0

System

Incorrect setting for unit capacity Incorrect setting for unit capacity

b1 Incorrect setting of unit and refrigerant cycle number Unit number or refrigerant cycle > 64

b5 Incorrect setting of indoor unit number for H-LINK type

Interconnected indoor units are not supportingH-LINK II > 17

EE Compressor Compressor protection alarmThis alarm code displays when the alarms such as damage to the compressor occur three times within a six hour period.

Routine Preventative MaintenancePerform routine preventative maintenance on the system to ensure high efficiency performance and containment of refrigerant over the life of the product. During installation, record the results of the following field procedures for future reference:1) Pressure and leak testing of field installed piping2) Triple evacuation and nitrogen purge of field installed piping3) Total refrigerant quantity in the system including factory charge and trim charge volumesThis information should be included in the owner's final documentation for project close-out. All technical service and maintenance procedures must be performed by trained and authorized personnel only.

All the installation work of the air conditioning is completed.Handover this information to the building owner and request to maintain all the equipment manuals and warranty.

Do NOT operate the air conditioning just to run checks on electrical wiring until preparations for the Test Run phase is completed.

NOTICE

SM-16006-rev.1 1-41

INSTALLATION

The above contents are described in the Service Manual No. SM-15001.

1.4 Control Device 1.4.1 Wired Controller1.4.2 SimplifiedWiredController1.4.3 Wireless Controller1.4.4 Mini Central Controller1.4.5 Large Central Controller1.4.6 Computerized Central Controller Management Software1.4.7 Computerized Central Controller Software / Operation Ratio1.4.8 Computerized Central Controller Adapter

SM-16006-rev.1 2-1

OPERATION

2. Operation

2-2 SM-16006-rev.1

OPERATION

- Table of Contents -1. Introduction ....................................................................................................................................................2-3

2. Safety Instructions .........................................................................................................................................2-3

3. Before Operation ............................................................................................................................................2-83.1 Working Range ......................................................................................................................................2-83.2 EfficientUseofIndoorUnit ....................................................................................................................2-83.3 Control Mode .........................................................................................................................................2-9

4. Names of Parts ..............................................................................................................................................2-104.1 IndoorUnit(DOAS) ...............................................................................................................................2-104.2 WiredController(CIW01) ......................................................................................................................2-11

5. Operation Method ..........................................................................................................................................2-125.1 Basic Operation .....................................................................................................................................2-125.2 Cooling / Heating / Fan Operation .........................................................................................................2-135.3 Temperature Setting ..............................................................................................................................2-145.4 Operation ...............................................................................................................................................2-15

6. AutomaticControl ..........................................................................................................................................2-16

7. Maintenance ..................................................................................................................................................2-177.1 CleaningAirFilter .................................................................................................................................2-177.2 Maintenance ..........................................................................................................................................2-18

8. Troubleshooting .............................................................................................................................................2-198.1 ThisisNotAbnormal .............................................................................................................................2-198.2 Before Contacting a Contractor .............................................................................................................2-208.3 ContactDistributor .................................................................................................................................2-218.4 AlarmCode ...........................................................................................................................................2-22

2.1 Indoor Unit2.1.1 DOAS Type

SM-16006-rev.1 2-3

OPERATION

P00861Q-rev.2 1

1. Introduction

2. Safety Instructions

Signal Words




General Precautions

To reduce the risk of serious injury or death, read these instructions thoroughly and follow all warnings or cautions included in all manuals that accompanied the product and are attached to the unit. Refer back to these safety instructions as needed.

This system should be installed by personnel certified by Johnson Controls, Inc. Personnel must be qualified according to local, state and national building and safety codes and regulations. Incorrect installation could cause leaks, electric shock, fire or explosion. In areas where Seismic Performance requirements are specified, the appropriate measures should be taken during installation to guard against possible damage or injury that might occur in an earthquake if the unit is not installed correctly, injuries may occur due to a falling unit.




Read this manual carefully before working with this product. Keep this information with the product.

2-4 SM-16006-rev.1

OPERATION

2 P00861Q-rev.2

Before servicing, turn-OFF current at the power source and use accepted lockout and tag out procedures at all main switches.

This unit is the pressurized system. Never loosen threaded joints while the system is under pressure and never open pressurized system parts.

Johnson Controls will not assume any liability for injuries or damage caused by not following steps outlined or described in this manual. Unauthorized modifications to Johnson Controls products are prohibited as they… May create hazards which could result in death, serious injury or equipment damage; Will void product warranties; May invalidate product regulatory certifications; May violate OSHA standards;





Before installation is complete, make sure that the refrigerant leak test has been performed. If refrigerant gases escape into the air, turn OFF the main switch, extinguish any open flames and contact your service contractor. Refrigerant (Fluorocarbon) for this unit is odorless. If the refrigerant should leak and come into contact with open flames, toxic gas could be generated. Also, because the fluorocarbons are heavier than air, they settle to the floor, which could cause asphyxiation.



A compressor/unit comprises a pressurized system. Never loosen threaded joints while the system is under pressure and never open pressurized system parts.


SM-16006-rev.1 2-5

OPERATION

P00861Q-rev.2 3





Only use electrical protection equipment and tools suited for this installation. Use specified cables between units. Communication cable should be a minimum of AWG18 (0.82mm2), 2-Conductor, Stranded Copper.

Shielded cable must be considered for applications and routing in areas of high EMI and other sources of potentially excessive electrical noise to reduce the potential for communication errors. When shielded cable is applied, proper bonding and termination of the cable shield is required as per Johnson Controls guidelines. Plenum and riser ratings for communication cables must be considered per application and local code requirements.

Use an exclusive power supply for the air conditioner at the unit’s rated voltage. Be sure to install circuit breakers (ground fault interrupter, isolating switch, molded case circuit breaker

and so on), with the specified capacity. Ensure that the wiring terminals are tightened securely to recommended torque specifications. If a circuit breaker or fuse is frequently activated, shut down the system and contact your service contractor.

Clamp electrical wires securely with a cable clamp after all wiring is connected to the terminal block. In addition, run wires securely through the wiring access channel.

When installing the power lines, do not apply tension to the cables. Secure the suspended cables at regular intervals, but not too tightly.

Make sure that the terminals do not come into contact with the surface of the electrical box. If the terminals are too close to the surface, it may lead to failures at the terminal connection.

Turn OFF and disconnect the unit from the power supply when handling the service connector. Do not open the service cover or access panel to the indoor or outdoor units without turning OFF the main power supply.

After stopping operation, be sure to wait at least five minutes before turning off the main power switch. Otherwise, water leakage or electrical breakdown may result. Disconnect the power supply completely before attempting any maintenance for electrical parts. Check to ensure that no residual voltage is present after disconnecting the power supply.

Do not clean with, or pour water into, the controller as it could cause electric shock and/or damage the unit. Do not use strong detergent such as a solvent. Clean with a soft cloth.

Check that the ground wiring is securely connected. Do not connect ground wiring to gas piping, water piping, lighting conductor, or telephone ground wiring.

If a circuit breaker or fuse is frequently activated, shut down the system and contact your service contractor.

This equipment can be installed with a Ground Fault Circuit Breaker (GFCI), which is a recognized measure for added protection to a properly grounded unit. Install appropriate sized breakers / fuses / overcurrent protection switches, and wiring in accordance with local, state and NEC codes and requirements. The equipment installer is responsible for understanding and abiding by applicable codes and requirements.

2-6 SM-16006-rev.1

OPERATION

4 P00861Q-rev.2

Operation

Do not insert fingers or objects into air inlet/outlet. Injury can result from rotating fan blades or energized electrical components.

Do not touch the wired controller with wet hands. It can result in failure of the wired controller or an electrical shock.

Hair spray, insecticides, lacquers, and other pressurized substances should not be used within 3.3ft (1m) of any air conditioning unit. It can react with energized electrical components and cause fire.

Do not install the indoor unit anywhere discharge airflow can pass directly toward nearby heating appliances (space heaters). It may interfere with the combustion process in these units.

Air circulation should be optimized so as to achieve the best distribution pattern and not settle into isolated pockets that can make people uncomfortable.

When the indoor unit is operated with heating appliances, ventilate a room sufficiently. Any leaked refrigerant gases that happen to come into contact with any heat source can become toxic on contact which can cause suffocation in the immediate area.

Shut down at the main power source if the GFCI (Ground Fault Circuit Interrupter) activates frequently. Contact your distributor or contractor immediately. Failure to act accordingly can result in serious injury and damage to the unit.

CAUTION! If you smell anything burning, shut down the unit and turn OFF the power at the main power source. Contact the fire department and your installer or electrical contractor.

Make sure that a test for leakage of refrigerant gases has been performed. The refrigerant used for this unit (HFC R410A), is a non-flammable, non-toxic, and odorless gas. However if refrigerant should leak and make contact with sparks, fire; toxic gas will be generated. Also, because the fluorocarbon is heavier than air, the floor surface will be filled with it, which can cause suffocation.

If fluorocarbon gas should leak, turn OFF all heating appliances and ventilate the room immediately. Mop down or vacuum floor areas of residual toxic particulate.

CAUTION! Do not operate indoor units with the electrical box and switch panel open and exposed. Incidental contact with energized components can prove fatal.

SM-16006-rev.1 2-7

OPERATION

P00861Q-rev.2 5

Repair / Relocation

Others

Turn OFF all power at the main power source before performing maintenance work. Failure to do so can result in damage to internal components with severe or fatal electrical shock.

Insulate all electrical components and connections from exposure to moisture. Failure to do so can result in an electrical short, fire.

Do not tamper with or attempt to "repair" electrical wiring or connections. Call your installer or electrical contractor. Serious or fatal injury can occur.

Perform all maintenance work on a firm and stable platform to minimize the risk of injury. Do not attempt to "clean" indoor unit components with liquid or powdered cleaning agents during

maintenance. Electric shock, sparks, flame, and serious or fatal injury can occur. Inside piping is charged with refrigerant and highly pressurized.

Hold the air filter and the air inlet grille securely when attaching or removing it. Carelessness can result in accident or injury.

When the air conditioner is to be repaired or transported to a new location, contact your distributor or contractor. If the repair and the installation are not completed, it may cause an electric shock or fire.

2-8 SM-16006-rev.1

OPERATION

6 P00861Q-rev.2

3. Before Operation

Power is turned on. Apply power to the outdoor unit(s) at least 12 hours prior to operation of the system for preheating of the compressor oil. Make sure that the outdoor unit is not covered with snow or ice. If it is, remove it by using hot water that is approximately 122oF (50oC). If the water temperature is higher than 122oF (50oC), it will cause damage to plastic parts.

Turn OFF the main power switch when the system is stopped for a long period of time. If the main switch is not turned OFF, electricity is consumed because the oil heater is always energized during compressor stopping.

When the system is started after a shutdown longer than approximately three months, it is recommended that the system be checked by your service contractor.

NOTICE

3.2 Efficient Use of Indoor Unit

Do not leave a window or a door open. The operating efficiency will be decreased. It may cause condensation of the indoor unit. Ventilate a room sufficiently.

Attach a curtain or a blind to a window. Blocking direct sunlight into a room will increase efficiency.

Do not use heating appliances during cooling operation as much as possible. The cooling efficiency will be decreased, which may cause dew condensation and dew drop.

Use a circulator if warm air stays around the ceiling. Comfort will be increased. Contact your distributor for details for using a circulator.

Turn OFF the main power source if the indoor unit is not to be used for a long period. The standby electricity charges will have to be paid even if the indoor unit is unused.

3.1 Working Range

This heat pump air conditioner has been designed for the following temperatures. Operate the heat pump air conditioner within this range.

Temperature

Maximum Minimum

Outdoor AirCooling Operation 109oF DB (43oC DB) 68oF DB (20oC DB)

Heating Operation 59oF DB (15oC DB) 20oF DB (-7oC DB)

DB: Dry Bulb, WB: Wet Bulb

SM-16006-rev.1 2-9

OPERATION

P00861Q-rev.2 7

3.3 Control Mode

This unit have two control modes, “Indoor Temperature Control” and “Outlet Air Temperature Control”.The feature of each control mode is as shown below.(Contact your distributor or contractor about the changing of control mode and more details.)

Indoor Temperature Control

This function controls operation to keep the indoor temperature almost at the set temperature on the wired controller. The set temperature on the wired controller is as follows.

COOL / FAN 66oF to 86oF (19oC to 30oC)HEAT 62oF to 86oF (17oC to 30oC)

Outlet Air Temperature Control

l If multiple indoor units are connected to one outdoor unit, the temperature setting of all the indoor units shall be the same. Different temperature setting may make the outlet air temperature unstable.

This function controls operation to keep the discharge temperature almost at the set temperature on the wired controller. The set temperature on the wired controller is as follows.

COOL / FAN 56oF to 77oF (13oC to 25oC)HEAT 66oF to 86oF (19oC to 30oC)

NOTE

If the difference between the indoor temperature and the set temperature is too large or too small, the indoor temperature might not be close to the set temperature.

NOTICE

2-10 SM-16006-rev.1

OPERATION

8 P00861Q-rev.2

4. Names of Parts

4.1 Indoor Unit (DOAS)

< Installation Condition >

Drain PipingConnection

Air Inlet

Air Outlet

Gas PipingConnection

Liquid PipingConnection

Wired Controller(Optional)

The operating conditionis displayed on the LCD

Electrical Box

DOAS Indoor Unit

DOAS Indoor Unit

Air Outlet

Air Inlet

Discharge Air Duct(Field-Supplied)

Suction Air Duct (Field-Supplied)

Wired Controller(Optional)

Air Filter(Field-Supplied)

In some cases, it couldbe placed at otherplaces depending onthe installation work.

Remote Sensor (Accessory)

Make sure to mount thispart as essential to theoperation of the product.

SM-16006-rev.1 2-11

OPERATION

P00861Q-rev.2 9

Display Part

OK

Menu

Back/Help ECOOn/Off

A/C

MODE TEMP

COOL

LOUV. Adj.

Meeting Room FLTR

Filter Sign Indicator FLTRIt is indicated at the set period for filter cleaning.

Operation Lock Indicator It is indicated when the operation lock function is set. (*)

Schedule Timer Indicator It is indicated when the schedule timer function is set. (*)

Directional Key Enter Key

On/Off Switch

Run IndicatorIt lights while the unit is operated, and it flashes in abnormal conditions.

Operation Mode IndicatorThe indications of “HEAT” and “AUTO” are indicated only for the heat pump type models.

Operation Guide Indicator“Central Control” is indicated while the controller operation is prohibited.

Operation Part

ECO Switch (*)

Back/Help SwitchTo return to the previous screen.

Menu Switch (*)To display Menu.

Room Name Indicator (*)

NOTE This manual shows example CIW01 is utilized. If other models of the controller are utilized, operate the

unit according to the manual for that controller.

Press the switches lightly to control the wired controller. Do not press the wired controller with a sharp object such as a pen. It may cause damage to the control part.

(*) : For details description, refer to the operation manual for the wired controller.

The example below references the control panel and all adjustable settings. The wired controller display may be different during actual operation.

Setting Temperature Indicator

4.2 Wired Controller (CIW01)

2-12 SM-16006-rev.1

OPERATION

10 P00861Q-rev.2

Item Selection

By pressing “ ”or “ ”, the icon “ ” will move between “MODE”, “SPEED”, “LOUV.” and “TEMP”.

OK

Menu

Back/Help

Change of Settings

With (“MODE” or “TEMP”) selected,press “ ” or “ ”. The setting will be changed.

OK

Menu

Back/Help

5. Operation Method

5.1 Basic Operation

SM-16006-rev.1 2-13

OPERATION

P00861Q-rev.2 11

* Cooling Operation: To decrease the room temperature.* Heating Operation: To increase the room temperature.* Fan Operation: To circulate the air in the room.

Before Operation

Turn ON the power supply.Turn ON the main power approximately 12 hours before operation in order to preheat the compressor.

Do not turn OFF the main power of the indoor unit during season of heating or cooling.

Connecting

1

Press “ ” or “ ” to select “MODE”.

OK

Menu

Back/Help

2

By pressing “ ” or “ ”, the mode will be changed as follows.

OK

Menu

Back/Help

Automatic Cooling / Heating operation requires an extra setting. Contact your distributor or contractor for details.

Heating Operation is for VRF system only and is not available for other systems.

5.2 Cooling / Heating / Fan Operation

The control of humidity is unavailable with this unit. If you require dehumidification and the control of humidity, choose specialized equipments.

<Function>

FANHEAT (AUTO)COOL

2-14 SM-16006-rev.1

OPERATION

12 P00861Q-rev.2

1

Press “ ” or “ ” and select “TEMP”.

OK

Menu

Back/Help

2

By pressing “ ”, the temperature is increased by 1oF (0.5oC). By pressing “ ”, the temperature is decreased by 1oF (0.5oC). * Refer to Section 3.3 “Control Mode”

for the setting temperature range.

OK

Menu

Back/Help

In case the optional function “Automatic Reset of Setting Temperature” is set: Even if changing the setting temperature on the wired controller, it automatically returns to the temperature set by “Automatic Reset Temperature” after a set time.

Minimum and maximum temperature setpoint limits can be configured by selecting a cooling lower limit and heating upper limit in the “Function Selection” mode of the wired controller's Test Run Menu.

Contact your distributor or dealer for details on optional functions “Automatic Reset of Setting Temperature,” “Cooling Lower Limit for Setting Temperature” and “Heating Upper Limit for Setting Temperature.”

5.3 Temperature Setting

SM-16006-rev.1 2-15

OPERATION

P00861Q-rev.2 13

Operation Start

Press “ ” (On/Off). The RUN indicator will be turned ON and the operation will start.

OKOn/Off

< Temperature Setting > The setting condition will be memorized. Therefore, no daily setting is required. Temperature setpoint

will be retained after the indoor unit is turned OFF at the controller. In a case where the setting change is required, refer to Sections 5.2 and 5.3.

Operation Stop

Press “ ” (On/Off) again. The RUN indicator will be turned OFF and the operation will stop.

OKOn/Off

The indoor unit fan may continue to operate for up to two minutes following the heating cycle to dissipate residual heat from the indoor unit.

5.4 Operation

2-16 SM-16006-rev.1

OPERATION

14 P00861Q-rev.2

NOTE

This air conditioner adopts a hot air circulation system for the heating operation. If the space is large or the room temperature is excessively low, it takes time to heat the entire room. If the room has been heated enough and discharged air reaches a required temperature, the indication “HOT-START” will be turned OFF after heating the room.

The indication “HOT-START” may be displayed during, or right after, the defrosting operation. “HOT-START” is activated during defrost to ensure comfort by reducing the delivery of cold air in the heating cycle. This is NOT abnormal.

6. Automatic Control

This air conditioner automatically starts the following operations according to the indoor conditions.

Three-Minute Guard

Enforced Stoppage:The compressor remains off for at least three minutes once it has stopped. If the system is started within approximately three minutes after it has stopped, the RUN indicator is activated. However, the cooling operation or the heating operation remains off and does not start until after three minutes has elapsed.

Enforced Operation:If all indoor units of the system are Thermo-OFF within approximately three minutes after the compressor has started, the compressor is operated during three minutes continuously. However, if all indoor units of the system are stopped by a controller, compressor has stopped.

CoolingandDry

Frost PreventionWhen the indoor unit is operated at a low discharge air temperature, the cooling operation may be changed to fan operation for a while to avoid frost formation on the indoor heat exchanger.

Self-Cleaning of Expansion Valve

The expansion valve self-cleaning when the cooling operation has stopped. The sound of which the refrigerant flows may be heard from the indoor unit during the self-cleaning. This is not abnormal.

Heating

Hot StartTo prevent cold air discharge in the room, the fan speed is automatically changed according to the discharge air temperature. At this time “HOT-START” is displayed on the LCD of the wired controller.

Defrost Operation The indoor unit fan operation is stopped to prevent cold air discharge during the defrost operation.

Residual Heat Removal

When the heating operation is stopped, the indoor fan operation may be kept at the slow position for a maximum of two minutes to lower temperature of the inside of the indoor unit.

Freeze Protection

To prevent heat exchanger of the indoor unit from freezing, the operation mode automatically switches to heating operation if the outdoor temperature drops down to 32oF (0oC). Moreover, the operation automatically stops if the outdoor temperature drops to 20oF (-7oC) or the heat exchanger temp. drops abnormally.* Display of the wired controller does not change even in this case.* If the unit is not simultaneous cooling/heating unit, the operation does

not switch to heating operation, but automatically stops when the outdoor temperature drops to 32oF (0oC).

The system is equipped with the following functions.

SM-16006-rev.1 2-17

OPERATION

P00861Q-rev.2 15

7. Maintenance

(2) The indication "FLTR" is shown on the LCD of wired controller after the time is set on the wired controller. (Default filter time for the ducted units is 1200 hours.)

Turn OFF the power source before the maintenance work. If the power source is not turned OFF, the result may be an electric shock or fire.

Perform the maintenance work with a stable foothold or foundation. This may prevent falling or injury.

Hold the air filter and the air inlet grille securely by hand when attaching or removing it. If not, it may cause the product to fall, resulting in an injury.

NOTICE Do not operate the system without the air filter to protect the indoor unit heat exchanger from being

clogged.

Filter Sign

OK

Menu

Back/Help ECOOn/Off

A/C

MODE TEMP

COOL

LOUV. Adj.

Meeting Room FLTR

7.1 Cleaning Air Filter Clean the air filter when the filter sign is turned ON.

(1) Air filter is a field-supplied.The filter cleaning method is followed according to the manual included with the filter.

2-18 SM-16006-rev.1

OPERATION

16 P00861Q-rev.2

NOTE

(3) Reset the filter sign.

•Press “Menu”. Select “Reset Filter Sign Time” from the menu and press “OK”. The confirmation screen will be displayed.

•Select “Yes” by pressing “ ” or “ ” and press “OK”. The indication of “FLTR” will be turned OFF and the screen will return to the normal mode.

Menu

Power Saving SettingElevating GrilleOperation ScheduleReset Filter Sign Time 01

/05

Simple Timer15:10(Fri)

Entr RtrnSel. OK Back

If the accumulated operation time is shorter than the filter sign setting, the indication “ ” is turned ON and “Setting Disabled” will be displayed.

7.2 Maintenance

• Remove obstacles around the air inlet and the air outlet of the indoor unit and outdoor unit.

• Check that the air filter is not clogged with dust and dirt.

• Clean on regular basis the air filter, the air inlet grille to maintain the system's peak performance and efficiency.

Beginning of Start Up Regular Maintenance

SM-16006-rev.1 2-19

OPERATION

P00861Q-rev.2 17

8. Troubleshooting

8.1 This is Not Abnormal

Phenomenon Cause

Operation Stopped

All indication lights on the wired controller are turned OFF.

The micro-computer is activated to protect the device from electromagnetic waves. Restart the operation.

After Power FailureRestart the operation. If the instantaneous power failure is within two seconds, the operation restarts automatically.

Freeze ProtectionThe heat exchanger stops operating at low outdoor temperature. If the temperature rises, the operation automatically restarts

White Steam from Indoor Unit During Heating Operation This might occur during the defrosting operation in

the heating operation.White Smoke from Indoor Unit

At Beginning of HeatingOperation Season

This might occur when dust attached to the heat exchanger has been dried.

Mist from Indoor Unit

In Restaurant or Kitchen This might occur when oil attached to the fins might decrease the heat exchange efficiency.

During Cooling Operationin Humid Environment

This might occur when the air outlet temperature becomes lower.Raise the set temperature.

Sound from Indoor Unit

A grating sound is heard when starting or stopping the operation.

This is the sound made when the components are rubbing against each other due to the extension and contraction of the resin parts caused by the temperature change.

Sound of water flowing or bubbling during the operation.

This is the sound made when the refrigerant flows or the operation of the drain pump. The sound may be heard especially when starting the operation or stopping the compressor (for approx. three minutes).

Cracking sound is heard when starting and during the operation.

This is the temporary sound made when water attached to the heat exchanger has been frozen or melted during the cooling operation.

Condensation on Cabinet

Condensation on Air Outlet Grille or Cabinet or Dew Drops

This might occur when the operation is performed in humid place (relative humidity is approx. 80%) for a long time.

Cooling and Heating Operation Unavailable

Only fan operation is available.

This might occur because the operation mode automatically switches to fan operation depending on the outdoor temperature.

“HOT-START” on LCD Turned ON This might occur according to the operation mode or operation conditions.Operation Mode on LCD Flashing

l Fixed air speed mode is available for this unit, in order to keep the air speed constant. If activating this function, the air speed is kept constant and cannot be changed during defrosting operation, which will cause cold draft during heating operation. Contact your distributor or contractor when setting this function.

Fixed Air Speed Mode

2-20 SM-16006-rev.1

OPERATION

18 P00861Q-rev.2

Refer to the information below before contacting a contractor.

8.2 Before Contacting a Contractor

Trouble Check Point Action

Operation Unavailable

Check that the main power source is turned ON.

Turn ON the main power source for the air conditioner.

Check that the fuse is not blown out or the circuit breaker of the main power source tripped.

Replace the fuse or reset the circuit breaker.If the trouble recurs, contact your contractor or distributor.

Immediate Shutdown after Start-up

Check for any obstacles preventing the air flow near the air inlet and outlet of the outdoor unit.

Remove the obstacles preventing the air flow.

Insufficient Cooling or Heating

Check that the operation mode is correct.

If the fan mode is selected, switch the operation mode to cooling or heating.

Check that the set temperature is correct.

If not, change the set temperature by pressing “ ” or “ ” by the wired controller.

