manual servicio mini split 36
TRANSCRIPT
LG RoomAir ConditionerSERVICE MANUAL
LG
MODELS: LS-C302MMM0LS-C306MMB0/MMM0LS-H306MMM0LS-C362NMD0/NMM0LS-H362NMD0/NMM0LS-C382NMB0/NMM0LS-H382NMB0/NMM0
CAUTION
website http://www.lgservice.com
• BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
2 Room Air Conditioner
Air Conditioner Service Manual
TABLE OF CONTENTSLG Model Name ...............................................................................................................................................3Safety Precautions..........................................................................................................................................4Dimensions .....................................................................................................................................................9
Symbols Used in this Manual .....................................................................................................................9
Indoor Unit..................................................................................................................................................9
Outdoor Unit .............................................................................................................................................10
Product Specifications ................................................................................................................................12Installation .....................................................................................................................................................15
Installation of Indoor, Outdoor unit ...........................................................................................................15
Flaring Work and Connection of Piping....................................................................................................17
Connecting the cable between indoor unit and outdoor unit ....................................................................24
Air Purging ...............................................................................................................................................28
Test Running ............................................................................................................................................30
Operation ......................................................................................................................................................31Main unit Function ...................................................................................................................................31
Display Function.......................................................................................................................................38
Self-diagnosis Function............................................................................................................................38
Name and Function-Remote Control .......................................................................................................39
Disassembly ..................................................................................................................................................40Indoor Unit................................................................................................................................................40
Schematic Diagram.......................................................................................................................................44Wiring Diagram.........................................................................................................................................49
Electric Control device..............................................................................................................................51
Troubleshooting Guide .................................................................................................................................55Refrigeration Cycle Diagram ....................................................................................................................55
Pipe Length and the Elevation .................................................................................................................56
3-way Valve ..............................................................................................................................................57
Cycle Troubleshooting Guide ...................................................................................................................63
Electronic Parts ........................................................................................................................................64
Exploded View ..............................................................................................................................................70Indoor Unit...............................................................................................................................................70
Outdoor Unit ............................................................................................................................................72
Replacement Parts List ................................................................................................................................74Indoor .......................................................................................................................................................74
Outdoor ....................................................................................................................................................77
Service Manual 3
LG Model Name
2004
1 2 - 3 4 5 6 7 8 9 10
Code Type Code of Model Meaning
1 Producing Center, A~Z L: Chang-won R22 N: IndiaRefrigerant A: Chang-won R410A Z: Brazil
C: Chang-won R407C D: IndonesiaT: China M: MexicoK: Turkey R22 V: VietnamE: Turkey R410A S: Out SourcingH: Thailand
2 Product Type A~Z S: Split Type Air Conditioner
3 Cooling/Heating/Inverter A~Z C: Cooling onlyH: Heat pumpX: C/O + E/HeaterZ: H/P + E/Heater
V: AC Inverter C/ON: AC Inverter H/PQ: DC Inverter C/OW: DC Inverter H/P
4, 5 Capacity 0~9 Cooling/Heating CapacityEx. "09" 9,000 Btu/h
6 Electric Range 1~9 1: 115V/60Hz, A: 220V, 50Hz, 3PhaseA~Z 2: 220V/60Hz B: 208~230V, 60Hz, 3Phase
3: 208-230V/60Hz C: 575V, 50Hz, 3Phase5: 200-220V/50Hz D: 440~460, 60Hz, 3Phase6: 220-240V/50Hz E: 265V, 60Hz7: 110V, 50/60Hz F: 200V, 50/60Hz8: 380-415V/50Hz9: 380-415V/60Hz
7 Chassis A~Z Name of Chassis of UnitEx. LSP SP Chassis
8 Look A~Z Look,Color (Artcool Model)
9 Function A~Z
10 Serial No. 1~9 LG Model De
* ARTCOOL COLOR
velopment Serial No.
Basic ABasic+4Way BPlasma Filter CPlasma Filter+4 Way DTele+LCD ETele+LCD+Nano plasma+4Way FNano Plasma F+(A/changeove)+A/clean+Low A GNano Plasma F+(A/changeove)+A/clean+4way+Low A HTele+LED+4way IInternet JPlasma F+4Way+Oxy generator KNano Plasma F+(A/changeove)+A/clean LNano Plasma F+(A/changeove)+A/clean+4way MNano Plasma F+(A/changeove)+A/clean+PTC NNano Plasma F+(A/changeove)+Autoclean+4way+PTC PNano Plasma F+(A/changeove)+A/clean+4way+Low A+PTC QNegative ION+A/Clean R(Nano)Plasma+Negative ION+A/Clean S4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean TNano Plasma F+4Way+(A/changeove)+A/clean+ U
R MirrorW WhiteB BlueD WoodM MetalC Cherry
4 Room Air Conditioner
Safety Precautions
Safety PrecautionsTo prevent injury to the user or other people and property damage, the following instructions mustbe followed. Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
Meanings of symbols used in this manual are as shown below.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
Be sure not to do.
Be sure to follow the instruction.
Do not use damaged power cords, plugs, or aloose socket.
Always use the power plug and socket with theground terminal.
• There is risk of fire of electric shock. • There is risk of electric shock.
Install the panel and the cover of control boxsecurely.
.Do not modify or extend the power cord.
• There is risk of fire of electric shock. • No grounding may cause electric shock.
Installation
Service Manual 5
Safety Precautions
Do not install the product on a defective instal-lation stand.
Be sure the installation area does notdeteriorate with age.
• It may cause injury, accident, or damage to theproduct.
• If the base collapses, the air conditioner could fallwith it, causing property damage, product failure,and personal injury.
• Sharp edges could cause injury. Be especially care-ful of the case edges and the fins on the condenserand evaporator.
• There is risk of fire, electric shock, explosion, or injury.
Be cautious when unpacking and installing theproduct.
For installation, always contact the dealer oran Authorized service center
For re-installation of the installed product,always contact a dealer or an authorized ser-vice center.
Do not install, remove, or re-install the unit byyourself.
• There is risk of fire, electric shock, explosion, orinjury.
• There is risk of fire, electric shock, explosion, orinjury.
6 Room Air Conditioner
Safety Precautions
Operation
Do not turn the air-conditioner ON or OFF byplugging or unplugging the power plug.
Use a dedicated outlet for this appliance.
• There is risk of fire or electrical shock. • There is risk of fire or electrical shock.
Grasp the plug to remove the cord from theoutlet. Do not touch it with wet hands.
Do not place a heater or other appliances nearthe power cable.
• There is risk of fire or electrical shock. • There is risk of fire and electric shock.
Do not allow water to run into electrical parts. Do not store or use flammable gas or com-bustibles near the air conditioner.
• There is risk of fire, failure of the product, or electricshock.
• There is risk of fire or failure of product.
Wax Thinner
Service Manual 7
Safety Precautions
Always check for gas (refrigerant) leakage afterinstallation or repair of product.
Install the drain hose to ensure that water isdrained away properly.
• Low refrigerant levels may cause failure of product. • A bad connection may cause water leakage.
Keep level even when installing the product. Use two or more people to lift and transportthe air conditioner.
• To avoid vibration or water leakage. • Avoid personal injury.
Installation
90°
Unplug the unit if strange sounds, odors, orsmoke comes from it.
Be cautious that water could not enter theproduct.
• There is risk of electric shock or fire. • There is risk of fire, electric shock, or product dam-age.
8 Room Air Conditioner
Use a soft cloth to clean. Do not use harshdetergents, solvents, etc.
Do not touch the metal parts of the productwhen removing the air filter. They are verysharp!
• There is risk of fire, electric shock, or damage to theplastic parts of the product.
• There is risk of personal injury.
Do not step on or put anyting on the product.(outdoor units)
Do not insert hands or other objects throughthe air inlet or outlet while the air conditioneris plugged in.
• There is risk of personal injury and failure of product. • There are sharp and moving parts that could causepersonal injury.
Operation
Wax
Safety Precautions
Service Manual 9
Dimensions
Tubing hole cover
Tubing hole cover
Installation plate
DW
H
W
H
Tubing hole cover
Tubing hole cover
Installation plate
D
W
H
Tubing hole cover
Tubing hole cover Installation plate
D
Indoor Unit
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to theair conditioner.
This symbol indicates special notes.NOTICE
Symbols Used in this Manual
W mm 1,259 1,499
H mm 349 349
D mm 205 205
Model
DimensionSM CHASSIS SN CHASSIS
Dimensions
10 Room Air Conditioner
Outdoor Unit
Dimensions
MODELDIM
W
L7 L6 L8 L9
D L1L2
L3L1
0L1
1
L4L5
H
Gas side3-way valveLiquid side3-way valve
W mm 870
H mm 800
D mm 320
L1 mm 370
L2 mm 340
L3 mm 25
L4 mm 775
L5 mm 25
L6 mm 546
L7 mm 162
L8 mm 162
L9 mm 54
L10 mm 79
L11 mm 76.4
30k SERIES
• 30k
Service Manual 11
Dimensions
320
790
385
72
482 4-ø12Hole
249
71
145 500 145 1033
4 354
10
265
440 925
965
130
40
80
292.
5
(Air intake vent)
(Air intake vent)
(Air
inta
ke v
ent)
• 36k, 38K series
12 Room Air Conditioner
Product Specifications
Product Specifications
Cooling CapacityBTU/h(kcal/h)
W
Heating CapacityBTU/h(kcal/h)
WMoisture Removal l/hPower Source Ø, V, Hz
Air Circulation m3/min
Noise Level dB(A)±3
Input W
Runnig Current A
Starting Current A
E.E.R. BTU/h-WC.O.P W/W
Motor Output W
mm
Net. Weight kg
Refrigerant(R-22) gAirflow Direction Control (Up & Down)Airflow Direction Control (Right & Left)Negative lonAir Purifying FilterDeicerHot StartChaos WindMicom DryTimerSelf DiagnosisRemocon type
Service valve
Sleeping OperationDrain HoseConnecting CablePower Cord
28,000(7,056)/32,000(8,064) 28,000(7,056)/32,000(8,064)
8,205/9,377 8,205/9,377
29,000(7,308)/32,000(8,064) -
8,498/9,377 -
3.8 3.8
1ø,220-240V, 50Hz/1ø,220V, 60Hz 1ø,220-240V, 50Hz/1ø,220V, 60Hz
21 21
58 58
46 46
58 58
3,200/3,350 3,200/3,350
3,100/3,350 -
15.5/16.0 15.5/16.0
15/16.0 -
85 85
85 -
8.75/9.55 8.75/9.55
2.74/2.80 -
47 47
80 80
1,259 x 349 x 205 1,259 x 349 x 205
870 x 800 x 320 870 x 800 x 320
20 20
72 71
2100 1,950/2,420
YES YES
NO/YES NO/YES
NO NO
YES YES
YES NO
YES NO
YES YES
YES YES
24hr ON/OFF 24hr ON/OFF
YES YES
L.C.D Wireless L.C.D Wireless
3/8"(9.52) 3/8"(9.52)
5/8"(15.88) 5/8"(15.88)
YES YES
YES YES
0.75mm2 0.75mm2
2.5mm2 2.5mm2
Model Name
Unit
Indoor
OutdoorIndoor
OutdoorCooling
HeatingCooling
HeatingCooling
HeatingCooling
HeatingIndoorOutdoorIndoor
OutdoorIndoor
Outdoor
LiquidGas
Dimensions(W x H x D)
ItemLS-306MMM0
LS-C302MMM0
LS-C306MMB0/MMM0
Service Manual 13
Product Specifications
Cooling CapacityBTU/h(kcal/h)
W
Heating CapacityBTU/h(kcal/h)
WMoisture Removal l/hPower Source Ø, V, Hz
Air Circulation m3/min
Noise Level dB(A)±3
Input W
Runnig Current A
Starting Current A
E.E.R. BTU/h-WC.O.P W/W
Motor Output W
mm
Net. Weight kg
Refrigerant(R-22) gAirflow Direction Control (Up & Down)Airflow Direction Control (Right & Left)Negative lonAir Purifying FilterDeicerHot StartChaos WindMicom DryTimerSelf DiagnosisRemocon type
Service valve
Sleeping OperationDrain HoseConnecting CablePower Cord
38,000(9,557) 38,000(9,577) 36,000(9,073)
11,135 11,135 10,549
3,800(9,577) - -
11135 - -
4.2 4.2 4.2
1ø,220-240V, 60Hz 1ø,220-240V, 60Hz 1ø,220-240V, 60Hz
26 26 26
58 58 58
47 47 47
58 58 58
3,970 3,970 3,970
3,970 - -
19 19 19
19 - -
91 91 91
91 - -
9.23 9.23 9.23
2.45 - -
38 38 38
30 30 30
1,499 x 349 x 205 1,499 x 349 x 205 1,499 x 349 x 205
790 x 965 x 320 790 x 965 x 320 790 x 965 x 320
25 25 25
80 80 80
1950 1950 1950
YES YES YES
YES YES YES
NO NO NO
YES YES YES
YES NO NO
YES NO NO
YES YES YES
YES YES YES
24hr ON/OFF 24hr ON/OFF 24hr ON/OFF
YES YES YES
L.C.D Wireless L.C.D Wireless L.C.D Wireless
3/8"(9.52) 3/8"(9.52) 3/8"(9.52)
3/4"(19.05) 3/4"(19.05) 3/4"(19.05)
YES YES YES
YES YES YES
0.75mm2 0.75mm2 0.75mm2
5.5mm2 5.5mm2 5.5mm2
Model Name
Unit
Indoor
OutdoorIndoor
OutdoorCooling
HeatingCooling
HeatingCooling
HeatingCooling
HeatingIndoorOutdoorIndoor
OutdoorIndoor
Outdoor
LiquidGas
Dimensions(W x H x D)
ItemLS-H382NMB0/NMM0 LS-C382NMB0/NMM0 LS-C362NMD0/NMM0
14 Room Air Conditioner
Product Specifications
Cooling CapacityBTU/h(kcal/h)
W
Heating CapacityBTU/h(kcal/h)
WMoisture Removal l/hPower Source Ø, V, Hz
Air Circulation m3/min
Noise Level dB(A)±3
Input W
Runnig Current A
Starting Current A
E.E.R. BTU/h-WC.O.P W/W
Motor Output W
mm
Net. Weight kg
Refrigerant(R-22) gAirflow Direction Control (Up & Down)Airflow Direction Control (Right & Left)Negative lonAir Purifying FilterDeicerHot StartChaos WindMicom DryTimerSelf DiagnosisRemocon type
Service valve
Sleeping OperationDrain HoseConnecting CablePower Cord
36,000(9,073)
10,549
36,000(9,073)
10,549
4.2
1ø, 220-240V, 50Hz
26
58
47
58
3970
3970
19
19
91
91
9.23
2.41
65
50
1,499 x 349 x 205
790 x 965 x 320
25
80
3250
YES
NO
NO
NO(OPTIONAL)
NO
NO
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
3/8(9.52)
3/4(19.05)
YES
YES
0.75mm2
5.5mm2
Model Name
Unit
Indoor
OutdoorIndoor
OutdoorCooling
HeatingCooling
HeatingCooling
HeatingCooling
HeatingIndoorOutdoorIndoor
OutdoorIndoor
Outdoor
LiquidGas
Dimensions(W x H x D)
ItemLS-H362NMD0/NMM0
Service Manual 15
Installation
Installation
Installation of Indoor, Outdoor unit1) Select the best location1. Indoor unit
Do not have any heat or steam near the unit. Select a place where there are no obstacles in
front of the unit. Make sure that condensation drainage can be
conveniently routed away. Do not install near a doorway. Ensure that the space around the left and right of
the unit is more than 30cm. The unit should beinstalled as high on the wall as possible, allowinga minimum of 12cm from ceiling.
