Model reference
LG AM160FXMDGH666
Air Conditioner
1 document142 error codes18 service modes
Available documentation
Service Manual
- System Air Conditioner Outdoor Unit247 pg
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Error codes (142)
CodeMeaning
E101Indoor unit communication errorE102Communication error between indoor unit and outdoor unit, displayed in indoor…E108Address redundant error between indoor units or MCU.E121Error on indoor 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).E128EVA IN temperature sensor of indoor unit is detached from EVA IN pipe.E129EVA OUT temperature sensor of indoor unit is detached from EVA OUT pipe.E130Heat exchanger in/out sensors of indoor unit are detached.E135RPM feedback error of indoor unit's cleaning fan.E149Error due to AHU master indoor unit sensor setting.E151Error due to opened EEV of indoor unit (2nd detection).E152Error due to closed EEV of indoor unit (2nd detection).E153Error on floating switch of indoor unit (2nd detection).E154RPM feedback error of indoor unit.E161Mixed operation mode errorE162EEPROM error of MICOM (physical problem of parts/circuit).E163Indoor unit remote controller option input is incorrect or missing; outdoor…E180Simultaneous opening of cooling/heating MCU SOL V/V (1st detection).E181Simultaneous opening of cooling/heating MCU SOL V/V (2nd detection).E185Cross wiring error between communication and power cable of indoor unit.E186Connection error or problem on SPi.E190No temperature changes in EVA IN during pipe inspection or changes in…E191No temperature changes in EVA OUT during pipe inspection or changes in…E198Error due to disconnected thermal fuse of indoor unit.E201Communication error between indoor and outdoor units (installation number…E202Communication error between indoor and outdoor units (communication error on…E203Communication error between main and sub outdoor units.E205Communication error on all PBA within the outdoor unit C-Box, communication…E206Internal PCB communication error within outdoor unit C-Box (C001=HUB, C002=FAN…View all 142 error codes
E211MCU branch part setup errorE212MCU rotary switch for address setting has 3 or more of the same address.E213Indoor unit assigned on MCU is not actually installed even though total count…E214MCU quantity not set correctly on outdoor unit or duplicate MCU addresses exist.E215Two different MCUs have same address value on rotary switch.E216Indoor unit not installed to MCU port but port switch is set to On.E217Indoor unit connected to MCU port but port switch is set to Off.E218More indoor units actually connected than assigned to MCU.E219Error on temperature sensor located on MCU intercooler inlet (Short or Open).E220Error on temperature sensor located on MCU intercooler outlet (Short or Open).E221Error on outdoor temperature sensor of outdoor unit (Short or Open).E224Error on water temperature sensor of main outdoor unit (Short or Open).E225Error on control box temperature sensor of main outdoor unit (Short or Open).E231Error on COND OUT temperature sensor of main outdoor unit (Short or Open).E241COND OUT sensor is detached from pipe.E251Error on discharge temperature sensor of compressor 1 (Short or Open).E257Error on discharge temperature sensor of compressor 2 (Short or Open).E262Discharge temperature sensor of compressor 1 is detached from sensor holder on…E263Discharge temperature sensor of compressor 2 is detached from sensor holder on…E266Top sensor of compressor 1 is detached.E267Top sensor of compressor 2 is detached.E269Suction temperature sensor is detached from sensor holder on the pipe.E276Error on top sensor of compressor 1 (Short or Open).E277Error on top sensor of compressor 2 (Short or Open).E291Refrigerant leakage or error on high pressure sensor (Short or Open).E296Refrigerant leakage or error on low pressure sensor (Short or Open).E308Error on suction temperature sensor (Short or Open).E311Error on temperature sensor of double layer pipe/liquid pipe (Short or Open).E321Error on EVI (ESC) IN temperature sensor (Short or Open).E322Error on EVI (ESC) OUT temperature sensor (Short or Open).E323Error on suction sensor 2 (Short or Open).E346Error due to operation failure of Fan2.E347Motor wire of Fan2 is not connected.E348Lock error on Fan2 of outdoor unit.E353Error due to overheated motor of outdoor unit's Fan2.E355Error due to overheated IPM of Fan2.E361Error due to operation failure of inverter compressor 2.E364Error due to over-current of inverter compressor 2.E365V-limit error of inverter compressor 2.E366Error due to over voltage/low voltage of inverter PBA2.E367Error due to unconnected wire of compressor 2.E368Output current sensor error of inverter PBA2.E369DC voltage sensor error of inverter PBA2.E371Error due to INV2 Data Flash.E374Heat sink temperature sensor error of inverter PBA2.E378Error due to overcurrent