Model reference
LG ABNH186HLAC
Air Conditioner
2 documents39 error codes8 service modes
Available documentation
Service Manual
- LG Universal System Air Conditioner SERVICE MANUAL159 pg
- Air Conditioner Service Manual - Single "A"-Inverter Type113 pg
MyPros+ Max
Diagnose your LG ABNH186HLAC.
- Step-by-step diagnostics from the service manual
- Test values, resistance specs, and wiring references
- Verified part numbers when replacement is needed
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Error codes (39)
CodeMeaning
01Indoor room thermistor error (open/short or faulty sensor).02Indoor inlet pipe sensor error (open/short or faulty sensor).03Remote controller communication error (wired remote controller).04Drain pump / float switch error.05Communication error between indoor and outdoor units.06Indoor outlet pipe sensor error (open/short or faulty sensor).07Different mode operation error.09EEPROM checksum error (indoor).10BLDC motor fan lock (indoor).21DC Peak / IPM Fault22CT2 Max current23DC Link low voltage (1ph24Low pressure / high pressure switch open.25Low voltage / over voltage.26DC compressor position detect error.27PFC/PSC fault error28DC Link high voltage (1ph29Inverter compressor over current32Discharge pipe temperature high for inverter compressor (≥105°C).33Discharge pipe temperature high for constant compressor (≥105°C).39Communication error between PFC Micom and INV Micom.40CT sensor error (open/short)41Inverter discharge pipe thermistor error (open/short).44Outdoor air thermistor error (open/short).45Condenser pipe thermistor error (open/short).46Suction pipe thermistor error (open/short).47Constant compressor discharge pipe thermistor error (open/short).48Outdoor unit suction temperature thermistor open/short.51Over capacity52Transmission error between inverter PCB and main PCBView all 39 error codes
53Communication signal error between indoor and outdoor units (displayed at…60EEPROM checksum error (outdoor).61Condenser pipe sensor temperature high (≥65°C).62Heat sink sensor temperature high (≥85°C).63Condenser pipe temperature low.65Heat sink thermistor error (open/short)67BLDC motor fan lock (outdoor).73PFC fault error (S/W)CLChild lock is active; all keys on wired remote are locked.
Service modes (8)
- Auto Addressing (Synchro Operation)1
- Child LockPress the preset and minute setup button simultaneously for 3 seconds
- E.S.P. (External Static Pressure) Setting Mode1
- E.S.P. Setting Mode (Duct Type)["1
- Forced OperationPress the ON/OFF button on the main unit display panel (for use when remote control is lost).
- Installer Setting ModePress the designated button for 4 seconds until function code is displayed on the bottom of the LCD…
- Self-diagnosis / Error Display["1. Error codes are automatically displayed via the operating LED on the indoor unit.","2. The LED…
- Test Run ModeFor ceiling cassette type
Full entry steps, exit procedures, and test sequences are available in Max.
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