Use a stud finder to locate studs to preventunnecessary damage to the wall.
2. Outdoor unit
If an awning is built over the unit to prevent direct sun-light or rain exposure, make sure that heat radiationfrom the condenser is not restricted.
Ensure that the space around the back and sides ismore than 10cm. The front of the unit should havemore than 70cm of space.
Do not place animals and plants in the path of thewarm air.
Take the air conditioner weight into account and selecta place where noise and vibration are minimum.
Select a place so that the warm air and noise from theair conditioner do not disturb neighbors.
Rooftop Installations:If the outdoor unit is installed on a roof structure, besure to level the unit. Ensure the roof structure andanchoring method are adequate for the unit location.Consult local codes regarding rooftop mounting.If the outdoor unit is installed on root structures or walls,this may result in excessive noise and vibration, andmaybe also classed as non serviceable installation.
2) Piping length and elevation
More than 12cmMore than
30cm
More than30cm
More than 2.3m
More than 10cm More than 10cm
More than 60cm
More than 60cm
More than 70cm
More than 10cm More than 10cm
More than 60cm
More than 60cm
More than 70cm
In case more than 5m
• Capacity is based on standard length and maximumallowance length is on the basis of reliability.
• Oil trap should be installed every 5~7 meters.
Outdoor unit
Indoor unit
A
B Outdoor unit
Indoor unit
A
B
CAUTION
CAUTION: Install the indoor unit on the wallwhere the height from the floors more than 2.3meters. A minimum pipe run of 7.5 meters isrequired to minimise vibration & excessive noise. 30k, 32k 5/8" 3/8" 7.5 15 30 30
36k, 38k 3/4" 3/8" 7.5 20 30 50
Pipe SizeCapacity(Btu/h) GAS LIQUID
Max.lengthA (m)
AdditionalRefrigerant
(g/m)
Max.Elevation
B (m)
StandardLength
(m)
36k, 38k
30K, 32K
16 Room Air Conditioner
Installation
3) How to fix installation plateThe wall you select should be strong and solid enough to preventvibration
1. Mount the installation plate on the wall with fourtype A screws. If mounting the unit on a concretewall, use anchor bolts.
Mount the installation plate horizontally byaligning the centerline using a level.
2. Measure the wall and mark the centerline. It is alsoimportant to use caution concerning the locationof the installation plate-routing of the wiring topower outlets is through the walls typically.Drilling the hole through the wall for piping con-nections must be done safely.
5-7m
m
(0.2
~0.
3")
Indoor
WALL
Outdoor
Installation Plate
Type "A" screw
Right rear pipingLeft rear piping
ø70mm195mm
115m
m
115m
m
180mm
Right rear piping
30k, 32k
36k, 38k
Left rear piping
50mm ø70mm180mm
115m
m
4) Drill a hole in the wall Drill the piping hole with a ø70mm hole core drill.
Drill the piping hole at either the right or the leftwith the hole slightly slanted to the outdoor side.
Service Manual 17
Installation
Flaring Work and Connection of Piping
1) Flaring workMain cause for gas leakage is due to defect in flar-ing work. Carry out correct flaring work in the follow-ing procedure.
1. Cut the pipes and the cable.
Use the piping kit accessory or the pipespurchased locally.
Measure the distance between the indoor and theoutdoor unit.
Cut the pipes a little longer than measureddistance.
Cut the cable 1.5m longer than the pipe length.
2. Burrs removal
Completely remove all burrs from the cut crosssection of pipe/tube.
Put the end of the copper tube/pipe in a down-ward direction as you remove burrs in order toavoid dropping burrs into the tubing.
3. Putting nut on
Remove flare nuts attached to indoor and outdoorunit, then put them on pipe/tube having complet-ed burr removal.(not possible to put them on after flaring work)
Copperpipe 90° Slanted Uneven Rough
Bar
Copper pipe
Clamp handleRed arrow mark
Cone
Yoke
Handle
Bar"A"
Pipe
Reamer
Point down
4. Flaring work
Carry out flaring work using flaring tool as shownbelow.
Firmly hold copper pipe in a die in the dimensionshown in the table above.
5. Check
Compare the flared work with figure below. If flare is noted to be defective, cut off the flared
section and do flaring work again.
mm inch mmø6.35 1/4 0 ~ 0.5ø9.52 3/8 0 ~ 0.5ø12.7 1/2 0 ~ 0.5ø15.88 5/8 0 ~ 1.0ø19.05 3/4 1.0 ~ 1.3
Outside diameter A
Flare nut
Copper tube Inclined
Inside is shiny without scratches
Smooth all round
Even lengthall round
Surfacedamaged
Cracked Uneventhickness
= Improper flaring =
18 Room Air Conditioner
Installation
2) Connection of piping-Indoor1. Remove the 2 screws of right side panel.
2. Remove the front right side panel by the arrow.
The connector can be disconnected by pulling itwhile pressing the connector's hook.
Remove the 1 screw for fixing lower panel.
3. Remove the lower panel by the arrow.
Take care not to scratch the wall and mat todrop.
1. Route the indoor tubing and the drain hose in thedirection of rear left.
2. Insert the connecting cable into the indoor unitfrom the outdoor unit through the piping hole.
Do not connect the cable to the indoor unit.
Make a small loop with the cable for easyconnection later.
Right side panel
Drain hoseMain PCB
Lower panel
Lower panel
For left rear piping
CAUTION: When install,make sure that the remain-ing parts must be removedclearly so as not to damagethe piping and drain hose,especially power cord andconnecting cable.
Service Manual 19
Installation
3. Tape the tubing, drain hose and the connectingcable. Be sure that the drain hose is located at thelowest side of the bundle. Locating at the upper sidecan cause drain pan to overflow inside the unit.
3. Tape the tubing, drain hose and the connectingcable. Be sure that the drain hose is located at thelowest side of the bundle. Locating at the upper sidecan cause drain pan to overflow inside the unit.
: If the drain hose is routed inside the room,insulate the hose with an insulation materi-al* so that dripping from "sweating"(conden-sation) will not damage furniture or floors.*Foamed polyethylene or equivalent is rec-ommended.
4. Indoor unit installation
Hook the indoor unit onto the upper portion of theinstallation plate.(Engage the three hooks of therear top and rear lower of the indoor unit with theupper edge and lower edge of the installationplate.) Ensure that the hooks are properly seatedon the installation plate by moving it left and right.
NOTICE
5. Connecting the pipings to the indoor unit and drainhose to drain pipe.
Align the center of the pipings and sufficientlytighten the flare nut by hand.
Tighten the flare nut with a wrench.
When extending the drain hose at the indoor unit,install the drain pipe.
Connecting cable
Loop
Gas sidepiping
Liquid sidepipingDrain hose
Installationplate
Three upperhooks
Installation plate
Indoor unit
Three lowerhooks
Setting line
Indoor unit tubing Flare nut Pipings
Connection pipe
Flare nut
Indoor unit tubing
Torque wrench
Spanner (fixed)
Vinyl tape(narrow)Adhesive
Drain pipe
Indoor unit drain hose
Pipe Size[Torque]Capacity(Btu/h) GAS LIQUID
30k, 32k 5/8"[6.6kg.m] 3/8"[4.2kg.m]
36k, 38k 3/4"[6.6kg.m] 3/8"[4.2kg.m]
20 Room Air Conditioner
Installation
6. Wrap the insulation material around the connectingportion.
Overlap the connection pipe insulation material andthe indoor unit pipe insulation material. Bind themtogether with vinyl tape so that there is no gap.
Wrap the area which accommodates the rear pip-ing housing section with vinyl tape.
Bundle the piping and drain hose together bywrapping them with vinyl tape over the range with-in which they fit into the rear piping housing sec-tion.
1. Route the indoor tubing and the drain hose to therequired piping hole position.
2. Insert the piping, drain hose and the connectingcable into the piping hole.
3. Insert the connecting cable into the indoor unit.
Don't connect the cable to the indoor unit.
Make a small loop with the cable for easyconnection later.
4. Tape the drain hose and the connecting cable.
• Connecting cable
Plastic bands Insulation material
Drain hose
Drain pipe
Connecting cable
Vinyl tape(narrow)
Connectionpipe
Connecting cable
Vinyl tape(wide)
Wrap with vinyl tape
Indoor unit pipe
Pipe
Wrap with vinyl tape
Drain hose
Pipe
Vinyl tape(wide)
For right rear piping
Service Manual 21
Installation
5. Indoor unit installation
Hook the indoor unit onto the upper portion of theinstallation plate.(Engage the three hooks of therear top and rear lower of the indoor unit with theupper edge and lower edge of the installationplate.) Ensure that the hooks are properly seatedon the installation plate by moving it left and right.
6. Connecting the pipings to the indoor unit and thedrain hose to drain pipe.
Align the center of the pipings and sufficientlytighten the flare nut by hand.
Tighten the flare nut with a wrench.
When extending the drain hose at the indoor unit,install the drain pipe.
7. Wrap the insulation material around the connectingportion.
Overlap the connection pipe heat insulation and theindoor unit pipe heat insulation material. Bind themtogether with vinyl tape so that there is no gap.
Wrap the area which accommodates the rearpiping housing section with vinyl tape.
Installationplate
Three upperhooks
Installation plate
Indoor unit
Three lowerhooks
Setting line
Vinyl tapeAdhesive
Drain hose
Indoor unit drain hose
(narrow)
Plastic bands Insulation material
Vinyl tape(narrow)
Connectionpipe
Connecting cable
Indoor unit piping
Pipe
Vinyl tape(wide)
Wrap with vinyl tape
Indoor unit tubing Flare nut Pipings
Torque wrench
Indoor unit tubing
Spanner (fixed)
Connection pipe
Flare nut
30k 5/8"[6.6kg.m] 3/8"[4.2kg.m]
36k 3/4"[6.6kg.m] 3/8"[4.2kg.m]
Pipe Size[Torque]Capacity(Btu/h) GAS LIQUID
22 Room Air Conditioner
Installation
Bundle the piping and drain hose together bywrapping them with cloth tape over the rangewithin which they fit into the rear piping housingsection.
8. Reroute the pipings and the drain hose across theback of the chassis.
9. Reinstall the parts to the original position.
Refix the lower panel to the original position.
Connect display conductor.
Refix the front right side panel to the originalposition with the two screws.
Drain hoseVinyl tape(narrow)
Pipe
Wrap with vinyl tape(wide) Lower panel
Main PCB
Piping forpassage throughpiping hole
Service Manual 23
Installation
3) Connection of the drain hose The drain hose can be connected at two different
positions. Use the most convenient position and, ifnecessary, exchange the position of the drainpan, rubber cap and the drain hose.
Drain pan
Rubber cap
Drain hose
Exchange if necessary
Remove the drain hose.
Securely insert both the rubber plug and drainhose into the drain outlets.Be sure the rubber the cap is securely fastenedso that there is no leakage.
