Model reference
Samsung AVMCH072CA0
Air Conditioner
3 documents167 error codes3 service modes
Available documentation
Service Manual
- LG Samsung AVMCH072CA0 Service manual Disassembly _ Reassembly78 pg
Wiring Diagram
- LG Samsung AVMCH072CA0 Service Manual Wiring Diagram20 pg
- LG Samsung AVMCH072CA0 Service Manual Schematic Diagram14 pg
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Error codes (167)
CodeMeaning
AxBreakaway of indoor unit EVAP IN sensor (x = indoor unit address).BxOPEN/SHORT error of EVAP OUT sensor in indoor unit (x = indoor unit address).ChCompressor preheating in progress via crank case heater (CCH)CxOPEN/SHORT error of room sensor in indoor unit (x = indoor unit address).DxOPEN/SHORT error of EVAP IN sensor in indoor unit (x = indoor unit address).E1System down due to communication error after completion of tracking (no…E101Communication error between the indoor unit and the panel (PAC).E102Indoor unit room temperature sensor open/short error.E103Indoor unit EVAP IN sensor open/short error.E104Indoor unit EVAP OUT sensor open/short error.E105Indoor unit EVAP IN sensor breakaway.E106Indoor unit EVAP OUT sensor breakaway.E107Simultaneous breakaway of indoor unit EVAP IN/OUT sensor.E108Auxiliary (electric) heater sensor 1 error.E109Auxiliary (electric) heater sensor 2 error.E110Auxiliary (electric) heater sensor 3 error.E121Shutter sensor error.E122Perfect fan sensor error.E123MCU temperature sensor open/short error.E151Indoor unit EEV open failure.E152Indoor unit EEV close failure.E153Indoor unit float switch detection.E154Indoor fan error.E155Mixed operation errorE156EEPROM error.E157Option setting error.E158Electric heater discharge temperature protect error.E159No fan error related to the electric heater.E160S/W setup error in peripheral control device using option.E161The 1st MCU SOL V/V cooling/heating opening at the same time.View all 167 error codes
E162The 2nd MCU SOL V/V cooling/heating opening at the same time.E163The 2nd MCU SOL V/V error.E170There is no change of EVAP IN temperature during the piping check.E171There is no change of EVAP OUT temperature during the piping check.E172There is a change of EVAP IN temperature of other indoor unit during the piping…E173There is a change of EVAP OUT temperature of other indoor unit during the…E2Tracking errorE201Installed indoor unit number setting error on outdoor unit.E202Communication error between indoor and outdoor unit.E203Outdoor PCB MICOM communication error between main and sub.E204Communication error between the outdoor unit and MCU.E205Indoor unit connected with confluence kit without continuity.E206Indoor unit connected with confluence kit and setting address was overlapped…E207MCU address does not match with indoor unit address.E208Installed MCU quantity set-up error in the outdoor PCB.E209MCU address setting was overlapped.E210Rotary switch for indoor unit address in MCU was overlapped among MCUs.E211DIP switch for indoor unit setting was ON position even though indoor unit was…E212DIP switch for indoor unit setting was OFF position even though indoor unit was…E262Discharge sensor breakawayE263Discharge sensor breakawayE264Discharge sensor breakawayE3Indoor unit float switch errorE301Outdoor temperature sensor OPEN/SHORT error.E302Outdoor temperature sensor breakaway.E303COND-OUT MAIN temperature sensor error OPEN/SHORT.E304COND-OUT SUB 1 temperature sensor error OPEN/SHORT.E305COND-MID sensor breakaway of outdoor unit.E306COND-OUT 1 breakaway.E311PWM discharge temperature sensor error OPEN/SHORTE312Fixed capacity compressor 1 discharge sensor error OPEN/SHORTE313Fixed capacity compressor 2 discharge sensor error OPEN/SHORTE314Fixed capacity compressor 3 discharge sensor error OPEN/SHORTE321Digital discharge sensor breakaway.E322Fixed 1 discharge sensor breakaway.E323Fixed 2 discharge sensor breakaway.E324Fixed 3 discharge sensor breakaway.E331Sump-main breakaway error.E332Sump Sub 1 breakaway error.E333Sump Sub 2 breakaway error.E334Sump Sub 3 breakaway error.E335Suction breakaway error.E341SUMP TEMP DIGITAL sensor error OPEN/SHORTE342SUMP TEMP FIXED 1 sensor error OPEN/SHORTE343SUMP TEMP FIXED 2 sensor error OPEN/SHORTE344SUMP TEMP FIXED 3 sensor error OPEN/SHORTE351High pressure sensor error OPEN/SHORTE352Low pressure sensor error OPEN/SHORTE353High pressure sensor breakaway.E354Low pressure sensor breakaway.E355Suction temperature sensor ERROR (OPEN/SHORT).E4Setting error of option switch in indoor unitE401Main cooling solenoid valve open error.E4024-Way valve operation error.E425Outdoor unit reverse phase detection errorE5Indoor unit float switch error (Specification 1 reference).E501Defrosting operation.E502Low discharge pressureE503Equability (oil leveling) operationE504Loading