LG Electronics AS-W126URH0/UBH0/UWH0/UMH0/UCH0 Air Conditioner User Manual


 
78 Room Air Conditioner
When compressor does not oprate normally.
CT Error (Error Code )
Trouble 8-3
Does the operating LED in Display PCB
Ass'y blink 7 times?
Check the state of connecting cable
(3 line) bewteen Indoor and Outdoor Unit .
Check fuse, Noise Filter, PTC, etc.
NO
YES
Is the courrent 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 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 or Discharge the
refrigerant.
NO
YES
Replace the PCB Ass'y.
Main PCB Ass'y(Outdoor)
Control Box Ass'y(Outdoor)
Troubleshooting Guide