troubleshooting. 5wss troubleshooting error codefaulty indication e1room sensor contact loose...

Technical Training 2007Technical Training 2007

TROUBLESHOOTINGTROUBLESHOOTING


5WSS TROUBLESHOOTING

ERROR CODE FAULTY INDICATION

E1 ROOM SENSOR CONTACT LOOSE

E2 INDOOR COIL SENSOR CONTACT LOOSE

E3 WATER OUTLET SENSOR CONTACT LOOSE

E4 COMPRESSOR OVERLOAD

E5 GAS LEAK

E6 PUMP FAULT

E9 WATER OUTLET TEMPERATURE FAULTY

Wired Controller


Wireless Controller

5WMWS-GR Series


5CKWS-AR


5CKWS-CR


5WSS TROUBLESHOOTING

E1

E2

Room Sensor Contact Loose

Indoor Coil Sensor Contact Loose

Indoor Coil Sensor

Room Sensor

Check whether connection loose?

Check wire exposed and broken?

Wire Exposed and broken?


E3 Water Outlet Sensor Contact Loose

Water Outlet Sensor

Check the pin loose?

Check wire exposed and broken?

Check whether connection loose?


Model Components

5WSS07~25AR HP switch only

5WSS30~60AR HP & LP Switch

Safety Devices


5WSS07~25AR

E4 Compressor Overload

HP tripped

1. Water Flow

2. Water Temp

High (600 psig)

Cooling & Heating Mode


5WSS30~60AR


Power on the unit

Check whether is HP or LP tripped

Pressure at access valve at condenser out?

Pressure at Gas/ Liquid Valve?

Cooling Mode

1. Water Flow

2. Water Temp

High (600 psig)1. Gas Leak

2. Liquid/ Gas Valve not open

3. Cap. tube choked

Low (7 psig)


5WSS40~60AR


Power on the unit

Check whether is HP or LP tripped

Pressure at access valve at Evaporator In?

Pressure at Gas/ Liquid Valve?

Heating Mode

1. Water Flow

2. Water Temp

High (600 psig)

1. Gas Leak


Low (7 psig)


E5 Gas Leak

Temp > 24°C for 5 min?

Check indoor coil temperature (system on for 30 mins)

YesNo

Yes

Normal

Operation

1. Check for leakage

2. Low Charge (check pressure)

3. Indoor coil sensor loosen from coil (rare)

Normal

Operation

No

Cooling or Heating?

Cool Heat

Temp > 20°C for 5 min?


E6 Pump Fault

WTP

WTP connection loose?

Water is flowing out (drain pipe)?

Yes

No

Yes

Change it

Connect it

No

Fix it

Pump suction port choked?

Yes Clean drain pan

Water level switch spoil (rare)?

Yes

No

Applicable for CK unit only


E9 Water Outlet Temp Faulty

Cooling or Heating?

Water Inlet Temp too high (out of operating range)?

Heat

Operating Range

Unit Not Start (20s) :

13°C < Temp <45°C

Unit Start:

15°C < Temp < 52°C

Cool

1. Cooling tower on?

2. Pump on?

Operating Range

Unit Not Start (20s) :

10°C < Temp <35°C

Unit Start:

6°C < Temp < 32°C

No

Water Flow?

