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Samsung AC Error Codes and Troubleshooting


Samsung AC Error Codes and Troubleshooting

Error Code
Cause
E101
Communication Error (Indoor Outdoor)
E102
Communication Error (Indoor Outdoor)
E121
ROOM TH sensor error
E122
INDOOR MID, INDOOR IN PIPE-TH sensor error
E154
Fan Error (Indoor)
E162
EEPROM Error (Indoor)
E163
Option Error
E203
Time out Comm. (Inv Micom Main Micom)
E221
OUT-TH(Outdoor Temperature) Sensor Error
E231
CON-TH(Cond Temperature) Sensor Error
E251
DIS-TH(Discharge Temperature) Sensor Error
E416
DIS-TH(Discharge Temperature) Over Error
E422
EEV or Valve Close error-Self diagnosis
E440
Prohibit Operation Condition Error (Heating)
E441
Prohibit Operation Condition Error (Cooling)
E458
Fan Error(Outdoor)
E461
Comp Starting Error
E462
AC Input I_Limit Trip Error
E464
IPM Over Current(O.C) Error
System AC Error Codes
Indoor Unit Error mode and check method;
Display: E1 ↔ 01
Explanation: Communication error (unable to receive data)
Main checking Point/Remark: Communication cable connection
Display: E1 ↔ 02
Explanation: Communication error (outdoor cannot communicate)
Main checking Point/Remark: Another indoor unit or indoor PCB
Display: E1 ↔ 21
Explanation: Indoor unit room temperature sensor error (Open/Short)
Main checking Point/Remark: Room temperature sensor, indoor PCB
Display: E1 ↔ 22
Explanation: Indoor unit heat exchanger in temperature sensor error (Open/Short)
Main checking Point/Remark: Heat exchanger in sensor, indoor PCB
Display: E1 ↔ 23
Explanation: Indoor unit heat exchanger out temperature sensor error (Open/Short)
Main checking Point/Remark: Heat exchanger out sensor, indoor PCB
Display: E1 ↔ 28
Explanation: Indoor unit heat exchanger in temperature sensor detached
Main checking Point/Remark: Heat exchanger in sensor
Display: E1 ↔ 029
Explanation: Indoor unit heat exchanger out temperature sensor detached
Main checking Point/Remark: Heat exchanger out sensor
Display: E1 ↔ 30
Explanation: Indoor unit heat exchanger in & out temperature sensor detached
Main checking Point/Remark: Heat exchanger in & out sensor
Display: E1 ↔ 54
Explanation: Indoor unit fan motor malfunction
Main checking Point/Remark: Fan motor and cable
Display: E1 ↔ 61
Explanation: More than 2 indoor units cool and heat simultaneously
Main checking Point/Remark: Another indoor unit operation mode
Display: E1 ↔ 62
Explanation: EEPROM error
Main checking Point/Remark: Indoor PCB
Display: E1 ↔ 63
Explanation: Option code setting error
Main checking Point/Remark: Option code
Display: E1 ↔ 85
Explanation: Cable miss-wiring
Main checking Point/Remark: Cable connection (Indoor & Outdoor unit)
Display: E2 ↔ 01
Explanation: The number of indoor unit mismatched
Main checking Point/Remark: Cable connection (another indoor unit & outdoor unit), SW01(outdoor)
Display: E2 ↔ 51
Explanation: Compressor discharge sensor error(Short/Open)
Main checking Point/Remark:  Outdoor unit
Display: E5 ↔ 59
Explanation: Outdoor unit error
Main checking Point/Remark: Outdoor unit (Error code)
The error indicated on the LED display of Indoor unit;
Outdoor Unit Error mode and check method;
Display: E1 ↔ 01
Explanation: Communication error (indoor unable to receive data)
Main checking Point: Communication cable connection
Display: E1 ↔ 02
Explanation: Communication error (outdoor unable to communicate)
Main checking Point: Indoor unit
Display: E1 ↔ 21
Explanation: Indoor unit room temperature sensor error (Open/Short)
Main checking Point: Indoor unit
Display: E1 ↔ 22
Explanation: Indoor unit heat exchanger in temperature sensor error (Open/Short)
Main checking Point: Indoor unit
Display: E1 ↔ 23
Explanation: Indoor unit heat exchanger out temperature sensor error (Open/Short)
Main checking Point:  Indoor unit
Display: E1 ↔ 28
Explanation: Indoor unit sensor error – Evaporator pipe in sensor detached
Main checking Point: Indoor unit
Display: E1 ↔ 29
Explanation: Indoor unit sensor error – Evaporator pipe out sensor detached
Main checking Point: Indoor unit
Display: E1 ↔ 30
Explanation: Indoor unit heat exchanger in & out temperature sensor detached
Main checking Point: Indoor unit
Display: E1 ↔ 61
Explanation: More than 2 indoor units cool and heat simultaneously
Main checking Point: Indoor unit operation mode
Display: E2 ↔ 01
Explanation: The number of indoor unit mismatched
Main checking Point: Communication wiring
Display: E2 ↔ 02
Explanation: Communication error (outdoor unable to receive data)
Main checking Point: Communication wiring
Display: E2 ↔ 03
Explanation: Communication error between 2 microcontroller on the outdoor PCB
Main checking Point: Outdoor unit PCB
Display: E2 ↔ 37
Explanation: Condenser temperature sensor error (Short/Open)
Main checking Point: Temperature sensor
Display: E2 ↔  46
Explanation: Condenser temperature sensor detached
Main checking Point:  Temperature sensor
Display: E2 ↔  60
Explanation: Compressor discharge sensor error (Short/Open)
Main checking Point:  Temperature sensor
Display: E2 ↔  61
Explanation: Compressor discharge sensor detached
Main checking Point:  Temperature sensor
Display: E3 ↔  20
Explanation: Compressor OLP sensor error (Short/Open)
Main checking Point:  Temperature sensor
Display: E4 ↔  01
Explanation: Indoor unit heat exchanger freezing and compressor stop (cooling mode)
Main checking Point: Check pipe matching also (indoor-outdoor)
Display: E4 ↔ 03
Explanation: Outdoor unit overload and compressor stop (protection control in heating mode)
Main checking Point: Check pipe matching also (indoor-outdoor)
Display: E4 ↔ 16
Explanation: Outdoor unit high discharge temperature and compressor stop
Main checking Point: Check pipe matching (indoor-outdoor)
Display: E4 ↔ 19  
Explanation: Outdoor unit EEV open error (self diagnosis)
Main checking Point:  EEV
Display: E4 ↔  22
Explanation: Outdoor unit EEV close error (self diagnosis)
Main checking Point: EEV
Display: E4 ↔  40
Explanation: High temperature (over 30˚C) of outdoor as heating mode
Main checking Point: Operation mode
Display: E4 ↔  41
Explanation: Low temperature (under -5˚C) of indoor as cooling mode
Main checking Point: Operation mode
Display: E4 ↔  60
Explanation: Wrong connection between communication and power cable
Main checking Point: Wiring indoor and outdoor
Display: E4 ↔  61
Explanation: Inverter Compressor starting failure (5 times)
Main checking Point: Service valve, EEV, Compressor terminal, Compressor wire, Outdoor controller
Display: E4 ↔  62
Explanation: Compressor trip by input current limit control
Main checking Point: EEV, Gas over charge, Outdoor controller


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