Samsung Electronics 4-9
4-2-2 Troubleshooting for 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.
Error Code
Meaning Remarks
1 E201 Unit quantity miss matching between indoor and outdoor.
Check indoor quantity setting in outdoor
(Refer to page 17.)
2 E202
Abnormal state, no communication between Indoor and Outdoor
Main PCB
Check electrical connection and setting
3 E203
1min. Time out of communcation error(Main
Inverter)
Check electrical connection and setting
4 E221 Outdoor temp sensor error
Check Outdoor sensor Open/Short
5 E231 Cond. temp sensor error Check Cond. sensor Open/Short
6 E251 Discharge temp sensor error Check Discharge sensor Open/Short
7 E320 OLP Sensor Error Check OLP sensor Open/Short
8 E403 Detection of Outdoor Freezing when Comp. Stop Check Outdoor Cond.
9 E404 Protection of Outdoor Overload when Comp. Stop Check Comp. when it start
10 E416
Discharge temperature of a compressor in an
outdoor unit is overheated.
11
E440
Heating operation is not available since the outdoor air tempera-
ture is over 30°C.
Heating
E441
Cooling operation is not available since the outdoor air tempera-
ture is lower than -5°C.
Cooling
12
E458
Outdoor unit BLDC Fan 1 or Fan 2 error
FAN1 error
E475 FAN2 error
13 E461 Comp. Starting error
14 E462 Primary Current Trip error
15 E463 Over current trip / PFC over current error Check OLP sensor
16 E464 IPM(IGBT Module) Over Current(O.C)
17 E465 Comp. Over load error
18 E466 DC-Link voltage under/over error
Check AC Power or DC_Link voltage
19 E467 Comp. wire missing error Check Comp. wire
20 E468 Current sensor error Check Outdoor Inverter PBA
21 E471 Outdoor EEPROM error Check Outdoor EEPROM date
22 E474
IPM(IGBT Module) or PFCM Temperature sensor Error
Check Outdoor Inverter PBA
23 E484 PFC Overload Error
Check Outdoor Inverter PBA
24 E500 IPM is over heated. Check Outdoor Inverter PBA
25 E554 GAS Leak error
Check indoor and outdoor unit model
26 E556 Capacity miss match between indoor and outdoor
Check indoor and outdoor unit model
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