Model reference
LG A2UH146FA0
Air Conditioner
1 document9 error codes2 service modes
Available documentation
Service Manual
- LG Free Joint Multi Type Air Conditioner SERVICE MANUAL78 pg
MyPros+ Max
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- 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 (9)
CodeMeaning
1Indoor air temperature thermistor open/short.2Indoor inlet pipe temperature thermistor open/short.44Outdoor air temperature thermistor open/short.45Outdoor pipe temperature thermistor open/short.5Poor communication between indoor and outdoor units.51Overload combination6Indoor outlet pipe temperature thermistor open/short.7Different operation9Indoor EEPROM data error (Art type only).Service modes (2)
- forced_operationPress the power button on the main unit (when remote control cannot be used).
- test_operationOpen the front panel upward, press and hold the power button for about 3 seconds.
Full entry steps, exit procedures, and test sequences are available in Max.
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