4) Connection of piping-Outdoor
1. Align the center of the pipings and sufficientlytighten the flare nut by hand.
2. Finally, tighten the flare nut with torque wrenchuntil the wrench clicks.
When tightening the flare nut with torque wrench,ensure the direction for tightening follows thearrow on the wrench.
1
2
3
4
Outdoor unit Gas side piping(Bigger diameter)
Liquid sidepiping(Smallerdiameter)
Torque wrench
Gas side piping(Bigger diameter)
Liquid side piping(Smaller diameter)
Torque wrench
30k, 32k 5/8"[6.6kg.m] 3/8"[4.2kg.m]
36k, 38k 3/4"[6.6kg.m] 3/8"[4.2kg.m]
Pipe Size[Torque]Capacity(Btu/h) GAS LIQUID
30k
36k
24 Room Air Conditioner
Installation
Connecting the cable between indoor unit and outdoor unit
1) Connect the cable to the Indoor unit. Connect the cable to the indoor unit by connect-
ing the wires to the terminals on the controlboard individually according to the outdoor unitconnection.(Ensure that the color of the wires of theoutdoor unit and the terminal No. are the same asthose of the indoor unit.)
REDBLUEBROWN
4(N)Terminals on the indoor unit 3(L) 5
4(N)Terminals on the outdoor unit
Color of Wires
POWER INPUT
Color of Wires
3(L)2(N)1(L) 5
G/Y
REDBLUEBROWNG/Y
The power cord connected to the outdoor unit should be complied with the followingspecifications (Rubber insulation, type H05RN-F approved by HAR or SAA).
The connecting cable connected to the indoorand outdoor unit should be complied with thefollowing specifications (Rubber insulation, typeH07RN-F approved by HAR or SAA).
CAUTION
8.5m
m
20mm
GN/YL
NORMALCROSS-SECTIONALAREA 2.5mm2
8.5m
m20mm
GN/YL
NORMALCROSS-SECTIONALAREA 5.5mm2
20mm
GN/YL
NORMALCROSS-SECTIONALAREA 0.75mm2
7.5m
m
30k, 32k
36k, 38k
Air Conditioner
Main power source
Circuit BreakerUse a circuit breakeror time delay fuse.
CAUTION: If a power plug isnot to be used, provide a circuitbreaker between power sourceand the unit as shown below.
Service Manual 25
Installation
2) Connect the cable to the outdoor unit
1. Remove the control cover from the unit by loosen-ing the screw.Connect the wires to the terminals on the controlboard individually.
2. Secure the cable onto the control board with thecord clamp.
3. Refix the control cover to the original position withthe screw.
4. Use a recognized circuit breaker 30A (30k, 32k),35A (36k, 38k) between the power source and theunit. A disconnecting device to adequately discon-nect all supply lines must be fitted.
Main terminal board
Control terminal board
Cover control
Terminal block
Over 5mm
Cover control
Connecting cable
The powerconnecting cable
CAUTION: After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have an individual power circuit specifically for the air conditioner. As for the methodof wiring, be guided by the circuit diagram posted on the inside of control cover.
2) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose fromvibrations to which the unit is subjected during the course of transportation. Check them and makesure that they are all tightly fastened. (If they are loose, it could cause burn-out of the wires.)
3) Specification of power source.4) Confirm that electrical capacity is sufficient.5) See to that the starting voltage is maintained at more than 90 percent of the rated voltage marked
on the name plate.6) Confirm that the cable thickness is as specified in the power source specification.
(Particularly note the relation between cable length and thickness. (Refer to page 24)7) Always install an earth leakage circuit breaker in a wet or moist area.8) The following would be caused by voltage drop.
• Vibration of a magnetic switch, which will damage the contact point, fuse breaking, disturbance of the nor-mal function of the overload.
9) The means for disconnection from a power supply shall be incorporated in the fixed wiring andhave an air gap contact separation of at least 3mm in each active(phase) conductors.
Outdoor Unit
36K, 38K
30K, 32K
26 Room Air Conditioner
Installation
1) Checking the drainage1. Remove the right side panel.
2. Remove the lower panel by the arrow.
3. Remove the left side panel.(Remove the two screws.)
4. To check the drainage.
Pour a glass of water on the drain pan.
Ensure the water flows through the drain hose ofthe indoor unit without any leakage and goes outthe drain exit.
5. Drain piping
The drain hose should point downward for easydrain flow.
Do not make drain piping.
Right side panel
Downward slope
Do not raise Accumulateddrain water
Tip of drain hose dipped in water
Air
WavingWaterleakage
Waterleakage Ditch
Less than 50mm gap
Waterleakage
Lower panel
Left side panel
Service Manual 27
Installation
2) Form the piping1. Form the piping by wrapping the connecting por-
tion of the indoor unit with insulation material andsecure it with two kinds of vinyl tapes.
If you want to connect an additional drain hose,the end of the drain outlet should be routed abovethe ground. Secure the drain hose appropriately.
2. In cases where the outdoor unit is installed belowthe indoor unit perform the following.
Tape the piping, drain hose and connecting cablefrom down to up.
Secure the tapped piping along the exterior wallusing saddle or equivalent.
3. In cases where the Outdoor unit is installed abovethe Indoor unit perform the following.
Tape the piping and connecting cable from downto up.
Secure the taped piping along the exterior wall.Form a trap to prevent water entering the room.
Fix the piping onto the wall by saddle or equiva-lent.
Taping
Drainhose
Pipings
Connectingcable
Trap is required to prevent waterfrom entering into electrical parts.
Seal small openingsaround pipings with agum type sealer.
Trap is required to prevent water from entering into electrical parts.
Seal a small openingaround the pipingswith gum type sealer.
Drain hose
Taping
Pipings
Connectingcable
Power supplycord
Seal a small opening around the pipings with gum type sealer.
Trap
Trap
Seal a small opening around the pipings with gum type sealer.
Trap
Trap
30k, 32k
30k, 32k
36k, 38k
36k, 38k
28 Room Air Conditioner
AIR PURGING
Installation
1) Air purgingAir and moisture remaining in the refrigerant systemhave undesirable effects as indicated below. Pressure in the system rises. Operating current rises. Cooling(or heating) efficiency drops. Moisture in the refrigerant circuit may freeze and
block capillary tubing. Water may lead to corrosion of parts in the refrig-
eration system.Therefore, the indoor unit and tubing between theindoor and outdoor unit must be leak tested andevacuated to remove any noncondensables andmoisture from the system.
2) Air purging with vacuum pump1. Preparation
Check that each tube(both liquid and gas sidetubes) between the indoor and outdoor units havebeen properly connected and all wiring for the testrun has been completed. Remove the servicevalve caps from both the gas and the liquid sideon the outdoor unit. Note that both the liquid andthe gas side service valves on the outdoor unitare kept closed at this stage.
2. Leak test Connect the manifold valve(with pressure gauges)
and dry nitrogen gas cylinder to this service portwith charge hoses.
Pressurize the system to no more than 150 P.S.I.G.with dry nitrogen gas and close the cylinder valvewhen the gauge reading reached 150 P.S.I.G.Next, test for leaks with liquid soap.
Do a leak test of all joints of the tubing(both indoorand outdoor) and both gas and liquid side servicevalves.Bubbles indicate a leak. Be sure to wipe off thesoap with a clean cloth.
After the system is found to be free of leaks,relieve the nitrogen pressure by loosening thecharge hose connector at the nitrogen cylinder.When the system pressure is reduced to normal,disconnect the hose from the cylinder.
CAUTION: Be sure to use a manifold valve forair purging. If it is not available, use a stop valve forthis purpose. The "Hi" knob of the manifold valvemust always be kept close.
CAUTION:To avoid nitrogen entering therefrigerant system in a liquid state, the top of thecylinder must be higher than its bottom when youpressurize the system. Usually, the cylinder isused in a vertical standing position.
Lo Hi
Indoor unit Indoor unit
Outdoor unit Outdoor unit
Manifold valve
Charge hose
Nitrogen gascylinder(in verticalstanding position)
Pressure gauge
30k, 32k 36k, 38k
Service Manual 29
Installation
3. Evacuation
Connect the charge hose end described in thepreceding steps to the vacuum pump to evacuatethe tubing and indoor unit.Confirm the "Lo" knob of the manifold valve isopen. Then, run the vacuum pump.The operation time for evacuation varies with tubinglength and capacity of the pump. The followingtable shows the time required for evacuation.
When the desired vacuum is reached, close the"Lo" knob of the manifold valve and stop thevacuum pump.
4. Finishing the job
With a service valve wrench, turn the valve stemof liquid side valve counter-clockwise to fullyopen the valve.
Turn the valve stem of gas side valve counter-clockwise to fully open the valve.
Loosen the charge hose connected to the gasside service port slightly to release the pressure,then remove the hose.
Replace the flare nut and its bonnet on the gasside service port and fasten the flare nut securelywith an adjustable wrench. This process is veryimportant to prevent leakage from the system.
Replace the valve caps at both gas and liquidside service valves and fasten them tight.This completes air purging with a vacuum pump.The air conditioner is now ready to test run.
(1) Remove the caps from the gas side and liquid side valves.(2) Remove the service-port cap from the gas side valve.(3) To open the gas side valve turn the valve stem counter-
clockwise approximately 90°, wait for about 2~3 sec, andclose it.
(4) Apply a soap water or a liquid neutral detergent on theindoor unit connection or outdoor unit connections by asoft brush to check for leakage of the connecting points ofthe piping.
(5) If bubbles come out, the pipes have leakage.
Soap water methodGas side
Liquid side
Cap
Hexagonal wrench
3-way valve(Open)
3-way valve(Close)
Required time for evacuationwhen 30 gal/h vacuum pump is used
10 min. or more 15 min. or more
If tubing length is lessthan 10m (33 ft).
If tubing length is longerthan 10m (33 ft).
Indoor unit
Outdoor unit
Lo Hi
Manifold valve
Vacuum pump
Pressure gauge
Open Close
Indoor unit
Outdoor unit
36k, 38k30k, 32k
30 Room Air Conditioner
1. Check that all tubing and wiring have been prop-erly connected.
2. Check that the gas and liquid side service valvesare fully open.
1. Prepare remote control
Remove the battery coverby pulling it according to thearrow direction.Insert new batteries makingsure that the (+) and (–) ofbattery are installed correctly.Reattach the cover bypushing it back into position.
• Use 2 AAA(1.5volt) batteries. Do not use recharge-able batteries.
• Remove the batteries from the remote control if thesystem is not going to be used for a long time.
2. Settlement of outdoor unit
Anchor the outdoor unit with a bolt andnut(ø10mm) tightly and horizontally on a concreteor rigid mount.
When installing on the wall, roof or rooftop, anchorthe mounting base securely with a nail or wireassuming the influence of wind and earthquake.
In the case when the vibration of the unit is con-veyed to the hose, secure the unit with ananti-vibration rubber.
NOTICE
3. Evaluation of the performance
Operate unit for 15~20 minutes, then check the sys-tem refrigerant charge:
1. Measure the pressure of the gas side servicevalve.
2. Measure the temperature of the intake and dis-charge of air.
: If the actual pressure are higher than shown,the system is most likely over-charged, andcharge should be removed. If the actualpressure are lower than shown, the systemis most likely undercharged, and chargeshould be added.The air conditioner is now ready for use.
NOTICE
Bolt
Tubing connection
This is performed when the unit is to be relocatedor the refrigerant circuit is serviced.Pump Down means collecting all refrigerant in the out-door unit without loss in refrigerant gas.
CAUTION:Be sure to perform Pump Down procedure with theunit cooling mode.
Pump Down Procedure1. Connect a low-pressure gauge manifold hose to the
charge port on the gas side service valve.2. Open the gas side service valve halfway and purge the
air from the manifold hose using the refrigerant gas.3. Close the liquid side service valve(all the way in).4. Turn on the unit's operating switch and start the cool-
ing operation.5. When the low-pressure gauge reading becomes 1 to
0.5kg/cm2 G(14.2 to 7.1 P.S.I.G.), fully close the gasside valve stem and then quickly turn off the unit. Atthat time, Pump Down has been completed and allrefrigerant gas will have been collected in the outdoorunit.
PUMP DOWN
3. Ensure the difference between the intake temper-ature and the discharge is more than 8°C(Cooling) or reversely (Heating).
4. For reference; the gas side pressure of optimumcondition is as below.(Cooling)
Dischargetemperature
Discharge air
Intake temperature
TEST RUNNING
Outside ambient TEMP The pressure of the gas side service valve
35°C(95°F) 4~5kg/cm2 G(56.8~71.0 P.S.I.G.)
Installation
Service Manual 31
• DISPLAY1) C/O Model (high quality LCD remote controller supplied)
Operation Indicator• On while in appliance operation, off while in appliance pause
Timer Indicator• On while in timer mode (on/off) and in sleep timer mode, off when timer mode is completed or canceled.
Comp. Running Indicator• While in appliance operation, on while in outdoor unit compressor running, off while in compressor off
Plasma Indicator• On while in plasma mode, off while plasma mode is canceled.
Auto restart Indicator• On while auto restart mode, off while auto restart mode is canceled.
Auto restart• In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate
procedures automatically to the previous operating conditions.If your want to use this operation, press the Auto Restart Button.
Power(Forced Operation)• Operation starts, when this button is pressed and stops when you press the button again.
