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Troubleshooting
The table below give indication about self diagnostic routine . Some of error code requires activities exclusively for Authorized
Service Center .
Outdoor unit
If an error occurs during the operation, it is displayed on the outdoor unit PCB LED, both MAIN PCB and INVERTER PCB.
No.
Meaning
Remarks
Error Code
-
Normal operation
(MAIN : Indoor
Outdoor : 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
temperature is over 86 °F .
Heating
E440
Cooling operation is not available since the outdoor air
temperature is lower than 5 °F .
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
4way Outdoor_북미향_IM_EN_05138A-00.indd 30
2014-12-08 오후 3:12:48