Lg Air Conditioning Error Codes
Flashing Light = 1
Fault = Indoor temperature sensor open or closed circuit.
Display = Indoor.
Indoor Operation = ON
Error code = C2 or CH2
Flashing Light = 2
Fault = Outdoor temperature sensor open or
closed circuit.
Display = Indoor Outdoor.
Indoor Operation = ON
Error code = C4 or CH4
Flashing Light = 4
Fault = Heat sink temperature sensor open or closed circuit.
Display = Indoor Outdoor.
Indoor Operation = ON
Error code = C5 or CH5
Flashing Light = 5
Fault = Communication between indoor and outdoor units.
Display = Indoor Outdoor
Indoor Operation = OFF
Error code = C6 or CH6
Flashing Light = 6
Fault = Excessive current at inverter DC power circuit.
Display = Indoor Outdoor
Indoor Operation = SHUTDOWN
Error code = C7 or CH7
Flashing Light = Excessive compressor current
Fault = 7
Display = Indoor Outdoor
Indoor Operation = SHUTDOWN
Error code = C8 or CH8
Flashing Light = 8
Fault = Indoor fan not rotating.
Display = Indoor
Indoor Operation = OFF
Error code = C9 or CH9
Flashing Light = 9
Fault = Outdoor fan not rotating.
Display = Indoor Outdoor
Indoor Operation = OFF
Error code = CA
Flashing Light = 10
Fault = 1. Discharge temp more than130 °C 2. Faulty discharge thermistor
Display = Indoor Outdoor
Indoor Operation = ON
Error code = CC
Flashing Light = 2+1
Fault = EEPROM error
Display = Outdoor
Indoor Operation = ON
Error code = CD
Flashing Light = 3+1
Fault = Inverter module error
Display = Outdoor
Indoor Operation = ON
Error code =
Flashing Light =
Fault = System in Power Mode – not a fault
Display = Indoor
Indoor Operation =
Error code = Lo
Flashing Light =
Fault = System in test mode – not a fault
Display = Indoor
Indoor Operation =
