Samsung Air Conditioner Fault Codes

Samsung air conditioners can malfunction from time to time as conditioners of other brands do. It’s a normal thing, because you deal with the technological stuff made by human. When facing the issue don’t panic and turn to the manual attached here. It’s going to become a great help for the productive repair without calling the service. It has already helped to a lot of customers.

Samsung SC09ZAB Air Conditioner Fault Codes

Error codesDescription
ChProhibit starting during operation of the Crack case heater
E108Error due to repeated communication address
E121Error on room temperature sensor of indoor unit (Short or Open)
E122Error on EVA IN sensor of indoor unit (Short or Open)
E123Error on EVA OUT sensor of indoor unit (Short or Open)
E124Communication error sends from indoor unit
E128Indoor unit EVA IN sensor breakaway
E129Indoor unit EVA OUT sensor breakaway
E131Indoor unit heater sensor error
E151Indoor unit EEV open failure(When 2* detection)
E152Indoor unit EEV close failure(When 2“ detection)
E153Indoor unit floating S/V error(When 2“ detection)
E154Indoor unit fan error
E162Outdoor unit EEPROM error
E198Error on thermal fuse of indoor unit (Open)
E201Communication error between indoor unit and outdoor unit (Pre tracking failure or when actual number of indoor units are different from the indoor unit quantity setting on the outdoor unit) Error due to communication tracking failure after initial power supply (The error occurs with the failure regardless of the number of devices)
E202Communication error between indoor and outdoor unit (When not received in every room after completing the tracking)
E203Communication error between outdoor unit inv - main micom (For PF #4~#6 controller, error will be determined from the time when compressor turns on)
E221Error on outdoor temperature sensor (Short or Open)
E231Error on outdoor COND OUT sensor (Short or Open)
E241COND OUT sensor breakaway
E251Digital comp.1 discharge temperature sensor(Short or Open)
E256Fixed comp.1 discharge temperature sensor(Short or Open)
E257Fixed comp.2 discharge temperature sensor(Short or Open)
E258Fixed comp.3 discharge temperature sensor(Short or Open)
E262Fixed compl Discharge temperature sensor breakaway
E263Fixed comp2 Discharge temperature sensor breakaway
E264Fixed comp3 Discharge temperature sensor breakaway
E265Digital compl Sump temperature sensor breakaway. Fixed compl Sump temperature sensor breakaway
E267Fixed comp2 Sump temperature sensor breakaway
E268Fixed comp3 Sump temperature sensor breakaway
E269Suction temperature sensor breakaway
E271Comp.1 Sump temperature sensor(Short or Open)
E291High pressure sensor(Short or Open)
E296Low pressure sensor(Short or Open)
E307Oil balance sensorl (Short or Open)
E308Suction sensor(Short or Open)
E311Double pipe sensor(Short or Open)
E320Error on OLP sensor (Short or Open)
E403Compressor down due to freeze protection control
E404System stop due to overload protection control
E407Comp, down by high pressure
E410Comp, down by low pressure
E413Comp, down by the sump protection control
E416Comp, down by the discharge temperature sensor
E422Blockage detected on high pressure pipe
E425Reverse phase or open phase
E428Comp down by compression ratio control
E431Equal oil valve 1 self diagnosis
E440Heating operation restricted at outdoor temperature over TheatJiigh value (default: 30 °C)
E441Cooling operation restricted at outdoor temperature below Tcooljow value (default 0°Q
E442Forbid an operation during heat mode with refrigerant charging operation when outdoor temperature is over 15°C
E443Start prohibition by refrigerant pressure error
E452Instant power off error
E453Fan motor hicfi temperature error
E454Fan motor RPM error
E455Fan motor IPM high temperature error
E456Fan motor over current error
E457Fan motor reverse rotation error
E458Fan speed error
E461Error due to operation failure of inverter compressor
E461CTJow current
E462System stop due to full current control
E463System stop due to OLP temperature control
E464System stop due to DC Peak
E465Compressor overload prevention
E466DC-Link voltage under/over error
E467Error due to abnormal rotation of the compressor or unconnected wire of compressor
E468Error on current sensor (Short or Open)
E469Error on DC-Link voltage sensor (Short or Open)
E470Outdoor unit EEPROM Read/Write error (Option)
E471Outdoor unit EEPROM Read/Write error (H/W)
E472AC Line Zero Cross Signal out
E473Comp Lock error
E474Error on IPM Heat Sink sensor of inverter 1 (Short or Open)
E475Error of inverter fan 2
E484PFC Overload (Over current) Error
E485Error on input current sensor of inverter 1 (Short or Open)
E500IPM over heat error on inverter 1
E508Smart install is not installed
E554Gas leak detected
E556Error due to mismatching capacity of indoor and outdoor unit
E557DPM remote controller option error
E560Switch option setting error(rvot applied)
E590Inverter EEPROM Checksum error
E660Error of inverter Boot Code
P701Indoor unit floating S/V error(When 1“ detection)
P702Indoor unit EEV close failure(When 1“ detection)
P703Indoor unit EEV open failure(When 1“ detection)