Check that the air filter is not clogged. Clean the air filter.

Check that a window or a door is not opened. Close the window or the door.

Check for any obstacles preventing the air flow near the air inlet and outlet of the indoor and outdoor units.

Remove the obstacles.

Check for “Fixed Air Speed Mode” setting.

The air speed cannot be changed during defrost operation, which will cause cold draft during heating operation.

Excessive Cooling or Heating

Check that the set temperature is correct.

If not, change the set temperature by pressing “ ” or “ ” by the wired controller.

SM-16006-rev.1 2-21

OPERATION

P00861Q-rev.2 19

Trouble Action before Contacting Contractor or Distributor

The protection devices (fuse, breaker, GFCI, and so forth) are frequently activated or the operation switch does not work.

Turn OFF the power source.

Water Leakage from the Indoor Unit. Stop the operation. The RUN indicator (red) is flashing. The indoor unit number, the alarm code, the unit model

code and the number of connected indoor units are displayed on the LCD.

In a case where the plural indoor units are connected to one controller, the above abnormality informations for each indoor unit is displayed individually.

Check the details on the LCD and contact your distributor.Refer to the alarm code table. Contact your distributor and advise the indication detail on the wired controller.

Provide the following information when contacting your distributor.1) Unit Model2) Explain the Trouble or Problem 3) Alarm Code No. on the LCD or Details of a Flashing Indicator

8.3 Contact DistributorIf problem still remains even after checking previous issues or other problems not mentioned in the previous issues occur, stop using the product and contact your distributor or contractor.

If an abnormality such as a burnt odor or something similar occurs, stop the operation and turn OFF the main power source immediately. If the power source is not turned OFF, there may be damage of the product, an electric shock or a fire. Contact your distributor or contractor.

Sel. OP MODE


Indoor Unit Number

O.U. : RAS-3HVRNM2

01-02

AlarmRST

Address

Entr

IDU : ******ODU : ******

Chek

OK

2-22 SM-16006-rev.1

OPERATION

20 P00861Q-rev.2

8.4 Alarm Code

Code Category Content of Abnormality Code Category Content of Abnormality

01 Indoor Unit Activation of Protection Device 35

System

Incorrect Setting of Indoor Unit No.

02 Outdoor Unit Activation of Protection Device (High Pressure Cut) 36 Incorrect Indoor Unit Combination

03Communication

Operational Irregularities between Indoor and Outdoor 38 Problem with Protective Pickup Circuit

in Outdoor Unit

04 Problem between Inverter PCB and Outdoor PCB 39 Compressor Problem with Running Current at Con-

stant Speed Compressor

05 Supply Phase Problem of Power Source Phases 41Pressure

Overload Cooling

06 Voltage Abnormal Voltage Drop in Outdoor Unit 42 Overload Heating

07Cycle

Decrease in Superheated Discharge Gas 43

Protection De-vice

Activation of Pressure Ratio Decrease Protection Device

08 Increase in Discharge Gas Tempera-ture 44 Activation of Low Pressure Decrease

Protection Device

09 Outdoor Unit Activation of Protection Device for Outdoor Fan 45 Activation of Low Pressure Increase

Protection Device

11

Sensor on Indoor Unit

Inlet Air Thermistor Failure 46 Activation of High Pressure Increase Protection Device

12 Outlet Air Thermistor Failure 47 Activation of High Pressure Decrease Protection Device

13 Freeze Protection Thermistor Failure 48 Activation of Overcurrent Protection Device

14 Gas Piping Thermistor Failure 51

Inverter

Problem with Inverter Current Sensor

16Other

Sensor

Abnormal Indoor Remote Sensor 52 Activation of Inverter Overcurrent Protection

17 Abnormal the embedded wiredcontroller Thermistor 53 Activation of Transistor Module

Protection

19 Fan Motor Activation of Protection Device for Indoor Fan 54 Abnormality of Inverter Fin

Temperature

20

Sensor on Outdoor Unit

Compressor Thermistor Failure 56

Outdoor Fan

Abnormality of Detection for Fan Mo-tor Position

21 High Pressure Sensor Failure 57 Activation of Fan Controller Protection

22 Outdoor Air Thermistor Failure 58 Abnormality of Fan Controller

23 Discharge Gas Thermistor Failure b0System

Incorrect Setting of Unit Capacity

24 Evaporating Thermistor Failure b1 Incorrect Setting of Unit andRefrigerant Cycle No.

29 Low Pressure Sensor Failure EE Compressor Compressor Protection Alarm

31System

Incorrect Capacity Setting of Outdoor Unit and Indoor Unit

32 Incorrect Setting of Other Indoor Unit Number

SM-16006-rev.1 2-23

OPERATION

The above contents are described in the Service Manual No. SM-15001.

2.2 Control Device 2.2.1 Wired Controller2.2.2 SimplifiedWiredController2.2.3 Mini Central Controller2.2.4 Large Central Controller2.2.5 Computerized Central Controller Management Software2.2.6 Computerized Central Controller Software / Operation Ratio

SM-16006-rev.1 3-1

TROUBLESHOOTING

3. Troubleshooting

3-2 SM-16006-rev.1

TROUBLESHOOTING

Check the following items for any abnormalities in the activation of the system.No. Check Situation Check Method1 Is any power source breaker or

fuse open?Check the voltage (secondary side) of the breaker and also check the continuity of the fuse with a tester.

2 Is the voltage at the secondary side of the transformer correct?

Disconnect at the secondary side of the transformer and measure voltage with a tester.

3 Is the wiring firmly secured and correctly connected?

Check that the following wiring connection on O.U./I.U. printed circuit boards (PCBs) is not loose.• The connection for thermistors• The connection for the wired controller cable• The connection for communication cable• Each connection for power source lineCheck that the wiring connection on O.U./I.U. PCBs is not loose or misconnected on the site according to the “Electrical Wiring Diagram” of the Engineering Manual.

NOTE:If the fuse(s) on an I.U. PCB blow out, diagnose the cause of overcurrent and recover the fuse(s). In addition, check the power source of optional parts because the fuse may blow out because of the power source failure.

3.1 Initial Troubleshooting

3.1.1 Checking Electrical Wiring and Power Source

SM-16006-rev.1 3-3

TROUBLESHOOTING

For Outdoor Unit


For Indoor Units

Select wiring capacity according to Table 1.1 below. This equipment can be installed with a Ground Fault Circuit Interrupter (GFCI), which is a recognized measure for added protection to a properly grounded unit. Install appropriate sized breakers / fuses / overcurrent protection switches, and wiring in accordance with local, state and NEC codes and requirements. The equipment installer is responsible for understanding and abiding by applicable codes and requirements.

NOTE:DOAS unit cannot be connected with Heat Recovery System.

< Heat Pump System >

The electrical wiring capacity of the outdoor unit is according to the “Installation and Maintenance Manual” of the outdoor unit. Setting DIP switches may be required depending on the combinations with the outdoor unit.

OutdoorUnit

IndoorUnit

Switchbox

Outdoor UnitPower Supply

Indoor UnitPower Supply

IndoorUnit

IndoorUnit

GFCI

MainSwitch

GFCI

MainSwitch

Refer to the “Installation and Maintenance Manual”for the connected outdoor unit for details of wire,GFCI and main switch for outdoor unit.

3-4 SM-16006-rev.1

TROUBLESHOOTING

NOTES:1) Follow local codes and regulations when selecting field wires.2) This equipment can be installed with a Ground Fault Circuit Interrupter (GFCI), which is a recognized measure for

added protection to a properly grounded unit. Install appropriate sized breakers / fuses / overcurrent protection switches, and wiring in accordance with local, state and NEC codes and requirements. The equipment installer is responsible for understanding and abiding by applicable codes and requirements.

3) Total operating current should be less than 12A.4) Fuse should be slow blowing capability.

This equipment can be installed with a Ground Fault Circuit Interrupter (GFCI), which is a recognized measure for added protection to a properly grounded unit. Install appropriate sized breakers/ fuses/ / overcurrent protection switches, and wiring in accordance with local, state and NEC codes and requirements. The equipment installer is responsible for understanding and abiding by applicable codes and requirements. Check the recommended size of ELB shown in Table 1.1. Select high-sensitive high speed ELB or GFCI when the rated sensitive current is less than 30mA. (The motion time should be within 0.1 second.)

Between indoor and outdoor units, use dual-conductor, AWG18 (0.82mm2) stranded copper cable for communication cable. Do not use any cable with more than two conductors. Twisted pair or shielded cable can be used in environments with excessive electrical noise to reduce the possibility of communication errors between system components. Total cable length should not exceed 3281 ft (1000m).

Select the wiring size, GFCI (Ground Fault Circuit Interrupter) in accordance with the regulations for each region, the “Installation and Maintenance Manual”, and the dedicated electrical circuit that must be used.

Outside of the indoor unit, installation of the power supply wiring, communication cable, and wired controller cable should be spaced as far apart as possible.

NOTICE

Table 1.1 Recommended Wiring Capacity and Size

Model PowerSupply

Minimum Wire Thickness [AWG (mm2)]

GFCI<Ground Fault

Circuit Interrupter>Main Switch MCA

(MinimumCircuit

Ampacity)Power SourceWiringSize

< Main >

GroundWiringSize

Commu-nicationCableSize

Nominal Current

Nominal Sensitive Current

NominalCurrent Fuse

[A] [mA] [A] [A] [A]

(H,Y)DOA096B21S1~,

208/230V60Hz

18 (0.82) 18 (0.82) 18 (0.82) 15 30 15 15 4.3

Dedicated Outdoor Air System (DOAS)

SM-16006-rev.1 3-5

TROUBLESHOOTING

Wired Controller Connecting Diagram

(b) Wired Controller connections between different refrigerant systems

(a) Wired Controllers at each unit for individual operation setting

Outdoor UnitA B

Outdoor UnitDOASUnit

StandardIndoor Unit

DOASUnit

StandardIndoor Unit

A BA BA B

Individual Simultaneous(Thermo ON / OFF individually)

Individual

WiredController

WiredController

WiredController

DOASUnit

DOASUnitA BOutdoor Unit A B

WiredController

WiredController

NOTE:Each DOAS unit must have it’s own wired controller.

NOTE:Each DOAS unit must have it’s own wired controller.Thermo-ON: The outdoor unit and some indoor units are running.Thermo-OFF: The outdoor unit and some indoor units stay on, but don’t run.

3-6 SM-16006-rev.1

TROUBLESHOOTING

3.1.2 Location of Printed Circuit Boards (PCBs)

(1) Outdoor Unit Refer to the Service Manual No. SM-15001.

(2) Indoor Unit

DOAS

< (H,Y)DOA096B21S >

PCB1P

CB

2CA

2C

FC EF3 TF

TB1

CA

1

EF4

TB2

NF

SM-16006-rev.1 3-7

TROUBLESHOOTING

DOAS

< (H,Y)DOA096B21S >

3.1.3 Checking Rotary Switch and DIP Switch SettingsThe following diagram indicates the factory settings of DSWs on PCBs in the indoor and outdoor units. When simultaneous operation control of multiple units or room thermo control is operated, the DSW setting will be different as shown below.

(1) Outdoor Unit (Factory Setting) Refer to the Service Manual No. SM-15001.

(2) Indoor Unit (Factory Setting) The positions of the DIP switches on the PCB are shown in the figure below. Turn OFF all power

sources before setting. Without turning OFF all power sources, the switches do not work and the settings are invalid. The “n” mark indicates the position of DIP switches.

DIP Switch Settings(1) Turn OFF the power supply of the indoor unit and the outdoor unit before DIP switch setting. Not

doing so makes the setting invalid.(2) Factory settings for DSW6 and RSW1 are set to “0”. If connecting the indoor unit to H-LINK II

supporting the outdoor unit without setting any DIP switches, auto-address setting will be performed by the wired controller.

(3) Auto-Address Setting by Wired Controller The address numbering is started from “0” by the auto-address function when the wired controller is connected to H-LINK II.

(4) Unit No. Setting (RSW1 and DSW6) The indoor unit numbers of all indoor units are not required. The indoor unit numbers are set by the auto-address function. If the indoor unit number setting is required, set the unit numbers of all indoor units respectively and serially by following setting positions. It is recommended to assign a number to each indoor unit beginning with “1.” Though a maximum of 64 indoor units per refrigerant system can be connected to the H-LINK ll System, available numbers range from 0 to 63. Therefore, the applicable number for the 64th indoor unit will be “0.” For centralized control, this setting is required.

1 2 3 4 5 6

ON

OFF 1 2 3 4 5 6

ON

OFF

DSW6 (Tens Digit)Unit No. Setting

RSW1 (Units Digit)

SettingPosition


Ex.) Set at No.16 UnitDSW6

RSW1

Set No.1 Pin at ON side

Set at "6"

34

10

89 2

567

34

10

89 2

567

Factory settings for DSW6 and RSW1 are set at "0".

For the units supporting H-LINK II, the unit numbers canbe set for a maximum of 64 indoor units (No.0 to 63).

DSW3ON

1 2 3 4

DSW4ON

1 2 3 4

RSW20987 6 543

21

RSW10987 6 543

21

DSW6ON

1 2 3 4 5 6

DSW5ON

1 2 3 4 5 6

DSW7ON

1 2

RSW1(Indoor Unit No. Setting)

RSW2(Refrigerant Cycle No. Setting)

DSW4 (Unit Model Code Setting)

DSW3 (Capacity Code Setting)

DSW5(Refrigerant Cycle No. Setting)

DSW6 (Indoor Unit No. Setting)PCB1

DSW7(Fuse Recover) ON

1 2 3

DSW8DSW8(Unit Model Code Setting)

3-8 SM-16006-rev.1

TROUBLESHOOTING

(5) Capacity Code Setting (DSW3) No setting is required because of the factory setting. This switch is utilized for setting the capacity code which corresponds to the capacity of the indoor unit.

DSW3Setting Position

96Indoor Unit Capacity

(MBH)

1 2 3 4

ON

OFF

(6) Refrigerant Cycle Number Settings (RSW2 and DSW5) Setting is required. Factory settings are all OFF.

34

10

89 2

567

34

10

89 2

567

1 2 3 4 5 6

ON

OFF 1 2 3 4 5 6

ON

OFF

DSW5 (Tens Digit)Refrigerant Cycle Number Setting

RSW2 (Units Digit)

SettingPosition


Ex.) Set at No.5 CycleDSW5

RSW2

Set All Pins OFF

Set at "5"

Factory settings for DSW5 and RSW2 are set at "0".

For the units supporting H-LINK II, the refrigerant cyclenumbers can be set for a maximum of 64 cycles.(No. 0 to 63)

1 2 3 4

ON

OFF

(7) Unit Model Code Setting (DSW4) No setting is required. It is for setting the model code of the indoor unit.

(8) Fuse Recover (DSW7)

* Factory Setting

* When applying high voltage to terminals 1 and 2 of TB2, the 0.5A fuse on the PCB is cut. In such a case, first reconnect the wirings correctly to TB2, and then set the No.1 pin to ON.

1 2

ON

OFF

1 2

ON

OFF

(9) Control Mode Setting (DSW8) If the control mode type is "Outlet Air Temperature Control", this setting is required depending on the setting method of control mode.

All are OFF.

Indoor Temperature Control(Factory Setting) Outlet Air Temperature Control

1 2 3

ONOFF

No.3 is ON.

1 2 3

ONOFF

SM-16006-rev.1 3-9

TROUBLESHOOTING

3.1.4 Checking Wired Controller

(1) Check 1 and Check 2

Check Menu Item FunctionCheck 1 Sensor condition of air conditioner will be monitored and indicated. Check 2 Sensor data of air conditioner prior to alarm occurrence will be indicated.Alarm History Display Previous alarm record (date, time, alarm code) will be indicated. Model Display Model name and manufacturing number will be indicated. I.U./O.U. PCB Check The result of PCB check will be indicated.Self Checking Checking of wired controller will be carried out.

Check Menu

Function 5Model DisplayAlarm History DisplayCheck 2 01

/02

Check 1

EntrSel. OK RtrnBack

l Setting Method

OK

Menu

Back/Help ECOOn/Off

A/C

MODE SPEED TEMP

COOL

LOUV. Adj.

Meeting RoomLOUV.

FLTR

Motion Sensor ON

Avoid

Press and hold “Menu” and “ECO” simultaneously for three seconds during the normal mode.

< Normal Mode Display > < Check Menu Display >

(1) Press and hold “Menu” and “ECO” simultaneously for three seconds during the normal mode. The Check Menu is displayed.

Check Menu


/02

Check 1

EntrSel. OK RtrnBack

(2) Select “Check 1” (or “Check 2”) from the Check Menu and press “OK”.

(3) Select the Set Indoor Unit by pressing “ ” and press “OK”. This screen is NOT displayed when there is only one indoor unit connected with the wired controller. In this case, (4) below will be displayed.

Check 101-01 02-01 03-01 04-01

04-0204-0304-04

03-0203-0303-04

01-02 02-0202-0302-04

01-0301-04

Sel. OK Entr RtrnBack

(4) Press “ “ or “ “ to change the screen.Check 1:01-03

01/

07

Next Page

b5 25b4 20b3 55b2 20

Item Valueb1 22

RtrnBack

Wired Controller Model: CIW01Each “Check Menu” item and its function are explained in the following table.

3-10 SM-16006-rev.1

TROUBLESHOOTING

No. Item Data Name No. Item Data Name1 b1 Set Temp. 22 H2 Suction Pressure2 b2 Inlet Air Temp. 23 H3 Control Information3 b3 Discharge Air Temp. 24 H4 Operating Frequency4 b4 Liquid Pipe Temp. 25 J1 I.U. Capacity5 b5 Remote Thermistor Temp. 26 J2 O.U. Code6 b6 Outdoor Air Temp. 27 J3 System Number (1)7 b7 Gas Pipe Temp. 28 J4 System Number (2)8 b8 Evaporating Temp. at Heating 29 L1 I.U. Electronic Expansion Valve9 b9 Condensing Temp. at Cooling 30 L2 O.U. Electronic Expansion Valve 110 bA Comp. Top Temp. 31 L3 O.U. Electronic Expansion Valve 211 bb Thermo Temp. of Wired Controller 32 L4 O.U. Electronic Expansion Valve B12 bC Not Prepared 33 P1 Comp. Current13 C1 I.U. Micro-Computer 34 P2 Comp. Operating Accumulated Time14 C2 O.U. Micro-Computer 35 q1 Motion Sensor Reaction Rate *1

15 d1 Stopping Cause State Indication 36 q2 Radiation Sensor Temp. *1

16 E1 Times of Abnormality 37 q3 Motion Sensor 1 Reaction Rate *1

17 E2 Times of Power Failure 38 q4 Motion Sensor 2 Reaction Rate *1

18 E3 Times of Abnormal Transmitting 39 q5 Motion Sensor 3 Reaction Rate *1

19 E4 Times of Inverter Tripping 40 q6 Motion Sensor 4 Reaction Rate *1

20 F1 Louver Sensor State 41 q7 Setting Temp. Collected Value21 H1 Discharge Pressure

Features of Check Mode 1

No. Item Data Name No. Item Data Name1 q1 Inlet Air Temp. 9 q9 Discharge Pressure2 q2 Discharge Air Temp. 10 qA Suction Pressure3 q3 Liquid Pipe Temp. 11 qb Control Information4 q4 Outdoor Air Temp. 12 qC Operating Frequency5 q5 Gas Pipe Temp. 13 qd I.U. Expansion Valve6 q6 Evaporating Temp. at Heating 14 qE O.U. Expansion Valve 17 q7 Condensing Temp. at Cooling 15 qF Comp. Current8 q8 Comp. Top Temp.

Features of Check Mode 2

*1 The average value for 30 seconds (update cycle time of Check Mode) is displayed on the LCD.

SM-16006-rev.1 3-11

TROUBLESHOOTING

(1) Press and hold “Menu” and “ECO” simultaneously for 3 seconds during the normal mode. The Check Menu is displayed.

Check Menu


/02

Check 1

EntrSel. RtrnBackOK

(2) Select “Alarm History Display” from Check Menu and press “OK”.

(3) The Alarm History Display changes by pressing “ “ or “ “. Alarm History

01/

03

Next Page Delete RtrnBack

2008/10/28 PM02:10 01-01 222008/10/29 PM03:45 01-03 112008/11/06 AM11:37 01-02 142008/11/07 PM07:15 01-03 132008/11/07 PM11:55 01-01 29

Date Time I.U. ERR

OK

(4) To delete the alarm history, press “OK”. The confirmation screen will be displayed. Select “Yes” and press “OK”. The alarm history is deleted and the screen will return to (3) above. If “No” is pressed, the screen will return to (3) above.

OK

Delete alarm history?

Alarm History

Yes No

Sel. Entr RtrnBack

(2) Alarm History Display The Alarm History Display is accessed from the Check Menu.

3-12 SM-16006-rev.1

TROUBLESHOOTING

(1) Press and hold “Menu” and “ECO” simultaneously for three seconds during the normal mode. Check Menu is displayed.

Check Menu

Self Checking 02/

02

I. U./O. U. PCB Check

EntrSel. RtrnBackOK

(2) Select “I.U./O.U. PCB Check” from the Check Menu and press “OK”.

(3) Select the indoor unit to be set by pressing “ ” and press “OK”. This screen is NOT displayed when there is only one indoor unit connected with the wired controller. In this case, (4) below will be displayed.

I.U./O.U. PCB Check01-01 02-01 03-01 04-01

04-0204-0304-04

03-0203-0303-04

01-02 02-0202-0302-04

01-0301-04

Sel. OK Entr RtrnBack

(4) The indoor unit PCB and the outdoor unit PCB checks are started.* If “Menu“ is pressed during the check, the

check is canceled and the screen will return to (2).

* If “Back/Help” is pressed during the check, the check is canceled and the screen will return to (3) above.

Check 1: CheckingCheck 2: CheckingCheck 3: Checking

I.U./O.U. PCB: Check 01-01

(5) After completing the check, the results of the PCB check will be indicated. Press “Back/Help” and return to (3) above.

Check 1: 00Check 2: 00Check 3: 00

I.U./O.U. PCB: Check 01-01

(3) I.U./O.U. PCB Check

Indoor Unit PCB Outdoor Unit PCB

Normal Normal

Abnormality of Inlet Air Temp. Thermistor Abnormality of Transmission of Outdoor Unit

Abnormality of Outlet Air Temp. Thermistor ITO Input Failure

Abnormality of Liquid Pipe Temp. Thermistor PSH Input Failure

Abnormality of Remote Thermistor Abnormality of Protection Signal Detection Circuit

Abnormality of Gas Pipe Temp. Thermistor Abnormality of Phase Detection

Abnormality of Transmission of Central Station Abnormality of Transmission of Inverter

Abnormality of EEPROM Abnormality of High Pressure Sensor

Zero Cross Input Failure Abnormality of Comp. Discharge Gas Temp. Thermistor

Abnormality of Transmission of I.U. during Check Abnormality of Low Pressure Sensor

Abnormality of Evaporating Temp. Thermistor at Heating

Abnormality of Ambient Air Temp. Thermistor

< Results of Check Table >

SM-16006-rev.1 3-13

TROUBLESHOOTING

03: Backlight Test04: Contrast Test05: Run Indicator Test

A

(1) Press and hold “Menu” and “ECO” simultaneously for three seconds during the normal mode (when unit is not operating). The Check Menu is displayed.

Check Menu

Self Checking 02/

02

I. U./O. U. PCB Check

EntrSel. RtrnBackOK

(2) Select “Self Checking” from the Check Menu and press “OK”.

(3) Select the process for “Self Checking”.

* To start self check, press “ECO”.

* To clear EEPROM, press “ ” and “ECO” simultaneously.

See EEPROM clear process (15) below.0 1 : 0 0 0

P-3400ARF-8Y050 2008.11.06 12:34

Self Checking

(4) LCD Test Press “OK” and the screen will change as shown at the right.

0 2 : 0 0 0

Self Checking

(5) Backlight Test LCD brightness is changed gradually by pressing “OK”.

0 3 : 0 0 0

Self Checking(6) Contrast Test Contrast of the LCD gradually changes by pressing “OK”.

(7) Run Indicator Test Press “OK” and the run indicator will flash in red and green twice for each.

(8) Button Input Test Press the nine buttons one-by-one. The number indicated with “ A ” will count up as buttons are being pressed.* The order of pressing buttons is random.

Do not press more than one button at a time. It will not be counted.

0 6 : 0 0 0

Self Checking

(4) Self-Checking Self-Checking checks the wired controller and clears EEPROM (storage cell inside of the wired

controller).

3-14 SM-16006-rev.1

TROUBLESHOOTING

07: No Function08: Transmission Test

A

A

EEPROM Process

(9) No Function This function is not used. Press “OK” to proceed.

0 7 : 0 0 0

Self Checking

(10) Communication (Transmission) Circuit Test The wired controller automatically starts to check the communication circuit.

(11) Wired Controller Thermistor Test The detected temperature by the wired controller thermistor is displayed at “ A ” in the figure at the right.

0 9 : 0 2 5

Self Checking

(12) Date/Time Test The date and time is changed from “2012.03.04 12:34” to “2008. 01. 01 00:00”.

1 0 : 0 0 0

2008.01.01 00:00

Self Checking

(13) EEPROM Test < EEPROM Clearing Cancel > Press “?“ (help). < EEPROM Clear > Press “OK” or wait 15 seconds. EEPROM data will be cleared. During the process, the numbers will indicate the location with “ A ”. If A has a value of “999”, EEPROM is in a faulty condition.