2) H/P Model (high quality LCD remote controller supplied)
Operation Indicator• On while in appliance operation, off while in appliance pause
Timer Indicator• On while in timer mode (on/off) and in sleep timer mode, off when timer mode is completed or canceled
Defrost Indicator• Off except when hot start during heating mode operation or while in defrost control.
Plasma Indicator• On while in plasma mode, off while plasma mode is canceled.
Auto restart Indicator• On while auto restart mode, off while auto restart mode is canceled.
Auto restart• In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate
procedures automatically to the previous operating conditions.If your want to use this operation, press the Auto Restart Button.
Power(Forced Operation)• Operation starts, when this button is pressed and stops when you press the button again.
Cooling Mode Operation• When the intake air temperature reaches 0.5°C below the setting temp, the compressor and the outdoor fan stop.
• When it reaches 0.5°C above the setting temp, they start to operate again.
Compressor ON Temp=> Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp-0.5°C
• While in compressor running, operating with the airflow speed set by the remote controller. While in compressornot running, operating with the low airflow speed regardless of the setting.
MAIN UNIT FUNCTION
Operation
Operation
32 Room Air Conditioner
Operation
Healthy Dehumidification Mode
• When the dehumidification operation input by the remote controller is received, the intake air temperature isdetected and the setting temp is automatically set according to the intake air temperature.
26°C ≤ Intake Air Temp => 25°C
24°C ≤ Intake Air Temp < 26°C => Intake Air Temp-1°C
18°C ≤ Intake Air Temp < 24°C => Intake Air Temp-0.5°C
Intake Air Temp < 18°C => 18°C
• While in compressor off, the indoor fan repeats low airflow speed and pause.
• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidificationoperation and 4-min compressor off repeat
Compressor ON Temp. => Setting Temp+0.5°C
Compressor OFF Temp. => Setting Temp-0.5°C
• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.
Heating Mode Operation
• When the intake air temp reaches +3°Cabove the setting temp, the compressor is turned off. When below thesetting temp, the compressor is turned on.
Compressor ON Temp. => Setting Temp.
Compressor OFF Temp. => Setting Temp.+3°C
• While in compressor on, the indoor fan is off when the indoor pipe temp. is below 26®¨C , when above 28°C , itoperates with the low or setting airflow speed (while in sleep mode, with the medium airflow speed).
• While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C , when above 35°C , itoperates with the low airflow speed.
• If overloaded while in heating mode operation, in order to prevent the compressor from OLP operation, the out-door fan is turned on/off according to the indoor pipe temp.
• While in defrost control, both of the indoor and outdoor fans are turned off.
Defrost Control
• While in heating mode operation in order to protect the evaporator pipe of outdoor unit from freezing, reversedto cooling cycle to defrost the evaporator pipe of the outdoor unit.
• Defrost control is available 30 minutes later since heating mode operation started, and it will not polong over 6minutes.
• Deicing starts only when the outdoor pipe temperature falls below -6°C after 30 minutes passed from starting ofheating operating and more than 10 minutes operation of compressor.
• Deicing ends after 6 minutes passed from starting of deice operation or when the outdoor pipe temperature risesover 12°C even if before 6 minutes.
Fuzzy Operation (C/O Model)
• According to the temperature set by Fuzzy rule, when the intake air temp is 0.5°C or more below the settingtemp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on.
Compressor ON Temp => Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp+0.5°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.
Service Manual 33
Operation
26°C ≤ Intake Air Temp => 25°C
24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C
22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C
18°C ≤ Intake Air Temp<22°C => Intake Air Temp
Intake Air Temp<18°C => 18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temper-ature
Fuzzy Operation (H/P Model)
• When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed sincethe operation off, the operation mode is selected.
• When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and onlythe indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake airtemp at that moment as follows.
24°C ≤ Inatake Air Temp => Fuzzy Operation for Cooling
21°C ≤ Inatake Air Temp<24°C => Fuzzy Operation for Dehumidification
Inatake Air Temp<21°C => Fuzzy Operation for Heating
• If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for 10sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.
1) Fuzzy Operation for Cooling
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more belowthe setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor isturned on.
Compressor ON Temp => Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp+0.5°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.
26°C ≤ Intake Air Temp => 25°C
24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C
22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C
18°C ≤ Intake Air Temp<22°C => Intake Air Temp
Intake Air Temp < 18°C => 18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.
2) Fuzzy Operation for Dehumidification
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more belowthe setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor isturned on.
34 Room Air Conditioner
Operation
Compressor ON Temp => Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp+0.5°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.
26°C ≤ Intake Air Temp => 25°C
24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C
22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C
18°C ≤ Intake Air Temp<22°C => Intake Air Temp
Intake Air Temp < 18°C => 18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as indehumidification operation.
3) Fuzzy Operation for Heating
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C or more abovethe setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on.
Compressor ON Temp => Setting TempCompressor OFF Temp => Setting Temp + 3°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.20°C ≤ Intake Air Temp => Intake Air Temp + 0.5°CIntake Air Temp < 20°C => 20°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or the medium according to theintake air temperature and the setting temperature.
Airflow Speed Selection
• The airflow speed of the indoor fan is set to high, medium, low, or chaos by the input of the airflow speedselection key on the remote controller.
On-Timer Operation
• When the set time is reached after the time is input by the remote controller, the appliance starts to operate.
• The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.
• If the appliance is operating at the time set by the timer, the operation continues.
Off-Timer Operation
• When the set time is reached after the time is input by the remote controller, the appliance stops operating.
• The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.
• If the appliance is on pause at the time set by the timer, the pause continues.
Service Manual 35
Operation
Off-Timer <=> On-Timer Operation
• When the set time is reached after the on/off time is input by the remote controller, the on/off-timer operation iscarried out according to the set time.
Sleep Timer Operation
• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote controller while inappliance operation, the operation of the appliance stops.
• While the appliance is on pause, the sleep timer mode cannot be input.
• While in cooling mode operation, 30 min later since the start of the sleep timer, the setting temperatureincreases by 1°C After another 30 min elapse, it increases by 1°C again.
• When the sleep timer mode is input while in cooling cycle mode, the airflow speed of the indoor fan is set tothe low.
• When the sleep timer mode is input while in heating cycle mode, the airflow speed of the indoor fan is set tothe medium.
Chaos Swing Mode
• By the Chaos Swing key input, the vane automatically operates with the Chaos Swing or they are fixed to thedesired direction.
Chaos Natural Wind Mode
• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the air-flow mode is operated for 2~15 sec randomly by the Chaos Simulation.”
Jet Cool Mode Operation (C/O Model)
• If the Jet Cool key is input at any operation mode while in appliance operation, the Jet Cool mode operates.
• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.
• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C
• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.
• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and thenoperated in order that the air outflow could reach further.
Jet Cool Mode Operation (H/P Model)
• While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in the othermode operation (cooling, dehumidification, ventilation), the Jet Cool mode is operated.”
• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.
• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C
• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.
• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and thenoperated in order that the air outflow could reach further.
Auto Restarting Operation
• When the power is restored after a sudden power failure while in appliance operation, the mode before thepower failure is kept on the memory and the appliance automatically operates in the mode on the memory.
36 Room Air Conditioner
Operation
• Operation Mode that is kept on the memory
- State of Operation ON/OFF
- Operation Mode/Setting Temp/Selected Airflow Speed
- Sleep Timer Mode/Remaining Time of Sleep Timer (unit of hour)
Forced Operation ( C/O Model)
• To operate the appliance by force in case that the remote controller is lost, the forced operation button is onthe main unit of the appliance to operate the appliance in the standard conditions.
• Press the forced operation button, the forced operation is carried out.
• Press the forced operation button once again to stop operation.
• The forced operation is carried out in cooling mode with the setting temperature 22°C and the high speed ofairflow.
Forced Operation ( H/P Model)
• To operate the appliance by force in case that the remote controller is lost, the forced operation selectionswitch is on the main unit of the appliance to operate the appliance in the standard conditions.
• Press the forced operation button, the forced operation is carried out.
• Press the forced operation button once again to stop operation.
• In the forced operation mode, the indoor fan is operated at low speed for around 15 sec and then the operationcondition is set according to the intake air temperature as follows.
24°C ≤ Intake Air Temp => Cooling Mode Operation, 22°C, High Speed
21°C ≤ Intake Air Temp < 24°C => Dehumidification Operation, 23°C, High Speed
Intake Air Temp < 21°C => Heating Mode Operation, 24°C, High Speed
Test Operation Control
• To check the condition of the installation when installing the appliance, the appliance is operated at coolingmode, high speed of airflow, compressor-on for 18 min without controlling the room temperature.
• After supplying power to the main body, keep pressing the forced operation button for about 3 seconds.
• While in test operation, a key can be input by the remote controller.When a key (operation start/stop, operation mode selection, airflow speed selection, temperature control, JetCool) is input by the remote controller, the test operation is canceled and the appliance is operated accordingto the setting by the remote controller.
Protection of the evaporator pipe from frosting
• In the temperrature of the indoor pipe is below 0°C after 7 minutes from starting the compressor, the compres-sor and outdoor fan are stopped, and 3 minutes delay of operating of the compressor, when the temperature ofthe indoor pipe is over 7°C, the compressor and the outdoor fan are reoperated.
• Outdoor fan motor stops when indoor pipe temperature is blow 3°C and restarts at the pipe temperature above6°C or after 90 seconds, if the pipe temperature does not rise to 6°C, outdoor fan motor runs continuously ateven below 3°C.
Buzzer Sounding Operation
• When the appliance-operation key is input by the remote controller, the short “beep-beep-” sounds.
• When the appliance-pause key is input by the remote controller, the long “beep—” sounds.
Service Manual 37
Operation
Air Cleaner Operation
• When an air cleaner function is selected during Air Conditioner operation- Plasma air cleaner function will be operated while in any operation mode with selecting the function.- The function is to be stopped while it is operating with selecting the function.
• When an air cleaner function is selected during operation off- The function will be only operated.
• When inlet grille of air conditioner is opened during plasma operation, High Voltage Generator(H.V.B) is to bestopped. When inlet grille of air conditioner is closed during plasma operation, High Voltage Generator(H.V.B)will be operated again.
38 Room Air Conditioner
Display Function
Operation
Self-diagnosis Function
Signal ReceptorReceives the signals from the remote control.(Signal receiving sound: two short beeps or one long beep.)
Operation Indication Lamps
On/Off : Lights up during the system operation.
Timer or Sleep Mode : Lights up during Timer operation or Sleep mode.
Defrost Mode : Lights up during Defrost Mode or HotStart operation. (Heat pump model only)
Outdoor unit operation : Lights up during outdoor unit operation. (Cooling model only)
Plasma Mode : Lights up during plasma-purification operation.(option)
Auto Restart Mode : Lights up during if Restart Button is pressed.
Auto Restart Button : In failure of electric power, if the button is pressed theunit runs as previoussetting operation when power returns.
Forced Operation Button : Operation starts, when this button is pressed and stops when you press thebutton again.
3sec 3sec 3sec
(once)
3sec 3sec
(twice)
3sec
(5times)
ErrorCode
1
2
5
Error LED(Indoor body operation LED)
Error contents
• Indoor room temperaturethermistor open/short
• Indoor pipe temperaturethermistor open/short.
• Outdoor pipe temperaturethermistor open/short.
• Poor communication.
• Indoor TH assy check
• Outdoor TH assy check
• Communication line/circuitcheck
SVC check point
Service Manual 39
Operation
Name and Function-Remote Control
The remote control transmits the signals to the system.
1. START/STOP BUTTONOperation starts when this button is pressed and stopswhen the button is pressed again.
2. OPERATION MODE SELECTION BUTTONUsed to select the operation mode.
3. ROOM TEMPERATURE SETTING BUTTONSUsed to select the room temperature.
4. INDOOR FAN SPEED SELECTORUsed to select fan speed in four steps low, medium, highand CHAOS.
5. JET COOLUsed to start or stop the speed cooling. (Speed coolingoperates super high fan speed in cooling mode.)
6. CHAOS SWING BUTTONUsed to stop or start louver movement and set the desiredup/down airflow direction.
7. ON/OFF TIMER BUTTONSUsed to set the time of starting and stopping operation.
8. TIME SETTING BUTTONSUsed to adjust the time.
9. TIMER SET/CANCEL BUTTONUsed to set the timer when the desired time is obtainedand to cancel the Timer operation.
10. SLEEP MODE AUTO BUTTONUsed to set Sleep Mode Auto operation.
11. AIR CIRCULATION BUTTONUsed to circulate the room air without cooling or heating.
12. ROOM TEMPERATURE CHECKING BUTTONUsed to check the room temperature.
13. PLASMA(OPTIONAL)Used to start or stop the plasma-purification function.
14. HORIZONTAL AIRFLOW DIRECTION CONTROLBUTTON (NOT ON ALL MODELS)Used to set the desired horizontal airflow direction.
15. RESET BUTTONUsed prior to resetting time or after replacing batteries.
16. 2nd F ButtonUsed prior to using modes printed in blue at the bottomof buttons.
17. AUTO CLEANUsed to set Auto Clean mode.
ON OFF
CANCEL
AUTO CLEANSET
1
3
5
4
9
10
171214
16
72
813
15
11
6
Cooling Operation
Auto Operation
Healthy Dehumidification Operation
Flip-up door(opened)
Heating Operation
Signal transmitter
• Cooling Model( ), Heat Pump Model( )
Remote Control
Operation Mode
40 Room Air Conditioner
DisassemblyIndoor Unit
Disassembly
Warning :Disconnect the unit from power supply before makingany checks.Be sure the power switch is set to “OFF”.