Samsung AQ09FCMID Air Conditioner Fault Codes

Error CodeMeaningChecking Area
E01Indoor unit room thermistor error• Indoor unit thermistor available or not and disconnected
• Indoor unit PCB
E05Indoor unit pipe thermistor error• Indoor unit pipe thermistor
• Indoor unit PCB
E06Outdoor unit thermistor error• Outdoor unit thermistor
• Outdoor unit PCB
E09Float switch open error• Drain pump, float switch
• Drain system
• Dip SW2 of indoor unit main PCB (If the drain pump is not installed, SW2 and SW4 shall be at the Off position.)
OAIndoor unit → outdoor unit communicating error• Indoor unit → outdoor unit communicating error
• Indoor unit → outdoor unit communicating cable
• Indoor unit PCB. Outdoor unit PCB
OCWired remote controller → indoor unit communication error• Wired remote controller → indoor unit communication cable
• Indoor unit main PCB
ODOutdoor unit pipe thermistor error• Outdoor unit pipe thermistor
• Outdoor unit PCB

Samsung AS12HM3 Air Conditioner Fault Codes

CheckpointTIMERSTDNATUREPOWERSAVINGSILENCE
Indoor unit room temperature sensor error (open or short)
Indoor unit heat exchanger temperature sensor error open or short)
Indoor fan mal function
EEPROM error
Option error(option wasn't set up or option data error)

Samsung AW09P1B Air Conditioner Fault Codes

Error codeDescription
E-101Communication error r indoor unit. It displays when the indoor unit receives no data from ttie outdoor unit.
E-102Commutation error between indoor and outdoor unit It displays in indoor unit
E-121Room temperature sensor of indoor unit (Open or Short)
E-122Eva_in temperature sensor of indoor unit. (Open or Short)
E-123Eva_out temperature sensor of indoor unit (Open or Short)
E-124Commutation error between indoor and outdoor unit. It displays in outdoor unit.
E-125Mid 2 temperature sensor of indoor unit. (Open or Short)
E-128Eva_in temperature sensor Is detached from evajn pipe of Indoor unit.
E-129Eva_out temperature sensor is detached from eva_out pipe of indoor unit.
E-130Eva_in and eva_out temperature sensors are detached from Eva_in and out pipes of indoor unit at the same time.
E-137VOC sensor of ERV product. (Open or Short)
E-138Gas sensor of ERV product (Open or Short)
E-139CQ> sensor of ERV product (Open or Short)
E-151EEV opening error of indoor unit (2'” detection)
E-152EEV closing error of indoor unit (2^ detection)
E-153Floating switch error of indoor unit (2™ detection)
E-154RPM feed back error of indoor unit.
E-155RPM feed back error of indoor unit (The second motor of indoor unit)
E-161Mixed operation mode of indoor units. It occurs when outdoor unit is operating or going to operate in cooling mode (or heating mode) and then other indoor unit is going to operate in heating mode (or cooing mode).
E-162EEPROM error of MICOM. (Physical damage)
E-163Option code error of indoor unit's EEPROM.
E-167Option setting error of indoor unit’s dip switch.
E-170Temperature setting error for USA market product. (Mixed setting -with Celsius and Fahrenheit temperature)
E-180Opening error of cooling aid heating solenoid valve simultaneously in MCU (1 3 detection)
E-181Opening error of cooling and heating solenoid valve simultaneously in MCU (2* detection)
E-185Cross wiring error between communication and power of indoor unit
E-190No matching between indoor unit's address and Eva_in sensor checking operation.
E-191No matching between indoor unit's address and eva_out sensor r pipe checking operation.
E-199It displays when pipe checking operation is not operated.

