LG Electronics AS-W126URH1/UBH1/UWH1/UMH1 Air Conditioner User Manual


 
Service Manual 73
Troubleshooting Guide
Confirm that the vertical louver is normally geared with the shaft of Stepping Motor.
If the regular torque is detected when rotating the vertical louver with hands Normal
Check the connecting condition of CN-U/D Connector
Check the soldering condition(on PCB) of CN-U/D Connector
Check the operating circuit of the vertical louver
Confirm that there is DC +12V between pin of CN-U/D and GND.
Confirm that there is a soldering short at following terminals.
- Between
41
,
42
,
43
and
44
of MICOM
- Between
4
,
5 , 6
and
7
of IC01M
- Between
10
,
11 , 12
and
13
of IC01M
When the horizontal louver does not operate.
Trouble 5
If there are no problems after above checks.
Confirm the assembly condition that are catching and interfering parts in the link of the
vertical louver