1. To remove the Grille from the Chassis.
Remove the 2 screws of right side panel.
Remove the right side panel by the arrow.
The connector can be disconnected by pulling itwhile pressing the connector's hook.
Remove the 1 screw for fixing low panel.
Remove the lower panel by the arrow.
Take care not to scratch the wall and mat todrop.
Remove the left side panel.(Remove the 2 screws.)
Right side panel
Main PCB
Lower panel
Left side panel
Lower panel
Service Manual 41
Disassembly
Remove the grille from the chassis.
• Remove the 4 securing screws.(30K, 32K)• Remove the 5 securing screws.(36K, 38K)• To remove the Grille, pull the lower left and right side
of the grille toward you (slightly tilted) and lift itstraight upward.
Separate the black lead wire from the white connectorin case of plasma model.
2. To remove the sensor, housing connector, earthconductor and step motor conductor with sensorholder, Motor, Evaporator and P.C.B.
PowerConductor
Step MotorConductor
MotorConductor
SensorConductor
EarthConductor
BLACK WHITE
30k
36k
30k 36k
42 Room Air Conditioner
Disassembly
3. To remove the Control Box.• Remove the 5 securing screws.• Pull the control box out from the chassis
carefully.
4. To remove the Discharge Grille.• Remove the 3 securing screw.• Pressing the right side of the discharge grille
downward slightly, unhook the discharge grille.• Pull the discharge grille out from the chassis
carefully.
5. To remove the Evaporator.• Remove 3 screws securing the evaporator(at the
left 2EA, at the right 1EA).• Remove 2 screw securing the evaporator clamp.
• Unhook the tab on the right inside of the chassisat the same time, slightly pull the evaporatortoward you until the tab is clear of the slot.
Screw
Screw
Screw
Screw
Service Manual 43
Disassembly
6. To remove the Fan motor• Loosen the screw securing the cross-flow fan to
the fan motor (do not remove).
• Loosen the screw securing the mount motor.
• Separate the fan motor from the cross-flow fan.• Take care not to drop the motor.
7. To remove the Cross-Flow Fan• Loosen the screw securing the holder bearing.• Lift up the cross-flow fan.
Screw
Fan motor
Screw
Screw
Fan motor
Mount motor
Holder bearing
44 Room Air Conditioner
Schematic Diagram
Schematic Diagram
Schematic Diagram
Heat Pump/Cooling Only Series(Indoor Unit)
Service Manual 45
Schematic Diagram
Heat Pump Series (Outdoor Unit) Model: 30K Series
55
44
33
22
11
46 Room Air Conditioner
Schematic Diagram
Model: 36K, 38K Series
Service Manual 47
Schematic Diagram
Cooling Only Series (Outdoor Unit) Model: 30K Series
55
44
33
22
11
48 Room Air Conditioner
Schematic Diagram
Model: 36K, 38K Series
Service Manual 49
Schematic Diagram
Wiring Diagram
• Indoor Unit
3854A20065A
MOTOR
SH-CAPA.
YL
PILLARTERMINAL
AUTO RESTARTFORCED OPERATION
CN-DISP
CN
-L/R
CN
-U/D
CN
-TH
THERMISTOR
STEPMOTOR
(UP/DOWN)
STEPMOTOR
(L/R)
H.V.B ASM
LIMITS S/W
Negative ion
OPTION
STEPMOTOR
(L/R)CN
-L/R
DISPLAY PCB ASM
INDOOR WIRING DIAGRAM
TO OUTDOOR UNIT
BL
3(L) 4(N) 5
BR
GN
/YL
BL
RD
RD
BR
GN
/YL
BR
FUSEAC250V/T2A
TRIACOR
BK
ZNR
CN-POWER
CN-MOTOR
50 Room Air Conditioner
Schematic Diagram
• Outdoor Unit
LS-C302MMM0LS-C306MMB0LS-C306MMM0
LS-C362NMD0LS-C362NMM0LS-C382NMB0LS-C382NMM0
LS-H306MMM0 LS-H362NMD0LS-H362NMM0LS-H382NMB0LS-H382NMM0
OUTDOOR WIRING DIAGRAM 3854A20051G
5(COMM)3(L) 4(N)
BL
RD
BR
R
SCOMP
RUNNINGCAPACITOR
BL
BL
BR
BL
1(L) 2(N) TERMINAL BLOCK
BL
12
BK
BR
CN-P2(N)
CN-COMP2
CN-FANOR
ORFAN
OUTDOOR PCBCAPACITOR YL
CN-P1(L)
CN-COMM
RD
BK
TERMINAL BLOCK1
TO INDOOR UNITPOWER INPUT
FUS
E(5
A)
FUS
E(5
A)
1026
48 POWERRELAY
BR
C
53(L) 4(N)
BK
RD
WH
R
SCOMP
RUNNINGCAPACITOR
BL
BLBR
BRBK
BK
BK
BK
WH
1(L) 2(N) TERMINAL BLOCK
12
CN-P2(N)
CN-COMP2
CN-FAN
OR
OROR
FAN1OUTDOOR PCB
MAGNECTICCONTACTOR
CAPACITOR
YLYL
CN-P1(L)
CN-COMM
RD
BK BK
BK
BK
BKBK
TERMINAL BLOCK1
TO INDOOR UNITPOWER INPUT
FUS
E(5
A)
FUS
E(5
A)
T2 T1
L2 L1
A2
A1
BRC
OUTDOOR WIRING DIAGRAM 3854A20051J
YLFAN2
CAPACITOR1
CAPACITOR2
OR
YL
OR
OUTDOOR WIRING DIAGRAM 3854A20051F
BL
BK
BK
BLBL
BR
YL
ORFAN
OR
CAPACITOR
REVERSINGVALVE
BK
BK
SW
ITC
HH
IGH
PR
ES
SU
RE
21
BK
OUTDOOR PCB
RUNNING
BL
S
CCOMP
BR
RD
R
CN-CN-
CN-COMP2
CN-
BR
RD
P2(N) P1(L) COMM
RELAYPOWER
06 2
8 14
CAPACITOR
5(COMM)4(N) TERMINAL BLOCK1(L) 2(N)
FU
SE
(5A
)
FU
SE
(5A
)
3(L)
POWER INPUT TO INDOOR UNIT
BR
TERMINAL BLOCK1
CN-4WAY
CN-FAN
OUTDOOR WIRING DIAGRAM 3854A20051L
53(L) 4(N)
BK
RD
WH
R
SCOMP
RUNNINGCAPACITOR
BL
BLBR
BRBK
BK
BK
BK
WH
1(L) 2(N) TERMINAL BLOCK
12
CN-P2(N)
CN-COMP2
CN-FAN
CN-4WAY
CN-THTHERMISTOR
OR
OR
OROR
FAN1
OUTDOOR PCB
MAGNECTICCONTACTOR
CAPACITOR
YLYL
CN-P1(L)
CN-COMM
RD
BK BK
BK
BK
BK
BK
BK
BKBK
TERMINAL BLOCK1
TO INDOOR UNITPOWER INPUT
FUS
E(5
A)
FUS
E(5
A)
T2 T1
L2 L1
A2
A1
BRC
YLFAN2
CAPACITOR1
CAPACITOR2
OR
YL
OR
REVERSINGVALVE
HIGH PRESSSWITCH
Service Manual 51
Schematic Diagram
Electronic Control Device
INDOOR UNIT P.W.B. ASSEMBLYModels: LS-C306MMB0/LS-C362NMD0/LS-H362NMD0
Models: LS-C302MMM0/LS-C306MMM0/LS-C362NMM0/LS-H306MMM0/LS-H362NMM0
Schematic Diagram
52 Room Air Conditioner
Models: LS-C382NMB0/LS-C382NMM0/LS-H382NMB0/LS-H382NMM0
Service Manual 53
Schematic Diagram
OUTDOOR UNIT P.W.B. ASSEMBLY
MODEL SOFT-STARTER
AS-C306 Series X
AS-H306 Series X
AS-C366 Series X
AS-H366 Series X
54 Room Air Conditioner
Schematic Diagram
DISPLAY P.W.B. ASM
Service Manual 55
Troubleshooting Guide
Troubleshooting Guide
INDOOR UNIT OUTDOOR UNIT
INDOOR UNIT OUTDOOR UNIT
HEATEXCHANGE(EVAPORATOR)
HEATEXCHANGE(EVAPORATOR)
HEATEXCHANGE(CONDENSER)
HEATEXCHANGE(CONDENSER)
COMPRESSOR
COMPRESSOR
ACCUMULATOR
GAS SIDE
GAS SIDE
3-WAY VALVE
LIQUID SIDE
LIQUID SIDE
3-WAY VALVE
CAPILLARY TUBE
CAPILLARY TUBE
CHECK VALVE(Heating Model only)
COOLING
HEATING
REVERSINGVALVE(Heating Model Only)
(1) Cooling Only Models
Refrigeration Cycle Diagram
(2) Cooling & Heating Models
56 Room Air Conditioner
Troubleshooting Guide
Pipe Length and the Elevation
* Capicity is based on standard length and maximum allowance length is the basis ofreliability.
* Oil trap should be installed per 5~7 meters.
CAUTION
Outdoor unit
Indoor unit
A
B
AOil trap
Outdoor unit
Indoor unitB
In case more than 5m
30k5/8" 3/8" 7.5 15 30 30
(50Hz, 60Hz)
36k3/4" 3/8" 7.5 20 30 50
(50Hz, 60Hz)
Pipe SizeCapacity(Btu/h)
GAS LIQUID
AdditionalRefrigerant
(g/m)
Max.LengthA (m)
Max.Elevation
B (m)
StandardLength
(m)
Service Manual 57
Troubleshooting Guide
3-way Valve
• Procedure
(1) Confirm that both liquid side and gas sidevalves are set to the open position.– Remove the valve stem caps and confirm that
the valve stems are in the raised position.– Be sure to use a hexagonal wrench to operate
the valve stems.
(2) Operate the unit for 10 to 15 minutes.
(3) Stop operation and wait for 3 minutes, thenconnect the charge set to the service port ofthe Gas side valve.– Connect the charge hose to the service port.
(4) Air purging of the charge hose.– Open the low-pressure valve on the charge set
slightly to air purge from the charge hose.
(5) Set the liquid side valve to the closed posi-tion.
(6) Operate the air conditioner in cooling modeand stop it when the gauge indicates1kg/cm2g.
(7) Immediately set the Gas side valve to theclosed position.– Do this quickly so that the gauge ends up indi-
cating 3 to 5kg/cm2g.
(8) Disconnect the charge set, and mount theLiquid side and Gas side valve’s stem nutsand the service port nut.– Use torque wrench to tighten the service port
nut to a torque of 1.8 kg.m.– Be sure to check for gas leakage.
Lo
Closed
Purge the air
Outdoor unit
Indoor unit Liquid side
Gas side
CLOSE
Open3-Wayvalve
3-Wayvalve
CLOSE
1. Pump down
CAUTION: Do not use the existingcharge set for R-22.
It is necessary to use new charge set forR-410A. The pressure of R-410A is 1.6 timeshigher than that of R-22. Thus, the high pressureside gauge of charge set should be used higherpressure gauge of 50kg/cm2 range.
58 Room Air Conditioner
Troubleshooting Guide
1) Re-air purging(Re-installation)
• Procedure
(1) Confirm that both the liquid side valve and thegas side valve are set to the closed position.
(2) Connect the charge set and a gas cylinder tothe service port of the Gas side valve.– Leave the valve on the gas cylinder closed.
(3) Air purging.– Open the valves on the gas cylinder and the
charge set. Purge the air by loosening the flarenut on the liquid side valve approximately 45°for 3 seconds then closing it for 1 minute;repeat 3 times.
– After purging the air, use a torque wrench totighten the flare nut on liquid side valve.
(4) Check for gas leakage.– Check the flare connections for gas leakage.
(5) Discharge the refrigerant.– Close the valve on the gas cylinder and dis-
charge the refrigerant until the gauge indicates3 to 5 kg/cm2g.
(6) Disconnect the charge set and the gas cylin-der, and set the Liquid side and Gas sidevalves to the open position.– Be sure to use a hexagonal wrench to operate
the valve stems.
(7) Mount the valve stem nuts and the serviceport nut.– Use torque wrench to tighten the service port
nut to a torque of 1.8 kg.m.– Be sure to check for gas leakage.
* CAUTION:Do not leak the gas in the air during AirPurging.
Lo
Closed
OPEN
Closed
Gas cylinder
R407C
Outdoor unit
Indoor unit Liquid side
Gas side
CLOSE
3-Wayvalve
3-Wayvalve
Service Manual 59
Troubleshooting Guide
2) Balance refrigerant of the 3-way valve(Gas leakage)
• Procedure
(1) Confirm that both the liquid side and gas sidevalves are set to the back seat.
(2) Connect the charge set to the 3-way valve’sport.– Leave the valve on the charge set closed.– Connect the charge hose to the service port.
(3) Open the valve (Lo side) on the charge set anddischarge the refrigerant until the gauge indi-cates 0 kg/cm2G.– If there is no air in the refrigerant cycle (the
pressure when the air conditioner is not runningis higher than 1 kg/cm2G), discharge the refrig-erant until the gauge indicates 0.5 to 1kg/cm2G. if this is the case, it will not be neces-sary to apply a evacuatin.
