Model reference
LG LRNN092SPM0
Air Conditioner
1 document82 error codes3 service modes
Available documentation
Service Manual
- Air Conditioner System SERVICE MANUAL406 pg
MyPros+ Max
Diagnose your LG LRNN092SPM0.
- Step-by-step diagnostics from the service manual
- Test values, resistance specs, and wiring references
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Error codes (82)
CodeMeaning
01Indoor unit air temperature sensor open or short circuit.02Indoor unit inlet pipe temperature sensor open or short circuit.03Communication error between wired remote controller and indoor unit (no signal…04Drain pump malfunction (float switch opens due to condensed water not draining).05Communication error between outdoor unit and indoor unit (no signal received…06Indoor unit outlet pipe temperature sensor open or short circuit.07Indoor unit is operating in a different operation mode from the previously…09Indoor unit EEPROM error (serial number is 0 or FFFFFF).100Discharge temperature of Sub1 outdoor unit No.1 constant speed compressor too…101Discharge temperature of Sub1 outdoor unit No.2 constant speed compressor too…102Discharge temperature of Sub2 outdoor unit No.1 constant speed compressor too…103Discharge temperature of Sub2 outdoor unit No.2 constant speed compressor too…104Communication error between outdoor units (Sub1 outdoor unit to main outdoor…105Communication error between main PCB and fan driving PCB (fan to outdoor unit).106Over-current at main outdoor unit fan motor (IPM fault).107Low voltage of main outdoor unit fan motor.108Communication error from outdoor unit control part to fan driving control part.109High pressure switch of Sub1 outdoor unit activated due to high pressure…1103-phase wrong wiring of Sub1 outdoor unit (reverse phase or omission of phase).111Communication error between outdoor units (main outdoor unit to Sub1 outdoor…113Main outdoor unit liquid pipe temperature sensor open or short.114Main outdoor unit excessive cooling inlet temperature sensor open or short.115Main outdoor unit excessive cooling outlet temperature sensor open or short.116Sub1 outdoor unit high pressure sensor open or short.117Sub1 outdoor unit low pressure sensor open or short.118Sub1 outdoor unit air temperature sensor open or short.120Sub1 outdoor unit suction temperature sensor open or short.121Sub1 outdoor unit constant speed compressor1 discharge temperature sensor open…122Sub1 outdoor unit constant speed compressor2 discharge temperature sensor open…123Sub1 outdoor unit heat exchanger sensor (front side) open or short.View all 82 error codes
124Sub1 outdoor unit heat exchanger sensor (rear side) open or short.125Sub1 outdoor unit liquid pipe temperature sensor open or short.126Sub1 outdoor unit excessive cooling inlet temperature sensor open or short.127Sub1 outdoor unit excessive cooling outlet temperature sensor open or short.128Sub2 outdoor unit high pressure sensor open or short (3 units).129Sub2 outdoor unit low pressure sensor open or short (3 units).130Sub2 outdoor unit air temperature sensor open or short (3 units).132Sub2 outdoor unit suction temperature sensor open or short (3 units).133Sub2 outdoor unit constant speed compressor1 discharge temperature sensor open…134Sub2 outdoor unit constant speed compressor2 discharge temperature sensor open…135Sub2 outdoor unit heat exchanger temperature sensor (front side) open or short…136Sub2 outdoor unit heat exchanger temperature sensor (rear side) open or short…137Sub2 outdoor unit liquid pipe temperature sensor open or short (3 units).138Sub2 outdoor unit excessive cooling inlet temperature sensor open or short (3…139Sub2 outdoor unit excessive cooling outlet temperature sensor open or short (3…140High pressure switch of Sub2 outdoor unit (3 units) activated.1413-phase wrong wiring of Sub2 outdoor unit (reverse phase or omission of phase).142Communication error between outdoor units (main outdoor unit to Sub2 outdoor…143High pressure rise of Sub1 outdoor unit causing compressor off.144Low pressure drop of Sub1 outdoor unit causing compressor off.145High pressure rise of Sub2 outdoor unit causing compressor off.146Low pressure drop of Sub2 outdoor unit causing compressor off.147Short voltage or excess voltage of Sub1 outdoor unit (more than 487V or less…148Voltage sensor of Sub1 outdoor unit open or short.149Short voltage or excess voltage of Sub2 outdoor unit (3 units).150Voltage sensor of Sub2 outdoor unit open or short (3 units).151Failure of operation mode conversion (pressure unbalance between outdoor units…21DC peak22Maximum over current (MAX CT) or minimum current detected in inverter…23DC link voltage not charged after starting relay turn on for inverter…24Compressor stops by high pressure switch of main outdoor unit.25Input voltage is more than 487V or less than 270V (low/over voltage).32Discharge temperature of main outdoor unit inverter compressor too high…33Discharge temperature of main outdoor unit constant speed compressor too high…34High pressure rise of main outdoor unit causing compressor off by excessive…35Low pressure drop of main outdoor unit causing compressor off by excessive low…40Current detect (CT) sensor of main outdoor unit inverter compressor open or…41Discharge temperature sensor of main outdoor unit inverter compressor open or…42Outdoor low pressure sensor of main outdoor unit open or short.43Outdoor high pressure sensor of main outdoor unit open or short.44Outdoor air sensor of main outdoor unit open or short.45Heat exchanger sensor of main outdoor unit (front side) open or short.46Suction temperature sensor of main outdoor unit open or short.47Discharge temperature sensor of constant speed compressor of main outdoor unit…48Heat exchanger sensor of main outdoor unit (rear side) open or short.51Excessive connection of indoor units compared to capacity of outdoor unit.52Communication error between inverter PCB and main PCB (failing to receive…53Communication error between indoor unit and main outdoor unit PCB (failing to…543-phase wrong wiring of main outdoor unit (reverse phase or omission of phase).57Transmission related error from main control part to inverter control part.62Excessive temperature of inverter control part heatsink (overheat of IPM).65Fan temperature sensor open or short.
Service modes (3)
- auto_addressing["Ensure power is connected to all indoor and outdoor units.","Ensure all DIP switch settings are…
- forced_operation_indoor["Press the Forced Operation Button on the indoor unit.","Unit determines operation mode based on…
- test_operation_indoor_wall_mounted["Open the front panel upward.","Press and hold the forced operation (power) button for…
Full entry steps, exit procedures, and test sequences are available in Max.
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