Model reference
LG ARUBSERIES
Air Conditioner
2 documents152 error codes14 service modes
Available documentation
Service Manual
- Air Conditioner Service Manual R410A (Exploded View)355 pg
- Air Conditioner Service Manual374 pg
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Error codes (152)
CodeMeaning
01Indoor unit air temperature sensor is open or short circuit.02Indoor unit inlet pipe temperature sensor is open or short circuit.03Transmission error between wired remote controller and indoor unit04Drain pump malfunction05Transmission error between indoor and outdoor units06Indoor unit outlet pipe temperature sensor is open or short circuit.07Operation mode between indoor unit and outdoor unit is different.09Indoor unit EEPROM error10Indoor unit BLDC fan motor failure100Over-increase of discharge temperature of constant speed compressor 1 of sub1…101Over-increase of discharge temperature of constant speed compressor 2 of sub1…102Over-increase of discharge temperature of constant speed compressor 1 of sub2…103Over-increase of discharge temperature of constant speed compressor 2 of sub2…104Transmission error between outdoor units105Transmission error between outdoor Main PCB and fan Main PCB (Fan to outdoor…106Over current of main outdoor fan motor (inverter fan IPM fault).107Low voltage of main outdoor fan motor108Transmission error between main PCB and the Fan PCB.109Excessive rise of high pressure in sub1 outdoor unit11Indoor unit transmission error110Wrong connection of 3 phase power cable of sub1 outdoor unit (reverse phase or…111Transmission error113Liquid pipe temperature sensor of main outdoor unit is open or short.114Subcooling inlet temperature sensor of main outdoor unit is open or short.115Subcooling outlet temperature sensor of main outdoor unit is open or short.116High pressure sensor of sub1 outdoor unit is open or short.117Low pressure sensor of sub1 outdoor unit is open or short.118Air temperature sensor of sub1 outdoor unit is open or short.120Suction temperature sensor of sub1 outdoor unit is open or short.121Discharge temperature sensor of constant speed compressor 1 of sub1 outdoor…View all 152 error codes
122Discharge temperature sensor of constant speed compressor 2 of sub1 outdoor…123Temperature sensor of front-side heat exchanger of sub1 unit is open or short.124Temperature sensor of rear-side heat exchanger of sub1 unit is open or short.125Liquid pipe temperature sensor of sub1 outdoor unit is open or short.126Subcooling inlet temperature sensor of sub1 outdoor unit is open or short.127Subcooling outlet temperature sensor of sub1 outdoor unit is open or short.128High pressure sensor of sub2 outdoor unit is open or short.129Low pressure sensor of sub2 outdoor unit is open or short.130Air temperature sensor of sub2 outdoor unit is open or short.132Suction temperature sensor of sub2 outdoor unit is open or short.133Discharge temperature sensor of constant speed compressor 1 of sub2 outdoor…134Discharge temperature sensor of constant speed compressor 2 of sub2 outdoor…135Temperature sensor of front-side heat exchanger of sub2 unit is open or short.136Temperature sensor of rear-side heat exchanger of sub2 unit is open or short.137Liquid pipe temperature sensor of sub2 outdoor unit is open or short.138Subcooling inlet temperature sensor of sub2 outdoor unit is open or short.139Subcooling outlet temperature sensor of sub2 outdoor unit is open or short.140Excessive rise of high pressure in sub2 outdoor unit141Wrong connection of 3 phase power cable of sub2 outdoor unit (reverse phase or…142Transmission error between outdoor units143Excessive rise in high pressure of sub1 outdoor unit144Excessive drop in low pressure of sub1 outdoor unit145Excessive rise in high pressure of sub2 outdoor unit146Excessive drop in low pressure of sub2 outdoor unit147Low/high voltage of sub1 outdoor unit148Voltage detection circuit of sub1 outdoor unit is out of order.149Low/high voltage of sub2 outdoor unit150Voltage detection circuit of sub2 outdoor unit is out of order.151Function error of 4-way (reversing) valve in main or sub outdoor units152Over-increase of discharge temperature of constant speed compressor 1 of sub3…153Over-increase of discharge temperature of constant speed compressor 2 of sub3…154Excessive rise of high pressure in sub3 outdoor unit155Wrong connection of 3 phase power cable of sub3 outdoor unit (reverse phase or…156Transmission error between outdoor units157High pressure sensor of sub3 outdoor unit is open or short.158Low pressure sensor of sub3 outdoor unit is open or short.159Air temperature sensor of sub3 outdoor unit is open or short.161Compressor suction temperature sensor of sub3 outdoor unit is open or short.162Discharge temperature sensor of constant speed compressor 1 of sub3 outdoor…163Discharge temperature sensor of constant speed compressor 2 of sub3 outdoor…164Temperature sensor of front-side heat exchanger of sub3 unit is open or short.165Temperature sensor of rear-side heat exchanger of sub3 unit is open or short.166Liquid pipe temperature sensor of sub3 outdoor unit is open or short.167Subcooling inlet temperature sensor of sub3 outdoor unit is open or short.168Subcooling outlet temperature sensor of sub3 outdoor unit is open or short.169Excessive rise in high pressure of sub3 outdoor unit170Excessive drop in low pressure of sub3 outdoor unit171Low/high voltage of sub3 outdoor unit.172Voltage detection circuit of sub3 outdoor unit is out of order.173Abnormal starting of main constant speed compressor174Abnormal starting of sub1 constant speed compressor 1175Abnormal starting of sub1 constant speed compressor 2176Abnormal starting of sub2 constant speed compressor 1177Abnormal starting of sub2 constant speed compressor 2200Pipe detection error201HR