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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 ➅)
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