*If “ A ” has “999”, the process does not proceed to the next step.

11 : 0 0 0

Self Checking

(14) Clear EEPROM The wired controller will automatically start the EEPROM clearing process.

1 3 : 0 0 0

Self Checking

(15) After several seconds pass, the self checking is completed and the wired controller is automatically restarted.

SM-16006-rev.1 3-15

TROUBLESHOOTING

(5) Contact Information Registration Contact information can be registered from “Contact Information”.

(1) Press and hold “Menu” and “Back/Help” simultaneously for at least three seconds during the normal mode (when unit is not operating). The Test Run Menu will be displayed.

(2) Select “Contact Information” from the Test Run Menu and press “OK”. Contact Information 1 will be displayed.

(3) Press “Back/Help” to change font types. Contact Information 1

OKECO

'1q€<

+2wa>

*3esz

;4rdx

.5tfc

?6ygv

← →

-7uhb

/8i

:9okm

jn

l,

=0p

ABCabc

Sym.1Sym.2

Spce Del. Fin.Entr Fin.Sel. Letter

pElectric Cor

Menu

(4) Press “ ” to select letters.

(5) Press “OK” to confirm the letters. (Max.: 28 letters)

(6) Select “Fin.” and press “OK” (or simply press “Menu”), (7) will be displayed.

(7) Repeat (3) through (5) to register contact information and continue. Select “Fin.” and press “OK”, the confirmation screen will be displayed. (Also, press “Menu” and the confirmation screen will be displayed.)

(8) Select “Yes” and press “OK”. The Test Run Menu will be displayed after the setting is confirmed. If “No” is pressed, the screen will return to (3) above.

OK

Register these contents?Yes No

Electric Corp.Contact Information

Sel. Entr RtrnBack

3.1.5 Checking Using 7-Segment Display


3.1.6 Checking Alarm Code History


3.1.7 Emergency Operation


3-16 SM-16006-rev.1

TROUBLESHOOTING

3.2.1 Alarm Code Table

3.2 Troubleshooting Procedures

l Alarm Code Indication of Wired Controller

Sel. OP MODE

IDU : TIC4036B21SMODEL : F .08

Alarm Code: 23

ODU : TVAHR120B31S

01-02

AlarmRst

Address

EntrOK

(1) (2)

(3)

(5)

(4)

(6)

(7)

< CIW01 >

(1) Refrigerant Cycle No. (*1)(2) Indoor Unit No. (*1)(3) Alarm Code(4) Unit Model Code(5) Total Number of Indoor Units in the Same System

as the Indoor Unit Having Trouble(6) Indoor Unit Model (*2) (*3)(7) Outdoor Unit Model (*2) (*3)

(*1): If two or more indoor units having trouble are connected to the wired controller, the indicated indoor unit is selectable.

(*2): The initial of model names are indicated as “T”. These “T” shall be replaced with “H” or “Y”. (Except for the wall mount model.) When there is a combination of outdoor units, ODU indication is the model of the main outdoor unit (Unit A).

(*3): The model names are not indicated depending on the unit type.

Code Category Content of Abnormality Leading Cause

01 Indoor Unit Activation of Protection Device (Float Switch)

Activation of Float Switch (High Water Level inCondensation Drainage Pan, Problem with Drain Piping,Float Switch, or Condensation Drainage Pan)

03 Communication Abnormal Communication between Indoor and Outdoor Units

Incorrect Wiring, Loose Terminals, Disconnect Wire,Blowout of Fuse, Outdoor Unit Power OFF

11

Sensor onIndoor Unit

Abnormal of Inlet Air Thermistor

Incorrect Wiring, Disconnecting WiringBreaking Wire, Short Circuit

12 Abnormal of Outlet Air Thermistor

13 Abnormal of Freeze Protection Thermistor

14 Abnormal of Gas Piping Thermistor

16 Abnormal of Remote Thermistor (DOAS)

17 Abnormal of Thermistor for Controller (DOAS)

19 Fan Motor Activation of Protection Device for Indoor Fan Motor Fan Motor Overheat, Lockup

31

System

Incorrect Capacity Setting of Outdoor Unit and Indoor Unit

Incorrect Capacity Code Setting of CombinationExcessive or Insufficient Indoor Unit TotalCapacity Code

35 Incorrect Setting of Indoor Unit No. Duplication of Indoor Unit No. in same Refrigerant Group

36 Incorrect Indoor Unit Combination Indoor Unit is Designed for R22

b0 Incorrect Setting of Unit Model Code

Unit model code setting is not set or is set for the incorrect indoor unit type.

b1 Incorrect Setting of Unit and Refrigerant Cycle Number

There are 64 or More Number is Set for Address orRefrigerant Cycle.

SM-16006-rev.1 3-17

TROUBLESHOOTING

3.2.2 Troubleshooting Using Alarm Codes

AlarmCode Activation of Protection Device (Float Switch) in Indoor Unit

l The RUN indicator (red) flashes. l The indoor unit number (refrigerant cycle number - address number), the alarm code, the model code*1),

the model name*1) and the number of connected indoor units are displayed on the LCD. The indoor unit number and the alarm code are displayed on the 7-segment display of the outdoor unit PCB. *1) Except for some models.

H This alarm code is displayed when the contact between #1 and #2 of CN14 on the I.U. PCB is opened for over 120 seconds during the cooling, dry, fan, or heating operation.

I.U. PCB: Indoor Unit PCB

*2): Connector for Drain Pump

Indoor Unit Type A Connector for Drain Pump

DOAS PCN6 on PCB1

Turn OFF power supply and remove connectors A *2 and CN14 on I.U. PCB.Then turn ON power supply. Is DC12.5~ 13.5V applied between A *2 terminals?

Turn OFF power supply and connectconnector CN14 on I.U. PCB. Then turn ON power supply. Is voltage applied between A *2 terminals less than 12.5V?

Failure of I.U. PCB

Failure of Condensate Pump

Activation of Float Switch FSor Failure of Float Switch.

Yes Make sure short circuit does not occur between A *2 terminalswhen measuring the voltage. Short circuit will lead to I.U. PCBmalfunction.

Yes

No

No

Failure of Drain Pump

Indication on Outdoor Unit PCB

Unit No. of Malfunctioning Indoor Unit

Alarm Code

3-18 SM-16006-rev.1

TROUBLESHOOTING

*1): Refer to Section 3.1.4 (3) above for details.

Cause Check Item Action(Turn OFF Main Switch)Event

Activation ofFloat Switch

Failure of Float Switch

Failure of CondensatePump

Contact Failure

Incorrect Connection

Failure

Contact Failure

Incorrect Connection

Failure

Check condensate pan.Check drainage bypouring water.

Check continuity when drain level is low.

Measure resistancewith a tester.

Measure resistancewith a tester.

Measure voltage between CN36 terminalswith a tester.

Check connection.

Check connection.

High DrainLevel

Clogging ofDrainageUp-SlopeCondensatePiping

Remove foreign particlesclogging condensatepipe.

Replace float switchif faulty.

Replace condensate pump if faulty.

Replace and tighten connector.

Replace and tightenconnector.

Repair connection.

Repair connection.

Check PCB inSelf-Checking Mode *1). Replace it if faulty.Failure of Indoor Unit PCB

Failure of Drain Pump

Drain Piping

drain pan.clogging drain pipe.

Replace drain pump if faulty.

Measure voltage between CN36/PCN6 terminals with a tester.

SM-16006-rev.1 3-19

TROUBLESHOOTING


the model name*1) and the number of connected indoor units are displayed on the LCD, and the indoor unit number and the alarm code are displayed on the 7-segment display of the outdoor unit PCB. *1) Except for some models.

H When fuses are blown, or the circuit breakers are activated, check the cause of overcurrent and take necessary action.

H This alarm code is displayed when an abnormal condition continues for three minutes after normal communication between indoor units and outdoor units. The abnormal condition continues for 30 seconds even after the micro-computer is automatically reset. If communication failure occurs from the beginning, the alarm code is displayed after 30 seconds from start up.

Is LED3 (yellow)on O.U. PCB ON?

No

No

Yes

Yes Yes

Is DSW10-1P(Terminating Resistance)

on O.U. PCB ON?

Is LED1 (red)on O.U. PCB ON?

Set it correctly.No

Disconnect connectorCN2 on O.U. PCB. *1)

Yes

Reconnect connectorCN2 on O.U. PCB.

Replace fuse.

No Check the fuses ofoutdoor unit powersupply.

Faulty O.U. PCB

OutdoorUnit

To Next Page

No

No

Is the fuse forO.U. PCB blown?

YesYes

Is the voltage betweenfaston terminal "R1"and “S1”of O.U. PCB

correct*2?

Is DSW10-1P(Terminating Resistance)

on O.U. PCB ON?

Is PCN and CN1 onO.U. PCB loose? Connect them correctly.

Yes

No

Power Supply Faston Terminal Voltage

208-230V/60Hz 208-230V460V/60Hz 220V

*2): Correct Voltage

AlarmCode Abnormal Communication between Indoor Units and Outdoor Units

3-20 SM-16006-rev.1

TROUBLESHOOTING

O.U. PCB: Outdoor Unit PCBI.U. PCB: Indoor Unit PCB

( )

Is LED3 (yellow)on I.U. PCB ON?

Is LED3 (yellow) onI.U. PCB flashing morethan once in 10 seconds.

Yes

Faulty O.U. PCB.

Set it correctly.

Faulty I.U. PCB.

Faulty I.U. PCB.

Check wiring betweenoutdoor unit and indoorunits or fuse (EF) forI.U./O.U. PCB.

No

Yes

No

Does Alarm occur withall indoor units?

Yes

No

Check other indoor units.

NoNo

Is LED3 (yellow)ON even if connector

CN2 on I.U. PCBis removed?

YesYes

IndoorUnitDoes refrigerant system

No. setting betweenO.U. and I.U correspond?O.U.: DSW4 and RSW1I.U.: DSW5 and RSW2

SM-16006-rev.1 3-21

TROUBLESHOOTING


Correctly connect wires.

Check continuityand looseness ofconnection screws.

Check terminal Nos.

Incorrect Wiring

Disconnected WireContact Failure

Incorrect Wiring

Replace or repair wires, or tighten screws.


Blown Fuse forPower Sourceor Activation ofBreaker(Outdoor Unit and CH Box)

Check for breakageof insulation.Short Circuit between Wires

Measure insulationresistance.Short Circuit to Ground

Measure voltage withtester. Supply power.Power Failure or No Power Supply

Measure resistancebetween wires andinsulation resistance.

Faulty Comp. Motor


Replace outdoor unitfan motor and fuse.Replace O.U. PCBif faulty.

Faulty Outdoor UnitFan Motor

Blown Fuseon PCB(Outdoor Unit)

Check for breakageof wire insulation.

Remove cause ofshort circuit andreplace fuse.

Short Circuit between Wires

Measure insulationresistance.

Remove cause ofshort circuit andreplace fuse.

Short Circuit to Ground

DisconnectedWires,Contact Failure orIncorrectConnection

Check continuity of wires.Check for loosenessof connection screws.Check terminal Nos.

Replace and repair wires, tighten screws or correct wires.

Between Outdoor Unitand Indoor Unit

Power Source Wiringfor Outdoor Unit

Measure resistanceof coil.

Replace magneticswitch (CMC) and fuse.

Faulty Solenoid Coil forMagnetic Switch (CMC)for Comp. Motor


Replace fan motorand fuse.

Faulty Outdoor UnitFan Motor


Replace it if faulty.

PCB Failure(Outdoor Unit, Indoor Unit)

Check connection.Disconnected Wires toI.U./O.U. PCB

Faulty I.U./O.U.PCB

Remove cause ofshort circuit.Replace fuse and/or I.U./O.U. PCB if faulty.

Remove cause ofshort circuit to ground.Replace fuse and/orI.U./O.U. PCB if faulty.

Replace comp. andfuse. (O.U.) Replaceinverter PCB and/orPCB if faulty. (O.U.)


Measure O.U. PCBoutput. *3) Replace O.U. PCB.Incorrect Power Supply Circuit of O.U. PCB

(Outdoor Unit)

*2)

3-22 SM-16006-rev.1

TROUBLESHOOTING

*1): If the end terminal resistance (DSW10) is set to OFF for H-LINK connection, set the end terminal resistance to ON when CN2 is disconnected. Set the end terminal resistance to OFF when CN2 is reconnected.

*2): 12VDC between VCC12 and GND2 5VDC between VCC05 and GND1 12VDC between VCC12 and GND1 15VDC between VCC15 and GND1 24VDC between VCC24 and GND1 12VDC between VCC12T and GND1

SM-16006-rev.1 3-23

TROUBLESHOOTING

AlarmCode

Abnormality of Thermistor for Indoor Unit Inlet Air Temperature (Inlet Air Thermistor)

NOTE:This figure is applicable to the following thermistors.1. Inlet Air Thermistor (THM1), 2. Liquid Pipe Thermistor (Freeze Protection) (THM3), 3. Gas Pipe Thermistor (THM5), 4. Outlet Air Thermistor (THM2), 5. Outside Air Thermistor or Remote Thermistor (THM4)



H This alarm code is displayed when a short circuit (0.24kΩ or less) or disconnection (840kΩ or more) of the thermistor is detected during a heating or cooling operation. The operation automatically restarts when the malfunction is removed.

Yes

Yes

Connect them.No

Failure of Thermistor

Failure of I.U. PCB

No

Is thermistor THM1(for inlet air temp.)connected to THM1of I.U. PCB?

Is resistance of THM1between 0.24kΩ and840kΩ?


Failure ofInlet AirThermistor

Check resistance. Replace thermistorif faulty.Failure

Check connection. Correctly connect wires.Incorrect Connection

Replace I.U. PCBand check operation.

Replace I.U. PCBif faulty.Failure of I.U. PCB

0

10

20

30

40

50

60

70

80

(-15) (-10) (-5) (0) (5) (10) (15) (20) (25) (30) (35) (40) (45) (50) (55) (60)

82

61

46

35

2720.5

1612.5

10 8 5.3 3.6 2.5

90

ThermistorResistance

(kΩ)

5 14 23 32 41 50 59 68 77 86 95 104 113 122 131 140

Ambient Temperature (oF(oC))

Indication on Outdoor Unit PCB(Alarm Code 11 ~ 19)

Unit No. ofMalfunctioning Indoor Unit

Alarm Code(11 ~ 19)

3-24 SM-16006-rev.1

TROUBLESHOOTING

AlarmCode

Abnormality of Thermistor for Indoor Unit Outlet Air Temperature(Outlet Air Thermistor)




Yes

Connect them.No

Refer to "Alarm Code 11"for thermistor resistance.

Failure of I.U. PCB

Is thermistor THM2 (for outlet air temp.) connectedto THM2 of I.U. PCB?

Yes


NoIs resistance of THM2between 0.24kΩ and840kΩ?


Failure ofOutlet AirThermistor


Check wiring toI.U. PCB. Correctly connect wires.Incorrect Connection



SM-16006-rev.1 3-25

TROUBLESHOOTING

AlarmCode

Abnormality of Thermistor for Liquid Refrigerant Pipe Temperature at Indoor Unit Heat Exchanger (Freeze Protection Thermistor)




Yes

Connect them.No


Is thermistor THM3(for freeze protection)connected to THM3 ofI.U. PCB?

Yes


Failure of I.U. PCB



Failure ofFreeze ProtectionThermistor





3-26 SM-16006-rev.1

TROUBLESHOOTING

AlarmCode

Abnormality of Thermistor for Gas Refrigerant Pipe Temperature at Indoor Unit Heat Exchanger (Gas Pipe Thermistor)





Yes

Yes

Connect them.No

Failure ofThermistor

Failure of I.U. PCB

No

Is thermistor THM5(for gas pipe) connectedto THM5 of I.U. PCB?

Is resistance of THM5between 0.24kΩ and840kΩ?


Failure ofThermistorfor Indoor UnitHeat ExchangerGas Pipe Temp.





*1): The heating operation is available only during the test run.

SM-16006-rev.1 3-27

TROUBLESHOOTING

AlarmCode

Abnormality of Remote Thermistor (for DOAS Unit)

l The RUN indicator (red) flashes. l The indoor unit number and the alarm code are displayed on the LCD. The alarm code is displayed on

the 7-segment display of the outdoor unit PCB.

H This alarm code is displayed when a short circuit (0.24kΩ or less) or disconnection (840kΩ or more) of the thermistor is detected during a heating, cooling or fan operation.

Yes

Connect them.No


Failure of I.U. PCB

Is thermistor THM4connected to THM4 ofI.U. PCB?

Remote Thermistor

Set “Thermistor for Controller” settingat Function Setting by Controller.

Thermistor for ControllerIs I.U. air temperature detected byRemote Thermistor (THM4) or Thermistor for Controller?

Yes




Failure ofOutlet AirThermistor





Failure of RemoteThermistor

Replace remotethermistor if faulty.

3-28 SM-16006-rev.1

TROUBLESHOOTING

l The RUN indicator (red) flashes. l The indoor unit number and the alarm code are displayed on the LCD. The alarm code is displayed on

the 7-segment display of the outdoor unit PCB.

H This alarm code is displayed when a short circuit (0.24kΩ or less) or disconnection (840kΩ or more) of the thermistor is detected during a heating or cooling operation.

NOTE:The DOAS is able to operate while utilizing the Remote Thermistor and the Controller Thermistor under certain mode. While operating in this mode: if one of the thermistors fail, operation can be continued by using the value measured from the

only thermistor working, if both of thermistors fail, this alarm code is displayed.

This alarm code will only appear when both thermistors are being used and both have failed.For checking follow the previous page “Alarm Code 16”.


Failure of I.U. PCB

Yes

Failure of Thermistor for ControllerNo

Is resistance of Thermistor for Controllerbetween 0.24kΩ and 840kΩ?


Failure ofThermistor forController

Check short-circuit anddisconnection wiring.

Replace controllerif faulty.Failure



AlarmCode

Abnormality of Thermistor for Controller(for DOAS Unit)

SM-16006-rev.1 3-29

TROUBLESHOOTING

AlarmCode

Activation of Protection Device for Indoor Fan Motor( Indoor Unit with AC Motor )


Activationof InternalThermostat forIndoor UnitFan Motor Measure resistance

with a tester.

Check continuity afterfan motor temperaturedecreases to room temp.

FaultyInternalThermostat

Failure Replace fan motor ifno continuity.

Correct by tightening.Replace connectors.

ContactFailure

Check connection. Repair connection.IncorrectConnection

Measure coilresistance andinsulation resistance.

Replace motor if faulty.Faulty Indoor UnitFan Motor

Yes

Yes

Yes

Yes

Replace motor.No No No

Repair wiring andconnection.

No

Replace motor.

No

Yes

Does indoor fan run? Is fan motor hot?

Is there continuity at the internal thermostat

of indoor fan motor?

Is connection bad at connector?

Is coil resistanceof fan motor normal?

Check indoor temperature.If it is unusual, take suitableaction to reduce it.

l The RUN indicator (red) flashes. l The indoor unit number (refrigerant cycle number - address number ), the alarm code, the model

code*1), the model name*1) and the number of connected indoor units are displayed on the LCD. The indoor unit number and the alarm code are displayed on the 7-segment display of the outdoor unit PCB. *1) Except for some models.

H This alarm code is displayed when over approximately 1A is applied to the indoor unit fan motor.

3-30 SM-16006-rev.1

TROUBLESHOOTING

Are #1-#6 of DSW2 onO.U. PCB set incorrectly?

Are the settings ofDSW1 and RSW1 onO.U. PCB and setting

of DSW5 and RSW2 onI.U. PCB totally same in

a refrigerant cycle?

Total indoor unit capacityis wrong.

Set capacity of O.U. PCB.

No

Yes

Yes

Yes

Are #1-#4 of DSW3 onI.U. PCB set incorrectly? Set capacity of I.U. PCB.

No

Set them correctly.No

Outdoor Unit PCB: DSW1, RSW1Indoor Unit PCB: DSW5, RSW2



H This alarm code is indicated when the capacity setting DIP switch, DSW2, on the outdoor unit PCB, is not set (all the settings from #1 to #6 are OFF) or set incorrectly.

H This alarm code is displayed when the total indoor unit capacity exceed the connectable indoor unit capacity ratio of outdoor unit.


Check combination ofindoor units and capacitysetting of I.U. PCB.

Correctly set DIP switch,DSW3.

Incorrect Capacity Setting of Indoor Unit

Check outdoor unitmodel by calculatingtotal indoor unitscapacity.

Ensure that totalindoor unit capacity isfrom 50% to 130%.

Total Indoor Unit Capacity Connected to Outdoor Unit is Beyond Permissible Range

Check refrigerant cyclesetting of O.U. PCBand I.U. PCB.

Set them correctly.Refrigerant Cycle Setting of Outdoor Unitand Indoor Unit is Different

Check capacity settingof O.U. PCB.

Correctly set DIP switch,DSW2.Incorrect Capacity Setting of Outdoor Unit

DSW and RSW factory setting is 0. Maximum in setting refrigerant cycle No. is 63.

Setting Switch10 digit

321 4ON

5 6OFF

1 digit

0

7

9

5

8

6 43

1 2

Setting Position


Outdoor Unit DSW1 RSW1Indoor Unit DSW5 RSW2

Example of Setting Refrigerant Cycle No.250

7

9

5

8

6 43

1 2

321 4ON

5 6OFF

Turn ON No. 2 pin. Set Dial No.5.


Refrigerant Cycle No. Setting

AlarmCode Incorrect Capacity Setting of Indoor Unit and Outdoor Unit

SM-16006-rev.1 3-31

TROUBLESHOOTING



H This alarm code is displayed five minutes after power-on of the outdoor unit, if the indoor unit number set by DSW6 and RSW1 duplicates in the same refrigerant group.



AlarmCode Incorrect Indoor Unit No. Setting

AlarmCode Incorrect Indoor Unit Combination

3-32 SM-16006-rev.1

TROUBLESHOOTING

AlarmCode Incorrect Setting of Unit Model Code



H This alarm code is displayed in the following condition. Check the unit model code setting (DSW4) of I.U. PCB after turning OFF the power source.

Condition ActionThe unit model code setting (DSW4) is not set (all pins are “OFF”), or is set for the incorrect indoor unit type. Set DSW4 correctly.

AlarmCode Incorrect Setting of Unit and Refrigerant Cycle Number



H This alarm code is displayed in the following condition. Check the settings of the DIP switch (DSW) and the rotary switch (RSW) after turning OFF the power source.

Condition Action

The unit No. setting (DSW6 and RSW1) or the refrigerant cycle No. setting (DSW5 and RSW2) is set as “64” or more, or more than 2 pins of DSW5 or DSW6 are set.

a) Unit No. Setting / Ref. Cycle No. Setting Starting from “1” (recommended) Set the unit No. and the refrigerant cycle No. from “1” to “63”. (Setting No. for the 64th unit shall be “0”.)

b) Unit No. Setting / Ref. Cycle No. Setting Starting from “0” Set the unit No. and the refrigerant cycle No. from “0” to “63.” (Setting No. for the 64th unit shall be “63”.)

SM-16006-rev.1 3-33

TROUBLESHOOTING

If there is no abnormality (Alarm Code) indicated on the wired controller, and normal operation is not available, take necessary action according to the following procedures.

OtherAbnormalities Abnormalities of Devices

3.2.3 Abnormalities of Devices

*1): For CIW01, refer to Section 3.1.4 (3).*2): For CIW01, refer to Section 3.1.4 (2).*3): Even if controllers are normal, the compressor does not operate under the following conditions.

* Indoor Air Temp. is lower than 69.8°F (21°C) or Outdoor Air Temp. is lower than 23°F (-5°C) during cooling operation.

* Indoor Air Temp. is higher than 86°F (30°C) or Outdoor Air Temp. is higher than 73.4°F (23°C) during heating operation.

* When a cooling (or heating) operation signal is given to the outdoor unit and a different operation signal is given to indoor units.

* When demand signal or emergency stop signal is given to outdoor unit.


Measure coilresistance with tester.

Replace indoor unitfan motor.

Failure ofIndoor UnitFan Motor

DisconnectedCoil

"RUN" Indicatorand LCD are ON.However, thesystem doesnot operate.

(example) Indoor/outdoor fans or compressor do not operate.

The Comp.does not Stopor Start evenif the temperaturesetpointon the LCD isChanged *3)


Burned-OutCoil

Measure coilresistance with tester.

Replace outdoor unitfan motor.

Failure ofOutdoor UnitFan Motor

DisconnectedCoil


Burned-OutCoil

Check connection.Failure ofOne of PCBs

DisconnectedWire to PCB

Check PCB inself-checking mode *1).

Correctly connectwires.

Replace PCB if faulty.

Check it inself-checking mode *1).

Check it inCheck Mode *2).

Failure ofPCB

Replace or correctlyconnect wires if abnormal.

Failure ofAir InletThermistor


Disconnectionof Thermistor

Check whether magneticswitch is activatedcorrectly.

Replace magneticswitch.


Failure ofMagneticSwitch forComp.

ContactFailure

Measure resistancebetween wires.

Replace compressor.

Failure of Comp. Motor

Check for abnormalsound from comp.Failure of Comp.

Abnormality of Wired Zone Controller Cord Check it in Run Test.

Failure of Indoor Unit PCB

foroutdoor unit,indoor unit,wired zonecontroller

Check it in Test Run.Abnormality of Wired Controller Cable

3-34 SM-16006-rev.1

TROUBLESHOOTING

*1): For CIW01, refer to Section 3.1.4 (3).*2): For CIW01, refer to Section 3.1.4 (2).*3): Even if controllers are normal, the compressor does not operate under the following conditions.