– Discharge the refrigerant gradually; if it is dis-charged too suddenly, the refrigeration oil willalso be discharged.
Lo
Open
Open3-Wayvalve
3-Wayvalve
Gas side
CLOSEOPEN
Outdoor unit
Liquid sideIndoor unit
60 Room Air Conditioner
Troubleshooting Guide
2. Evacuation(All amount of refrigerant leaked)
• Procedure
(1) Connect the vacuum pump to the center hoseof charge set center hose
(2) Evacuation for approximately one hour.– Confirm that the gauge needle has moved
toward -76 cmHg (vacuum of 4 mmHg or less).
(3) Close the valve (Lo side) on the charge set,turn off the vacuum pump, and confirm thatthe gauge needle does not move (approxima-tely 5 minutes after turning off the vacuumpump).
(4) Disconnect the charge hose from the vacuumpump.– Vacuum pump oil.
If the vacuum pump oil becomes dirty ordepleted, replenish as needed.
Lo
Open
Open
Vacuum pump
3-Wayvalve
Outdoor unit
Liquid sideIndoor unit
Gas side
3-Wayvalve
CLOSEOPEN
CAUTION:
Use vacuum pump equipped with check valueapplied to be prevented from flowing back-ward.
Service Manual 61
Troubleshooting Guide
3. Gas Charging(After Evacuation)
• Procedure
(1) Connect the charge hose to the chargingcylinder.– Connect the charge hose which you dis-con-
nected from the vacuum pump to the valve atthe bottom of the cylinder.
– If you are using a gas cylinder, also use ascale and reverse the cylinder so that the sys-tem can be charged with liquid.
(2) Purge the air from the charge hose.– Open the valve at the bottom of the cylinder
and press the check valve on the charge set topurge the air. (Be careful of the liquid refriger-ant). The procedure is the same if using a gascylinder.
(3) Open the valve (Lo side on the charge set andcharge the system with liquid refrigerant.– If the system can not be charged with the spec-
ified amount of refrigerant, it can be chargedwith a little at a time (approximately 150g eachtime) while operating the air conditioner in thecooling cycle; however, one time is not suffi-cient, wait approximately 1 minute and thenrepeat the procedure (pumping down-pin).
(4) Immediately disconnect the charge hose fromthe 3-way valve’s service port.– Stopping partway will allow the gas to be dis-
charged.– If the system has been charged with liquid
refrigerant while operating the air conditionerturn off the air conditioner before disconnectingthe hose.
(5) Mount the valve stem nuts and the serviceport nut.– Use torque wrench to tighten the service port
nut to a torque of 1.8 kg.m.– Be sure to check for gas leakage.
CAUTION:This unit is charged with R-410A.Pay attention not to charge R-22.
\
This is different from previous procedures.Because you are charging with liquid refrigerantfrom the gas side, absolutely do not attempt tocharge with larger amounts of liquid refrigerantwhile operating the air conditioner.
Lo
Chargingcylinder
Outdoor unit
Indoor unit Liquid side
Gas side
CLOSE
Open3-Wayvalve
3-Wayvalve
OPEN
Open
Check valve
(1)
62 Room Air Conditioner
Troubleshooting Guide
Additional gas charging(Gas leakage)• When refrigerant is insufficient by leakage, recharge the unit with the refrigerant up to normal operating suc-
tion pressure.• Use the graph or the equation below to get operating suction pressure according to indoor and outdoor tem-
perature.Suction pressure was measured at 3-way valve service port after operating the unit for 10 minutes.
The method of using graph- Find outdoor temperature.- Find indoor temperature onto the curve of outdoor temperature.
- Read suction pressure at the axis of ordinates.
The method of using equation-. Calculate suction pressure after putting indoor and outdoor temperature into the equation.
13(At operating the Unit for 10 minutes)
Suc
tion
Pre
ssur
e(K
g/cm
2 .g)
Out
door
Tem
p.(˚
C)
Indoor Temp. (˚C)
12
11
10
9
8
7
6
55 10 15 20 25 30 35 40
50˚C
40˚C
30˚C
20˚C
10˚C0˚C
P = 3 + 0.0123 x Tout1.5 + 0.8 x Tin0.5
Where, P : Suction Pressure(kg/cm2.g)Tout : Outdoor Temperature(˚C)Tin : Indoor Temperature(˚C)
Operating Suction Pressure(According to Indoor & Outdoor Temperature)
Service Manual 63
Troubleshooting Guide
Cycle Troubleshooting Guide
Trouble analysis
1. Check temperature difference between intake and discharge air and operating current.
Temp. Difference
Temp. difference : approx. 0°CCurrent : less than 80% of
rated current
Temp. difference : approx. 8°CCurrent : less than 80% of
rated current
Temp. difference : less than 8°CCurrent : over the reated
current
Temp. difference : over 8°C
Operating Current
• All amount of refrigerant leakedout. Check refrigeration cycle.
• Refrigerant leakegeClog of refrigeration cycleDefective compressor
• Excessive amount of refrigerant
• Normal
Notice :Temperature difference between intake and discharge air depends on room air humidity. When the room airhumidity is relativery higher, temperature difference is smaller. When the room air humidity is relatively lower tem-perature difference is larger.
2. Check temperature and pressure of refrigeration cycle.
Notice :1. The suction pressure is usually 4.5~6.0 kg/cm2G(Cooling) at normal condition.2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with
putty.
Suction pressure Temperature(Compared with (Compared with Cause of Trouble Description
the normal value) the normal valve)
Defective compressor Current is low.Defective 4-way reverse valve
Excessive amount of High pressure does not quicklyNormal refrigerant rise at the beginning of
operation.
Insufficient amount of Current is low.Lower Higher refrigerant (Leakage)
Clogging Current is low.
High
Higher
64 Room Air Conditioner
Troubleshooting Guide
Electronic Parts
1. Product does not operate at all.(* Refer to Electronic Control Device drawing and Schematic diagram.)
Turn off Main Power
Turn on Main Power
Does "beeping" sound is made from the Indoor Unit?
Primarily, the operating condition of Micom is OK.Check the voltage of power(About AC 220V/AC240V, 50Hz)
• Main power's voltage• Voltage applied to the unit• Connecting method of Indoor/Outdoor connecting cable• Check PWB Ass'y
- Fuse- Pattern damage- Varistor(ZNR01J)
Check the connection housing for contacting
• Connector related to CN-POWER• Connector related to CN-MOTOR• Connector contacting of Outdoor Fan/Compressor• Display PWB Ass'y Check
Check each load(Indoor/Outdoor Fan Motor,Compressor, Stepping Motor) and contactingcondition of related connector
PCB Board Operation Check
Items
• Power Transformer(Outdoor unit)- Input Voltage- Output Voltage
• IC01D(7812) Output (Outdoor unit)
• IC02D(7805) Output (Outdoor unit)IC04D(7805) Output (Indoor unit)
• IC01A(KIA7036, Reset IC)OSC01B(8MHz) (Indoor unit)
• IC01A(KIA7036, Reset IC)OSC01B(4MHz) (Outdoor unit)
• Replace Trans
• Replace IC01D(Outdoor unit)
• Replace IC02D(Outdoor unit)IC04D(Indoor unit)
• Replace faulty parts
- About AC220V/240V±10% - Check the power voltage- About AC14±3V
• DC +12V
• DC +5V
• Voltage of Micom No. 2, (Indoor unit)(DC +4.5V over) and Soldering condition.No. 5 (Outdoor unit)
Content Remedy
NO YES
(After 10 seconds)
Service Manual 65
Troubleshooting Guide
2. The product is not operate with the remote controller.
Turn on Main Power
While the compressor has been stopped, the compressor does notoperate owing to the delaying function for 3 minutes after stopped.
Caused by other parts except the remote controllerCause by the remote controller
When the mark( ) is displayed in LCD screen, replacebattery.
Check the contact of CN-DISP connector.
When the compressor stopped Indoor Fan is driven by a low speed.At this point the wind speed is not controlled by the remote controller.(When operated in the Sleeping Mode, the wind speed is set to thelow speed by force.)
Check DISP PWB Ass'y- Voltage between CN DISP - : DC +5V
When the detect switch(double key) inside the remotecontroller door is fault, it is impossible to operatetemperature regulating( / ) and wind speed selecting.
Check the connecting circuit between the remote controllerMICOM (No. ) - R17(2Ω) - IR LED - Q1 - R16(2.2KΩ).
Check point
• Check the connecting circuit between PIN -Rø1L(1K) - Cø1L(680PF) - MICOM PIN
• Check Receiver Ass'y
66 Room Air Conditioner
Troubleshooting Guide
3. Compressor/Outdoor Fan are unable to drive.
Turn on Main Power
Operate "Cooling Mode( )" by setting the desired temperature of the remote controller is lessthan one of the indoor temperature by 1°C at least.
When in Air Circulation Mode, Compressor/Outdoor Fan is stopped.
Check the sensor for indoor temperature is attached as close as to be effected by the tempera-ture of Heat Exchanger(EVA).
When the sensor circuit for indoor temperature and connector are in bad connection or are notengaged, Compressor/Outdoor Fan is stopped.
• Check the related circuit of R02H(12.1K), R04H(6.2K), Micom (No.3.4) (Indoor unit).• Check the related circuit of R04H (6.2K) Micom (No.3) (Output unit).• Check the indoor temperature sensor is disconnected or not(About 10kΩ / at 25°C).
Turn off Main Power
• Check the electrical wiring diagram of outdoor side.• Check the abnormal condition for the component of Compressor/Outdoor Fan Motor.• Check the "open" or "short" of conmecting wires between indoor and outdoor.
Check Relay(RY - COMP2) for driving compressor.(Outdoor unit)
• When the power(About AC220V/240V) is applied to the connecting wire terminal supporttransferred to compressor, PWB Ass'y is normal.
• Check the circuit related to the relay.
Check point COMP ON COMP OFF
Between Micom(No.15) and GND DC5V DC0V
Between Relay (G5N-1A) (No.1)DC12V DC0Vand (G5N-1A) (No.4)
Between CN-COMP2 AC 220~240V Below AC 10Vand CN-POWER 2(N)
Service Manual 67
Troubleshooting Guide
Check the TRIAC high speed operation by Remocon.(The Indoor Fan Motor is connected)
Turn off Main power
Check the connection of CN-MOTOR
Check the Fan Motor
Check the Fuse(AC250V/T2A)
Turn ON Main Power
Check the related circuit of indoor Fan Motor.
• The pin NO 63 of Micom, and the part for driving TRIAC(the input andoutput signal of IC01M, PIN NO 2, 15)
• Check the pattern• Check the TRIAC
- TRIAC Open: Indoor Fan Motor never operate- TRIAC short: Indoor Fan Motor always operates in case of ON or OFF.
4. When indoor Fan does not operate.
The voltage of PIN NO 1(blue) and 3(yellow) of CN-MOTOR.
About AC 180V over About AC 50V over
TRIAC is not damaged TRIAC Check
68 Room Air Conditioner
Troubleshooting Guide
6. When Heating does not operate
Operate “Heating Mode( )” by setting the desired temperature of theremote controller is higher than one of the indoor temperature by 2°Cat least.
In heating Mode, the indoor fan operates in case the pipe temperatureis higher than 28°C.
Turn ON Main Power
• Confirm that the Vertical Louver is normally geared with the shaft ofStepping Motor.
• If the regular torque is detected when rotating the Vertical Louver withhands Normal
• Check the connecting condition of CN-U/D Connector• Check the soldering condition(on PWB) of STEP(U/D) Connector
If there are no problems after above checks
• Confirm the assembly conditions that are catching and interfering partsin the rotation radial of the Vertical Louver
5. When Vertical Louver does not operate.
Check the operating circuit of the Vertical Louver
• Confirm that there is DC +12V between pin (RED) of CN-U/D andGND.
• Confirm that there is a soldering short at following terminals.- Between , , and of MICOM- Between , , and of IC01M- Between , , and of IC01M
58 59 60 61
Service Manual 69
Troubleshooting Guide
Check the connector of intake and pipe sensor(thermistors)
• Check the related circuit of R02H(12.1K), R04H(6.2K), R03H(1.0K),Micom(No. 3, 4).
• Check the indoor room temperature is disconnected or not (about10KΩ/at 25°C).
• Check the indoor pipe temperature is disconnected or not (about5KΩ/at 25°C).
Check the DC voltage on the PWB ASS’Y
• The details of check are as followings
CHECK POINT
Between Micom(No.15) and GND
Between RY-COMP.(No.1) and (No.4)
BetweenCN-COMP2 andCN-POWER 2(N)
COMP. ON
DC5V
About DC12V
AC 220~240V
COMP. OFF
DC0V
DC0V
Below AC10V
CHECK POINT
Between Micom(No.13) and GND
Between RY-4WAY(No.1) and (No.4)
Between CN-4WAYand
CN-POWER 2(N)
COMP. ON
DC5V
About DC12V
AC 220~240V
COMP. OFF
DC0V
DC0V
Below AC10V
CHECK POINT
Between Micom(No.14) and GND
Between RY-FAN(No.1) and (No.4)
Between CN-FANand
CN-POWER 2(N)
COMP. ON
DC5V
About DC12V
AC 220~240V
COMP. OFF
DC0V
DC0V
Below AC10V
• Comp Relay.
