Power off and restart the
unit after 3 minutes. Does
the problem remain?
Shut off the power supply.
..dnah yb naf eht etatoR
Does it turn easily?
The unit is operating normally
Find the cause of the
problem and resolve it
No
Yes
No
Correct the connections.
No
No
Replace the fan motor
Yes
Yes
Measure the voltage for the
fan motor from the main
PCB. Is it within normal
parameters?
Yes
Replace the main PCB
No
Check the fan motor wiring.
Is it wired correctly?
DLCM(R/H)B: Service Manual
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