* Indoor Air Temp. is lower than 69.8°F (21°C) or Outdoor Air Temp. is lower than 23°F (-5°C) during cooling operation.

* Indoor Air Temp. is higher than 86°F (30°C) or Outdoor Air Temp. is higher than 73.4°F (23°C) during heating operation.

* When a cooling (or heating) operation signal is given to the outdoor unit and a different operation signal is given to indoor units.

* When demand signal or emergency stop signal is given to outdoor unit.

Abnormalities of DevicesOtherAbnormalities

Incorrect OptionalSetting

The Comp.does not stopor start evenif the temperaturesetpoint on theLCD ischanged. *3)

Check Setting Conditionof "Thermistor ofWired Zone Controller"with Optional Setting* Setting and Control"00": Control by Indoor Thermistor for Suction Air"01": Control by Thermistor of Wired Zone Controller"02": Control by Average Value of Indoor Thermistor for Suction Air and Thermistor of Wired Zone Controller

If the thermistor of wired zone controller is not used, set it at "00".

IncorrectInput/Output Setting

Check Setting Conditionof "i1" and "i2" byInput/Output Setting* Setting and Control"01": Room Thermostat (Cooling)"02": Room Thermostat (Heating)

If the roomthermostat is notused, set for inputsignal actually used.If no signal is used,set it at "00".


Wired

Wired

wired controller

Check Setting Condition of "Thermistor of Wired Controller" with Optional Setting* Setting and Control"00": Control by Indoor Thermistor for Suction Air"01": Control by Thermistor of Wired Controller"02": Control by Average Value of Indoor Thermistor for Suction Air and Thermistor of Wired Controller

SM-16006-rev.1 3-35

TROUBLESHOOTING

*1): For CIW01, refer to Section 3.1.4 (3). *2): Refer to Section 3.1.4 (2).



Check thermistor inself-checking mode *2).

Replace or correctlyconnect wires if abnormal.



Failure ofDischargeAir Temp.Thermistor


Indoor FanSpeed isNot Changed

No DefrostingOperation Modeis Availablewhile HeatingOperation orDefrostingOperation isContinued

Light andLCD Indicationon Wired ZoneControllerare Kept ON

DisconnectedWire ofThermistor

Failure ofThermistorfor OutdoorEvaporatingTemp. duringHeating


Replace or correctly connect it if abnormal.

Replace wired controller if faulty.


DisconnectedWire ofThermistor

Measure resistanceof coil.

Failure ofReversingValve

DisconnectedReversingValve Coil

Supply power forcibly.

Replace reversing valve.IncorrectActivation ofReversingValve

Check connectors.Failure ofOutdoor UnitPCB



Replace it when checkmode is not available.

Failure ofPCB

Check PCB inself-checking mode *1).

Check connectors.Failure ofIndoor UnitPCB




Failure ofPCB

Failure of Wired Zone Controller

Failure ofIndoor Unit PCB

Check connectors. Correctly connectwires.

Disconnected Control Wiresbetween Indoor Unit andOutdoor Unit

Failure of PCB in Indoor Unitor Wired Zone Controller

Check Thermistor in Self-Checking mode *2).

Check it in Self-Checking mode *1).

Check PCB in Self-Checking mode *1).

Failure of PCB in Indoor Unit or Wired Controller

Failure of Wired Controller

Check it in Self-Checking mode *1).

3-36 SM-16006-rev.1

TROUBLESHOOTING


Measure superheat.Correctly chargerefrigerant afterrepairing gas leakage.

Measure and checkfield-supplied pipes. Use correct pipes.

ExcessivelyLow SuctionPressure

Gas Leakageor Shortageof Refrigerant

InsufficientCoolingOperation

ExcessivelySmallDiameterTube orLong Piping

Check whether or nottemp. difference existsbefore/after check valve.

Replace check valvefor outdoor unit.

IncorrectActivation ofCheck Valveof OutdoorUnit

Check temp. difference. Remove clogging.Clogging atLow PressurePiping

InsufficientAirflow toIndoor UnitHeatExchanger

Check temp. differenceat inlet and outlet ofstrainer.

Replace strainer inindoor unit.

CloggedStrainer inIndoor UnitClogging atLow PressurePiping

Check for any clogging. Remove clogging.

Check connectioncord and connector. Replace connector.

Check for cloggedair filter. Clean air filter.

Check for obstacle atinlet or outlet. Remove obstacles.

ExcessivelyLow AirTemp. toIndoor UnitHeatExchanger

Insufficient revolutionof indoor unit fan motor? Replace fan motor.

Check short-circuitedindoor unit air.

Remove cause ofshort-circuited.

Is there operationsound from coil? Replace coil.

Is thermistor oncompressor normal? Replace thermistor.

Is thermistorinstalled correctly oncompressor?

Correctly install it.

Failure orMalfunctionof Electronic ExpansionValve

Calculate heat load. Use a larger unit.Indoor Heat Load is Largerthan Cooling Capacity


SM-16006-rev.1 3-37

TROUBLESHOOTING



ExcessivelyHighDischargePressure


Check expansion valve opening.

Correctly chargerefrigerant.

ExcessivelyChargedRefrigerant

ExcessivelyHigh AirTemp. toOutdoor UnitHeatExchanger

Check each temp.and pressure.

Charge refrigerantafter vacuum pumping.

Non-CondensableGas in Cycle

Check for clogging. Remove clogging.Clogging ofDischargePiping

Check clogging ofoutdoor unitheat exchanger.

Remove clogging.

Obstacles at inlet oroutlet of outdoor unitheat exchanger?

Remove obstacles.

Short-circuited outdoor unit

Remove cause ofshort-circuit.

Any other heat loadnear outdoor unit? Remove heat source.

Is service space foroutdoor unit sufficient?

Secure sufficient service space.

Correct fan speed? Replace fan motor.

InsufficientAirflow toOutdoor UnitHeatExchanger

Check for clogging. Remove clogging.

Check for connectingwire and connector. Replace connector.



Is thermistor installedcorrectly oncompressor?


Failure orMalfunctionof ExpansionValve

Check temp. differencebetween inlet andoutlet of reversing valve.

Check leakage fromsolenoid valve.

ExcessivelyLow SuctionPressure

Failure ofSolenoidValvefor Bypass

Replace solenoid valve.

Replace failed expansion valve ofindoor unit.

Replace reversing valve.

Malfunctionor InternalLeakage fromReversingValve

Check temp. differencebetween inlet and outletof reversing valve.

Replace reversing valve.Malfunction or InternalLeakage from Reversing Valve

Check for expansion valve of indoor unit in the same system.

Discharge Temp. ofIndoor Unit is Unstable.

outdoor unit air

3-38 SM-16006-rev.1

TROUBLESHOOTING


TransmissionFailurebetweenI.U. and O.U.

InsufficientPowerSupply toIndoor Unit.



TransmissionFailure

Check indoor unitindicating alarm code“03” on wired controller.

Repair it according to alarm code “03”.

Check wired controllerLCD or “RUN” indicatoris turned OFF.

Check indoor unitaccording to“Troubleshooting”of this manual.

Failure ofIndoor UnitPCB

Check that indoor unitcapacity is 0 incheck mode ofoutdoor unit PCB.

Replace indoor unit PCB.

Communication

Communication

SM-16006-rev.1 3-39

TROUBLESHOOTING



ExcessivelyLowSuctionPressure

InsufficientHeatingOperation

Measure superheat.Correctly chargerefrigerant after gasleakage check andrepair.

Gas Leakageor InsufficientRefrigerantCharge

Check temp. differenceof each part. Remove clogging.

Cloggingof SuctionPiping

Check temp. differencebetween inlet and outletof strainer.

Replace strainer foroutdoor unit or indoorunit.

Clogging ofIndoor Unit/Outdoor UnitStrainer

Check thermistor fordefrosting.

Replace thermistorfor defrosting.

Defrosting isInsufficientlyCompleted

Check for anyshort-circuitsto outdoor unit.

Remove cause ofshort circuit.

ExcessivelyLowAir Temp. toOutdoor UnitHeatExchanger

Measure field-suppliedpipes. Use specified pipes.

ExcessivelySmallDiameter orLong Piping

Is outdoor unit heatexchanger clogged? Remove clogging.

Are there any obstaclesat inlet or outlet ofoutdoor unit?

Remove obstacles.

Is service space foroutdoor unit sufficient?

Secure sufficientservice space.

Check outdoor fan speed. Replace fan motor.

InsufficientAirflow toOutdoor UnitHeatExchanger

Check for clogging. Remove clogging.

Check for connectingcord and connector. Replace connector.



Is thermistorinstalled correctlyon compressor?


Failure orMalfunctionof ElectronicExpansionValve

Calculate heat load. Use larger unit.Indoor Heat Load is Largerthan Heating Capacity

Check for any short-circuited outdoor unit air.

3-40 SM-16006-rev.1

TROUBLESHOOTING


TransmissionFailurebetweenI.U. and O.U.

InsufficientPowerSupply toIndoor Unit.



TransmissionFailure

Check indoor unitindicating alarm code“03” on wired controller.

Repair it according to alarm code “03”.

Failure ofIndoor UnitPCB

Check that indoor unitcapacity is 0 incheck mode ofoutdoor unit PCB.

Replace indoor unit PCB.

Check wired controllerLCD or “RUN” indicatoris turned OFF.

Check indoor unitaccording to“Troubleshooting”of this manual.

Communication

Communication

SM-16006-rev.1 3-41

TROUBLESHOOTING


ExcessivelyHighDischargePressure


Check whether shortcircuit exists.

Remove cause ofshort circuit.

ExcessivelyHigh AirTemp. toIndoor UnitHeatExchanger


Correctly chargerefrigerant.

ExcessivelyChargedRefrigerant

Check for clogging. Remove clogging.Clogging ofDischargePiping

Check refrigerantquantity.

Recharge refrigerantafter vacuum pumping.

Non-CondensableGas in Ref.Cycle

Check for filter clogging. Remove clogging.

Check for any obstaclesat inlet or outlet ofindoor unit.

Remove obstacles.

Check indoor fan speed. Replace fan motor.

InsufficientAirflow toIndoor UnitHeatExchanger


Check for refrigerantleakage from solenoidvalve.

ExcessivelyHigh SuctionPressure

Failure ofSolenoidValvefor Bypass

Replace solenoid valve.

Replace failedexpansion valve ofindoor unit.

Replace reversing valve.

Malfunctionor InternalLeakage fromReversingValve


Replace reversing valve.Malfunction or InternalLeakage of Reversing Valve

Check temp. differencebetween inlet and outletof check valve.

Replace check valve.Malfunction of Check Valveof Outdoor Unit

Check for expansion valve of indoor unit in same system.

Discharge Temp. ofIndoor Unit is Unstable.

Abnormalities of Devices OtherAbnormalities

3-42 SM-16006-rev.1

TROUBLESHOOTING



Cooling orHeatingOperationwithAbnormalSound

Outdoor Fandoes Not Operateeven whenCompressoris Operating

Is there any abnormalsound from Inside of compressor?

Replace compressor.Wear orBreakage ofInternalComp. Parts


Check each part istightly fixed.

AbnormalSound fromCompressor

Failure ofInstallation Tightly fix it.

Ensure superheat.Liquid Ref.Compression

Check resistance of crankcase heater or fuse.

Replace crankcaseheater or fuse.

CrankcaseHeater doesNot Get Warm

Check it by viewing. Remove foreignparticles.

Foreign Particles InsideFan Casing

Check it by viewing. Adjust position offan wheel.

Indoor Unit Fan WheelContacts Casing

Check it by viewing. Adjust position ofpropeller fan.

Outdoor Unit Propeller FanComes in Contact with Fan Shroud

Check surface ofcontacts.

Replace magneticswitch.

Humming Sound fromMagnetic Contactor

Check each fixingscrews. Tightly fix it.Abnormal Vibration of

Cabinets

Check obstacles. Remove obstacles.Obstacle at Outdoor Fan

Check wiring. Correctly connect wires.Disconnected Wire forIndoor Fan

Check AC chopper. Replace AC chopper.Failure of AC chopper

Wait for switching ofreversing Valve.(1 to 3 minutes)

If the reversing valve is not switched, check forinsufficient refrigerant.

Preparatory State forHeating Operation

Indoor Fandoes Not Operateeven whenCompressoris Operating

Check operationpressure. Add refrigerant.

Discharge pressure doesnot increase higher than2.2MPa due to insufficientrefrigerant.

Check each part is tightly secured.

Check each tightening screws.

Discharge pressure does not increase higher than 319 psi (2.2MPa) due to insufficient refrigerant.

Is there any abnormal sound from inside of compressor?

Tightly secure it.

Tightly secure it.

SM-16006-rev.1 3-43

TROUBLESHOOTING

3.3 Procedures for Checking

3.3.1 Self-Checking of PCBs using Wired ControllerRefer to Section 3.1.4 “Checking Wired Controller”

3.3.2 Self-Checking of Wired ControllerRefer to Section 3.1.4 “Checking Wired Controller”

3-44 SM-16006-rev.1

TROUBLESHOOTING

3.4 Test Run

Check Item Contents1 Damage Are the unit appearance and inside of the unit damaged?2 Fan Motor Is the fan motor runner installed in the center of the casing?

Is the fan motor installed away from the casing? (The fan motor should NOT be touched by the casing.)

3 Fasteners Are the screws loose due to vibration during transportation?Check that the fasteners are secured firmly during installation, especially for electrical wiring.

4 Refrigerant Leaks Check that there are NO refrigerant leaks. The tightening part of the pipe (flare part) may be loose because of vibration during transportation.

5 DSW Setting Check that the DSW setting is the same as the factory setting. (Refer to Section 3.1.3.)6 Insulation *1) Measure resistance between electrical component terminal and ground with a tester.

It is normal if the resistance is 1MW and over. If 1MW or less, do not perform the operation due to insulation failure of electrical parts. Do NOT apply electricity to the terminal board of operating line. (Control PCB may be damaged.)

7 Stop Valve Fully Open Prior to test run, check that the stop valve of the outdoor unit is completely open. 8 Power Source Phase The operation is NOT possible with the incorrect power phase order or lacking phase.

• Alarm “05” will be indicated on the LCD of the wired controller.• “05” will be indicated on the 7-segment display of the outdoor unit.Check the power source phase according to the caution label attached close to the outdoor unit terminal block or inside of the service cover.

9 Turn ON Crankcase Heater *2)

After completion of item checks 1 to 8, turn ON the power supply of the outdoor unit. Apply power to the outdoor unit(s) at least 12 hours prior to operation of the system for preheating of the compressor oil..

10 Indoor and Outdoor Temperature

<For Use in both Cooling and Heating Operation>Is indoor temperature DB80oF (27oC) or less during heating operation?(Heating operation may not be operated due to the activation of the overload operation prevention under the ambient temperature of 66oF (19oC) or over.)To perform the test run, set the test run mode with the wired controller.

*1): Insulation Resistancel If the unit has been turned OFF for long periods, insulation resistance may decrease to 1MW or less because

the refrigerant is retained in the compressor. Check the following points. (a) Disconnect the cables of the compressor and measure the insulation resistance of the compressor itself.

If the resistance is 1MW or less, an insulation failure of another electrical charge part has occurred. (b) If the resistance is 1MW or less, reconnect the compressor and turn ON the main power supply.

The compressor will warm up automatically. Check the insulation resistance again after applying current for at least three hours. (Preheating time depends on the air condition, piping length or refrigerant condition.)

l Before the leakage breaker is activated, check the rated capacity.

*2): Stoppage of Compressor Operation The compressor may NOT be operational for a maximum of four hours if the power supply is NOT turned ON in

advance. At this time, the stoppage Code (d1-22) is displayed on the LCD of wired controller and the forced Thermo-OFF function starts. If operation of the compressor is necessary, turn ON the power supply of the outdoor unit, wait for 30 seconds and press PSW5 on the outdoor unit PCB for at least three seconds. The forced Thermo-OFF function (d1-22) will be cancelled and the compressor operation will be available.

NOTE: Thermo-ON: The outdoor unit and some indoor units are running. Thermo-OFF: The outdoor unit and some indoor units stay on, but don't run.

Before the test run, check that the unit is appropriately installed according to the Installation and Maintenance Manual. After that, inspect the following items.

Turn OFF all the power source switches. Use a tester and make sure that all the switches are turned OFF.

SM-16006-rev.1 3-45

TROUBLESHOOTING

3.4.1 Test Run Using Wired Controller

(1) Wired Controller (CIW01)

OK

Menu

Back/Help ECOOn/Off

MenuButton

Back/HelpButton

On/OffButton

Back

Test Run Setting: 2 units

MODE : COOLSPEED : AUTO

ON RtrnSel. Adj.

Back to (1) after checking

Wired Zone ControllerIndication

No Indication * The power source is not turned ON.* The connection of the remote control cable is incorrect.

* The connecting wires of power supply line are incorrect or loose.

1. Connection between Connector and Wires2. Connecting Points of Remote Control Cable3. Contact of Connectors of Remote Control Cable

6. RSW Setting on Indoor Unit Printed Circuit Board7. Wire Connecting Order of Bridge Cable8. Connecting Points of Bridge Cable9. Contact of Connectors of Bridge Cable

* The electrical wiring between indoor unit and outdoor unit is disconnected, or the power source is not turned ON.* The setting of unit number is incorrect.

* The connection of control cables between each indoor unit are incorrect. (When one wired zone controller controls multiple units.)

Number ofconnected unitsis incorrect.

Fault Inspection Points after the Power Source is OFF

4. Connection Order of each Terminal Block5. Screw Fastening of each Terminal Block

Normal

Abnormal

Move to (4) on the next page.

(3) Checking Procedures for Abnormalities

If no indication or "00" appears, or the number of units indicated is less than the actual number of units, there is an abnormality.

If "TEST RUN" and the total number of the units connected to the wired zone controller (for example "2 units") are indicated on the wired zone controller, the connection of the remote control cable is correct. * The total number of indoor units connected is indicated on the liquid crystal display (LCD). * If the indicated number is not equal to the actual number of connected indoor units, the auto-address function is not performed correctly due to incorrect wiring, or electromagnetic interference.Turn OFF the power supply, and correct the wiring after checking the following points. (Do not repeat turning ON and OFF within 10 seconds.) (a) The power supply for the indoor unit is NOT turned ON or incorrect wiring. (b) Loose connection between Indoor Units or Wired Zone Controller. (c) Incorrect Setting of Indoor Unit Address (The indoor unit address is duplicated.)

(1) Turn ON the power source of the indoor and outdoor units.(2) Set the TEST RUN mode with the wired zone controller.

Press and hold the "Menu" and the "Back/Help" switches simultaneously for more than three seconds. Select “Test Run” by pressing “ ” and press “OK”. The Test Run screen will be displayed. NOTE: For other controllers, refer to the “Installation Manual” for each controller.

NOTE:When “00 unit” is indicated,the auto-address functionmay be performing.Cancel “Test Run” modeand set it again.

Wired Controller Indication

If "TEST RUN" and the total number of the units connected to the wired controller (for example "2 units") are indicated on the wired controller, the connection of the controller cable is correct.

(2) Set the TEST RUN mode with the wired controller.

(b) Loose connection between Indoor Units or Wired Controller.

* The connection of the controller cable is incorrect.

(When one wired controller controls multiple units.)

1. Connection between Connector and Wires 2. Connecting Points of Controller Cable 3. Contact of Connectors of Controller Cable

buttons

3-46 SM-16006-rev.1

TROUBLESHOOTING

Normal

Abnormal

The power source is not turned ON.

Back to (1) after checking

Wired Zone ControllerIndication

The operation lightflashes. (1 time/1 sec.)And the Unit No. andAlarm Code "03" flash.

The unit does notstart.

The connecting wires of operatingline are incorrect or loose.


The connection of remote controlcable is incorrect.

This is the same as above items 1 through 3.

The unit does notstart, or starts onceand then stops.

The connection of the thermistorsor other connectors are incorrect.Tripping of protector exists.

An authorized service person should check the unit using the Alarm Code Table in this manual.

1. Connecting Order of each Terminal Block. The fuse on the PCB may be blown due to miswiring. (Can be recovered only once by the DSW on the PCB)

The operation lightflashes. (1 time/2 sec.)

Other alarm codes orindications than thoseabove (Refer tothe alarm code table.)

Unit Condition Fault Inspection Points when thePower Source is OFF

Procedures for Recovery When TransmittingCircuit Fuse is Blown1. Correct the wiring for the terminal block.2. Setting positions of the model code are shown below.

2. Screw Fastening of each Terminal Block.3. Connecting Order of Power Line Between Indoor Units and Outdoor Unit.


The operation lampflashes. (1 time/1 sec.)And the Unit No. 00.Alarm Code dd andUnit Code E.00 flash.

The connecting wires of operatingline are incorrect or loose.

An authorized service person should check the unit using the Alarm Code Table in this manual.

(5) Checking Procedure for Abnormalities

If the units do not start or the operation light on the wired zone controller flashes, there is an abnormality.

Outdoor Unit PCBIndoor Unit PCB

ONOFF

1 2

DSW7ONOFF

1 2

DSW10

(4) Press “On/Off” switch.

The run test operation will be started. The operation mode, the airflow volume, the airflow direction and the run test time can be set on the Test Run screen. Select the item by pressing “ ”. The run test will be completed by pressing the “Back/Help” button during the stoppage or “On/Off” button during the operation.

The test run operation will be started. The operation mode, the airflow volume, the airflow direction and the test run time can be set on the Test Run screen.

The test run will be completed by pressing the “Back/Help” button during the stoppage or “On/Off” button during the operation.

If the units do not start or the operation light on the wired controller flashes, there is an abnormality.

Wired Controller Indication

The connection of controller cable is incorrect.

the Alarm Code Table.)The operation light

button.

SM-16006-rev.1 3-47

TROUBLESHOOTING

3.4.3 Checking the Test Run(1) Indoor and Outdoor Fan

Check that the indoor fan and outdoor fan rotate correctly and the airflow is smooth. (2) Power Supply Voltage

Check the power supply. If the power supply is abnormal, contact the electric power company. Usually, voltage drop will occur when starting the operation as shown in the figure (V2). In order to protect the device, comply with the following normal range of the power supply voltage.

<Normal Range of Power Supply Voltage> • Supply Voltage: Rated Voltage < +10% Operating Voltage (V3): Rated Voltage < +10% • Starting Voltage (V2): Rated Voltage > -15% Voltage Imbalance between Phase: < 3%

(3) Normal Operating Pressure Normal operating suction pressure is 29 to 159.5 psi (0.2 to 1.1 MPa) and normal operating discharge pressure is 145 to 507.6 psi (1.0 to 3.5 MPa) when the refrigerant charge quantity is correct. Check the operation pressure in the test run mode.

(4) High Pressure Switch Check the operation pressure of the high pressure switch in the table below.

(b) When the high pressure retry control is activated, alarm code “ ” will be indicated on the 7-segment display of the outdoor unit PCB. If the high pressure retry control occurs three times or more within 30 minutes, alarm code “ ” will be indicated on the LCD of the wired controller or the 7-segment display of the outdoor unit PCB.

(5) High Pressure Increase Retry (Protection Control)(a) High pressure will increase when one of the following procedures is performed.

Refrigerant Operation PressureR410A 601 psi (4.15MPa)

Initial Voltage

< Voltage Change >

(V1)

Starting Voltage(V2)

Operating Voltage(V3)

Cover the air inlet of outdoor unit during cooling operation.

Cover the air inlet of indoor unitduring heating operation.

NOTE: High pressure may not increase until the high pressure switch is activated because of the temperature condition.

< For CIW01 >

Sel. OP MODE


O.U. : RAS-3HVRNM2

01-02

AlarmRst

Address

Entr

IDU : ******ODU : ******

Chek

OK

3.4.2 Test Run from Outdoor Unit SideRefer to the Service Manual No. SM-15001.

SM-16006-rev.1 4-1

MAINTENANCE

4. Maintenance

4-2 SM-16006-rev.1

MAINTENANCE

4.1 Maintenance of Outdoor UnitRefer to the Service Manual No. SM-15001.

SM-16006-rev.1 4-3

MAINTENANCE(DOAS Type)

4.2.1.1 Removing Long Life FilterThe air intake grilles are field-supplied. Replacement of the long life filter depends on the way it was installed. Check it carefully.

TURN OFF all power source switches.

4.2.1 DOAS Type ((H,Y)DOA096B21S)

4.2 Maintenance of Indoor Unit

Use the specified non-flammable refrigerant (R410A) to the outdoor unit in the refrigerant cycle. Do not charge the unit with materials other than R410A, such as hydrocarbon refrigerants (propane, etc.), oxygen, flammable gases (acetylene, etc.) or poisonous gases when installing, maintaining and moving the unit. Contamination of these are extremely dangerous and may cause an explosion, a fire, and an injury.

Phillips ScrewdriverTool

Product Produced in 2017 or earlier

Product Produced in 2018 or later

Screws

Electrical Box Cover

Screws

Electrical Box Cover

4.2.1.2 Removing PCB(1) Remove the electrical box cover.

Product Produced in 2017 or earlier Loosen five M4 screws securing the electrical box cover and remove the electrical box cover by laying it down along electric wires.

Product Produced in 2018 or later Loosen seven M4 screws securing the electrical box cover and remove the electrical box cover.

