LG A2UN186FA0 - Page 98

-98-
When compressor does not operate normally.
■ CT Error (Error Code )
Trouble 7-2
Does the operating LED in Display PCB
Ass'y blink 8 times?
• Check the state of connecting cable
(3 line) bewteen Indoor and Outdoor Unit .
• Check fuse, Noise Filter, PTC, etc.
NO
YES
Is the current transformer(CT) in Main PCB
Ass'y right?
Check the PCB pattern(resoldering)
NO
YES
Is the indoor/outdoor fan locked?
Check the indoor/outdoor fan motor.
NO
YES
Is the connecting state of connectors right?
(CN-IPM, U.V.W and Compressor wires)
Check the state of connecting wires.
NO
YES
Is the discharge temperature of Indoor unit
right(11°C~17°C) in the cooling mode?
Check the compressor.
NO
YES
Is the refrigerant pressure right?
Supply the refrigerant
NO
YES
Replace the PCB Ass'y.
• Main PCB Ass'y(Outdoor)
• Control Box Ass'y(Outdoor)