of Fan2.E383Error due to over current of Fan2.E385Error due to input current of inverter 2.E386Over-voltage/low-voltage error of Fan2.E387Hall IC connection error of Fan2.E389V-limit error on Fan2 of compressor.E391Error due to Fan2 DataFlash.E393Output current sensor error of Fan2.E396DC voltage sensor error of Fan2.E399Heat sink temperature sensor error of Fan2 PBA IPM.E400Error due to overheat caused by contact failure on IPM of Inverter PBA2.E407Compressor operation stop due to high pressure protection control.E410Compressor operation stop due to low pressure protection control or refrigerant…E416Compressor operation stop due to discharge temperature protection control…E425Phase reversal or phase failure on 3-phase outdoor unit wiring (R-S-T-N)…E428Compressor operation stop due to abnormal compression ratio.E435Flow Switch Error.E436Error on the heat exchanger frost protection.E438EVI EEV leakage or internal leakage of intercooler or incorrect connector…E439Error due to refrigerant leakage.E440Heating mode restriction due to high air temperature.E441DVM Water heating mode restriction due to high water temperature.E442Cooling mode restriction due to low air temperature.E443DVM Water heating mode restriction due to low water temperature.E445Refrigerant charging restriction in heating mode when air temperature is over…E446Error due to operation failure of Fan1.E447Motor wire of Fan1 is not connected.E448Lock error on Fan1.E452Error due to ZPC detection circuit problem or power failure.E453Error due to overheated motor of outdoor unit's Fan1.E454Error due to outdoor unit fan RPM.E455Error due to overheat of Fan1 IPM.E457Outdoor unit reversed direction of the wind error.E461Error due to operation failure of inverter compressor 1.E462Compressor stop due to full current control or error due to low current on CT2.E464Error due to over-current of inverter compressor 1.E465V-limit error of inverter compressor 1.E466Error due to over voltage/low voltage of inverter PBA1.E467Error due to unconnected wire of compressor 1.E468Output current sensor error of inverter PBA1.E469DC voltage sensor error of inverter PBA1.E471Error due to INV1 Data Flash.E474Heat sink temperature sensor error of inverter PBA1.E478Error due to overcurrent of Fan1.E483Error due to over current of Fan1.E485Error due to input current of inverter 1.E486Error due to over voltage/low voltage of Fan PBA.E487Hall IC error of Fan1.E489V-limit error on Fan1 of compressor.E491Error due to Fan1 DataFlash.E493Output current sensor error of Fan1.E496DC voltage sensor error of Fan1.E499Heat sink temperature sensor error of Fan1 PBA IPM.E500Error due to overheat caused by contact failure on IPM of Inverter PBA1.E503Error due to alert user to check if service valve is closed.E504Error due to self diagnosis of compressor operation.E505Error due to self diagnosis of high pressure sensor.E506Error due to self diagnosis of low pressure sensor.E515Error due to overheat of control box.E516Error due to no feedback from the fan of the control box.E552Compressor down due to low discharge pressure.E560Outdoor unit option switch setting error (inappropriate option switch is on).E563Error due to module installation of indoor unit with old version (Micom version…E573Error due to using single type outdoor unit in a module installation.E702Error due to closed EEV of indoor unit (1st detection).E703Error due to opened EEV of indoor unit (1st detection).UPAuto Trial Operation incomplete (UnPrepared)
Service modes (18)
- Auto Trial OperationPress and hold K1 Tact Switch (for AM080/100/120/140/160/180/200/220FXV666) or press and hold K1…
- Checking Amount of RefrigerantPress K2 Tact Switch 5 times.
- Cooling Pump DownPress K2 Tact Switch 3 times.
- Discharge Mode (DC Link Voltage)Press K2 Tact Switch 6 times
- Fan 1 CheckPress K2 Tact Switch 11 times.
- Fan 2 CheckPress K2 Tact Switch 12 times.
- Forced Defrost OperationPress K2 Tact Switch 7 times.
- Forced Oil Recovery OperationPress K2 Tact Switch 8 times.
- Heating Pump OutPress K1 Tact Switch 3 to 6 times (selects outdoor unit address 1-4).
- Inverter Compressor 1 CheckPress K2 Tact Switch 9 times.
- Inverter Compressor 2 CheckPress K2 Tact Switch 10 times.
- Option Setting ModePress and hold K2 for a long time (only possible during stop)
- Piping Inspection OperationPress K2 Tact Switch 4 times (for HR models) or press K2 4 times for H/P models.
- Refrigerant Charging Operation (Cooling)Press K2 Tact Switch one time.
- Refrigerant Charging Operation (Heating)Press K1 Tact Switch one time.
- ResetPress K3 one time.
- Vacuum OperationPress K1 Tact Switch 7 to 11 times (selects outdoor unit address 1-4 or All).
- View Mode (Sensor Data Display)Press K4 briefly multiple times to cycle through displayed parameters (outdoor unit model, target…
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