4-4 SM-16006-rev.1



(2) There are three PCBs. PCB1 (Control PCB), PCB2 and PCB3 are secured with four PCB tabs. Clamp the center of the PCB tabs using a long-nose plier and pull out the PCB.

Phillips Screwdriver, Long-nose PliersTool

NOTE:Do not touch any components on the PCB. Do not apply excessive force to the PCB or it will cause a malfunction.

EFR1

RSW1

RSW2

DSW6

DSW4DSW3

DSW5

CN3

THM1CN2 THM2

EF2

DSW7

CN7

TP

CN1925THM4 THM5 PCN3PCN2

CN17

CN8

CN1

CN11

PC

N1

PC

N6

PC

N7

THM3

CN14

CA2

CA1

YX

2Y

X3

YX

4

X2

X3

RX

4X

5 YX

5

CN

404

CN

403

CN

402

CN

401

EFS1

DSW8

L2L1

Tran

smis

sion

12

/R.C

.SBA

TB1

Connector forExpansion Valve PCB2

TB2

Connector forThermistor

PCB3

PCB1Connector forFloat Switch

SM-16006-rev.1 4-5


4.2.1.3 Removing Fan and Fan MotorRemove the indoor fan and the fan motor from the back bottom side.

(1) Remove the lower M4 screws securing the inlet flange.

(2) Remove the lower M4 screws that secure the back bottom side.




Inlet Flange

M4 Screws (×4)

Lower Cover M4 Screws for Product Produced in 2017 or earlier (×11)M4 Screws for Product Produced in 2018 or later (×13)

Only for Product Producedin 2018 or later

4-6 SM-16006-rev.1


(3) Remove the lower cover so the fan assembly is visible. Remove the wiring for the motor by unclipping the cord clamp.

(4) Remove the screws that are securing plate and move the casing slightly.(5) Loosen the four screws of the motor holding bands, and remove the motor and the casing at the same

time.



Motor Holding Band

M4 Screws (×8)

Hexagonal WrenchTool

Fan Runner

Hexagonal Wrench

Motor Shaft

(6) Loosen the screws securing the fan motor shaft and the fan runner using the hexagonal wrench (for M8 screw), and remove the fan runner.

SM-16006-rev.1 4-7


4.2.1.4 Removing Thermistors for Liquid Pipe and Gas Pipe(1) Remove four M4 screws securing the service cover and remove the service cover.

(2) Remove the cork tape, pipe insulation, and thermistor clamps. Then remove the liquid pipe and gas pipe thermistors.




Service Cover

M4 Screws (×4)

Expansion Valve

Thermistor for Liquid Pipe

Thermistor for Gas Pipe

4-8 SM-16006-rev.1


4.2.1.5 Removing Float Switch(1) Remove the service cover according to Section 4.2.1.4 “Removing Thermistors for Liquid Pipe and

Gas Pipe”.(2) Remove two M4 screws securing the float switch onto the side cover and remove the float switch.



NOTE:When assembling the float switch, handle carefully. (Tightening Torque: Approx. 0.2lbf·ft (0.3N·m). Overtightening damages the nut.) If the float switch is dropped, it will be damaged and should be replaced.

M4 Screws (×2)Float Switch

SM-16006-rev.1 4-9


4.2.1.6 Removing Drain PumpThe drain pump is secured to the service cover. Remove the securing screws and remove the drain pump.



Drain ConnectionService Cover

Indoor Unit

Drain Pan Drain Pump

A

AView from

4-10 SM-16006-rev.1


4.2.1.7 Removing Drain Pan(1) Remove four M4 screws securing the inlet flange according to Section 4.2.1.3 (1).(2) Remove eleven M4 screws securing the lower cover at the indoor fan side and remove the lower cover

according to Section 4.2.1.3 (2).(3) Remove fourteen M4 screws securing the lower cover at the indoor heat exchanger side and remove

the lower cover.(4) Lower the drain pan.


Phillips Screwdriver,Bucket approximately 1.3 gal (5 liters)Tool

(Both Sides)Drain Pan

Lower Cover

M4 Screws (×14)

(Main Parts)MAINTENANCE

SM-16006-rev.1 4-11

4.3 Main Parts4.3.1 for Outdoor UnitRefer to the Service Manual No. SM-15001

4.3.2 for Change-Over BoxRefer to the Service Manual No. SM-15001


4-12 SM-16006-rev.1

4.3.3 for Indoor Units4.3.3.1 Printed Circuit Board

DOAS

Arrangement of Connectors and Check Points for PCB1 (PI065)

Arrangement of Connectors and Check Points for PCB2 (PI001Q)

CN404 PCB1-CN17

X5 X4

R

X3 X2CN403 OUTPUT2

CN402 OUTPUT1

CN401 INPUT

ME HISLO LO

YX5 YX4 YX3 YX2SLO LO ME HI

A 54PI001Q H7C00344

X5 X4 X3 X2

R

CN2 THM1 THM2 THM3 THM5 PCN2 PCN3

PCN6

PCN1

PCN7CN11CN1CN17VCC12 VCC15

CN14


SM-16006-rev.1 4-13

4.3.3.2 Fan Motor

DOAS

6-1/4 (159) 7-3/8 (187)

3/8 (10)

φ 9/

16 (1

5)

φ 9/

16 (1

5)

φ 9/

16 (1

4)

5/8 (16)

1-11/16(43)

13-13/16 (351)

X2CAP1-

1

CAP1-2

X5

φ 5-11/16 (144)

Y

ZX

13/16(20)

φ 6-7/8 (175)

Unit: inch (mm)

Motor B Motor A

Dimension X Y Z

Motor A 39-3/8(1000)

33-7/16(850)

43-5/16(1100)

Motor B 57-1/16(1450)

51-3/16(1300)

61(1550)


4-14 SM-16006-rev.1

DOAS

4.3.3.3 Thermistor

(1) Position of Thermistor

Thermistor forAir Outlet Temperature (THM2)

Thermistor forAir Inlet Temperature (THM1)

Thermistor forIndoor Heat ExchangerGas Pipe Temperature(THM5)

Thermistor forIndoor Heat ExchangerLiquid Pipe Temperature(For Freeze Protection)(THM3)


SM-16006-rev.1 4-15

(2) Thermistor for Indoor Discharge Air Temperature < Only for Outlet Air Temperature Control > (For Room Temperature Control)

The room temperature is controlled by the thermistor for indoor discharge air temperature detecting the temperature of heat exchanged outdoor air. The setting temperature setpoint is indicated on the LCD of the wired controller by number. Adjust the setting temperature setpoint for prevention from excessive cooling and heating.

The resistance characteristics of thermistor are shown in the above figure.

(3) Thermistor for Indoor Suction Air Temperature The resistance characteristics of thermistor are shown in the above figure.

When the temperature of the heat exchanger is below 32oF (0oC),unit becomes thermo-OFF automatically and over 57oF (14oC),unit becomes thermo-ON again.

Prevention from freezingonto the heat exchanger inCOOL and DRY operation.

(4) Thermistor for Liquid Pipe Temperature of Indoor Heat Exchanger The resistance characteristics of thermistor are shown in the above figure.

When the temperature of the heat exchanger is below 32oF (0oC),unit becomes thermo-OFF automatically and over 57oF (14oC),unit becomes thermo-ON again.

Prevention from freezingonto the heat exchanger inCOOL and DRY operation.

(5) Thermistor for Gas Pipe Temperature of Indoor Heat Exchanger The evaporating temperature in heating operation is detected. The resistance characteristics of thermistor are shown in the above figure.

Indoor inlet thermistor is detecting the outdoor temperature. When the outdoor temperature approaches the setpoint of wired controller unit becomes thermo-OFF.

0

10

20

30

40

50

60

70

80

5(-15)

14(-10)

23(-5)

0(0)

41(5)

50(10)

59(15)

68(20)

77(25)

86(30)

95(35)

104(40)

113(45)

122(50)

131(55)

140(60)

82

61

46

35

2720.5

1612.5

10 8 5.3 3.6 2.5

90

Ambient Temperature (oC)

ThermistorResistance

Thermistor Characteristics


4-16 SM-16006-rev.1

4.3.3.4 Electronic Expansion Valve

Micro-Computer

Pulse Signal

2-2 Phase Permanent Magnetic Pulse Motor

Opening of Expansion Valve is Controlledby the indoor unit PCB1.

Refrigerant Flow Control

Precise Control

Pulse Motor

Gear

Driver

Valve

Bellows

Coil

Magnet

Electronic Expansion Valve

Indoor Unit Applicable Model Expansion Valve with Motor

DOAS (H,Y)DOA096B21S EFM-A0YPHS-2


SM-16006-rev.1 4-17

Specifications

Working Temperature Range -22oF to 158oF (-30oC to 70oC)Refrigerant Used R410AInsulation Resistance Min. 100MΩ (at 500VDC Megger)Rated Voltage DC12V+1.2V

Drive Condition 100 - 250 PPS2-2 Phase Excitation

Coil Resistance 150+15Ω (68oF (20oC))

Wiring Diagram,Drive Circuit andActivation Mode

φ3

φ1White

Red (COM)

Brown(COM)

Orange

φ2 φ4

Yellow Blue

M

Phase 1 2 3 4

f1 ON OFF OFF ON

f2 ON ON OFF OFF

f3 OFF ON ON OFF

f4 OFF OFF ON ON

OPEN: 4 3 2 1 4CLOSE: 1 2 3 4 1

Checking Method of Electronic Expansion Valve for Indoor Unit

Indoor Unit Electronic Expansion ValveLocked

(Fully Closed)Check for the liquid pipe temperature during heating operation.It is abnormal if the temperature does not increase.

Locked(Slightly Open)

It is abnormal under the following conditions. The temperature of freeze protection thermistor becomes lower than the suction air temperature when the unit being checked is stopped and the other units are in cooling operation.

UnitUnderChecking

Electronic Expansion ValveFreeze ProtectionThermistor

OtherUnits

Locked(Fully Open)

SM-16006-rev.1 5-1

EXTERNAL INPUT/OUTPUT AND FUNCTION SETTING

5. External Input/Output andFunction Setting

5-2 SM-16006-rev.1


5.1 DIP Switch Settings of Outdoor Unit


5.2 High Static Pressure Setting (DSW5-No.5: ON)


5.3 External Input/Output and Function Setting Mode for Outdoor Unit


SM-16006-rev.1 5-3


5.4 External Input/Output and Function Setting Mode for Indoor UnitSettingMethodfromWiredController Thefunctionselectionandtheinput/outputsettingcanbesetfromthetestrunmenu.

OK

Test Run Menu


/03

Test Run

Entr RtrnSel. Back

Pressandhold“Menu”and“Back/Help”simultaneouslyfor3secondsduringthenormalmode.

OK

Menu

Back/Help ECOOn/Off

A/C

MODE SPEED TEMP

COOL

LOUV. Adj.

Meeting RoomLOUV.

FLTR

<NormalModeDisplay> <TestRunMenuDisplay>

5-4 SM-16006-rev.1


7.Select“Yes”andpress“OK”. TheTestRunmenuwillbedisplayedafterthesettingisconfirmed. If“No”isselected,thescreenwillreturnto"4".

OK


b1 00 01

23

b2 00 b3 00 b4 00 b5 00

Item Setting

/



01

23

b1 00 b2 00 b3 01 b4 00 b5 00

Item Setting

/

Adj. Entr RtrnSel. BackOK Back

OK

Input/Output:01-03

Input 1 00 CN3 1-2 Input 2 00 CN3 2-3 Output1 00 CN7 1-2 Output2 00 CN7 1-3 Output3 00 CN8 1-2

Item Setting Connector


OK

Input/Output:01-03

Input 1 00 CN3 1-2 Input 2 00 CN3 2-3 Output1 01 CN7 1-2 Output2 00 CN7 1-3 Output3 00 CN8 1-2

Item Setting Connector


1.Pressandhold“Menu”and“Back/Help”simultaneouslyforatleastthreesecondsduringthenormalmode(whenunitisnotoperated).TheTestRunmenuwillbedisplayed.

2.Select“FunctionSelection”or“Input/Output”fromtheTestRunmenuandpress“OK”.

OK

Test Run Menu


/03

Test Run

Entr RtrnSel. Back

OK

Function Selection

01-01All

01-0201-0301-04

Entr RtrnSel. Back

3.Selecttheindoorunitbypressing“ ”andtouch“OK”. (ThisscreenisNOTdisplayedwhenthenumberofanindoorunitconnectedwiththecontrolleris "1".Inthiscase,"4"willbedisplayed.)

FunctionSelection

4.Press“ ”andselecttheitem.

5.Press“ ”andchangethesetting.

Input/OutputSetting

4.Press“ ”andselecttheitem.

5.Press“ ”andchangethesetting.

OK

Confirm functionselection setting?


Yes No

Sel. Entr RtrnBack

6.Press“OK”sothattheconfirmationscreenwillbedisplayed.

8.Press“Back/Help”ontheTestRunmenutoreturntothenormalmode.

(FigureforFunctionSelection)

Tosetotherunits,press“Back/Help”at"4"and"5"sothatthescreenwillreturnto"3". (Ifthenumberofanindoorunitconnectedwiththecontrolleris"1",thescreenwillreturnto"1".)

FunctionSelectionandInput/OutputSetting

SM-16006-rev.1 5-5


5.4.1 ExternalInputandOutputSettings

OntheIndoorUnitPrintedCircuitBoard(PCB),therearetwoinputterminals(CN3)toreceiveexternalsignalsandthreeoutputterminals(CN7,CN8)tosendsignalsout.Functionsshowninthesetablesareavailablewhensettinginputandoutputterminals.

<InputandOutputNumberDisplayandConnectors>

<InputandOutputSettingsandDisplayCodes>

InputNumberDisplayPort

FactorySettingSetting

Input/OutputIndication SettingItem IndicationInput1 CN31-2 RemoteON/OFF1(Level) 03Input2 CN32-3 ProhibitingRemoteControlafterManualStoppage 06Output1 CN71-2 Operation 01Output2 CN71-3 Alarm 02Output3 CN81-2 Thermo-ONforHeating 06

CodeIndicated Input Output00 Not set Not set01 RoomThermostat(forCooling) Operation02 RoomThermostat(forHeating) Alarm03 RemoteON/OFF1(Level) Cooling04 RemoteON/OFF2(Operation) Thermo-ONforCooling05 RemoteON/OFF2(Stoppage) Heating06 ProhibitingRemoteControlafterManualStoppage Thermo-ONforHeating07 RemoteCooling/HeatingChange TotalHeatExchanger

NOTES:1. Changetheoptionalsettingafterwaitingatleastthreeminuteselapsedtimeafterstart-up.2. Donotsettheelevatinggrilleforthetotalheatexchanger.3. Recordthesettingconditionsforeachinputandoutputinthe“Setting”columnofthetable.

5-6 SM-16006-rev.1


5.4.1.1 RemoteControlON/OFFFunctionThisfunctionprovidesacontroltostopandstartthesystemautomaticallyfromaremoteplace.Fourmethodsareavailablebyusingeachsignalfromabuildingmanagementsystem.

(1) RemoteON/OFF1(LevelSignalInput)[InputSetting:Code(03)] ThisisanON/OFFfunctionfromaremoteplacebyusinglevelsignals(ON/OFF).Anexampleof

basicwiringandtimechartisshownbelow.

NOTES:1.Pickingupsignalwithin10secondsafterpowersupplyisturnedONisnotpossibleduetoinitializationofthecomponents. Donotchangethesignal(ON/OFF)inthisperiod.

2.WiredControllerisrequiredforthisfunction.3.Ifmultipleindoorunitsareconnectedtothesamecommunicationcableforwiredcontroller,inputthesignaltoanyoftheseindoorunits.

4.Whenthecommunicationcableisnotusedinthetwin,tripleandquadcombinationsforsimultaneousoperation,inputthesignaltothemainindoorunit.

SS3

X1

PowerSource

Control Circuit

Indoor Unit PCB

CN3

X1

3P Connector

321

21

NOTE:When the unit is started by the remote ON/OFF switch,the fan speed is subject to the mode memorized inthe wired controller.

SS3: Remote ON/OFF

Wiring Diagram Example of Remote ON/OFF(Example: Remote ON/OFF is set to terminals 1 and 2 of CN3)

ONOFF

ONOFF

Time

Unit Operation

Signal to terminals 1 & 2 of CN3

Control by Wired Controller

Press the ON/OFF switch.

Time Chart

NOTE:Operation priority is given to the remoteON/OFF signal or wired controllersignal which is given last.

(Example: Remote ON/OFF is set to terminal 1 and 2 of CN3)

SM-16006-rev.1 5-7


(2) RemoteON/OFF2(PulseSignalInput)[InputSetting:Code(04)] ThisisanON/OFFfunctionfromaremoteplacebyusingpulsesignals.Anexampleofbasicwiring

andtimechartisshownbelow.

ON

X1

OFF

X2

PowerSource

Control Circuit

Indoor Unit PCB

CN3

X1

X23P Connector

321

321

NOTES:The pulse range shall be 200ms or more.

Wiring Diagram Example of Remote ON/OFF 2Example: Operation Input is set to terminals 2 and 3 of CN3. Stoppage Input is set to terminals 1 and 2 of CN3.( )

Signal to terminals 2 & 3 of CN3 (Operation)

Signal to terminals 1 & 2 of CN3 (Stop)

NOTE:Operation priority is given to the remoteON/OFF signal or wired controllersignal which is given last.


Unit Operation

Time Chart

Time

Example: Operation Input is set to terminals 2 and 3 of CN3. Stoppage Input is set to terminals 1 and 2 of CN3.( )

NOTES:1.Pickingupsignalwithin10secondsafterpowersupplyisturnedONisnotpossibleduetoinitializationofthecomponents. Donotchangethesignal(ON/OFF)inthisperiod.



5-8 SM-16006-rev.1


(3) RemoteON/OFF3(PulseSignalInput)[InputSetting:Code(05)] ThesettingforRemoteON/OFF3shallbethesameasthatforRemoteON/OFF2.Byusingthe

signalfromabuildingmanagementsystem,theairconditionerscanbestopped. Ifasignalisinputduringthestoppageoftheairconditioner,theairconditionerremainsunchanged. Anexampleofbasicwiringandtimechartisshownbelow.

OFF

X1

PowerSource

Control Circuit

Indoor Unit PCB

CN3

X1

3P Connector

321

21

NOTE:The pulse range shall be 200ms or more.

Wiring Diagram Example of Remote ON/OFF 3(Example: Stoppage Input is set to terminals 1 and 2 of CN3.)



Unit Operation

Time Chart

Time

(Example: Stoppage Input is set to terminals 1 and 2 of CN3.)

NOTES:1.Pickingupsignalwithin10secondsafterpowersupplyisturnedONisnotpossibleduetoinitialization ofthecomponents. Donotchangethesignal(ON/OFF)inthisperiod.



SM-16006-rev.1 5-9


NOTES:1.Pickingupsignalwithin10secondsafterpowersupplyisturnedONisnotpossibleduetoinitializingofcomponents. Donotchangethesignal(ON/OFF)inthisperiod.

2.WiredControllerisrequiredforthisfunction.3.ThefollowingON/OFFfunctionsarenotavailableafterthemanual(forced)stoppagebecausecommandsfromthewiredcontrollerarecancelled.

a.ON/OFFfunctionfromaremoteplace b.ON/OFFfunctionbythecentralizedcontrollerwhilethewirelesswiredcontrollerisbeingused.

( )

SS3

X1

PowerSource

Indoor Unit PCB

CN3

X1

3P Connector

321

32

SS3: Forced Stoppage Sw.

Wiring Diagram Example Example: Forbidding Remote Control after Manual (Forced) Stoppage is set to terminals 2 and 3 of CN3.



Unit Operation

Time Chart

Time

Example: Forbidding Remote Control after Manual (Forced) Stoppage is set to terminals 2 and 3 of CN3.

(4) ProhibitingRemoteControlafterManual(Forced)Stoppage(LevelSignalInput) [InputSetting:Code(06)]

Byusingthesignalfromabuildingmanagementsystem,theindoorunitscanbestoppedandtheindividualcommandsfromthewiredcontrollerarecanceled.Anexampleofbasicwiringandtimechartisshownbelow.

ThisfunctioncanbeusedforBcontactsifusing“SelectionofForcedStoppageLogic”inthesection5.4.2.1“FunctionSelectionItem.”Anexampleoftimechartisshownbelow.



Unit Operation

Time Chart

Time

(Example: Setting for B Contacts)

5-10 SM-16006-rev.1


Table5.1SpecificationsonRequiredComponentsfor(1)to(4)Functions

NOTE:1.MakethewiresCN3asshortaspossible.Donotinstallthewireswiththe220Vpowerline.Installthemmorethan12in.(30cm)awayfromeachother.(Intersectingthemisacceptable.)

Ifthewiresareinstalledalongthepowerline,complywiththefollowingpointstopreventnoise.a.Passeitherofthelowvoltagewireand220Vpowerlinethroughametalconduittubeandgroundoneend.

b.Useashieldedwireforalowvoltagewireandgroundoneend. Themaximumwiringlengthis230ft.(70m).

2.Whenusingthisfunction,itisrecommendedthatsafetydevicessuchasanelectricleakagebreakerorsmokedetector,etc.beusedbecausethisisanunattendedoperation.

Component ManufacturerorSpecifications Remarks

AuxiliaryRelay(X1,X2) OMRONMiniPowerRelayModel:MY1F/2ForEquivalent Voltage220V

ChangeoverSwitch(SS2,SS3) ManualType

3PConnectorCord OptionalPartPCC-1A(ConnectabletoJSTConnectorXARP-3),12V

FiveCordswithConnectorsasOneSet

Cord(Indoor)LowVoltage AWG22(0.3mm2) lessthan12V220VClass AWG20orAWG18(0.5to0.75mm2)

Cord(Outdoor)LowVoltage AWG20orAWG18(0.5to0.75mm2) lessthan12V220VClass AWG14(2mm2)

SM-16006-rev.1 5-11


5.4.1.2 PowerSupplyON/OFF1(AutomaticOperationWhenPowerSupplyIsON)Thisfunctionisutilizedtorun/stoptheunitbyturningON/OFFthepowersupply.Whenthisfunctionisutilizedintheconditionthatthereisnopersontooperatetheunit,monitorthesystemfordisasterprevention.Whenusingthisfunction,refertooperationforWiredControlleritem(30)“PowerSupplyON/OFF(AutomaticOperationWhenPowerSupplyIsON)(d1)forthesetting. NOTE:1.TheunitwillbestoppedevenwhenthepowersupplyisturnedON/OFFduetopowerfailure.Ifpowerfailureoccursduringthestoppageoftheunit,theoperationisrestartedafterthepowersupplyisrestored.

2.WiredControllerisrequiredforthisfunction.3.Whenthecommunicationcableisnotusedinthetwin,tripleandquadcombinationsforsimultaneousoperation,setthisfunctiononlytothemainindoorunit.

5.4.1.3 PowerSupplyON/OFF2(RestartingFunctionAfterPowerFailure)Thisfunctionisutilizedtorestarttheunitoperationautomaticallywhenthepowersupplyisrestoredafterthepowerfailureover2seconds.Incaseofthepowerfailurefor2secondsorless,thestandardunitmemorizealltheoperationmodeandrestartstheoperationautomatically.(Thecompressorrestartsoperationafter3minutesguardinadditiontopowerfailuretimeforupto2seconds.)Whenthisfunctionisutilizedintheconditionthatthereisnopersontooperatetheunit,monitorthesystemfordisasterprevention.

NOTE:1.Ifpowerfailureoccursduringthestoppageoftheunit,theunitremainsstoppedafterthepowersupplyisrestored.

2.WiredControllerisrequiredtobeconnectedforsettingthisfunction.3.Whenthecommunicationcableisnotusedinthetwin,tripleandquadcombinationsforsimultaneousoperation,setthisfunctiononlytothemainindoorunit.

5-12 SM-16006-rev.1


5.4.1.4 ControlbyField-SuppliedRoomThermostat [InputSetting:Code(01)(forCooling),Code(02)(forHeating)]

Inthecasethatafield-suppliedroomthermostatisusedinsteadoftheinletthermistoroftheindoorunitinordertorun/stopthecompressor,connectwiresasshownbelow.

OperationCoolingOperation: CompressorisONbyclosingterminals2and3ofCN3 CompressorisOFFbyopeningterminals2and3ofCN3HeatingOperation: CompressorisONbyclosingterminals1and2ofCN3 CompressorisOFFbyopeningterminals1and2ofCN3

2

TemperatureIncrease

Thermostat

CN3321

3

1

Indoor Unit PCB

3P Connector

Field-Supplied Room ThermostatExample: Room Thermostat Input (for Cooling) is set to terminals 2 and 3 of CN3 Room Thermostat Input (for Heating) is set to terminals 1 and 2 of CN3

NOTE:The contact capacity of a thermostatshall be DC12V and several mA. Select a thermostat which makes and breaks thecontact with this capacity.

( )

NOTE:1.MakethewiresCN3asshortaspossible.Donotinstallthewiresalongthe220Vpowerline.Installthemmorethan12in.(30cm)awayfromeachother.(Intersectingthemisacceptable.)

Ifthewiresareinstalledalongthepowerline,complywiththefollowingpointstopreventnoise. a.Passeitherofthelowvoltagewireand220Vpowerlinethroughametaltubeandgroundoneend. b.Useashieldedwireforalowvoltagewireandgroundoneend. Themaximumwiringlengthis230ft.(70m).2.Whenusingthisfunction,itisrecommendedthatsafetydevicessuchasanelectricleakagebreakerorsmokedetector,etc.beusedbecausethisisanunattendedoperation.