• 4 way Relay
• Outdoor fan Relay
Turn off Main Power
• Check the electrical wiring diagram of outdoor side.• Check the abnormal condition for the component of
Compressor/Outdoor Fan Motor, 4 way.• Check the "open" or "short" of connecting wires between indoor and
outdoor.
70 Room Air Conditioner
Exploded View
Exploded View
268712
135315152313
267110
131414
354212
131413
W0CZZ
146811-1
146811-2
152302
152302
359011
135311
342801
135301
266090268714
263230
249951
359012
342800
352392
346810
733010
135313-1
135313-2
135314
135312
159830
352391
131411
131412
131410
159901
352150
35211B
1. Indoor Unit Models: 30k SERIES
Service Manual 71
Exploded View
Models: 36k SERIES, 38k SERIES
268712
135315152313
135314
267110
354212
W0CZZ
152302-1
152302-2
135311
35211B
342801
135301
159901
266090268714
263230
131414
131413
352150
146811-1
146811-2
146811-3
249951
359012
359011
342800
131411
131412
352392 346811
733010
135313-1
135313-2
135313-3
135312
159830
352391
131410
152302-1
72 Room Air Conditioner
Exploded View
447910
550140
552560552202
561410
552116
566000554160
649950
552203-2
552203-1
435512
554031
137213
137213
559010
435301
403410
546810
549610
437210
435511
552111
552102-1
552102-2552201-1
263230668711
261704
W0CZZ-2W0CZZ-1 W0CZZ-2
W6920
2. Outdoor Unit Models: 30k SERIES
Service Manual 73
Exploded View
137213
435512-1
435511
435512-2
559010
546810
566001
649950
649950
W0CZZ-2
W0CZZ-1
W0CZZ-3
263230
435301
552203-2
552203-1
566000
552202
554160
554031-1
554031-3
554031-2
522201
430410
447910
2. Outdoor Unit Models: 36k SERIES, 38k SERIES
74 Room Air Conditioner
Replacement Parts List
Replacement Parts ListIndoor Unit
131410 CHASSIS ASSEMBLY 3141A10001B 3141A10001B 3141A10001B 3141A10001B R131411 GUIDE ASSY 4975A20003A 4975A20003A 4975A20003A 4975A20003A R131412 CHASSIS 3140A20002A 3140A20002A 3140A20002A 3140A20002A R131413 CHASSIS 3140A10006D 3140A10006D 3140A10006D 3140A10006D R131414 GUIDE ASSY 4975A20001B 4975A20001B 4975A20001B 4975A20001B R135311 GRILLE ASSEMBLY,DISCHARGE(INDOOR) 3531A10056C 3531A10056C 3531A10056C 3531A10056C R135312 GRILLE ASSEMBLY,FRONT(SINGLE) 3531A10250D 3531A10058V 3531A10058T 3531A10058T R
135313-1 GRILLE ASSEMBLY,INLET 3531A10060M 3531A10060M 3531A10060M 3531A10060M R135313-2 GRILLE ASSEMBLY,INLET 3530A20088A 3530A20088A 3530A20088A 3530A20088A R135314 GRILLE INLET 3530A20087A 3530A20087A 3530A20087A 3530A20087A R135315 GRILLE ASSEMBLY,FRONT(INDOOR) 3531A10058T 3531A10250F 3531A10250H 3531A10250Q R
146811-1 MOTOR ASSEMBLY,STEP 4681AR2727B 4681AR2727B 4681AR2727B 4681AR2727B R146811-2 MOTOR ASSY,STEP 4681AR2727M 4681AR2727M 4681AR2727M 4681AR2727M R152302 FILTER(MECH),A/C 5230A10001A 5230A10001A 5230A10001A 5230A10001A R152313 FILTER ASSEMBLY,DEODORIZER 5231A20032D 5231A20032F 5231A20032D 5231A20032D R159830 AIR CLEANER ASSEMBLY 5983A10002N - 5983A10002L 5983A10002R R159901 VANE,HORIZONTAL 5990A20003A 5990A20003A 5990A20003A 5990A20003A R249951 CONTROL BOX ASSEMBLY,INDOOR 4995A20337Z 4995A20183B 4995A10115B 4995A20337S R263230 THERMISTOR ASSEMBLY 6323A20002C 6323A20002C 6323A20002C 6323A20002C R266090 H.V ASSY 6609A10003C - 6609A10003C 6609A10003C R267110 REMOTE CONTROLLER ASSEMBLY 6711A20077U 6711A20067D 6711A20077M 6711A20091G R268712 PWB(PCB) ASSY,DISPLAY 6871A20108B 6871A20108A 6871A20108B 6871A20108B R268714 PWB(PCB) ASSEMBLY,MAIN 6871A10114R 6871A10012U 6871A10114T 6871A10114K R342800 BEARING 4280A20003A 4280A20003A 4280A20003A 4280A20003A R342801 BEARING 4280A20001A 4280A20001A 4280A20001A 4280A20001A R346810 MOTOR ASSEMBLY,INDOOR 4681AP2632E 4681AP2632D 4681AP2632D 4681AP2632D R35211B TUBE ASSEMBLY , TUBING 5211A20200B 5211A20200B 5211A20200B 5211A20200A R352150 HOSE ASSY,DRAIN 5251AR1222P 5251AR1222P 5251AR1222P 5251AR1222P R352391 AIR GUIDE ASSEMBLY 5239A10001A 5239A10001A 5239A10001A 5239A10001A R352392 AIR GUIDE ASSEMBLY 5239A10001B 5239A10001B 5239A10001B 5239A10001B R354212 EVAPORATOR ASSEMBLY,FINAL 5421A20057A 5421A20057A 5421A20057C 5421A20057C R
359011-1 FAN ASSY,CROSS FLOW 5901AR2441F 5901AR2441G 5901AR2441G 5901AR2441G R359011-2 FAN ASSY,CROSS FLOW 5901AR2441G 5901AR2441F 5901AR2441F 5901AR2441F R733010 PLATE ASSY,INSTALL 3301A10001A 3301A10001A 3301A10001A 3301A10001A RW0CZZ CAPACITOR, DRAWING 3H01487G 3H01487G 3H01487G 3H01487G R
LOCATIONNO.
DESCRIPTION REMARKSPART NO.
LS-C302MMM0 LS-C306MMB0 LS-C306MMM0 LS-H306MMM0
NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer's request.(GCSC WEBSITE http://biz.LGservice.com)
Service Manual 75
Replacement Parts List
Indoor Unit
131410 CHASSIS ASSEMBLY 3141A10001A 3141A10001B 3141A10001A 3141A10001A R131411 GUIDE ASSY 4975A20003A 4975A20003A 4975A20003A 4975A20003A R131412 GUIDE ASSY 4975A20001C 4975A20001B 4975A20001A 4975A20001A R131413 CHASSIS 3140A20002A 3140A20002A 3140A20002A 3140A20002A R131414 CHASSIS 3140A10006E 3140A10006D 3140A10006C 3140A10006C R135311 GRILLE ASSEMBLY,DISCHARGE(INDOOR) 3531A10056G 3531A10056C 3531A10056E 3531A10056E R135312 GRILLE ASSEMBLY,FRONT(INDOOR) 3531A10058Y 3531A10058T 3531A10250F 3531A10058U R
135313-1 GRILLE ASSEMBLY,INLET 3531A10060Q 3531A10060M 3531A10060N 3531A10060N R135313-2 GRILLE ASSEMBLY,INLET 3530A20088B 3530A20088A 3530A20088A 3530A10170A R135313-3 GRILLE ASSEMBLY,INLET 3530A20087B 3530A10170A 3530A10170A 3530A20088A R135314 GRILLE,INLET 3530A10170B 3530A20087A 3530A20087A 3530A20087A R135315 GRILLE ASSEMBLY,FRONT(INDOOR) 3531A10058Y 3531A10058U 3531A10058W 3531A10058U R
146811-1 MOTOR ASSEMBLY,STEP 4681AR2727B 4681AR2727B 4681AR2727B 4681AR2727B R146811-2 MOTOR ASSY,STEP 4681AR2727M 4681AR2727M 4681AR2727M 4681AR2727M R152302-1 FILTER(MECH),A/C 5230A10001A 5230A10001A 5230A10001A 5230A10001A R152302-2 FILTER(MECH),A/C 5230A10002A 5230A10002A 5230A10002A 5230A10002A R152313 FILTER ASSEMBLY,DEODORIZER 5231A30001A 5231A20032D 5231A20032F 5231A20032D R159830 AIR CLEANER ASSEMBLY 5983A10002C 5983A10002R 5238A10002A 5983A10002L R159901 VANE,HORIZONTAL 5990A20002B 5990A20003A 5990A20002A 5990A20002A R249951 CONTROL BOX ASSEMBLY,INDOOR 4995A20133N 4995A20337S 4995A20337K 4995A20337P R263230 THERMISTOR ASSEMBLY 6323A20002C 6323A20002C 6323A20002C 6323A20002C R266090 H.V ASSY 6609A10003C 6609A10003C - 6609A10003C R267110 REMOTE CONTROLLER ASSEMBLY 6711A20025V 6711A20091G 6711A20067D 6711A20077M R268712 PWB(PCB) ASSY,DISPLAY 6871A20108B 6871A20108B 6871A20108A 6871A20108B R268714 PWB(PCB) ASSY,MAIN 6871A10012H 6871A10114K 6871A10152B 6871A10152F R342800 BEARING 4280A20003A 4280A20003A 4280A20003A 4280A20003A R342801 BEARING 4280A20001A 4280A20001A 4280A20001A 4280A20001A R346811 MOTOR ASSY,INDOOR 4681AP2632G 4681AP2632G 4681AP2632G 4681AP2632G R352150 HOSE ASSY,DRAIN 5251AR1222P 5251AR1222P 5251AR1222P 5251AR1222P R35211B TUBE ASSEMBLY , TUBING 5211A20200C 5211A20200A 5211A20200C 5211A20200C R352391 AIR GUIDE ASSEMBLY 5239A10001C 5239A10001A 5239A10001C 5239A10001C R352392 AIR GUIDE ASSEMBLY 5239A10001D 5239A10001B 5239A10001D 5239A10001D R354210 EVAPORATOR ASSEMBLY,FIRST 5421A20058B 5421A20058C 5421A20058B 5421A20058D R359011 FAN ASSY,CROSS FLOW 5901AR2441H 5901AR2441G 5901AR2441H 5901AR2441H R359012 FAN ASSY,CROSS FLOW 5901AR2441J 5901AR2441F 5901AR2441J 5901AR2441J R733010 PLATE ASSY,INSTALL 3301A10001A 3301A10001A 3301A10001A 3301A10001A RW0CZZ CAPACITOR, DRAWING 3H01487G 3H01487G 3H01487G 3H01487G R
LOCATIONNO.
DESCRIPTION REMARKSPART NO.
LS-C362NMD0 LS-C362NMM0 LS-C382NMB0 LS-C382NMM0
NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer's request.(GCSC WEBSITE http://biz.LGservice.com)
76 Room Air Conditioner
Replacement Parts List
Indoor Unit
131410 CHASSIS ASSEMBLY 3141A10001A 3141A10001A 3141A10001A 3141A10001A R131411 GUIDE ASSY 4975A20003A 4975A20003A 4975A20003A 4975A20003A R131412 GUIDE ASSY 4975A20001C 4975A20001A 4975A20001A 4975A10001A R131413 CHASSIS 3140A20002A 3140A20002A 3140A20002A 3140A20002A R131414 CHASSIS 3140A10006C 3140A10006C 3140A10006C 3140A10006C R135311 GRILLE ASSEMBLY,DISCHARGE(INDOOR) 3531A10056G 3531A10056E 3531A10056E 3531A10056E R135312 GRILLE ASSEMBLY,FRONT(INDOOR) 3531A10058Y 3531A10250E 3531A10058U 3531A10058U R
135313-1 GRILLE ASSEMBLY,INLET 3531A10060Q 3531A10060N 3531A10060N 3531A10060N R135313-2 GRILLE ASSEMBLY,INLET 3530A20088B 3530A20088A 3530A20087A 3530A20087A R135313-3 GRILLE ASSEMBLY,INLET 3530A10170B 3530A10170A 3530A10170A 3530A10170A R135314 GRILLE,INLET 3530A20087B 3530A20087A 3530A20088A 3530A20088A R135315 GRILLE ASSEMBLY,FRONT(INDOOR) 3531A10250P 3531A10058U 3531A10250E 3531A10250J R
146811-1 MOTOR ASSEMBLY,STEP 4681AR2727B 4681AR2727B 4681AR2727B 4681AR2727B R146811-2 MOTOR ASSY,STEP 4681AR2727M 4681AR2727M 4681AR2727M 4681AR2727M R152302-1 FILTER(MECH),A/C 5230A10001A 5230A10001A 5230A10001A 5230A10001A R152302-2 FILTER(MECH),A/C 5230A10002A 5230A10002A 5230A10002A 5230A10002A R152313 FILTER ASSEMBLY,DEODORIZER 5231A30001A 5231A20032D 5231A20032D 5231A20032D R159830 AIR CLEANER ASSEMBLY 5983A10002C 5983A10002N 5983A10002N 5983A10002L R159901 VANE,HORIZONTAL 5990A20002B 5990A20002A 5990A20002A 5990A20002A R249951 CONTROL BOX ASSEMBLY,INDOOR 4995A20133W 4995A20183H 4995A20183H 4995A20337R R263230 THERMISTOR ASSEMBLY 6323A20002C 6323A20002C 6323A20002C 6323A20002C R266090 H.V ASSY 6609A10003C 6609A10003C - 6609A10003C R267110 REMOTE CONTROLLER ASSEMBLY 6711A20025W 6711A20073Y 6711A20073Y 6711A20077N R268712 PWB(PCB) ASSY,DISPLAY 6871A20108B 6871A20108B 6871A20108B 6871A20108B R268714 PWB(PCB) ASSY,MAIN 6871A10012G 6871A10114M 6871A10114M 6871A10152H R342800 BEARING 4280A20003A 4280A20003A 4280A20003A 4280A20003A R342801 BEARING 4280A20001A 4280A20001A 4280A20001A 4280A20001A R346811 MOTOR ASSY,INDOOR 4681AP2632G 4681AP2632G 4681AP2632G 4681AP2632G R352150 HOSE ASSY,DRAIN 5251AR1222P 5251AR1222P 5251AR1222P 5251AR1222P R35211B TUBE ASSEMBLY , TUBING 5211A20200C 5211A20200C 5211A20200C 5211A20200C R352391 AIR GUIDE ASSEMBLY 5239A10001C 5239A10001C 5239A10001C 5239A10001C R352392 AIR GUIDE ASSEMBLY 5239A10001D 5239A10001D 5239A10001D 5239A10001D R354210 EVAPORATOR ASSEMBLY,FIRST 5421A20058B 5421A20058B 5421A20058B 5421A20058D R359011 FAN ASSY,CROSS FLOW 5901AR2441H 5901AR2441H 5901AR2441H 5901AR2441H R359012 FAN ASSY,CROSS FLOW 5901AR2441J 5901AR2441J 5901AR2441J 5901AR2441J R733010 PLATE ASSY,INSTALL 3301A10001A 3301A10001A 3301A10001A 3301A10001A RW0CZZ CAPACITOR, DRAWING 3H01487G 3H01487G 3H01487G 3H01487G R
LOCATIONNO.
