Service manual

6L(1 7URXEOHVKRRWLQJE\,QGLFDWLRQRQWKH5HPRWH&RQWURO
7URXEOHVKRRWLQJ 
7URXEOHVKRRWLQJ
1RWH 5HIHUFKHFNDQGWR3a
Check No. 8
Check on connector of fan
motor (Power supply cable)
Is the LED (HAP) on fan
inverter PCB blinking?
Check No. 9
Check on connector of fan
motor (Signal wire)
Are the
resistance values
between phases of U,
V, W balanced?
Is there any short circuiting
between phases of U,
V, W?
Is the resistance value
between Vcc and UVW, and
GND and UVW balanced?
NO
NO
NO
YES
YES
YES
Check No. 12
Check on pulse input of
position signal of fan inverter
PCB
Replace the fan inverter
PCB.
Replace the fan motor of
outdoor unit.
Replace the fan motor of
outdoor unit.
Replace the fan inverter
PCB.
(V3077)
1A