Trouble Shooting - Samsung RC***MHXGA Installation Manual

Trouble shooting

Trouble shooting
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.
LED Display
Displayed
No.
PCB Assy
Red Green Yellow
-  MAIN/INVERTER
 
1 MAIN
  
  
2 MAIN/INVERTER
  
3    MAIN/INVERTER 1min. Time out of communcation error(MainInverter) Check electrical connection and setting
4 MAIN
  
5 MAIN
  
6 MAIN
  
7    MAIN
8 MAIN
  
9    MAIN
10 MAIN
  
11    MAIN
12  MAIN/INVERTER Outdoor unit BLDC Fan 1 or Fan 2 error
 
13    MAIN/INVERTER Comp. Starting error
14 MAIN
  
15    MAIN
16  MAIN/INVERTER IPM(IGBT Module) Over Current(O.C)
 
17  MAIN/INVERTER Comp. Over load error
 
18    MAIN/INVERTER DC-Link voltage under/over error
19  MAIN/INVERTER Comp. wire missing error
 
20    MAIN/INVERTER Current sensor error
21 MAIN
  
22  MAIN/INVERTER IPM(IGBT Module) or PFCM Temperature sensor Error Check Outdoor Inverter PBA
 
23    MAIN/INVERTER PFC Overload Error
24  MAIN/INVERTER IPM is over heated.
 
25    MAIN
26 MAIN
  
 Off  Blink  On
Meaning
Normal operation
(MAIN : IndoorOutdoor : Green ON)
(INVERTER : MAIN PCBINVERTER PCB : Green ON)
Unit quantity miss matching between indoor and
outdoor.
Abnormal state, no communication between Indoor
and Outdoor Main PCB
Outdoor temp sensor error
Cond. temp sensor error
Discharge temp sensor error
OLP Sensor Error
Detection of Outdoor Freezing when Comp. Stop
Protection of Outdoor Overload when Comp. Stop Check Comp. when it start
Discharge temperature of a compressor in an
outdoor unit is overheated.
Heating operation is not available since the outdoor
air temperature is over 35°C.
Cooling operation is not available since the outdoor
air temperature is lower than -5°C.
Primary Current Trip error
Over current trip / PFC over current error
Outdoor EEPROM error
GAS Leak error
Capacity miss match between indoor and outdoor Check indoor and outdoor unit model
Remarks
Check indoor quantity setting in
outdoor.
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.
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 date
Check Outdoor Inverter PBA
Check Outdoor Inverter PBA
Check indoor and outdoor unit model
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
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