Outdoor Trouble Shooting - Samsung AC052HBLDKH Service Manual

4-2 Outdoor Trouble shooting

◆ If an error occurs during the operation, it is displayed on the outdoor unit PCB.
No.
1 Unit quantity miss matching between indoor and outdoor.
Abnormal state, no communication between Indoor and Outdoor
2
Main PCB
3 1min. Time out of communcation error(Main Inverter)
4 Outdoor temp sensor error
5 Cond. temp sensor error
6 Discharge temp sensor error
7 OLP Sensor Error
8 Detection of Outdoor Freezing when Comp. Stop
9 Protection of Outdoor Overload when Comp. Stop
Discharge temperature of a compressor in an
10
outdoor unit is overheated.
Heating operation is not available since the outdoor air tem-
perature is over 30°C.
11
Cooling operation is not available since the outdoor air tem-
perature is lower than -5°C.
Outdoor unit BLDC Fan 1 or Fan 2 error
12
13 Comp. Starting error
14 Primary Current Trip error
15 Over current trip / PFC over current error
16 IPM(IGBT Module) Over Current(O.C)
17 Comp. Over load error
18 DC-Link voltage under/over error
19 Comp. wire missing error
20 Current sensor error
21 Outdoor EEPROM error
22 IPM(IGBT Module) or PFCM Temperature sensor Error
23 PFC Overload Error
24 IPM is over heated.
25 GAS Leak error
26 Capacity miss match between indoor and outdoor
27 Option code miss matching among the indoors (only for DPM) Check indoor option code
28 Outdoor EEPROM error (checksum)
29 EEV or Valve Close error-Self diagnosis
30 Outdoor EEPROM checksum error between MAIN and INVERTER. Check Outdoor Inverter PBA
| Off € Blink z On
Samsung Electronics
Meaning Remarks
Check indoor quantity setting in outdoor
Check electrical connection and setting
Check electrical connection and setting
Check Outdoor sensor Open/Short
Check Cond. sensor Open/Short
Check Discharge sensor Open/Short
Check OLP sensor Open/Short
Check Outdoor Cond.
Check Comp. when it start
Heating
Cooling
FAN1 error
FAN2 error
Check OLP sensor
Check AC Power or DC_Link voltage
Check Comp. wire
Check Outdoor Inverter PBA
Check Outdoor EEPROM data
Check Outdoor Inverter PBA
Check Outdoor Inverter PBA
Check Outdoor Inverter PBA
Check indoor and outdoor unit model
Check indoor and outdoor unit model
Check Outdoor EEPROM data
1. Check if the service valve is open
2. Check for refrigerant leakage (pipe connections, heat
exchanger) and charge refrigerant if necessary
3. Check if there's any blockage on refrigerant cycle
(indoor unit/outdoor unit)
4. Check if additional refrigerant has been added after
pipe extension
Error Code
E201
E202
E203
E221
E231
E251
E320
E403
E404
E416
E440
E441
E458
E475
E461
E462
E463
E464
E465
E466
E467
E468
E471
E474
E484
E500
E554
E556
E557
E470
E422
E590
4-3