Premium PPA1207 - Synchronous Motor of Fan Leaves Does Not Work

1.Items to be checked
1 Whether input voltage is normal or not
2 Whether the synchronous motor controlling upward and downward motion is connected with ar eliablew ay
2.Flow chart of malfunction diagnosis
CN1 CN2 in
4-2-3 Synchronous motor of fan leaves does not work
Pulling out power supply plug and about five seconds insert again
Core Ic1 failure
CN1 CN2 voltage is normal or not
Check PCB board
While press button "fan swing" on display panel, whether
the horizontal louver swings or not"?
Confirm malfunction diagnosis is no power supply""
Pressing "ON/OFF" on display panel of air conditioner to switch on
Whether the luminous diode tube and digital tube on display panel light on or not
YES
NO
YES
NO
YES
NO
Replace synchronous motor
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