failure of digital compressor.E505Full leakage of refrigerant of outdoor unit.E601Communication error between wired remote controller and indoor unit.E602Communication error between master wired remote controller and slave wired…E603Communication error between 7 day scheduler and wired remote controller.FxBreakaway of indoor unit EVAP OUT sensor (x = indoor unit address).G2Total leakage of refrigerant in outdoor unit or loading failure.G3Breakaway of COND MID sensor in outdoor unit.G4Breakaway of oil temperature sensor (detected once or more times).G5Breakaway of suction temperature sensor.G6Breakaway of fixed compressor discharge sensor (detected once or more times).G7Forbid cooling operation when outdoor temperature is below -5°C.G8Forbid heating operation when outdoor temperature is over 30°C; also charging…G9Self-diagnosis of condensation sensor.P0System down due to high temperature of discharge sensor (exceeding 135°C).P1System down due to high temperature of condenser sensor (condensate temperature…P2SUMP COMP DOWNP3System down due to low pressure switch detection (low pressure lower than 1.2…P4Reverse phase or open phase error on 3-phase power supply to compressor.P5System down due to frozen indoor heat exchanger (temperature kept at -4°C for…P6Error of momentary power failureP7Compressor down due to high pressure sensor protection control (over 28…P701Outdoor unit freezing detection 1.P702Outdoor unit freezing detection 2.P703Outdoor unit freezing detection 3P704Outdoor unit overload 1 protection control error.P705Outdoor unit overload 2 protection control error.P706Outdoor unit overload 3 protection control error.P711Compressor down by high pressure sensor protection control 1.P712Compressor down by high pressure sensor protection control 2.P713Compressor down by high pressure sensor protection control 3.P721Compressor down by low pressure sensor protection control 1.P722Compressor down by low pressure sensor protection control 2.P723Compressor down by low pressure sensor protection control 3.P731Outdoor unit SUMP DOWN 1 protection controlP732Outdoor unit SUMP DOWN 2 protection control.P733Outdoor unit SUMP DOWN 3 protection control.P741Outdoor unit discharge temperature 1 protection control.P742Outdoor unit discharge temperature 2 protection control.P743Outdoor unit discharge temperature 3 protection control.P751Outdoor unit EEV open 1 self diagnosis error.P752Outdoor unit EEV open 2 self diagnosis error.P753Outdoor unit EEV open 3 self diagnosis error.P754Outdoor unit EEV close 1 self diagnosis error.P755Outdoor unit EEV close 2 self diagnosis error.P756Outdoor unit EEV close 3 self diagnosis error.P761Outdoor unit reverse phase detection 1 error.P762Outdoor unit reverse phase detection 2 error.P763Outdoor unit reverse phase detection 3 error.P771Outdoor unit compression rate 1 errorP772Outdoor unit compression rate 2 error.P773Outdoor unit compression rate 3 error.P781Forbid heating mode operation when outdoor temperature over 30°C.P782Forbid cooling mode operation when outdoor temperature below -5°C.P783Refrigerant charging operation restriction at 15°C or over of outdoor…P784Instant power offP8Compressor down due to low pressure sensor protection control (less than 3…P801Float S/W detection error (low level riskP802Indoor unit EEV closing error (low level riskP803Indoor unit EEV opening error (low level riskP804MCU solenoid valve failure (low level riskP9In removing frostPACompressor down due to protection control of condensation ratio (compression…qxElectronic expansion valve open error (x = indoor unit address).rxElectronic expansion valve close error (x = indoor unit address).sxSimultaneous breakaway of indoor unit EVAP IN and EVAP OUT sensor (x = indoor…t1Error of outdoor temperature sensor (OPEN/SHORT)t2Error of condenser temperature sensor (OPEN/SHORT)t3Error of PWM discharge temperature sensor (OPEN/SHORT)t4Error of liquid refrigerant pipe (COND OUT) temperature sensor (OPEN/SHORT)t5Error of oil temperature sensor (OPEN/SHORT)t6Error of suction temperature sensor (OPEN/SHORT)t7Error of high pressure sensor (OPEN/SHORT)t8Error of low pressure sensor (OPEN/SHORT)t9Error of fixed compressor discharge sensor (OPEN/SHORT)toLow pressure sensor breakaway.tuHigh pressure sensor breakaway.vxError of indoor unit fan starting (x = indoor unit address).
Service modes (3)
- Error resetPress reset key KEY 3 (K3) on the outdoor unit PCB.
- Piping checkPress KEY 5 (K5) on outdoor unit PCB after pipe check to display error information.
- Test operationPress KEY 4 (K4) on the outdoor unit PCB to enter test operation mode
Full entry steps, exit procedures, and test sequences are available in Max.
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