LG Electronics AS-W126URH1/UBH1/UWH1/UMH1 Air Conditioner User Manual


 
76 Room Air Conditioner
Does the LED01M of outdoor PCB Ass'y
blink 6 times?
Check the state of connecting cable (3 line)
between indoor and outdoor uint.
When compressor does not operate normally.
DC Peak Error(Error Code )
Trouble 8-1
NO
YES
Is the connecting state of connectors in out-
door. PCB Ass'y right?
(CN-UVW)
Electrical wiring diagram (Colors)
Check the connecting state of connectors
in PCB Ass'y
If CN-UWV is connected, the comprressor
can be operated a opposite direction.
NO
YES
Is the power module in PCB Ass'y right?
Check the short P-N P-U, V, W, and N-U,
V, W of IPM and then collector, emiter of
IGBT
NO
YES
Is the voltage of T/Block , over than
AC150V?
Check the supplied voltage.
NO
YES
Is the voltage of GND-IPM(32 pin) over
than about DC280V?
Check the DC voltage between IPM 1pin
GND
NO
YES
Is the refrigerant pressure right?
Replace the PCB Ass'y.
Main PCB Ass'y
Control Box Ass'y
Supply the refrigerant or Discharge refriger-
ant.
NO
NO
Troubleshooting Guide