Model reference
LG AMNH12GDU0
Air Conditioner
1 document31 error codes8 service modes
Available documentation
Service Manual
- Multi Type Air Conditioner SVC MANUAL (Exploded View)261 pg
MyPros+ Max
Diagnose your LG AMNH12GDU0.
- 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 (31)
CodeMeaning
01Indoor room thermistor (air sensor) error02Indoor inlet pipe sensor error03Communication error between indoor unit and wired remote controller.04Drain pump / float switch error05Communication error between indoor and outdoor units.06Indoor outlet pipe sensor error07Different mode operation error21IPM Fault / DC Peak22CT 2 (Max CT)23DC Link Low Voltage24Low/High pressure switch open.25AC Low/High Voltage26DC Compressor Position detect error.27PSC Fault28DC Link High Voltage32Discharge pipe temperature high (Inverter compressor)33Discharge pipe temperature high (Constant compressor)40CT sensor circuit malfunction41Inverter discharge pipe thermistor error44Outdoor air thermistor error45Condenser pipe thermistor error46Suction pipe sensor error47Constant compressor discharge pipe thermistor error51Over capacity52Signal error between inverter board and main board (outdoor).53Communication error between indoor and outdoor units (displayed on outdoor…60EEPROM check sum error.61Condenser pipe sensor temperature high (above 65°C).62Heat sink sensor temperature high (above 85°C).63Condenser pipe temperature low.View all 31 error codes
Service modes (8)
- Address Monitoring Mode (Wireless Remote)Press Chaos Swing (button 6) and Reset (button 13) keys simultaneously.
- Address Setting Mode (Wired Remote)Press Program (button 13) and Set/Clear (button 16) keys simultaneously for more than 3 seconds…
- Address Setting Mode (Wireless Remote)Press Jet Cool (button 5) and Reset (button 13) keys simultaneously for more than 3 seconds. Set…
- ESP (External Static Pressure) Setting (Duct Type)1
- Forced Operation (Indoor Unit)Set the slide switch on the main unit to the forced operation position
- Test Run (Cassette Type - Start by button press)Press the forced operation button for 2 seconds for forced operation
- Test Run (CST Type - Wired Remote)Press the room temperature checking button and down timer button simultaneously for 3 seconds.
- Test Run (Room Type)Press the timer cancel button five times continuously.
Full entry steps, exit procedures, and test sequences are available in Max.
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