: Inlet Pipe Sensor Error . A fault with the indoor unit's inlet pipe thermistor.
: Communication Error . This is one of the most common codes, signifying a communication failure between the indoor and outdoor units. It often requires a technician to check for loose wiring or a faulty PCB. Lg Inverter Ac Error Codes
: Outlet Pipe Sensor Error . A fault with the indoor unit's outlet pipe thermistor. : Inlet Pipe Sensor Error
: Communication Error . Specifically between the evaporator and condenser units. Quick Troubleshooting Steps Troubleshooting LG AC CH05 Error: A Quick Guide - Ftp This is one of the most common codes,
: Input Voltage Error . The CT2 voltage input is too high (above 14 A).
: Discharge Temperature Error . The discharge temperature has exceeded 130°C, likely due to a faulty discharge thermistor or low refrigerant.
: Inverter/Compressor Error . Points to a problem with the compressor power supply or phase.