DESCRIPTION REMARKSPART NO.
LS-H362NMD0 LS-H362NMM0 LS-H382NMB0 LS-H382NMM0
NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer's request.(GCSC WEBSITE http://biz.LGservice.com)
Service Manual 77
Replacement Parts List
Outdoor Unit
137213-1 PANEL ASSEMBLY, SIDE 1A00202F 1A00202F 1A00202F 1A00202F R137213-2 PANEL ASSEMBLY, SIDE 3A02284U 3A02284U 3A02284U 3A02284U R261704 TRANSFORMER, POWER 6170A20004B 6170A20004B 6170A20004B 6170A20004B R263230 THERMISTOR ASSEMBLY 3Q35015P 6323A20002C 6323A20002C 6323A20002C R430410 BASE ASSY,WELD[OUTDOOR] 3041A30003Y 3041A30003Y 3041A30003Y 3041A30003Y R435301 GRILLE,DISCHARGE 3530A20007J 3530A20007J 3530A20007J 3530A20007J R435511 COVER ASSEMBLY,CONTROL(OUTDOOR) 3A01919B 3A01919B 3A01919B 3A01919B R435512 COVER ASSEMBLY,TOP(OUTDOOR) 3H03266H 3H03266H 3H03266H 3H03266H R437210 PANEL ASSEMBLY,FRONT SUB 2A01041M 2A01041M 2A01041M 2A01041M R447910 BARRIER ASSEMBLY,OUTDOOR 2A01043L 2A01043L 2A01043L 2A01043L R546810 MOTOR ASSEMBLY,OUTDOOR 4681A20008N 4681A20008N 4681A20008N 2H02113U R549610 MOUNT, MOTOR 2A01035M 2A01035M 2A01035M 2A01035V R550140 ISOLATOR, COMP 4H00637A 4H00637A 4H00637A 4H00637A R552111 TUBE ASSY,CAPILLARY 5211A20034F 5211A20034G 5211A20034G - R552116 TUBE ASSY,REVERSING 5221AR2014X - - - R552201 VALVE,CHECK 3A01020H - - - R552202 VALVE,REVERSING 3A02027B - - - R
552203-1 VALVE,SERVICE 2A00393Q 2A00393Q 2A00393Q 2A00392N R552203-2 VALVE,SERVICE 2A00392N 2A00392N 2A00392N 2A00393Q R552560 MUFFLER ASSY 5257A30001N 5257A30001P 5257A30001P - R554031 CONDENSER ASSEMBLY,BENT 6140AP2096X 6140AP2096X 6140AP2096X 6140AP2096X R554160 COMPRESSOR ASSEMBLY,FINAL 5417A90001D 5417A90001D 5417A90001D 5416AR1411J R559010 FAN ASSEMBLY,PROPELLER 1A00195B 1A00195B 1A00195B 1A00195A R561410 COIL ASSEMBLY,REVERSING VALVE 3A02028Y - - - R561410 COIL ASSEMBLY,REVERSING VALVE 3A02028B - - - R566000 SWITCH , PRESSURE 3A02524A - - - R649950 CONTROL BOX ASSEMBLY,OUTDOOR 4995A20075R 4995A20075J 4995A20075J 4995A20075G R668711 PWB(PCB) ASSY,MAIN(OUTDOOR) 6871A20105A 6871A20105D 6871A20105D 3301A10001A R
W0CZZ-1 CAPACITOR,DRAWING 2A00986S 2A00986S 2A00986S 2A00986A RW0CZZ-2 CAPACITOR,DRAWING 2A00986D 2A00986D 2A00986D 2A00986D R
W6920 RELAY 6920AP3400A 6920AP3400A 6920AP3400A 6920AP3400A R
LOCATIONNO.
DESCRIPTION REMARKSPART NO.
LS-H306MMM0 LS-C306MMB0 LS-C306MMM0 LS-C302MMM0
NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer's request.(GCSC WEBSITE http://biz.LGservice.com)
78 Room Air Conditioner
Replacement Parts List
Outdoor Unit
137213 PANEL , SIDE 3A01055Z 3A01055Z 3A01055Z 3A01055Z R261704 TRANSFORMER , POWER 6170A20004B 6170A20004B 6170A20004B 6170A20004B R263230 THERMISTOR ASSEMBLY 6323A20002C 6323A20002C 6323A20002C 6323A20002C R430410 BASE ASSY,WELD[OUTDOOR] 3A01517W 3A01517W 3A01517W 3A01517W R435301 GRILLE ASSEMBLY,DISCHARGE(OUTDOOR) 2A00144Y 2A00144Y 2A00144Y 2A00144Y R435511 COVER ASSY,CONTROL(OUTDOOR) 3A01293Z 3A01293Z 3A01293Z 3A01293Z R
435512-1 COVER ASSY,TOP(OUTDOOR) 2A00273A 2A00273A 2A00273A 2A00273A R435512-2 COVER ASSY,TOP(OUTDOOR) 3A01651A 3A01651A 3A01651A 3A01651A R437210 PANEL ASSEMBLY,FRONT SUB 2A00251Z 2A00251Z 2A00251Z 2A00251Z R447910 BARRIER ASSY,OUTDOOR 4761A90001A 4761A90001A 4761A90001A 4761A90001A R546810 MOTOR ASSEMBLY,OUTDOOR 2H00430J 2H00430J 2H00430J 2H00430J R550140 ISOLATOR,COMP 4H00637A 4H00637A 4H00637A 4H00637A R552111 TUBE ASSY , CAPILLARY 5211A30134D 5211A30134D 5211A30134D 5211A20034D R552116 TUBE ASSY , REVERSING 5211A20032L 5211A20032L 5211A20032L 5221A20032L R
552203-1 VALVE,CHECK 5220A30003A 5220A30003A 5220A30003A 5220A30003A R552203-2 VALVE,CHECK 3A01020H 3A01020H 3A01020H 3A01020H R552202 VALVE,REVERSING 3A02027B 3A02027B 3A02027B 3A02027B R
552203-1 VALVE,SERVICE 2A00393A 2A00393A 2A00393A 2A00393A R552203-2 VALVE,SERVICE 2A00499A 2A00499A 2A00499A 2A00499A R552560 MUFFLER ASSY 5257A30001V 5257A30001V 5257A30001V 5257A30001V R
554031-1 CONDENSER ASSEMBLY,BENT 5403A20006H 5403A20006H 5403A20006N 5403A20006A R554031-2 CONDENSER ASSEMBLY,BENT 5403A20006N 5403A20006N 5403A20006H 5403A20006E R554160 COMPRESSOR ASSEMBLY 2A01196B 2A01196B 2A01196B 2A01196B R559010 FAN ASSY,PROPELLER 1H00156B 1H00156B 1H00156B 1H00156B R561410 COIL ASSEMBLY,REVERSING VALVE 3A02028Y 3A02028Y 3A02028Y 3A02028Y R566000 SWITCH,PRESSURE 3A02524A 3A02524A 3A02524A 3A02524A R566001 SWITCH,MAGNET 6600B000036 6600B000036 6600B000036 6600B000036 R649950 CONTROL BOX ASSEMBLY,OUTDOOR 4995A20075P 4995A20075P 4995A20075P 4995A20075P R668711 PWB(PCB) ASSY,MAIN(OUTDOOR) 6871A20105E 6871A20105E 6871A20105E 6871A20105E R
W0CZZ-1 CAPACITOR,DRAWING 2A00986S 2A00986S 2A00986S 2A00986S RW0CZZ-2 CAPACITOR,DRAWING 3A02157A 3A02157A 3A02157A 3A02157A R
LOCATIONNO.
DESCRIPTION REMARKSPART NO.
LS-H382NMM0 LS-H382NMB0 LS-H362NMM0 LS-H362NMD0
NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer's request.(GCSC WEBSITE http://biz.LGservice.com)
Service Manual 79
Replacement Parts List
Outdoor Unit
137213 PANEL , SIDE 3A01055Z 3A01055Z 3A01055Z 3A01055Z R261704 TRANSFORMER , POWER 6170A20004B 6170A20004B 6170A20004B 6170A20004B R263230 THERMISTOR ASSEMBLY 6323A20002C 6323A20002C 6323A20002C 3Q35015G R430410 BASE ASSY,WELD[OUTDOOR] 3A01517W 3A01517W 3A01517W 3A01517W R435301 GRILLE ASSEMBLY,DISCHARGE(OUTDOOR) 2A00144Y 2A00144Y 2A00144Y 2A00144Y R435511 COVER ASSY,CONTROL(OUTDOOR) 3A01293Z 3A01293Z 3A01293Z 3A01293Z R
435512-1 COVER ASSY,TOP(OUTDOOR) 2A00273A 2A00273A 2A00273A 3A01651A R435512-2 COVER ASSY,TOP(OUTDOOR) 3A01651A 3A01651A 3A01651A 3A01651A R437210 PANEL ASSEMBLY,FRONT SUB 2A00251Z 2A00251Z 2A00251Z 2A00251Z R447910 BARRIER ASSY,OUTDOOR 4761A90001A 4761A90001A 4761A90001A 4761A90001A R546810 MOTOR ASSEMBLY,OUTDOOR 2H00430J 2H00430J 2H00430J 2H00430J R550140 ISOLATOR,COMP 4H00637A 4H00637A 4H00637A 4H00637A R552111 TUBE ASSY , CAPILLARY - - - - R552116 TUBE ASSY , REVERSING - - - - R
552203-1 VALVE,CHECK - - - - R552203-2 VALVE,CHECK - - - - R552202 VALVE,REVERSING - - - - R
552203-1 VALVE,SERVICE 2A00393A 2A00393A 2A00393A 2A00393A R552203-2 VALVE,SERVICE 2A00499A 2A00499A 2A00499A 2A00499A R552560 MUFFLER ASSY 5257A30001T 5257A30001T 5257A30001T 5257A30001T R
554031-1 CONDENSER ASSEMBLY,BENT 5403A20006H 5403A20006H 5403A20006H 5403A20006C R554031-2 CONDENSER ASSEMBLY,BENT 5403A20006J 5403A20006J 5403A20006J 5403A20006D R554160 COMPRESSOR ASSEMBLY 2A01196B 2A01196B 2A01196B 2A01196B R559010 FAN ASSY,PROPELLER 1H00156B 1H00156B 1H00156B 1H00156B R561410 COIL ASSEMBLY,REVERSING VALVE - - - - R566000 SWITCH,PRESSURE - - - - R566001 SWITCH,MAGNET 6600B000036 6600B000036 6600B000036 6600B000036 R649950 CONTROL BOX ASSEMBLY,OUTDOOR 4995A20075M 4995A20075M 4995A20075M 4995A20075M R668711 PWB(PCB) ASSY,MAIN(OUTDOOR) 6871A20105D 6871A20105D 6871A20105D 6871A20105D R
W0CZZ-1 CAPACITOR,DRAWING 3A02157A 3A02157A 3A02157A 3A02157A RW0CZZ-2 CAPACITOR,DRAWING 2A00986S 2A00986S 2A00986S 2A00986S R
LOCATIONNO.
DESCRIPTION REMARKSPART NO.
LS-C382NMM0 LS-C382NMB0 LS-C362NMM0 LS-C362NMD0
NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer's request.(GCSC WEBSITE http://biz.LGservice.com)
P/No.: 3828A20347E
January, 2005Printed in Korea