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