Ef Outdoor Dc Fan Motor Failure - Friedrich Chill Premier Inverter Series Service Manual

3.2.6 EF---Outdoor DC fan motor failure

EF Outdoor DC fan motor failure

1. For external control (3pins)
motor: test voltage btw U/V/W ,
normally from AC 20~200V.
30
TROUBLESHOOTING
Shut off
Check the fan blade by
hand, can it rotate freely
Yes
Fan motor well connect
to PCB
Yes
No
Replace fan motor
Works normal?
Yes
End
No
Re install the DC motor
Works normal?
No
No
Re-connect
Works normal?
No
Yes
Check the fan motor,
can it operate or not.
Works normal?
No
No
Replace Main PCB
Yes
Yes
Yes
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