When The Louver Does Not Operate - LG AMNH076LQL0 Service Manual

Troubleshooting Guide
Trouble 5
• 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 or CN0L/R Connector
• Check the soldering condition(on PCB) of CN-U/D or CN0L/R Connector
• Confirm that there is DC +12V between pin
• Confirm that there is a soldering short at following terminals.
- Between
- Between
• Confirm the assembly condition that are catching and interfering parts in the link of the
vertical louver
180 Multi type Air Conditioner

When the louver does not operate.

Check the operating circuit of the vertical louver
, , and of MICOM
1 2 3 4
, , and of IC01M
4 5 6 7
If there are no problems after above checks.
of CN-U/D, CN0L/R and GND.
- Between , , and
17 18 19
- Between , , and
5 6 7
of MICOM
20
of IC01M
8