Model reference

LG AM100HXVFID

Air Conditioner

1 document115 error codes19 service modes

Available documentation

Service Manual

System Air Conditioner Outdoor Unit143 pg
Covers this model

MyPros+ Max

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Error codes (115)

CodeMeaning

E101Indoor unit communication error E102Communication error between indoor unit and outdoor unit, displayed in indoor…E108Error due to repeated address setting when 2 or more devices have the same…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 error of indoor unit; outdoor unit preparing…E162EEPROM error of MICOM (physical problem of parts/circuit).E163Indoor unit's remote controller option input is incorrect or missing; outdoor…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 of the outdoor unit C-Box (C001 E221Error on outdoor temperature sensor of outdoor unit (Short or Open).E231Error on COND OUT temperature sensor of main outdoor unit (Short or Open).

View all 115 error codes

E241COND OUT sensor is detached.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 the sensor holder…E263Discharge temperature sensor of compressor 2 is detached from the sensor holder…E266Top sensor of compressor 1 is detached.E267Top sensor of compressor 2 is detached.E269Suction temperature sensor is detached from the 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 (sub heat…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 (IPM internal temperature more than 85°C).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.E374Heat sink temperature sensor error of inverter PBA2.E378Error due to overcurrent 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.E393Output current sensor error of Fan2.E396DC voltage sensor error of Fan2.E399Heat sink temperature sensor error of Fan2.E400Error due to overheat caused by contact failure on IPM of Inverter PBA2 (IGBT…E407Compressor operation stop due to high pressure protection control (high…E410Compressor operation stop due to low pressure protection control or refrigerant…E416Compressor operation stop due to discharge temperature/top temperature sensor…E425Phase reversal or phase failure (3-phase outdoor unit wiring R-S-T-N)…E428Compressor operation stop due to abnormal compression ratio.E438EVI (ESC) EEV leakage or internal leakage of intercooler or incorrect connector…E439Error due to refrigerant leakage.E440Heating mode restriction due to high air temperature.E441Cooling mode restriction due to low air temperature.E442Refrigerant charging restriction in heating mode when air temperature is over…E443Operation prohibited due to low pressure.E445CCH wire breaking error (crankcase heater detached).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 (momentary…E453Error due to overheated motor of outdoor unit's Fan1.E455Error due to overheated IPM of Fan1 (IPM internal temperature more than 85°C).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.E474Heat sink temperature sensor error of inverter PBA1.E478Error due to overcurrent of Fan1.E485Error due to input current of inverter 1.E486Error due to over voltage/low voltage of Fan.E487Hall IC error of Fan1.E489V-limit error on Fan1 of compressor.E493Output current sensor error of Fan1.E496DC voltage sensor error of Fan1.E499Heat sink temperature sensor error of Fan1.E500Error due to overheat caused by contact failure on IPM of Inverter PBA1 (IGBT…E503Error due to alert the user to check if the 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.E560Outdoor unit's option switch setting error (when inappropriate option switch is…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 not completed (UnPrepared)

Service modes (19)

Auto Trial OperationPress and hold K1 Tact Switch for a long time
Cooling Pump DownPress K2 Tact Switch 3 times
DC Link Voltage Discharge ModePress 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 3-6 times (3 times for address 1, 4 times for address 2, 5 times for address…
Inverter Compressor 1 CheckPress K2 Tact Switch 9 times
Inverter Compressor 2 CheckPress K2 Tact Switch 10 times
Option Setting ModePress K2 for a long time (only possible during operation stop)
Piping Inspection OperationPress K2 Tact Switch 4 times
Refrigerant Amount CheckPress K2 Tact Switch 5 times
Refrigerant Filling Operation - CoolingPress K2 Tact Switch one time
Refrigerant Filling Operation - HeatingPress K1 Tact Switch one time
Trial Operation - CoolingPress K2 Tact Switch 2 times
Trial Operation - HeatingPress K1 Tact Switch 2 times
Vacuum OperationPress K1 Tact Switch 7-11 times (7=address 1, 8=address 2, 9=address 3, 10=address 4, 11=all…
View ModePress K4 Tact Switch to check view mode.

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