LG Electronics HB8004RA4 Air Conditioner User Manual


 
Service Manual 29
Troubleshooting Guide
Possible Trouble 6 Remote controller does not operate.
Possible Trouble 7 It displays abnormally on DC PCB Ass’y.
NO
NO
NO
NO
YES
YES
YES
Is IC01G good?
Is the connection of
CN-AC/DC
OK?
Replace the DC
PCB Ass'y.
Replace IC01G.
Replace IC03G
(Q01G, Q02G, Q03G
for Delux Model).
Connect connector
to
CN-AC/DC
exactly.
Does the IC03G
(Q01G, Q02G, Q03G for Delux Model)
operate normally on DC
PCB Ass'y?
Check the PCB pattern.
Is the voltage of Battery
over 2.3V?
Replace Receiver Ass'y.
Is the connection of
CN-AC/DC
OK?
Is the voltage No.10
of CN-AC/DC on DC PCB
Ass'y DC 5V?
Replace the battery.
Check the PCB pattern.
Connect connector to
CN-AC/DC
exactly.
NO
NO
NO
YES
YES
YES