42 Room Air Conditioner
• 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, CN-L/R Connector
• Check the soldering condition(on PWB) of CN-U/D, CN-L/R Connector
Check the operating circuit of the Vertical Louver
• Confirm that there is DC
+
12V between pin (RED) of CN-U/D, CN-L/R
and GND.
• Confirm that there is a soldering short at following terminals.
- Between 62 , 61 , 60 and 59 of MICOM
- Between
57 , 56 , 55 and 54 of MICOM
- Between
51 , 50 , 49 and 48 of MICOM
- Between 1 , 2 , 3 , 4 and 5 of CN-U/D, CN-L/R
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
6. When Vertical Louver does not operate.
Troubleshooting Guide
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