unit 1 liquid pipe temperature sensor error (open or short).202HR unit 1 sub-cooling inlet pipe temperature sensor error (open or short).203HR unit 1 sub-cooling discharge pipe temperature sensor error (open or short).204Transmission error between HR unit 1 and outdoor unit.205HR unit 2 liquid pipe temperature sensor error (open or short).206HR unit 2 sub-cooling inlet pipe temperature sensor error (open or short).207HR unit 2 sub-cooling discharge pipe temperature sensor error (open or short).208Transmission error between HR unit 2 and outdoor unit.209HR unit 3 liquid pipe temperature sensor error (open or short).21IPM fault of inverter compressor210HR unit 3 sub-cooling inlet pipe temperature sensor error (open or short).211HR unit 3 sub-cooling discharge pipe temperature sensor error (open or short).212Transmission error between HR unit 3 and outdoor unit.213HR unit 4 liquid pipe temperature sensor error (open or short).214HR unit 4 sub-cooling inlet pipe temperature sensor error (open or short).215HR unit 4 sub-cooling discharge pipe temperature sensor error (open or short).216Transmission error between HR unit 4 and outdoor unit.217HR unit 5 liquid pipe temperature sensor error (open or short).218HR unit 5 sub-cooling inlet pipe temperature sensor error (open or short).219HR unit 5 sub-cooling discharge pipe temperature sensor error (open or short).22Overcurrent of inverter compressor220Transmission error between HR unit 5 and outdoor unit.221HR unit 6 liquid pipe temperature sensor error (open or short).222HR unit 6 sub-cooling inlet pipe temperature sensor error (open or short).223HR unit 6 sub-cooling discharge pipe temperature sensor error (open or short).224Transmission error between HR unit 6 and outdoor unit.225HR unit 7 liquid pipe temperature sensor error (open or short).226HR unit 7 sub-cooling inlet pipe temperature sensor error (open or short).227HR unit 7 sub-cooling discharge pipe temperature sensor error (open or short).228Transmission error between HR unit 7 and outdoor unit.229HR unit 8 liquid pipe temperature sensor error (open or short).23DC voltage charging defect for inverter compressor driving230HR unit 8 sub-cooling inlet pipe temperature sensor error (open or short).231HR unit 8 sub-cooling discharge pipe temperature sensor error (open or short).232Transmission error between HR unit 8 and outdoor unit.24Excessive rise of discharge pressure in main outdoor compressor240Central controller CNU connection failure241Central controller data transmission error (sending error)242Central controller receive error243Central controller receive buffer overflow244Central controller to CNU data transmission failure245Central controller send timeout246Central controller receive timeout25Low or over voltage of main PCB input250Central controller checksum error251Central controller receive zero error252Central controller wrong address error32Over-increase of discharge temperature of inverter compressor at main outdoor…33Over-increase of discharge temperature of constant compressor at main outdoor…34Over-increase of high pressure of main outdoor unit35Excessive drop of low pressure of main outdoor unit40Low current at CT sensor41Discharge temperature sensor of inverter compressor is open or short.42Low pressure sensor of main outdoor unit is open or short.43High pressure sensor of main outdoor unit is open or short.44Air temperature sensor of main outdoor unit is open or short.45Temperature sensor of front-side heat exchanger is open or short.46Suction temperature sensor of main outdoor unit is open or short.47Discharge temperature sensor of the constant speed compressor of main outdoor…48Temperature sensor of rear-side heat exchanger is open or short.51Excessive capacity of indoor units52Transmission error from inverter PCB to main PCB53Transmission error from indoor unit to main PCB of outdoor unit.54Reverse connection or missing phase of R, S, T power supply of main outdoor…57Transmission error from main PCB to inverter PCB; failing to receive main PCB…62Overheat of inverter heatsink.65Heat sink temperature sensor of inverter control PCB is open or short.
Service modes (14)
- Auto Addressing (Indoor Units)1
- Auto addressing for indoor unit["Turn on outdoor unit, HR unit, and indoor unit power.","Wait 3 minutes.","Press SW02M on the…
- Auto pipe detection["Turn No.1 of SW02M on HR unit PCB off.","Confirm No.2 and 3 of SW02M corresponds with number of…
- Data display mode (Sub unit)["Set sub unit DIP switch LED8=1, LED7=1 for data display mode."]
- Forced oil collecting operation["Set outdoor main PCB DIP switch SW03M with switches 1, 2, and 4 ON.","Press data button for 5…
- Forced Operation (Cooling Model)Press the forced operation button on the main unit.
- Forced operation (Cooling only model)["Press the forced operation button on the main unit of the indoor appliance."]
- Forced operation (Heat pump model)["Press the forced operation button on the main unit of the indoor appliance.","Indoor fan operates…
- Instant indoor unit checking mode["Set outdoor main PCB DIP switch SW03M
- Instant Indoor Unit Checking Mode (Cooling)1. Set outdoor main PCB DIP switch SW03M
- Instant Indoor Unit Checking Mode (Heating)1. Set outdoor main PCB DIP switch SW03M
- Manual pipe detection["Enter central control address into each indoor unit using wired remote control.","Turn No.1 of…
- Test operation (Art Cool / Wall Mounted / Mirror indoor units)["After supplying power to the main body, press and hold the ON/OFF (forced operation) button for…
- Test Operation (Wall Mounted / Art Cool)Press and hold ON/OFF button for 3-5 seconds until the buzzer sounds 1 beep.
Full entry steps, exit procedures, and test sequences are available in Max.
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