Aiwa -09CHSRINV/TP11 Service Manual page 44

3.2.6 EF---ODU DC fan motor failure
Check the fan blade by
hand, can it rotate freely
Fan motor well
connect to PCB
1. For built-in control (5pins)
motor: check the V
V =15V?
cc
2. For external control (3pins)
motor: test voltage btw U/V/W ,
normally from DC 20~200V.
Replace fan motor
Works normal?
Air Conditioner Service Manual
Shut off
No
Yes
No
Yes
=310V?
m
No
No
Yes
End
Re install the DC motor
Works normal?
No
Re-connect
Works normal?
No
Yes
Check the fan motor,
can it operate or not.
Works normal?
No
Replace ODU PCB
Yes
Yes
Yes
47