3.Forathermostat,donotuseathermostatwhichusesmercuryforswitch,becausechatteringislikelytooccuratON/OFF.

4.Useathermostatwithadifferentialof2oF(1.5oC)ormore.5.Complywiththefollowingpoints.Ifnot,ahigh-voltagecircuitbreakerwillbeactivatedortheunitwillrepeatON/OFFoperation.

a.Installathermostatwhereairinlettemperaturecanbedetectedcorrectly. b.Installathermostatwheredischargeairfromtheunitdoesnotblowdirectlyagainstit.6.Whenusingaroomthermostat,seteachroomthermostat(forcoolingandheating)correctly.Ifanyofthemissetincorrectly,theotherroomthermostatdoesnotoperate.

SM-16006-rev.1 5-13


NOTES:1.WiredControllerisrequiredforthisfunction.2.Refertothetable5.1fordetailsoftherequiredcomponents.3.Ifmultipleindoorunitsareconnectedtothesamecommunicationcableforwiredcontroller,inputthesignaltoanyoftheseindoorunits.

4.Whenthecommunicationcableisnotusedinthetwin,tripleandquadcombinationsforsimultaneousoperation,setthisfunctiononlytothemainindoorunit.

Indoor Unit PCB

Wiring Diagram Example(Example: Remote Cooling/Heating Change is set to terminals 1 and 2 of CN3.)

CN3

X1

3P Connector

321

21

COOLHEAT

X1

PowerSource

Signal to terminals 1 & 2 of CN3 HeatCool

HeatCoolOperation Mode of Unit

Control by Wired Controller (Cool)

Time Chart(Example: Remote Cooling/Heating Change is set to terminals 1 and 2 of CN3.)

Control by Wired Controller (Heat)

5.4.1.5 RemoteCooling/HeatingChange[InputSetting:Code(07)]Thecoolingorheatingoperationmodecanbechangedbygivingacontactsignalfromtheoutsidetotheunit.SetthisfunctiontoCN3withawiredcontrolleraccordingtothesection5.4.2.1“FunctionSelectionItem.”ThisfunctiondetectsONtoOFFtransitionandOFFtoONtransition.Ofthecommandsbythissignalandawiredcontroller,thecommandgivenlaterispreferentiallyexecuted.Anexampleofbasicwiringandtimechartisshownbelow.

5-14 SM-16006-rev.1


5.4.1.6 PickingUpOperationSignalUpto3ofthefollowing7signalscanbepickedupbysettingthisfunctiontoCN7andCN8accordingtothefollowingfigures.Makesuretouseafield-suppliedremotecontroladopterPSC-5RAforpickingupsignals.Thewiringlengthshallbe230ft.(70m)orless.Thesettingforpickingupsignals(1),(2)and(4)arealreadysetatthefactory.

(1)PickingUpOperationSignal[OutputSetting:Code(01)] Thisfunctionisutilizedtopickupanoperationsignalthathasnothingtodowiththecompressor

stoppagebyathermistor.Anexampleofbasicwiringisshownbelow.Thecontactoftheauxiliaryrelay“RYa”isclosedwhenthisoperationsignalisgiven.Thisfunctionenablesthesignalcheckduringremotecontroloperationandaninterlockofthefanforairinlet,etc..Thecontactoftheauxiliaryrelay“RYa”isopenedwhiletheprotectiondevicesareactivated.

Picking Up Operation Signal(Example: Operation Output is set to terminals 1 and 2 of CN7.)

RY

CN7 Connector

CN7

12

3 P Connector

Indoor Unit PCB

Auxiliary RelayRYa

(2) PickingUpAlarmSignal[OutputSetting:Code(02)] Thissignalisutilizedtopickupanalarmsignalwhilesafetydevicesareactivated.However,this

functionisnotavailableduringabnormalcommunicationofthewiredcontroller.Anexampleofbasicwiringisshownbelow.Thecontactoftheauxiliaryrelay“RYa”isclosedwhiletheprotectiondevicesareactivated.

CN7 ConnectorIndoor Unit PCB

Auxiliary Relay

CN7

RYa

13

3 P Connector

RY

Picking Up Alarm Signal

(Example: Alarm Output is set to terminals 1 and 3 of CN7.)

SM-16006-rev.1 5-15


(5)PickingUpHeatingOperationSignal[OutputSetting:Code(05)] Thisfunctionisutilizedtopickupheatingoperationsignalthathasnothingtodowiththecompressor

stoppagebyathermistor.Anexampleofbasicwiringisshownbelow.Thecontactoftheauxiliaryrelay“RYa”isclosedwhenthisoperationsignalisgiven.

Picking Up Operation Signal(Example: Heating Operation Output is set to terminals 1 and 3 of CN7.)

CN7 Connector

CN7

1

3 P Connector

Indoor Unit PCB

3

Auxiliary RelayRYa

RY

(3)PickingUpCoolingOperationSignal[OutputSetting:Code(03)] Thisfunctionisutilizedtopickupcoolingoperationsignalthathasnothingtodowiththecompressor

stoppagebyathermistor.Anexampleofbasicwiringisshownbelow.Thecontactoftheauxiliaryrelay“RYa”isclosedwhenthisoperationsignalisgiven.

Picking Up Operation Signal(Example: Cooling Operation Output is set to terminals 1 and 3 of CN7.)

CN7 Connector

CN7

1

3 P Connector

Indoor Unit PCB

3

Auxiliary RelayRYa

RY

(4)PickingUpCoolingThermo-ONSignal[OutputSetting:Code(04)] Thisfunctionisutilizedtopickupthermo-ONsignalduringthecoolingoperation.Anexampleofbasic

wiringisshownbelow.Thecontactoftheauxiliaryrelay“RYa”isclosedduringthermo-ONincoolingoperation.

Picking Up Cooling Operation Signal(Example: Cooling Thermo-ON Output is set to terminals 1 and 3 of CN7.)

CN7 Connector

CN7

1

3 P Connector

Indoor Unit PCB

3

Auxiliary RelayRYa

RY

5-16 SM-16006-rev.1


(7)PickingUpTotalHeatExchangerSignal[OutputSetting:Code(07)] Thisfunctionisutilizedtopickuptotalheatexchangersignalduringtheventilationmodeselectedwith

awiredcontroller.Anexampleofbasicwiringisshownbelow.

Picking Up Total Heat Exchanger Signal(Example: Cooling Thermo-ON Output is set to terminals 1 and 3 of CN7.)

CN7 Connector

CN7

1

3 P Connector

Indoor Unit PCB

3

Auxiliary RelayRYa

RY

NOTE:Theseareexamplesusinggeneral-purposerelay.

(6)PickingUpHeatingThermo-ONSignal[OutputSetting:Code(06)] Thisfunctionisutilizedtopickupthermo-ONsignalduringtheheatingoperation.Anexampleofbasic

wiringisshownbelow.Thecontactoftheauxiliaryrelay“RYa”isclosedduringthermo-ONinheatingoperation.Usethisfunctionforoperationofacirculatororahumidifier.

Picking Up Operation Signal(Example: Heating Thermo-ON Output is set to terminals 1 and 2 of CN8.)

RY

CN8 Connector

CN8

12

3 P Connector

Indoor Unit PCB

Auxiliary RelayRYa

SM-16006-rev.1 5-17


forDOAS

5.4.2.1 FunctionSelectionItem

5.4.2 FunctionSetting

No. Items OptionalFunction IndividualSetting

SettingCondition Contents

1 b1 SettingofConnected OutdoorUnitType ×

0001020304

-VRF---

2 b2 ConstantAirVolumeMode 0001

NotAvailableAvailable

3 b3 NotPrepared - - NotUsed(Useas00conditions)

4 b4 ChangeofFilterCleaningTime

0001020304

Standard1,200hrs(Factory-Setting)100 hrs1,200hrs2,500hrsNoIndication

5 b5 FixingofOperationMode × 0001

StandardFixed

6 b6 FixingofSettingTemperature × 0001

StandardFixed

7 b7 FixingofOperationasExclusiveCoolingUnit × 00

01StandardFixed

8 b8 AutomaticCOOL/HEATOperation × 0001


9 b9 FixingofFanSpeed × 0001

StandardFixed

10 bA NotPrepared - - NotUsed

11 bb CoolingTemperatureCompensation duetoUnevenHeatLoad

000102

Standard(NoCompensation)SetTemp.–2oF(–1oC)SetTemp.–3oF(–2oC)

12 bC NotPrepared - - NotUsed(Useas00conditions)13 bd NotPrepared - - NotUsed(Useas00conditions)14 bE NotPrepared - - NotUsed(Useas00conditions)15 C1 NotPrepared - - NotUsed(Useas00conditions)16 C2 NotPrepared - - NotUsed17 C3 NotPrepared - - NotUsed(Useas00conditions)18 C4 NotPrepared - - NotUsed(Useas00conditions)

19 C5

OperationModefor OutletAirTemperatureCorrection (OnlyforOutletAirTemperature ControlMode)

000102

CoolingandHeatingCoolingHeating

20 C6 NotPrepared - - NotUsed(Useas00conditions)

21 C7CancelingofEnforced3Minutes MinimumOperationTimeofCompressor

0001

StandardCancelation

22 C8 SelectionofThermistorfor IndoorTemperature

000102

RemoteSensorThermistorofWiredControllerAverageValueofRemoteSensorand ThermistorofWiredController

23 C9 NotPrepared - - NotUsed24 CA NotPrepared - - NotUsed

25 Cb SelectionofForcedStoppageLogic × 0001

ForcedStoppageInput:AContactForcedStoppageInput:BContact

26 CC NotPrepared - - NotUsed(Useas00conditions)

5-18 SM-16006-rev.1




27 Cd ChangeofControlMode × 0001

IndoorTemperatureControlOutletAirTemperatureControl

28 CE NotPrepared - - NotUsed(Useas00conditions)

29 CF

TemperatureCorrectionfor Thermo-ON/OFF (OnlyforOutletAirTemperature ControlMode)

000102

0oF(0oC)3oF(2oC)9oF(5oC)

30 d1 NotPrepared - - NotUsed31 d2 NotPrepared - - NotUsed

32 d3 PowerSupplyON/OFF2 0001


33 d4 PreventionforCoolingDischargeAirTemperatureDecrease 00

01NotAvailableAvailable

34 d5 NotPrepared - - NotUsed(Useas00conditions)35 d6 NotPrepared - - NotUsed(Useas00conditions)

36 d7OutletAirTemperatureCorrection (OnlyforOutletAirTemperature ControlMode)

0001020304050607

0 oF(0oC) +3 oF(+2oC) +7 oF(+4oC) +11 oF(+6oC) -3 oF(-2oC) -7 oF(-4oC) -11 oF(-6oC) -11 oF(-6oC)

37 E1Thermo-ON/OFFControl (OnlyforIndoorTemperature ControlMode)

000102

InletTemperatureInletandIndoorTemperatureIndoorTemperature

38 E2PerformanceRestraintControl (OnlyforIndoorTemperature ControlMode)

0001


39 E3 Hot-StartControl 0001


40 E4 NotPrepared - - NotUsed(Useas00conditions)41 E5 NotPrepared - - NotUsed(Useas00conditions)

42 E6 IndoorFanOperationTimeAfterCoolingOperationStoppage

000102

NotAvailable60min.120min.

43 E7 NotPrepared - - NotUsed(Useas00conditions)44 E8 NotPrepared - - NotUsed(Useas00conditions)45 E9 NotPrepared - - NotUsed(Useas00conditions)46 EA NotPrepared - - NotUsed(Useas00conditions)

47 Eb FanOperationControlduring CoolingThermo-OFF

000102

NotAvailableSLOWSLOW

48 EC NotPrepared - - NotUsed(Useas00conditions)49 Ed NotPrepared - - NotUsed(Useas00conditions)50 EE NotPrepared - - NotUsed(Useas00conditions)51 EF NotPrepared - - NotUsed(Useas00conditions)52 F0 NotPrepared - - NotUsed

SM-16006-rev.1 5-19




53 F1

AutomaticOFFTimerSetting

*Donotsetthefunctions“0C”~“0F”when2(two)wiredcontrollersareusedinthesamecontrollergroup

×

000102••

23240A0B0C0D0E0F

NoFunctionOFFTimerby1hrOFFTimerby2hrs••OFFTimerby23hrsOFFTimerby24hrsOFFTimerby30min.OFFTimerby90min.OFFTimerby40min.OFFTimerby45min.OFFTimerby50min.OFFTimerby55min.

Donotsetthemwhentwowiredcontrollersareused.

54 F2 WiredControllerMain-SubSetting × 0001

MainSub

55 F3 AutomaticResetofSettingTemperature(*1) × 00

01NotAvailableAvailable

56 F4 AutomaticResetTime ×00010203

30min.(Factory-Setting)15min.60min.90min.

57 F5 AutomaticResetTemperatureforCooling(*2) ×

66(19)68(20)70(21)72(22)74(23)76(24)77(25)78(26)80(27)82(28)84(29)86(30)

66oF(19oC)68oF(20oC)70oF(21oC)72oF(22oC)74oF(23oC)76oF(24oC)77oF(25oC)(Factory-Setting)78oF(26oC)80oF(27oC)82oF(28oC)84oF(29oC)86oF(30oC)

58 F6 AutomaticResetTemperatureforHeating(*3) ×

62(17)64(18)66(19)68(20)70(21)72(22)74(23)76(24)77(25)78(26)80(27)82(28)84(29)86(30)

62oF(17oC)64oF(18oC)66oF(19oC)68oF(20oC)70oF(21oC)(Factory-Setting)72oF(22oC)74oF(23oC)76oF(24oC)77oF(25oC)78oF(26oC)80oF(27oC)82oF(28oC)84oF(29oC)86oF(30oC)

59 F7OperationStoppagePreventionbyWiredControllerOperationalError(*4)

× 0001


60 F8 LockFunctionforOperationModeSelection × 00

01NotAvailableAvailable(Factory-Setting)

61 F9 LockFunctionforTemperatureSetting × 00

01NotAvailableAvailable(Factory-Setting)

62 FA NotPrepared - - NotUsed(Useas00conditions)63 Fb NotPrepared - - NotUsed(Useas00conditions)

5-20 SM-16006-rev.1




64 FC CoolingLowerLimitforSettingTemperature(*2) ×

0001020304050607080910

66oF(19oC)68oF(20oC)70oF(21oC)72oF(22oC)74oF(23oC)76oF(24oC)77oF(25oC)78oF(26oC)80oF(27oC)82oF(28oC)84oF(29oC

65 Fd HeatingUpperLimitforSettingTemperature(*3) ×

00010203040506070809101112

86oF(30oC)84oF(29oC)82oF(28oC)80oF(27oC)78oF(26oC)77oF(25oC)76oF(24oC)74oF(23oC)72oF(22oC)70oF(21oC)68oF(20oC)66oF(19oC)64oF(18oC)

66 FE NotPrepared - - NotUsed(Useas00conditions)67 FF NotPrepared - - NotUsed(Useas01conditions)68 H1 NotPrepared - - NotUsed(Useas00conditions)

69 H2 IndicationofHotStart × 00 01

IndicationNoIndication

70 H3 NotPrepared - - NotUsed(Useas00conditions)71 H4 NotPrepared - - NotUsed(Useas00conditions)72 J1 NotPrepared - - NotUsed(Useas00conditions)73 J2 NotPrepared - - NotUsed(Useas01conditions)

74 J3 RunIndicatorColor × 00 01

GreenRed

75 J4 NotPrepared - - NotUsed(Useas00conditions)76 J5 NotPrepared - - NotUsed(Useas00conditions)77 J6 NotPrepared - - NotUsed(Useas00conditions)78 J7 NotPrepared - - NotUsed(Useas00conditions)

79 J8 Eco-operation(*5) × 00 01


80 J9 NotPrepared - - NotUsed(Useas00conditions)81 JA NotPrepared - - NotUsed(Useas00conditions)82 Jb NotPrepared - - NotUsed(Useas00conditions)83 K1 NotPrepared - - NotUsed(Useas00conditions)84 K2 NotPrepared - - NotUsed(Useas00conditions)85 K3 NotPrepared - - NotUsed(Useas00conditions)86 K4 NotPrepared - - NotUsed(Useas00conditions)87 K5 NotPrepared - - NotUsed(Useas00conditions)88 K6 NotPrepared - - NotUsed(Useas00conditions)89 K7 NotPrepared - - NotUsed(Useas00conditions)90 K8 NotPrepared - - NotUsed(Useas00conditions)91 K9 NotPrepared - - NotUsed(Useas00conditions)92 KA NotPrepared - - NotUsed(Useas00conditions)93 L1 NotPrepared - - NotUsed(Useas00conditions)94 L2 NotPrepared - - NotUsed(Useas00conditions)

SM-16006-rev.1 5-21


NOTES:1. Waitatleast3minutesfrominitialpowerONtochangetheoptionalsetting.2. Recordthesettingconditionsforeachoptionalsettinginthe"Setting"columnofthetable.3. Theaboveoptionalfunctionswith“X”markattheindividualsettingcanchangetheconditiononlywhen“All

Rooms”isselectedintheTestRunMenu>FunctionSelectionMenu.

*1): Incasethatthesettemperatureischangedandthetemperatureiskeptforaspecifictimesetby“F4”,itautomaticallychangestothetemperaturesetby“F5”or“F6.”(Incasethatthesettemperatureof“F5”and“F6”isoutofrange,theupperorlowerlimittemperatureisapplied.)

*2): Applicabletofan,coolinganddryoperationmodes.*3): Applicabletoheatingoperationmode.*4): Operationisstoppedbypressingthe“ ”(On/Off)buttonfor3seconds.*5): Whentheunitisrestartedbythewiredcontroller,thetemperatureautomaticallychangestothesetting

temperatureof“F5”or“F6”.



95 L3 NotPrepared - - NotUsed(Useas00conditions)96 L4 NotPrepared - - NotUsed(Useas00conditions)97 L5 NotPrepared - - NotUsed(Useas00conditions)98 L6 NotPrepared - - NotUsed(Useas00conditions)99 L7 NotPrepared - - NotUsed(Useas00conditions)

100 L8 NotPrepared - - NotUsed(Useas00conditions)101 L9 NotPrepared - - NotUsed(Useas00conditions)102 LA NotPrepared - - NotUsed(Useas00conditions)103 Lb NotPrepared - - NotUsed(Useas00conditions)

104 P1 SettingTemperature × 00 01

Every1oF(0.5oC)Every2oF(1oC)

105 P2 NotPrepared - - NotUsed(Useas00conditions)

106 P3 ThermistorSelection ×00010203

InletAirThermistorOutletAirThermistorThermistorofWiredControllerRemoteSensor

107 P4 DisplayofThermistorTemperature × 0001


108 P5 SettingTemperatureDisplayduringFanOperation × 00

01DisplayedUndisplayed

109 P6 ECOButtonOperation × 0001

AvailableNotAvailable

110 P7 MenuButtonOperation × 00 01


111 P8 NotPrepared - - NotUsed(Useas00conditions)112 P9 NotPrepared - - NotUsed(Useas00conditions)113 PA NotPrepared - - NotUsed(Useas00conditions)114 Pb NotPrepared - - NotUsed(Useas00conditions)115 PC NotPrepared - - NotUsed(Useas00conditions)

5-22 SM-16006-rev.1


(3) Not Prepared (b3) (4) Change of Filter Cleaning Time (b4)

Theperiodbeforefiltersignindicationissetaccordingtoindoorunitmodelbeforeshipment. Thefiltersign(“FLTR”onwiredcontroller)isindicatedaccordingtothefiltercleaningtime(FactorySetting).However,thisfiltercleaningtimecanbechangeddependingontheconditionofthefilterasshowninthetablebelow.

Periodfor FilterSignIndication

Approx. 1,200hrs.

Approx. 100 hrs.

Approx. 1,200hrs.

Approx. 2,500hrs. NoIndication

LiquidCrystalDisplayonWiredController

00(FactorySetting) 01 02 03 04

NOTE: While“ControlbyExternalInput”isvalid,thefiltersignwillbe“NoIndication”iftheexternalinputisdisconnected.

(5) Fixing of Operation Mode (b5) Thisfunctionisutilizedwhentheoperationmodeisnotrequiredtobechanged. Whenthisfunctionisvalid,thesetoperationmodecannotbechangedbythewiredcontroller.

(6) Fixing of Setting Temperature (b6) Thisfunctionisutilizedwhensettingtemperatureisnotrequiredtobechanged. Whenthisfunctionisvalid,thesettingtemperaturecannotbechangedbythewiredcontroller.

(7) Fixing of Operation as Exclusive Cooling Unit (b7) Thisfunctionisutilizedwhenexclusivecoolingoperationisrequired. ThisfunctioninvalidatestheheatingoperationandtheautomaticCOOL/HEAToperation,astheoperationofexclusivecoolingunit.

5.4.2.2 DescriptionofFunctionSelectionItem

(1) Setting of Connected Outdoor Unit Type (b1) ThisfunctionisutilizedtoprotectcompressorfromincreaseofPsduringoperation(especiallyhighloadcoolingoperation). ThepreventionconditionforincreaseofPscanbechangeddependingontheconnectedoutdoorunittypeasshowninthetablebelow.

(2) Constant Air Volume Mode (b2) Thisfunctionisutilizedtointakeconstantamountofairvolume.Thesupply/exhaustairvolumecanbebalancedwithoutinterventionofhotstartcontrolduringheatingoperationandfan-stopcontrolduringdefrostingoperation.

ItemCode SettingConditionb2 01

NOTES:1. Thecoldairmaybedischargedespeciallyintheheatingseasonduringdefrostingoperationand

hotstartisperformed.Payattentiontothedirectionoftheairoutletatthetimeofinstallationandexplaintothecustomerwhythisisnecessary.

2. Thefunctionof(b2)isdifferentfrom(b9)"FixingofFanSpeed". Payattentiontothisdifferencewhenyousetthefunction.

SettingCondition OutdoorUnit Contents

00(FactorySetting) -

Ps˃160psi(1.1MPa) →ForcedincreaseofcompressorfrequencyPs≥189psi(1.3MPa)→IndoorunitforcedthermoOFF(Restartautomaticallyin3minute)

01 VRF ((H,Y)VAH(P,R)***B(3,4)1**)

Ps≥203psi(1.4Mpa)→IndoorunitforcedthermoOFF(Restartautomaticallyin3minutes)

02~04 - NotAvailable

NOTES:1. Set"00"or"01"accordingtotheconnectedoutdoorunittoavoidmalfunction.2. Thesettingcondition"02"to"04"isforpreliminarysetting.

Donotusethesettingnumbers.

SM-16006-rev.1 5-23


(8) Automatic COOL/HEAT Operation (b8) Thisfunctionisutilizedtochangecoolingandheatingoperationautomatically(thesameoperationmodeforindoorunitsinthesamerefrigerantcycle). Thisfunctionisinvalidwhentheoutdoorunitiscooling-onlymodelorthefunctionof“FixingofOperationasExclusiveCoolingUnit”isvalid.

(9) Fixing of Fan Speed (b9) Thisfunctionisutilizedtofixthefanspeed. Whenthisfunctionisvalid,thefanspeedcannotbechangedbythewiredcontroller.

(10) Not Prepared (bA)(11) Cooling Temperature Compensation due to Uneven Heat Load (bb)

Thisfunctionisutilizedtoprovidethelongercoolingoperationtimethanthestandard. Whenthisfunctionisvalid,Thermo-ON/OFFiscontrolledunderthelowertemperatureconditionsthanthesettingtemperature(theindicatedvalue)ofthewiredcontroller.

(12) Not Prepared (bC)(13) Not Prepared (bd)(14) Not Prepared (bE)(15) Not Prepared (C1)(16) Not Prepared (C2)(17) Not Prepared (C3)(18) Not Prepared (C4)

SettingTemperatureforRoomTemperatureControlduringCoolingSettingCondition ActualControlTemperature00(Standard) WiredControllerSettingTemperature(IndicatedValue)

01 WiredControllerSettingTemperature(IndicatedValue)-2oF(-1oC)02 WiredControllerSettingTemperature(IndicatedValue)-3oF(-2oC)

NOTE: Theminimumsettingtemperatureaftercorrectionis66oF(19oC).

(19) Operation Mode for Outlet Air Temperature Correction (Only for Outlet Air Temperature Control Mode) (C5) Thisfunctionisutilizedtocontrol B actualoutletairtemperatureclosertosettingtemperaturebyC wiredcontrollerbasedondetectedtemperatureby A outletairthermistor. Thedetectedtemperatureby A outletairthermistorisslightlyadjustedatthetimeofshippingassumingthermallossatD outletairsideducttobring B actualoutletairtemperatureclosertosettingtemperaturebyC wiredcontroller. However B actualoutletairtemperaturemaybeintervenedbyactualinstallationcondition(D outlet airsideductlength,material,etc.).Inthiscase B actualoutletairtemperatureiscorrectable.

Heat Exchanger Fan

Inlet (Flesh Air)

Outside Air Processing Air Conditioner

Ceiling

Discharge

Outlet Air ThermistorA

Outlet Air Side DuctD

Actual Outlet Air TemperatureBWired ControllerC

Actual Outlet Air Temperature + a = B Wired ControllerC

5-24 SM-16006-rev.1


(20) Not Prepared (C6)(21) Canceling of Enforced 3 Minutes Minimum Operation Time of Compressor (C7)

Thecompressoroperationisenabledforaminimumof3minuteswhenoperationisstartedbythe"Enforce3MinutesMinimumOperationTimeofCompressor".Thisfunctionisutilizedtocancelthefunction“Enforced3MinutesMinimumOperationTimeofCompressor”(Enforced3MinutesCompressorGuard).

