LG HBLG1004R Service Manual page 28

Troubleshooting Guide
Possible Trouble 4
Is the voltage NO.1 or 2 or 4
of IC01M DC 12V?
YES
Is the voltage NO.16 or 15 or 13
of IC01M 0V?
YES
• Check the RY-Hi or
RY-Med or RY-Lo.
• Check the wiring diagram.
Possible Trouble 5
Is the mode
key pushed once more from
cool mode?
YES
Is the voltage No.3 of
CN-AC/DC of AC PCB
Ass'y DC 5V?
YES
• Reference to
OWNER'S MANUAL.
28 Room Air Conditioner
FAN does not operate.
NO
NO
The function of Energy Saver does not operate.
NO
NO
• Replace IC01M.
• Replace IC01M.
• Set the mode key to
Energy Saver mode.
• Check the Energy
Saver mode key.
• Check the pattern of
AC & DC PCB.