When Compressor Does Not Operate Normally - LG A2UN186FA0 Service Manual

When compressor does not operate normally.

Trouble 7-1
Communication error between Indoor and Outdoor (Error Code
Does the operating LED in display PCB
Ass'y blink 5 times?
Is the connecting state of connector out-
door PCB Ass'y right.
Is the connection of CN-DATA between
indoor and outdoor unit right?
Replace the PCB Ass'y.
• Main PCB Ass'y (Indoor/Outdoor)
NO
YES
NO
YES
NO
YES
-97-
)
• Check the state of connecting cable
(4 line) bewteen indoor and outdoor unit .
• Electrical wiring diagram(Colors)
• Check the connecting state
of connectors in outdoor PCB Ass'y
(CN_Data - Terminal Block.)
• Reconnect the cable to terminal block.
• Check the PCB pattern(Resoldering).