NOTE: Thecompressoroperationisstoppedimmediatelyasfollowingconditions.

Theprotectiondeviceisactivated. Theoperationstopbuttonispressed.

OperationModeSelectionItemCode Setting OperationModetoCorrect

C500(FactorySetting) Cooling/Heating(SamecorrectionValue)

01 Cooling02 Heating

NOTE:ThecorrectionvalueforCoolingandHeatingisthesame.

CorrectionValueSelection

ItemCode Settinga

NOTECooling Heating

d7

00(FactorySetting) NoCorrection NoCorrection -01 +3oF (+2oC) -3oF (-2oC) Reduce

Cooling/Heating Capacity

02 +7oF (+4oC) -7oF (-4oC)03 +11oF (+6oC) -11oF (-6oC)04 -3oF (-2oC) +3oF (+2oC)

Increase Cooling/Heating Capacity

05 -7oF(-4oC) +7oF(+4oC)06

-11oF(-6oC) +11oF(+6oC)07

SettingExampleOperationMode:CoolingC WiredControllerSettingTemperature:72oF(22oC)B ActualOutletAirTemperature:78oF(26oC)Phenomenon:Temperature B is 7oF(4oC)belowthetemperatureCAssumedCause:ThetemperatureintheD OutletAirSideDuctmayincreasebecause

thetemperatureabovetheceilingincreasesduringsummertime.Setting:Set"01"foritemcode"C5"andset"05"atitemcode"d7"

NOTES:1. Thisfunctionmaynotbeeffectiveduetooutsidetemperatureandoperationcondition.2. TheDetectedTemperatureby A OutletAirThermistorisslightlyadjustedsothattheequation

B ActualOutletAirTemperature=DetectedTemperatureby A OutletAirThermistor isnotalwaysthecase.Payattentionwhereandwhenyoucheckthedata.

SM-16006-rev.1 5-25


SettingCondition

Logic ofContact Sequence

Activation

00 A Contact Normal ForcedStoppage

01 B Contact NormalForcedStoppage

Contact "Close"Contact "Open"

IndoorPCB

IndoorPCB

(23) Not Prepared (C9)(24) Not Prepared (CA)(25) Selection of Forced Stoppage Logic (Cb)

Thisfunctionisutilizedtoselectthelogicofthecontactforforcedstoppagesignalinput. Thesettingconditionandthelogicofthecontactareasshownbelow.

(26) Not Prepared (CC)

(22) Selection of Thermistor for Indoor Temperature (C8) Forindoortemperaturedetection,selectfrom(a)~(c)listedbelowaccordingtotheinstallationtype.

(a)RemoteSensor Connectremotesensor(Nochangeforsettingisrequired).

(b)RemoteThermistorBuiltinOptionalWiredController Connectwiredcontrollertotheunitandselect"FunctionSelection"asshownbelow.

(c)CombinationofRemoteSensorandRemoteThermistorBuiltinOptionalWiredController Connectremotesensorandoptionalwiredcontrollertotheunit.Select“FunctionSelection”menu byoptionalwiredcontrollerasshownbelow.

NOTE: Itworksbycalculatingtheaverageofthetwodifferenttemperaturesbetweentheremotethermistorbuiltinoptionalwiredcontrollerandremotesensor.

ItemCode SettingC8 00(FactorySetting)

ItemCode SettingC8 01

ItemCode SettingC8 02

(27) Change of Control Mode (Cd) Settingforindoorunitandoutdoorunitisrequiredforchangingthecontrolmode(Indoortemperaturecontrol↔Outletairtemperaturecontrol).Referthetablebelowforthesetting.(Refertotheinstallationmanualformoredetail.)

Setting

Unit

ContentsIndoorTemperatureControl

(FactorySetting) OutletAirTemperatureControl

IndoorUnit

WiredControllerFunctionSelection

Cd:00and

IndoorUnitDIPSwitch8-3:OFF

WiredControllerFunctionSelection

Cd:01or

IndoorUnitDIPSwitch8-3:ON

OutdoorUnit

DOASOnlyOutdoorUnit

FunctionSelectionFT:0

OutdoorUnitFunctionSelection

FT:2DOAS

+OtherStandardIndoorUnit

NoSettingRequired NotAvailable

NOTE:Ifthesettingcombinationbetweenindoorunitandoutdoorunitisnotcorrect,theoperationfail.

5-26 SM-16006-rev.1


(30) Not Prepared (d1)(31) Not Prepared (d2)

(28) Not Prepared (CE)

CFSetting Thermo-On/OFF

00

68(20)

70(21)

74(23)

110(43)

Fan

Thermo-OFF

Thermo-ON

Inlet Air Temperature (oF (oC))

01Thermo-ONFan

Thermo-OFF


68(20)

74(23)

78(25)

110(43)

02 Fan

Thermo-OFF

Thermo-ON

68(20)

78(26)

82(28)

110(43)


NOTE:Evenifthefunctionisset,thermo-OFForstoppagemayhappenifthetemperatureexceedstherangelimitforoperation.

(29) Temperature Correction for Thermo-ON/OFF (Only for Outlet Air Temperature Control Mode) (CF) ThecorrectionforThermo-ON/OFFtemperatureisavailableforeachusagecondition. Thisfunctionisutilizedtopreventeasyshifttothermo-ONoperationatthetimeofinlettemperaturegettingclosertothewiredcontrollersettingtemperatureandavoidinefficientoperation.

OperationMode Thermo-ONCondition Thermo-OFFConditionCooling InletTemp.≥SettingTemp.+2oF(1oC)+a InletTemp.≤SettingTemp.-2oF(1oC)+aHeating InletTemp.≤SettingTemp.-2oF(1oC)+a InletTemp.≥SettingTemp.+2oF(1oC)-a

ItemCode Setting a

CF00(FactorySetting) 0oF(0oC)

01 3oF(2oC)02 9oF(5oC)

ExampleatCoolingOperation(WiredControllerSettingTemperature=72oF(22oC))

WiredControllerSettingTemperature=72oF(22oC)

SM-16006-rev.1 5-27


(32) Power Supply ON/OFF 2 (Restarting Function After Power Failure) (d3) Thisfunctionisutilizedtorestarttheunitoperationautomaticallywhenthepowersupplyisrestoredafterthepowerfailureover2seconds.Incaseofthepowerfailurefor2secondsorless,thestandardunitretainsalltheoperationfunctionsandrestartstheoperationautomatically.(Thecompressorrestartsoperationafter3minutesguardinadditiontopowerfailuretimeforupto2seconds.) Whenthisfunctionisutilizedintheconditionthatthereisnopersontooperatetheunit,monitorthesystemforpotentialunitfailure.

NOTES:1. Ifpowerfailureoccursduringthestoppageoftheunit,theunitremainsstoppedafterthepower

supplyisrestored.2. Whenthecompressordoesnotreachthefixedtemperature,thesystemmaynotrestart

automaticallyafterturningonthepowersupplybyhot-startcontrol. *Hot-startControl: Thecontrolprogramthatdoesnotoperatethecompressorevenafterthe poweristurnedONifthecompressordoesnotreachthefixedtemperature.

(33) Prevention for Cooling Discharge Air Temperature Decrease (d4) ThisfunctionisutilizedtopreventdischargeairtemperaturedecreaseduringthecoolingoperationbycontrollingThermo-ON/OFFaccordingtothedischargeairtemperature.

Thermo-ON: COOL/DRYoperationscontinuefor3minuteswhendischargeairtemperatureat52oF(11oC)orlower.

Thermo-OFF: Theroomtemperaturereachesthesettingtemperaturewhendischargeairtemperatureat56oF(13oC)

orhigher.(34) Not Prepared (d5)(35) Not Prepared (d6)

(36) Outlet Air Temperature Correction (Only for Outlet Air Temperature Control Mode) (d7) RefertoSection5.4.2.2"(19)OperationModeforOutletAirTemperatureCorrection(C5)"fordetails.

5-28 SM-16006-rev.1


(37) Thermo-ON/OFF Control (Only for Indoor Temperature Control Mode) (E1) Thermo-ON/OFFcontrolisavailableforeachinstallationsituationandusagesituation.

(a)ItemCode Setting

E1 00(FactorySetting)

OperationMode Thermo-ONCondition Thermo-OFFCondition

Cooling InletTemp.≥SettingTemp.+2oF(+1oC)DetectedIndoorTemp.≤SettingTemp.

andInletTemp.≤SettingTemp.

Heating InletTemp.≥SettingTemp.-2oF(-1oC)DetectedIndoorTemp.≥SettingTemp.

andInletTemp.≥SettingTemp.

(b)ItemCode Setting

E1 01


CoolingDetectedIndoorTemp.≥SettingTemp.

orCoolingConditionShownBelow

DetectedIndoorTemp.≤SettingTemp.and

CoolingConditionShownBelow

HeatingDetectedIndoorTemp.≤SettingTemp.

orHeatingConditionShownBelow

DetectedIndoorTemp.≥SettingTemp.and

HeatingConditionShownBelow

(c)ItemCode Setting

E1 02


Cooling DetectedIndoorTemp.≥SettingTemp. DetectedIndoorTemp.≤SettingTemp.

Heating DetectedIndoorTemp.≤SettingTemp. DetectedIndoorTemp.≥SettingTemp.

˂ExampleofEffectiveness˃ComparisonunderThermo-OFFconditionatCoolingOperation

Setting"00"→Thermo-OFFstartsafterroomtemperatureandinletairtemperaturereachesthe wiredcontrollersettingtemperature.

Setting"01"→Thermo-OFFstartsafterroomtemperaturereachesthewiredcontrollersetting temperatureandinletairtemperaturestayswithin+9oF(+5oC)ofwiredcontroller settingtemperature.

Setting"02"→Thermo-OFFstartsafterroomtemperaturereachesthewiredcontrollersetting temperature(Nointervenebyinletairtemperature).

9 (5) 3 (2) 3 (2) 24 (15)

Thermo-ON

Thermo-OFF

Setting Temp. Setting Temp.+ 9 (5)

Inlet Temp.(oF (oC))

Cooling Thermo-ON/OFF

Thermo-ON

Thermo-OFF

Setting Temp.- 24 (15)

Setting Temp. Inlet Temp.(oF (oC))

Heating Thermo-ON/OFF

SM-16006-rev.1 5-29


(38) Performance Restraint Control (Only for Indoor Temperature Control Mode) (E2) Controltheoutputtransmittingtooutdoorunitandrestraincoolingoperation(operateinlowerfrequency)*1.

Thecompressorfrequencyisdeterminedbyoutdoorunitaccordingtotherefrigeratingcycleandindoorunitcapacityaswellaseachtemperatureandsettingvolume. Reducecompressorfrequencybychangingthetransmittingoutput.

CompressorFrequency=-SettingTemp.x

(*1):Thecompressorfrequencymaynotbelowerbecauseofrefrigeratingcycleconditionorotherfactor.

NOTE: Thewiredcontrollercheckingdatadoesnotchangeeventhe"PerformanceRestraintControl"isset. Howevertheoutdoorunitsevensegmentcheckingdataortheservicecheckerdatachanges.Payattentionatthetimeofservice.

DetectedIndoorTemp.+OutletAirTemp.

2

RefrigeratingCycle,IndoorUnitCapacity,SettingAirVolume

( )Thisitembecomesonlythereminderofsubtractionof"SettingTemp."from"DetectedIndoorTemp."ifsetE2"01"

Thecompressorfrequencybecomeslowerastheindoortemperaturebecomessatisfiedthesettingtemperaturebytheotherairconditioner.(*1)

SettingOutput

ItemCode Setting ItemCode SettingE2 00(FactorySetting) E2 01

IndoorInletAirTemp. OutletAirTemp. DetectedIndoorTemp.RemoteSensor DetectedTemp. DetectedIndoorTemp. -

SettingAirVolume HIGH HIGH

NOTES:1. The"DetectedIndoorTemperature"mentionedaboveindicateseitheroneofthedetected

temperatureof"RemoterSensor","RemoteThermistorBuiltinOptionalWiredController"oraverageof"RemoterSensor"and"RemoteThermistorBuiltinOptionalWiredController"form(22)"SelectionofThermistorforIndoorTemperature(C8)"

2. ThefrequentcompressorON/OFFmayhappendependingontheinstallationpositionofthesensorespeciallywhensetE1"02".Attentionshouldbepayedfortheinstallationlocation

3. Outsideairfromairinletisdirectlyblowduringthermo-OFF.Attentionshouldbepayedfortheinstallationpositionofairoutletanddirectionofairflow.

4. Evenifthefunctionisset,thermo-OFF(fan)orstoppagemayhappenifexceedoperationrangelimit.

5-30 SM-16006-rev.1


(40) Not Prepared (E4)(41) Not Prepared (E5)(42) Indoor Fan Operation Time After Cooling Operation Stoppage (E6)

Thisfunctionisutilizedtopreventcondensationuponcoolingoperationstoppageby“SLOW”indoorfanoperationtodry.“SLOW”operation(for60minutesor120minutesbysetting)continuesevenwhenthecoolingoperationisstopped.

(43) Not Prepared (E7)(44) Not Prepared (E8)(45) Not Prepared (E9)(46) Not Prepared (EA)(47) Fan Operation Control during Cooling Thermo-OFF (Eb)

ThisfunctionisutilizedtopreventdiffusionofodorandhighhumiditybyreducingtheindoorfanspeedduringcoolingThermo-OFF.

SettingCondition FanOperationduringThermo-OFF00 OperationatSetFanSpeed01 SLOW02 SLOW

(39) Hot Start Control (E3) ThisfunctionisutilizedtosuppresscoldairblowingatthetimeofheatingoperationstartupbychangingthehotstartcontrolatthetimetheheatingoperationisONorthedefrosteroperationisOFF.

SettingE3to"01"suppresses,thecoldairblowingatthetimeofheatingoperationstartup canbesuppressed.Howevertheinletairblowsatthetimeofthermo-OFF.Payattentiontotheinstallationdirectionandpositionattheinstallationlocation.

NOTES:1. Ifset(2)"ConstantAirVolumeMode"(b2)"01",theoutletairvolumeisalways"HIGH".

(Eveniftheinletairtemperaturebecomeslowerthantheheatingoperationlowerlimit (20oF(-7oC).)

2. AirvolumedoesnotchangeevenaftertheoutletairtemperaturedecreasestoSLOWorHIGH.

( )Setting

InletAirTemp.ItemCode Setting ItemCode Setting

E3 00(FactorySetting) E3 01~50oF(10oC) FanStop

FanStop50oF(10oC)~59oF(15oC) SLOW

59oF(15oC)~ HIGH HIGH

SM-16006-rev.1 5-31


(54) Wired Controller Main-Sub Setting (F2) Thisfunctionisutilizedwhentwowiredcontrollerareinstalledinonesystem. Setonewiredcontrollertomain“00”,theotherwiredcontrollertosub“01”.

<ExampleforCIW01>SettingCondition SettingPeriodforOFFTimer

00 Invalid01 1 hour02 2 hoursM M

23 23 hours24 24 hours0A 30minutes0B 90minutes0C 40minutes0D 45minutes0E 50minutes0F 55minutes

NOTES:1.Thisfunctionisnotavailablewhentheunitiscontrolledbythecentralizedcontroller,theremotecontrolconnectingwithCentralControllers.

2.TherangeofsettingperiodforOFFtimerdiffersdependingonthewiredcontrollermodel.

(48) Not Prepared (EC)(49) Not Prepared (Ed)(50) Not Prepared (EE)(51) Not Prepared (EF)(52) Not Prepared (F0)(53) Automatic OFF Timer Setting (F1)

ThisfunctionisutilizedtosettheOFFtimerfunctionautomaticallywhentheunitisoperatedbythewiredcontroller.DuringtheoperationwiththeautomaticOFFtimersettingfunction,thecancellationoftheOFFtimerandthechangingofthesettingperiodforOFFtimercannotbeperformed. However,theOFFtimerfunctioniscanceledwhentheunitisstopped.Whentheunitisoperatedagainafterstoppage,thesettingperiodforOFFtimerissetbytheoptionalsetting. ThesettingconditionandthesettingperiodforOFFtimerareshownbelow.

5-32 SM-16006-rev.1


SettingCondition SettingTemperatureforAutomaticReset66(19) 66oF(19oC)68(20) 68oF(20oC)70(21) 70oF(21oC)72(22) 72oF(22oC)74(23) 74oF(23oC)76(24) 76oF(24oC)77(25) 77oF(25oC)(Factory-Setting)78(26) 78oF(26oC)80(27) 80oF(27oC)82(28) 82oF(28oC)84(29) 84oF(29oC)86(30) 86oF(30oC)

(56) Automatic Reset Time (F4) Thisfunctionisutilizedtosettheautomaticresettimewiththesettemperature. Thesettingconditionsandautomaticresettimeareasfollows:

(55) Automatic Reset of Setting Temperature (F3) Thisfunctionisutilizedtoeconomizetheoperation.Whenthisfunctionisvalid,inthecasethatthesettemperatureisnotchangedforcertainperiodoftimebythefunction(56)“AutomaticResetTime(F4)”,thesettemperatureautomaticallyreturnsto(57/58)“AutomaticResetTemperatureforCooling/Heating(F5/F6)”asfollowingconditions.Itiseffectivetooptimizethesettingtemperatureandprovideenergysaving.However,thesettingtemperatureisnotautomaticallyresetinthecasethat“AutomaticCOOL/HEATOperation”mode,or“ProhibitingOperationbyWiredController”issetbythecentralizedcontroller.

<Example>AutomaticResetTemperatureforCoolingis77oF(25oC)

(57) Automatic Reset Temperature for Cooling (F5) ThisfunctionisutilizedtosettheautomaticresettemperatureforFAN/COOL/DRYoperation. Thesettingconditionsandtheautomaticresettemperatureforcoolingareasfollows:

Setting temperature ischanged from 77 to 68oF(25 to 20oC) by the wired controller.

Cooling operation at 68oF(20oC) is performed temporarily.

If no operation for a definedperiod, the setting temperaturereturns to 77oF (25oC) automatically.

OK

Menu

Back/Help ECOOn/Off

A/C

MODE SPEED TEMP

COOL

LOUV. Adj.

Meeting RoomLOUV.

FLTR

OK

Menu

Back/Help ECOOn/Off

A/C

MODE SPEED TEMP

COOL

LOUV. Adj.

Meeting RoomLOUV.

FLTR

OK

Menu

Back/Help ECOOn/Off

A/C

MODE SPEED TEMP

COOL

LOUV. Adj.

Meeting RoomLOUV.

FLTR

SettingCondition AutomaticResetTimeofSettingTemperature00 30minutes(Factory-Setting)01 15minutes02 60minutes03 90minutes

SettingTemperature Change

Return to (57) Automatic ResetTemperature for Cooling

Return to (58) Automatic ResetTemperature for Heating

Operation Mode * COOL * DRY * FAN

Operation Mode * HEAT Setting

Temperature Change

(56) Automatic Reset Time

SM-16006-rev.1 5-33


(58) Automatic Reset Temperature for Heating (F6) ThisfunctionisutilizedtosettheautomaticresettemperatureforHEAToperation. Thesettingconditionsandtheautomaticresettemperatureforheatingareasfollows:

(59) Operation Stoppage Prevention by Wired Controller Operational Error (F7) Thisfunctionisutilizedtopreventtheaccidentaloperationalstoppagecausedbyinadvertentlypressing“ ”(ON/OFF)onthewiredcontroller.Whenthisfunctionisvalid,theoperationisstoppedbypressing“ ”(ON/OFF)buttononthewiredcontrollerformorethan3seconds.However,theenablingmethodisnotchanged.

Operation Lock (60) and (61)Fouroperationlockfunctionsareavailableasshownbelow.Thesefunctionsareutilizedtorestricteachswitchoperationfromthewiredcontroller.Whenthesefunctionsarevalid,modificationofeachfunctionisprohibited.Alloperationlockfunctionsarevalid(“01”setting)beforeshipment.

Eachswitchoperationbecomesunavailablebypressing“ ”and“Back/Help”(return)buttonssimultaneouslyformorethan3secondswhenthesefunctionsaresetas“01”.Theindication“ ”(operationlockindicator)isindicatedonthewiredcontroller.If“ ”and“Back/Help”(return)switchesarepressedsimultaneouslyformorethan3secondsduring“ ”(operationlockindicator)isindicated,“ ”indicationisturnedOFFandeachswitchoperationisavailable.Thesefunctionsaretorestricttheoperationsofthewiredcontrolleronly.Ifoperationisperformedfromthecentralizedcontroller,thecommandfromthecentralizedcontrollerisgivenpriority.

(60) Lock Function for Operation Mode Selection (F8)(61) Lock Function for Temperature Setting (F9)

(62) Not Prepared (FA)(63) Not Prepared (Fb)

SettingCondition SettingTemperatureforAutomaticReset62(17) 62oF(17oC)64(18) 64oF(18oC)66(19) 66oF(19oC)68(20) 68oF(20oC)70(21) 70oF(21oC)(Factory-Setting)72(22) 72oF(22oC)74(23) 74oF(23oC)76(24) 76oF(24oC)77(25) 77oF(25oC)78(26) 78oF(26oC)80(27) 80oF(27oC)82(28) 82oF(28oC)84(29) 84oF(29oC)86(30) 86oF(30oC)

5-34 SM-16006-rev.1


(64) Cooling Lower Limit for Setting Temperature (FC) ThisfunctionisutilizedtolimitthelowestsettingtemperatureforFAN/COOL/DRYoperations. Whenthisfunctionisvalid,itprovidestheappropriatecoolingoperationandenergysaving. Thesettingconditionsandtheminimumsettingtemperatureforcoolingareasfollows:

<Example>

(65) Heating Upper Limit for Setting Temperature (Fd) ThisfunctionisutilizedtolimitthehighestsettingtemperatureforHEAToperation. Whenthisfunctionisvalid,itprovidestheappropriateheatingoperationandenergysaving. Thesettingconditionsandtheheatingupperlimitforthesettingtemperatureareasfollows:

<Example>

SettingCondition Details MinimumSettingTemperature(FAN/COOL/DRY)*

00 StandardValue 66oF(19oC)01 LowerLimit+2oF(LowerLimit+1oC) 68oF(20oC)02 LowerLimit+4oF(LowerLimit+2oC) 70oF(21oC)03 LowerLimit+6oF(LowerLimit+3oC) 72oF(22oC)04 LowerLimit+8oF(LowerLimit+4oC) 74oF(23oC)05 LowerLimit+10oF(LowerLimit+5oC) 76oF(24oC)06 LowerLimit+11oF(LowerLimit+6oC) 77oF(25oC)07 LowerLimit+12oF(LowerLimit+7oC) 78oF(26oC)08 LowerLimit+14oF(LowerLimit+8oC) 80oF(27oC)09 LowerLimit+16oF(LowerLimit+9oC) 82oF(28oC)10 LowerLimit+18oF(LowerLimit+10oC) 84oF(29oC)

*IncaseofStandardUnit

SettingCondition Details SettingTemperatureUpperLimit(HEAT)*

00 StandardValue 86oF(30oC)01 UpperLimit-2oF(UpperLimit-1oC) 84oF(29oC)02 UpperLimit-4oF(UpperLimit-2oC) 82oF(28oC)03 UpperLimit-6oF(UpperLimit-3oC) 80oF(27oC)04 UpperLimit-8oF(UpperLimit-4oC) 78oF(26oC)05 UpperLimit-9oF(UpperLimit-5oC) 77oF(25oC)06 UpperLimit-10oF(UpperLimit-6oC) 76oF(24oC)07 UpperLimit-12oF(UpperLimit-7oC) 74oF(23oC)08 UpperLimit-14oF(UpperLimit-8oC) 72oF(22oC)09 UpperLimit-16oF(UpperLimit-9oC) 70oF(21oC)10 UpperLimit-18oF(UpperLimit-10oC) 68oF(20oC)11 UpperLimit-20oF(UpperLimit-11oC) 66oF(19oC)12 UpperLimit-22oF(UpperLimit-12oC) 64oF(18oC)

*IncaseofStandardUnit

Factory-Setting: "00"(Lower Limit 66+0=66oF (19+0=19oC))

Setting Condition: "06"(Lower Limit 66+11=77oF (19+6=25oC))

66oF(19oC)

86oF(30oC)

86oF(30oC)

77oF(25oC)

Temperature Setting: Available

Setting Temperature at Wired Controller

Temperature Setting: Not Available


Factory-Setting: "00"(Upper Limit 86-0=86oF (30-0=30oC))

Setting Condition: "09"(Upper Limit 86-16=70oF (30-9=21oC))

64oF(18oC)

86oF(30oC)

64oF(18oC)

70oF(21oC)

Setting Temperature at Wired Controller


Temperature Setting: Not Available


SM-16006-rev.1 5-35


(66) Not Prepared (FE)(67) Not Prepared (FF)(68) Not Prepared (H1)(69) Indication of Hot Start (H2)

Whenthisfunctionissetas“NoIndication”(01),“HOT-ST”isnotindicatedonthewiredcontroller.(70) Not Prepared (H3)(71) Not Prepared (H4)(72) Not Prepared (J1)(73) Not Prepared (J2)(74) Run Indicator Color (J3)

Thisfunctionisutilizedtosettherunindicatorcolor.

