LG HBLG1803R Service Manual page 30

Troubleshooting Guide
Possible Trouble 2
Is desired
Temp. set lower than Room
Temp.-0.5°C?
YES
Is the voltage No.10
of IC01M 0V?
YES
• Check the RY-COMP.
• Check the wiring
Diagram.
Possible Trouble 3
Is the wire connection of
RY-COMP OK?
YES
• Check the RY-COMP.
30 Room Air Conditioner
The compressor does not operate.
NO
NO
Is the voltage N0.9 of
IC01M DC 12V?
• Replace IC01M.
The compressor always operate.
NO
• Select the desired Temp. to lower Number.
NO
YES
Is the Unit for 3 minutes
delay?
YES
• Wait 3 Minutes.
• Replace AC
PCB Ass'y.
• Connect LEAD Wire to
RY-COMP again.
NO