LG LS-J0762YL, Service Manual

Page: 59 / 79

-59-
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
➅
)
Trouble 7-1
NO
YES
Is the connecting state of connectors in
outdoor. 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(22 pin) over
than about DC280V?
• Check the DC voltage between IPM 2pin
GND
NO
YES
Is the refrigerant pressure right?
Replace the PCB Ass'y.
• Main PCB Ass'y
• Control Box Ass'y
Supply the refrigerant.
NO
NO