LG Electronics LCN240CP Air Conditioner User Manual


 
Service Manual 37
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 PWB) of CN-U/D 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 Vertical Louver
Check the operating circuit of the Vertical Louver
Confirm that there is DC
+
12V between pin (RED) of CN-U/D and
GND.
When Vertical Louver does not operate
Trouble 5