When Vertical Louver Does Not Operate - LG LAN091CNP, LAU091CNP, LAN121CNP Service Manual
Lg room air conditioner service manual
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Also See for LAN091CNP, LAU091CNP, LAN121CNP:
- Service manual (76 pages) ,
- Manual (76 pages) ,
- Owner's manual (31 pages)
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When Vertical Louver does not operate.
• 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
• Check the connecting condition of CN-UP/DOWN Connector
• Check the soldering condition(on PWB) of CN-UP/DOWN Connector
• Confirm that there is DC + 12V between pin (RED) of CN-UP/DOWN and
GND.
• Confirm that there is a soldering short at following terminals.
- Between
- Between
- Between
- Between
• Confirm the assembly conditions that are catching and interfering parts in
the rotation radial of the Vertical Louver
Normal
Check the operating circuit of the Vertical Louver
,
,
and
of MICOM
77
78
79
80
,
,
and
of IC02M
4
5
6
7
,
,
and
of IC01M
10
11
12
13
,
,
,
and
of CN-UP/DOWN
1
2
3
4
5
If there are no problems after above checks
Troubleshooting Guide
Service Manual 67
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