1. Pump on?

2. Strainer choked?

3. Valves open?

No

Yes

Yes

No


WH TROUBLESHOOTING

Error Code Description

E1 Water Level Switch error

E2 Compressor low pressure protection

E3 Compressor high pressure protection

E4 Return air sensor missing or damaged

E5 Indoor coil sensor missing or damaged

E6 Water outlet sensor missing or damaged

E7 Suction sensor missing or damaged

E8 Gas Leak

E9 Coil temperature exceed 68°C

EA Pump fault

Eb Temperature of water entering too high or low

Ec Suction Temperature too low

WH11/12/15/20B/BR


E0 Indoor coil 1 sensor missing or damaged

E1 Indoor coil 2 sensor missing or damaged

E2 Return air sensor missing or damaged

E3 Water outlet 1 sensor missing or damaged

E4 Water outlet 2 sensor missing or damaged

E6 Suction 1 sensor missing or damaged

E7 Suction 2 sensor missing or damaged

Eb Compressor 1 gas leaking

Ec Compressor 2 gas leaking

Ed Compressor 1 indoor coil frosting

EE Networking Communication Port Error

Ef Compressor 2 indoor coil frosting

F0 Water Flow Failure Input Contact

F1 Compressor 2 low pressure failure input contact

F2 Compressor 2 high pressure failure input contact

F3 Water level failure input contact

F4 Compressor 2 overload failure input contact

F5 Compressor 1 overload failure input contact

F6 Fan overload failure input failure

F7 Water pump overload failure input contact

F8 Compressor 1 high pressure failure input contact

F9 Compressor 1 low pressure failure input contact

FA Electrical heater overload failure input contact

Fb Entering water temperature 1 failure

Fd Entering water temperature 2 failure

FE Suction temperature too low

WH25~70B/BR


APM01CB- Single Compressor APM02D-Twin Compressor

WH PCB Board

CN4- APW04ACN6- APW04A CN1- SLM15A

CN2- SLM15A


E1 Water Level Switch Error

Water Level Switch

Check connectivity of Water Level Switch

Confirm Spoil? Change it

Yes

Normal Operation

No

Model: WH11/12/15/20B/BR

WH TROUBLESHOOTING


E2 Compressor Low Pressure Protection

1. Gas Leak


3. Cap. tube choked

Low (7 psig)

LP tripped


E3 Compressor High Pressure Protection

HP tripped

1. Water Flow

2. Water Temp

High (470 psig)


E4 Return Air Sensor Missing or Damaged

Check whether missing or damaged?

Indoor Coil Sensor Missing or Damaged

E6 Water Outlet Sensor Missing or Damaged

E7 Suction Sensor Missing or Damaged

Fix or Change it

E5


E8 Gas Leak

Comp run 5 mins

Tin coil Tr – 3°C (Cooling)Tin coil Tr + 3°C (Heating)

No

Yes

1. Check for leakage



Normal

Operation


EA Pump Fault

Water is flowing out (drain pipe)?

Yes

No

Yes

Change it

Connect it

No

Fix it

Pump suction port choked?

Yes Clean drain pan

Water level switch spoil (rare)?

Yes

No

WTP connection loose?

Optional Items


Eb Temperature of Water Entering too high or low



2. Pump on?

Water Flow?

1. Pump on?

2. Strainer choked?

3. Valves open?

No

Yes

Yes


Ec Suction Temperature too low

Tsuc < -6°CTsuc < -6°C?

Normal Operation

No

Compressor tripped

and auto-reset

Yes


Model: WH25/30/40/50/60/70B/BR


Fix or Change it

E0

E1

Indoor Coil 1 Sensor Missing or Damaged

Indoor Coil 2 Sensor Missing or Damaged

E2 Return Air Sensor Missing or Damaged


E3

E4

Water Outlet 1 Sensor Missing or Damaged


Water Outlet 2 Sensor Missing or Damaged

E6 Suction 1 Sensor Missing or Damaged

E7 Suction 2 Sensor Missing or Damaged

Fix or Change it


Eb Compressor 1 Gas Leaking

Ec Compressor 2 Gas Leaking

Comp run 5 mins

Tin coil Tr – 3°C (Cooling)Tin coil Tr + 3°C (Heating)

No

Yes 1. Check for leakage



Normal

Operation


Ed Compressor 1 Indoor Coil Frosting

Ef Compressor 2 Indoor Coil Frosting

Available in COOL and DRY mode

1. Check whether fan spoil

2. Over-charged


Check whether wrong terminal connection?

EE Network Communication Port Error

Change it

Yes


F9 Compressor 1 Low Pressure Failure Input Contact

F1 Compressor 2 Low Pressure Failure Input Contact

1. Gas Leak


3. Cap. tube choked

Low (7 psig)

LP tripped


F8 Compressor 1 High Pressure Failure Input Contact

HP tripped

1. Water Flow

2. Water Temp

High (470 psig)

F2 Compressor 2 High Pressure Failure Input Contact


F0 Water Flow Failure Input Contact

1. No Water Flow

2. Insufficient Water Flow

F3 Water Level Failure Input Contact

1. WP connection loose

2. Pump suction port choked

3. Water Level Switch spoiled

Optional Items


Fd Entering Water Temperature 2 Failure



2. Pump on?

Water Flow?

1. Pump on?

2. Strainer choked?

3. Valves open?

No

Yes

Yes

Fb Entering Water Temperature 1 Failure


FE Suction Temperature too low

Tsuc < -6°CTsuc < -6°C?

Normal Operation

No

Compressor tripped

and auto-reset

Yes


Thank YouThank You

troubleshooting. 5wss troubleshooting error codefaulty indication e1room sensor contact loose...

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