: Indoor Temperature Sensor Error . This usually indicates an open or closed circuit in the indoor air thermistor.
: Inverter/Compressor Error . Points to a problem with the compressor power supply or phase.
: Input Voltage Error . The CT2 voltage input is too high (above 14 A). Lg Inverter Ac Error Codes
: Communication Error . Specifically between the evaporator and condenser units. Quick Troubleshooting Steps Troubleshooting LG AC CH05 Error: A Quick Guide - Ftp
: Outdoor Fan Motor Error . The outdoor fan motor has failed or is blocked. : Indoor Temperature Sensor Error
: Inlet Pipe Sensor Error . A fault with the indoor unit's inlet pipe thermistor.
: DC Link Low Voltage . The DC voltage has dropped below 140V. Points to a problem with the compressor power
: Indoor Fan Motor Error . The indoor fan is not rotating correctly.