(75) Not Prepared (J4)(76) Not Prepared (J5)(77) Not Prepared (J6)(78) Not Prepared (J7)(79) Eco-operation (J8)

Thisfunctionisutilizedtoeffectivelyoptimizethesettingtemperatureandprovideenergysaving. Whenthesettingtemperatureischangedduringtheairconditioningoperationandwhiletheoperationisstarted/stoppedbyON/OFFbuttononthewiredcontroller,thesettemperatureautomaticallyreturnsto(57/58)“AutomaticResetTemperatureforCooling/Heating(F5/F6)”asinthefollowingfigure.However,thesettingtemperatureisnotautomaticallyresetinthecasethat“AutomaticCOOL/HEATOperation”mode,or“ProhibitingOperationbyWiredController”issetbythecentralizedcontroller.

SettingCondition Color00 Green01 Red

NOTE: Theredrunindicatorisflashingduringthealarm.

SettingTemperature Change

Return to (57) Automatic ResetTemperature for Cooling

STOP

Return to (58) Automatic ResetTemperature for Heating

Operation Mode * COOL * DRY * FAN

Operation Mode * HEAT Setting

Temperature Change

(80) Not Prepared (J9)(81) Not Prepared (JA)(82) Not Prepared (Jb)(83) Not Prepared (K1)(84) Not Prepared (K2)(85) Not Prepared (K3)(86) Not Prepared (K4)(87) Not Prepared (K5)(88) Not Prepared (K6)(89) Not Prepared (K7)(90) Not Prepared (K8)(91) Not Prepared (K9)(92) Not Prepared (KA)

5-36 SM-16006-rev.1


(93) Not Prepared (L1)(94) Not Prepared (L2)(95) Not Prepared (L3)(96) Not Prepared (L4)(97) Not Prepared (L5)(98) Not Prepared (L6)(99) Not Prepared (L7)

(100) Not Prepared (L8)(101) Not Prepared (L9)(102) Not Prepared (LA)(103) Not Prepared (Lb)(104) Setting Temperature (P1)

Thisfunctionisutilizedtoprovidesettingtemperatureforevery1oF(0.5oC)at"00"andevery2oF(1oC)at"01". Controldifferentialofthermistoralsousesthetemperatureforevery1oF(0.5oC)at"00"andevery2oF(1oC)at"01".

(105) Not Prepared (P2)(106) Thermistor Selection (P3)

Thisfunctionisutilizedtoselectthethermistorwithfunction(107).

SettingCondition Thermistor(Sensor)00 InletAirThermistor01 OutletAirThermistor02 ThermistorofRemoteControl03 RemoteSensor

(107) Display of Thermistor Temperature (P4) Thisfunctionisutilizedtodisplaythetemperatureofthesensorselectedat(106).

(108) Setting Temperature Display during Fan Operation (P5) Thisfunctionisutilizedtoundisplaythesettingtemperatureduringfanmodeoperation.

(109) ECO Button Operation (P6) Thisfunctionisprohibiting"ECO"buttonoperationbysettingat"01"

(110) Menu Button Operation (P7) Thisfunctionisutilizedtoinvalidatethemenubutton.

(111) Not Prepared (P8)(112) Not Prepared (P9)(113) Not Prepared (PA)(114) Not Prepared (Pb)(115) Not Prepared (PC)

SM-16006-rev.1 5-37


5.5 Power Saving Functions from Wired ControllerThepowersavingfunctionsareavailablefromthewiredcontrollerCIW01asfollows.

5.5.2 OutdoorUnitCapacityControlThedemandfunctionsettingcanbecontrolledfromwiredcontroller.Selectfrom“PeakCutControl”and“ModerateControl”accordingtothesituation.

NOTES:1.Thepowersetvalue(%)isjustacriterion.Thepowersetvalueforthisfunctionisdifferentfromtheactualpowervalueinprecision.Usethedemandcontroller(option)whenitisnecessarytomanagethemaximumpowercorrectly.

2.Thecoolingcapacitywillbedecreasedaccordingtothepowersavingsettingvalueforthereducingofcompressormotorrevolution.

3.Theactualelectricalpowerconsumptionmaybehigherthanthevaluedisplayedonthescreenundercertainoperatingconditionsuchasprotectivecontrol.

4.Thisfunctionisusedtoinhibitpowerconsumptionoftheoperating.Donotuseitforminimizethecapacityofcurrentandthevoltageforthepowercircuit,powersourcewiring,GFCI,transformer,etc.Itmaycauseactuationofinterrupterandequipmentfault.

without Power Saving Setting

Maximum Capacity Operation

in Power Saving Set Value Range

Morning NightDaytime

Operation Time

Pow

er

Con

sum

ptio

n Power SavingSet ValueIt can be selected from100%, 90%, 80%, 70%,60%, 50%, and 40% of reference power consumption.

< “Peak Cut Control” Function >Thepeakcutcontrolreducesthepowerconsumptionrangewhenitexceedsthevalueofthepowersavingsetting.

5.5.1 PowerSavingGuidePress“ECO”buttonthenthepowersavingguidewillbedisplayedtosupportthesetting.Easyaccesstotheconfirmationandsettingscreenfromthecurrentsettingstatusscreen.

< “Moderate Control” Function >Themoderatecontrolfunctionadjuststheairconditioningcapacitynottoexceedthevalueofthepowersavingsetting.

without Moderate Control Setting

Moderate Control Setting

Operation Time

Pow

er

Con

sum

ptio

n

NOTES:1.Themoderatecontrolsettingvaluecanbesetfrom40%to100%ofregularcapacityat10%intervals.2.Thesettingvalueisjustacriterion.Itmightbedifferentaccordingtotheactualserviceconditionandoperatingcondition.

5-38 SM-16006-rev.1


5.5.3 RotationControlFunctionTherotationcontrolswitchesmultipleindoorunitoperatingmodetoFANmode(Thermo-OFF)inorderonebyone.

Fan Operation*1

Fan Operation*1

Fan Operation*1

Cooling Operation

Cooling Operation

CoolingOperation

CoolingOperation

Time

Indoor Unit 1

Indoor Unit 2

Indoor Unit 3

Order of Fan Operation

1


2


In3

The indoor unit fan operation is performed in rotation by indoor unit address Nos.

NOTES:1.Thefanmodetimecanbeselectedintheintervalofthreeminutes,fiveminutesandtenminutes.2.Itispossibletochangetherotationassignednumberaccordingtotheminimumdifferentialbetweenthesettingtemperatureandindoortemperature.

5.5.4 IntermittentControlFunctionTheintermittentcontrolrepeatsCooling/HeatingandFan(Thermo-OFF)modeinfixedintervals.

30 Minutes 30 Minutes

Cooling Operation

20 Minutes

Cooling Operation

20 Minutes

Fan Operation

10 Minutes

Fan Operation

10 Minutes

Cooling Operation

17 Minutes

Cooling Operation

17 Minutes

Fan Operation

13 Minutes

Fan Operation

13 Minutes

Cooling Operation

15 Minutes

Cooling Operation

15 Minutes

Fan Operation

15 Minutes

Fan Operation

15 Minutes

Time

SAV: LOW

SAV: MED

SAV: HIGH

NOTE:Thefanmodewillberepeatedintheintervaloffiveminutes(SAV:LOW),tenminutes(SAV:MED)andfifteenminutes(SAV:HIGH)duringheatingoperation.

SM-16006-rev.1 5-39


5.5.5 PowerSavingScheduleFunctionThepowersavingschedulefunctionisutilizedtosetthepowersavingscheduleonindoorunitcapacitycontrolandintermittentcontroluptofivesettingsadayeachdayoftheweek.

The display of Noise Reduction Schedule is the same.

5.5.6 OperationNoiseReductionScheduleFunctionTheoperationnoisereductionschedulefunctionisutilizedtosettheoperationnoisereductionscheduleuptofivesettingsadayeachdayoftheweek.

NOTE:TheoperationnoisereductionsettingmaydecreasestheCooling/Heatingcapacity.

5.5.7 PowerConsumptionDisplayFunctionThisfunctiondisplaysthepowerconsumptionoftheoutdoorunitcompressor.ThevalueofeachdisplayedinGraph/Listformatisoneday,oneweekandoneyear.Thedisplayperiodofconsumptioncomparisoncanbeselectedfromonedaybefore/Todayto1yearago/Thisyear.

NOTE:Thepowerconsumptionforoutdoorunitcompressorwillbedisplayed.

SM-16006-rev.1 6-1

FIELD WORK INSTRUCTIONS

6. Field Work Instructions

6-2 SM-16006-rev.1


6.1 Special Attention Regarding Refrigerant Gas Leakage

Refer to Section 3 “Troubleshooting” when dealing with problems or difficulties.If you cannot solve the problem, contact your distributor or contractor.

Make sure that the entire VRF system meets ASHRAE Standard 15, or any local codes, regarding Safety. The ASHRAE Standard 15-2013 provides safeguards for life, limb, health, property, and prescribes safety requirements. The standard is recognized as the main guide for personal safety involving refrigeration systems. It strives to ensure a safe application of refrigerant systems by limiting the maximum charge as follows so that a complete discharge due to a leak into a small, occupied, and enclosed room can never exceed the allowable limit for the room.

SM-16006-rev.1 6-3


Johnson Controls’ air conditioners are designed and manufactured based on using specified refrigerants. The applicable refrigerants are specified for each unit’s models.

Using any refrigerants besides the specified refrigerants may cause mechanical problems, malfunction, and failure, and in the worst case, it endangers safety seriously and may cause a fire or an explosion. Therefore, Do not charge non-specified refrigerants or any of the following in the refrigerant system of a unit.

* Hydrocarbon Refrigerants such as Propane* Oxygen, or Flammable Gases such as Acetylene * Poisonous Gases

The types of refrigerants are indicated in the Installation and Maintenance Manuals, Engineering Manuals, Service Manuals, and the specification label for each unit. Be aware that Johnson Controls does not take any responsibility for unit failure, malfunction, or any accidents caused by charging non-specified refrigerants or others as noted above.

DANGER

6.2 Modifications of Charging Refrigerants Other than Those Specified by Johnson Controls

6-4 SM-16006-rev.1


6.3 Pre-start Inspection Work

(1) For Outdoor Unit and Indoor Unit(a) Fan and Fan Motor

• Lubrication - All fan motors are pre-lubricated and sealed at the factory. Therefore, no lubricating maintenance is required.

• Sound and Vibration - Inspect for abnormal sounds or vibration.• Rotation - Check that the fan rotates counterclockwise and inspect the rotating speed.• Insulation - Inspect for electrical insulation resistance.

(b) Heat Exchanger • Clogging - Inspect for any accumulated dirt and dust and remove any at regular intervals. As for

an outdoor unit, other obstacles such as growing grass and pieces of paper, which might intercept air flow, should also be removed.

(c) Piping Connection • Leakage - Inspect for refrigerant leakage at piping connections.

(d) Cabinet• Stain and Lubricant - Inspect for any stain or lubricant and remove it, if any.• Securing Screw - Inspect for loose or missing screws and secure or replace as required.• Insulation - Inspect for peeling thermal insulation material on the cabinet and repair it, if any.

(e) Electrical Equipment• Activation - Inspect for abnormal activation of the magnetic contactor, auxiliary relay, or printed

circuit board (PCB).• Line Condition - Pay attention to working voltage, amperage and phase balance.

Inspect for faulty contact caused by loosened terminal connections, oxidized contacts, foreign matter, and other items. Inspect for electrical insulation resistance.

(f) Control and Protective Devices• Setting - Do not readjust the setting in the field.

(2) For Outdoor Unit Only(a) Compressor

• Sound and Vibration - Inspect for abnormal sounds or vibration.• Activation - Check that the voltage drop of the power supply line is within 16% at start and within

2% during operation.(b) Reversing Valve

• Activation - Inspect for any abnormal activating sound.(c) Strainer

• Clogging - Check that there is no temperature difference between the ends.(d) Ground Wiring

• Ground Line - Inspect for continuity to the earth ground.(e) Crankcase Heater

• Activation - Apply power to the outdoor unit(s) at least 12 hours prior to operation of the system for preheating of the compressor oil.

(3) For Indoor Unit Only(a) Air Filter

• Cleaning - Inspect for, and remove, any accumulated dirt and dust and remove according to the “Engineering Manual”.

(b) Drain Pan, Drain-Up Mechanism and Drain Pipe• Drain Line - Inspect and clean the drain line at least twice a year.• Drain-Up Mechanism - Inspect for activation of drain-up mechanism.

(c) Float Switch• Activation - Inspect for activation of float switch.

SM-16006-rev.1 6-5


6.4 Service and Maintenance Record by 7-Segment DisplayService checker is an optional tool that can be used to record following information. Customer’s Name DATE: - -

Outdoor Unit Model (Serial No. ) (Serial No. ) (Serial No. )(1) Operation Mode(2) Test Run Start Time(3) Data Collect Start Time(4) Read Out Data from 7-Segment in Outdoor Unit

Protection Control CodeOperating Capacity

Outdoor Total Connecting Capacity oCPOutdoor Connecting Quantity oAAIndoor Total Connecting Capacity iCPIndoor Connecting Quantity iAARefrigerant System Address GAIndoor Operating Capacity oPTotal Frequency HzAccumulated Operation Time of Unit UJ

Outdoor Unit InformationOutdoor Capacity CAOutdoor Microcomputer Output SC 52C1 52C2 CH1 CH2 20A1 20A2 211 212 52C1 52C2 CH1 CH2 20A1 20A2 211 212

FAN 20B 20C 20F1 20F2 20CHG X1 X2 FAN 20B 20C 20F1 20F2 20CHG X1 X2

Inverter Frequency H1Compressor Running Quantity CCOutdoor Fan Step FoOutdoor Expansion Valve Opening E1

EbDischarge Pressure PdSuction Pressure PsOutdoor Temperature ToDischarge Gas Temperature Td1

Td2Heat Exchanger Liquid Temperature TEHeat Exchanger Gas Temperature TGAutomatic Refrigerant Charge Temperature TCHGas Bypass Temperature TbGInverter Fin Temperature TFiFan Controller Temperature TFFCompressor Running Current A1

A2Fan Running Current AFAccumulated Operation Time of Compressor UJ1

UJ2

Accumulated Operation Time of Compressor (Available for Timer Reset)

cU1cU2

Inverter Stoppage Cause Code iTFan Controller Stoppage Cause Code FT

Indoor Unit InformationIndoor Capacity CAIndoor Expansion Valve Opening iEHeat Exchanger Liquid Temperature TLHeat Exchanger Gas Temperature TGIntake Air Temperature TiOutlet Air Temperature ToIndoor Unit Stoppage Cause Code d1

Mark Description of MarkParts Markin WiringDiagram

Mark Description of MarkParts Markin WiringDiagram

52C1 Contactor of Relay (Y52C1) on O.U. PCB for Inverter Compressor CMC1 FAN - -

52C2Contactor of Relay (Y52C2) on O.U. PCB forConstant Speed Compressor CMC2

20B - -20C - -

CH1 Contactor of Relay (YCH1) on O.U. PCB for Crankcase Heater CH1 20F1 Contactor of Relay (Y20F1) on O.U. PCB for Solenoid Valve SVF1CH2 Contactor of Relay (YCH2) on O.U. PCB for Crankcase Heater CH2 20F2 Contactor of Relay (Y20F2) on O.U. PCB for Solenoid Valve SVF220A1 Contactor of Relay (Y20A1) on O.U. PCB for Solenoid Valve SVA 20CHG - -20A2 - - X1 Contactor of Relay (YX1) on O.U. PCB for Solenoid Valve SVG211 Contactor of Relay (Y211) on O.U. PCB for Reversing Valve RVR1 X2 - -212 Contactor of Relay (Y212) on O.U. PCB for Reversing Valve RVR2 *PCB = Printed Circuit Board

6-6 SM-16006-rev.1


6.5 Service and Maintenance Record by Wired Controller Data Sheet for Checking by Remote Control Switch Time : : : : : I.U. Model I.U. Serial No. I.U. No. / Alarm Code

Check Mode

1

Check Mode

21 • 2 1 • 2 1 • 2 1 • 2 1 • 2

B Temp. Indication Set Temp. b1 - - Inlet Air Temp. b2 g1 Discharge Air Temp. b3 g2 Liquid Pipe Temp. b4 g3 Remote Thermistor Temp. b5 - - Outdoor Air Temp. b6 g4 Gas Pipe Temp. b7 g5 Evaporating Temp. at Heating b8 g6

Control Information b9 g7 Comp. Top Temp. bA g8 Thermo Temp. of Remote Control Switch bb - -

Control Information bC - -C Micro-Computer State Indication

I.U. Micro-Computer C1 - - O.U. Micro-Computer C2 - -

D Stopping Cause State Indication Stopping Cause State Indication d1 - -

E Alarm Occurrence Times of Abnormality E1 - - Times of Power Failure E2 - - Times of Abnormal Transmitting E3 - -

Times of Inverter Tripping E4 - -F Automatic Louver State

Louver Sensor State F1 - -H Pressure, Frequency State Indication

Discharge Pressure H1 g9 Suction Pressure H2 gA Control Information H3 gb Operating Frequency H4 gC

J I.U. Capacity Indication I.U. Capacity J1 - - O.U. Code J2 - - Refrigerant Cycle Number J3 - - Refrigerant Cycle Number J4 - -

L Opening of Expansion Valve I.U. Expansion Valve L1 gd O.U. Expansion Valve 1 L2 gE O.U. Expansion Valve 2 L3 - - O.U. Expansion Valve B L4 - -

SM-16006-rev.1 6-7


Client: Result Installation Date: System No.: Date Checked: Checked by:

P Compressor Condition Indication (Reference) Comp. Current P1 gF Accumulated Operation Time of Comp. P2 - -

g Sensor Condition Indication Motion Sensor Response Rate g1 - - Radiation Sensor Temp. g2 - - Motion Sensor1 Response Rate g3 - - Motion Sensor2 Response Rate g4 - - Motion Sensor3 Response Rate g5 - - Motion Sensor4 Response Rate g6 - - Correcting Set Temp. g7 - -

6-8 SM-16006-rev.1


6.6 Service and Maintenance RecordService and Maintenance Record

No. Check Item Action Judgment1 Is service space sufficient? YES or NO2 Short Circuit of Discharged Air? YES or NO3 Any Heat Influence? YES or NO4 Is ground wiring connected? YES or NO5 Refrigeration Piping GOOD or NOT GOOD6 Fixing of Units GOOD or NOT GOOD

7 Any Damage on External or Internal Surface? YES or NO

8 Checking of Screws and Bolts Tighten them if they are loosened. TIGHTENED or NOT TIGHTENED

9 Tightening of Terminal Screws Tighten all terminal screws with a Phillips screwdriver.

TIGHTENED or NOT TIGHTENED

10 Are compressor terminals tightly fixed?

Check all compressor terminals are tightly fixed. GOOD or NOT GOOD

11 Insulation Resistance

Measure insulation resistance with insulation resistance-meter. Comp. and Fan Motor: greater than 1MW Others: greater than 1MW

GOOD (GREATER) or

NOT GOOD (LESSER)

12 Does drain water smoothly flow? Check for smooth flow by pouring water. GOOD or NOT GOOD

13 Check for leakage at compressor. Check for any leakage. GOOD or NOT GOOD

14 Check for leakage at outdoor heat exchanger. Check for any leakage GOOD or NOT GOOD

15 Check for leakage at indoor heat exchanger. Check for any leakage GOOD or NOT GOOD

16 Check for leakage at reversing valve. Check for any leakage GOOD or NOT GOOD17 Check for leakage at check valve. Check for any leakage GOOD or NOT GOOD18 Check for leakage at accumulator. Check for any leakage GOOD or NOT GOOD19 Check for leakage at strainer. Check for any leakage GOOD or NOT GOOD

20 Check for leakage at electronic expansion valve. Check for any leakage GOOD or NOT GOOD

21 Check for leakage at piping. Check for any leakage GOOD or NOT GOOD22 Check direction of fans. by Viewing or Airflow Volume GOOD or NOT GOOD

23 Voltage among each phase. Check the voltage is within the specified range. GOOD or NOT GOOD

24 Vibration and Sound Check fan, compressor, piping. GOOD or NOT GOOD

25 Activation of Each Operation Mode Check activation of COOL or HEAT, STOP and TEMP. switches. GOOD or NOT GOOD

26 High Pressure Cut-out Switch Check actual activation value. GOOD or NOT GOOD27 Check activation of drain-up mechanism. Check it during cooling operation. GOOD or NOT GOOD28 Indoor Inlet Air Temp. (DB/WB) oF DB/ oF WB29 Indoor Outlet Air Temp. (DB/WB) oF DB/ oF WB30 Outdoor Inlet Air Temp. (DB/WB) oF DB/ oF WB31 Outdoor Outlet Air Temp. (DB/WB) oF DB/ oF WB32 High Pressure Switch psi(G)33 Low Pressure Switch psi(G)34 Operating Voltage V35 Operating Current A36 Instruction for Cleaning of Air Filter to Client DONE or NOT YET37 Instruction for Cleaning Method to Client DONE or NOT YET38 Instruction for Operation to Client DONE or NOT YET

SM-16006-rev.1 6-9


6.7 Saturation Curve for Refrigerant

0

50

100

150

200

250

300

350

400

‐50 ‐25 0 25 50 75 100 125 150

Saturatio

n Pressure (Liquid) [psi (G

)]

R410A

Saturation Temperature (Liquid) [oF]

6-10 SM-16006-rev.1


6.8 Mollier Chart for R410A

ft3 /lb

SERVICE PARTS LIST

SM-16006-rev.1 7-1

7. Service Parts List

SERVICE PARTS LIST

7-2 SM-16006-rev.1

7.1 Outdoor UnitRefer to the Service Manual No. SM-15001.

7.2 Change-Over BoxRefer to the Service Manual No. SM-15001.

SERVICE PARTS LIST

SM-16006-rev.1 7-3

7.3 Indoor Unit

DOAS

SERVICE PARTS LIST(P0160x-01)

Voltage

1 208/230V 60Hz

Q'ty Per Unit

Draw. No. Part No.

(H,Y

)DO

A09

6B21

S

1 Thermistor H7B00027D QU015002 for Air Inlet, THM1 1

2 Thermistor H7B00027B QU015001 for Air Outlet, THM2 1

3 Thermistor H7B00031A QU015007 for Freeze Protection, THM3 1

4 Thermistor H7B00028A QU015005 for Gas Pipe, THM5 1

5 Expansion Valve 17G57447H P24987 2

6 Fan Casing H7C00374A QU037006 with Fan Runner 2

7 Fan Motor H7B03644A QU071015 1

8 Fan Motor H7B03644B QU071016 1

9 Float Switch H7C00035A QU087001 1

10 Drainage Pump H7B03278B QU071017 1

11 Drain Pan Assy H7C00457C QU095008 1

12 Heat Exchange Assy H7B03268D - 1

13 Accessory Kit H7D07939B QX099006 Set of accessories shipped with the unit.(Includes Insulation, Cable Clamp, etc.) 1

No. Part Name

Replacement Part

Remarks

SERVICE PARTS LIST

7-4 SM-16006-rev.1

A

B

C

D

E

F

G

H

J

K

Truss Head Tapping Screw

Round Head Screw

Flat Head Screw

Pan Head Tapping Screw

Hexagon Head Bolt

Stud Bolt

Nut

Washer

Spring Lock Washer

Tooth Lock Washer

NOTE:A protective coating like zinc is applied to iron and steel for unspecified materials like a bolt or screw.

LOCATION OF SERVICE PARTS IN THE UNIT

MODEL: (H,Y)DOA096B21S

For Product Produced in 2018 or later

For Product Produced in 2017 or earlier

SERVICE PARTS LIST

SM-16006-rev.1 7-5

SERVICE PARTS LIST(P0160x-02)

Voltage

1 208/230V 60Hz

Q'ty Per Unit

Draw. No. Part No.

(H,Y

)DO

A09

6B21

S

1 Electrical Box H7B03784A - * 1

2 Printed Circuit Board H17B43416N QU085013 1

3 Printed Circuit Board H7C00344A QU085015 1

4 Terminal Block H7C01790B QU013001 TB1, for Power Supply 1

5 Terminal Block H7C00001A QU013005 TB2, for Communication and Wired Controller 1

6 Noise Filter H7B00167A QU085005 1

7 Fuse H7B03335A QU004006 2

8 Fuse Holder H17B47429A QU004008 1

9 Capacitor H7C00025A QU014008 6μF, 450VAC 2

10 Aux. Relay H7B00272A QU075001 30A, 250VAC 1

11 Transformer H7B00208A QU082001 1

12 Plastic Material H7G00027A - for PCB 12

13 Electrical Box Cover H7C04675A - * 1

14 Electrical Box Assy. H7B03690A - for Product Produced in 2018 or later 1

15 Fuse 17C90851A P27957 EFR1, EFS1 1

16 Conduit Cover H7C06411A - for Product Produced in 2018 or later 1

No. Part Name

Replacement Part

Remarks

*: The shape of the electrical box and electrical box cover are different according to the manufacturing year.The service parts of the electrical box and electrical box cover change to the service parts for the product produced in 2018 or later.Order both service parts of the electrical box and electrical box cover as a set when ordering the service parts of the electrical boxor electrical box cover.

SERVICE PARTS LIST

7-6 SM-16006-rev.1

LOCATION OF SERVICE PARTS IN THE UNIT MODEL: (H,Y)DOA096B21S < Electrical Box >

For Product Produced in 2018 or later

Only for Product Producedin 2018 or later

For Product Produced in 2017 or earlier

service manual - york

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