Samsung CH052EZMC Air Conditioner Fault Codes

Yellow LEDGreen LEDRed LEDExplanation
Power off/VDD NG
IPM Over Current
Abnormal Serial communication
Compressor Starting error
Normal Operation
Compressor Lock error
DC-Unk voltage under/over error
Outdoor temperature sensor error
Discharge over temperature
Discharge temperature sensor error
Current sensor error
Compressor limit error
Coil temperature sensor error
1 min. Time out Communication
Fan error
OTP error
Compressor rotation error
Operation condition secession(Dual only)
DC-Unk voltage sensor error
l_Trip error / PFC Over current
GAS Leak error
AC Line Zero Cross Signal out
Power ON reset(1 sec)
Capacity miss match

Samsung DH070EZM Air Conditioner Fault Codes

Error CodeMeaningChecking area
*1Indoor unit thermistor sensor error♦ Indoor unit thermistor sensor
♦ PCB of the indoor unit
*5Indoor unit pipe sensor error♦ Indoor unit pipe sensor
♦ PCB of the indoor unit
*6Outdoor unit thermistor sensor error♦ Outdoor unit thermistor sensor
♦ PCB of the outdoor unit
*9Float switch error♦ Drain pump, Float switch
♦ Drain system
♦ DIP switch(SW2) of the indoor unit
*AA Indoor and Outdoor communication error♦ Communication cables of indoor and outdoor units
♦ PCB of indoor and outdoor units
*CWired remote controller communication error♦ Wired remote controller cables. Wired remote controller
♦ Main/Sub PCB of the indoor unit
*DOutdoor pipe sensor error♦ Outdoor pipe sensor
♦ PCB of the outdoor unit
*LThree phase power incorrect connecting error(ln case of three phase power models)♦ Three phase power connecting
♦ PCB of the outdoor unit

Samsung HH140EZM Air Conditioner Fault Codes

ErrorCause
E464- current module overload
E461- compressor does not start
E473- compressor blocking
E466- DC card module voltage error occurred
E221- an error occurred with the outdoor temperature sensor
E416- Overheating occurred
E251- an error occurred with the temperature sensor
E468- Error of the electric current sensor
E465- compressor error
E237- winding error of the temperature sensor
E202- connection time (1 minute) expired
E458- Fan error occurred
E471- OTP error occurred
E467- Compressor rotation error
E440- operation condition secession Low
E441- operation condition secession High
E469- DC-Link error of the voltage sensor has occurred
E462- I_Trip error / PFC Over current
E554- there was a leak of refrigerant
E472- an error occurred in the zero crossing of the AC voltage
E556- Capacity Miss-match
E121- the internal air temperature sensor is closed / cut off
E122- the evaporator temperature sensor is closed / cut off
E154- Indoor unit fan error has occurred
E101- connection time (1 minute) exceeded
E186- MPI error

Samsung SH07APG Air Conditioner Fault Codes

Error ModeOPERATIONTIMERTURBODisplay
Indoor unit room temperature sensor error (open or short)E 1
Indoor unit heat exchanger temperature sensor error (open or short)F 2
Indoor fan motor malfunctionE 3
EEPROM errorE 6
Option errorDisplay Flickering
(option wasn't set up or option data error)

Samsung SH18ZKO Air Conditioner Fault Codes

Operation LED lamp displayDefrost LED lamp displayTimer LED lamp displayFilter LED lamp displayAbnormal conditions
XXXPower reset
XXXError of temperature sensor in the indoor unit (Open/Short)
XXError of heat exchanger sensor in the indoor unit (Open/Short)
XXXError of fan motor in the indoor unit
XXError of the outdoor temperature sensor Error of the condensor temperature sensor Error of the discharge temperature sensor
XXNo communication for 2 minutes between indoor and outdoor unit (communication error for more than 2minutes)
XError of outdoor unit
XXDetection of the float switch
XEEPROM error
EEPROM option error
XXMotion detect sensor error
XXXMixed operation error