- LG - Life's Good Air Conditioner User Manual

Service Manual 53
Troubleshooting Guide
When Louvers do not operate.
Confirm that the Louver is normally geared with the shaft of Stepping
Motor.
If the regular torque is detected when rotating the Louver with hands
Normal
Check the connecting condition of CN-UD, LR1, LR2 Connector.
Check the soldering condition(on PWB) of CN-UD LR1, LR2 Connector.
If there are no problems after above checks
Confirm the assembly conditions that are catching and interfering parts
in the rotation radial of the Louvers.
Check the operating circuit of the Louvers.
Confirm that there is DC
+
12V between pin of CN-UD and GND.
Confirm that there is a soldering short at following terminals.
-
Between , , , , , , , , , , , of MICOM
- Between
of IC02M
- Between ,
of IC03M
- Between , , , , , , , of IC04M
- Between , , , of CN-UD/LR1/LR2
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