When Vertical Louver Does Not Operate - LG ATNH126ELFC Service Manual

Indoor unit ceiling cassette-4way ceiling & floor(convertible) ceiling concealed duct outdoor
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When Vertical Louver does not operate

Trouble 6
• 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-U/D Connector
• Check the soldering condition(on PWB) of CN-U/D Connector
• Confirm that there is DC + 12V between pin
GND.
• 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
If there are no problems after above checks
Troubleshooting Guide
(RED) of CN-U/D and
Service Manual 111

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