Troubleshooting
The table below give indication about self diagnostic routine. Some of error code requires activities exclusively for Authorized
Service Center.
If an error occurs during the operation, it is displayed on the outdoor unit PCB LED, both MAIN PCB and INVERTER PCB.
Outdoor unit
No. Meaning Remarks Error Code
-
Normal operation
(MAIN : IndoorOutdoor : Green ON)
(INVERTER : MAIN PCB INVERTER PCB : Green ON)
-
1 Unit quantity miss matching between indoor and outdoor.
Check indoor quantity setting in outdoor
E201
2
Abnormal state, no communication between Indoor and Outdoor
Main PCB
Check electrical connection and setting
E202
3
1min. Time out of communcation error(Main
Inverter)
Check electrical connection and setting
E203
4 Outdoor temp sensor error
Check Outdoor sensor Open/Short
E221
5 Cond. temp sensor error Check Cond. sensor Open/Short E231
6 Discharge temp sensor error Check Discharge sensor Open/Short E251
7 OLP Sensor Error Check OLP sensor Open/Short E320
8 Detection of Outdoor Freezing when Comp. Stop Check Outdoor Cond. E403
9 Protection of Outdoor Overload when Comp. Stop Check Comp. when it start E404
10
Discharge temperature of a compressor in an
outdoor unit is overheated.
E416
11
Heating operation is not available since the outdoor air tem-
perature is over 30°C.
Heating E440
Cooling operation is not available since the outdoor air tem-
perature is lower than -15°C.
Cooling E441
12 Outdoor unit BLDC Fan 1 or Fan 2 error
FAN1 error E458
FAN2 error E475
13 Comp. Starting error E461
14 Primary Current Trip error E462
15 Over current trip / PFC over current error Check OLP sensor E463
16 IPM(IGBT Module) Over Current(O.C) E464
17 Comp. Over load error E465
18 DC-Link voltage under/over error
Check AC Power or DC_Link voltage
E466
19 Comp. wire missing error Check Comp. wire E467
20 Current sensor error Check Outdoor Inverter PBA E468
21 Outdoor EEPROM error Check Outdoor EEPROM data E471
22
IPM(IGBT Module) or PFCM Temperature sensor Error
Check Outdoor Inverter PBA E474
23 PFC Overload Error
Check Outdoor Inverter PBA
E484
24 IPM is over heated. Check Outdoor Inverter PBA E500
25 GAS Leak error
Check indoor and outdoor unit model
E554
26 Capacity miss match between indoor and outdoor
Check indoor and outdoor unit model
E556
27 Option code miss matching among the indoors (only for DPM) Check indoor option code E557
28 Outdoor EEPROM error (checksum) Check Outdoor EEPROM data E470
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