Dc Fan Lock - Daikin CTXU25G2V1B Service Manual

Troubleshooting

2.19 DC Fan Lock

E7
Remote
Controller Display
Method of Identify the fan motor system fault based on fan speed detected by Hall IC during high pressure
fan motor running.
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Troubleshooting
Check No.23
Refer to P.177
135
When the fan motor is running, the fan does not rotate for 150 seconds or more.
Shut down when the error repeats 16 times
Clear condition: The fan continuously rotates for 11 minutes. (without fault)
Failure in fan motor
Disconnection or improper connection of harness/connector between fan motor and PCB
The fan does not rotate because it gets caught in foreign matter
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Is the connector of
the fan motor
disconnected?
NO
Is there any foreign
matter around the
fan?
NO
Try to operate
Check No. 23
Check the outdoor unit PCB for
rpm command pulse input
Is the pulse input?
YES
YES
YES
NO
SiBE12-908
Turn off the power supply,
then insert the connector.
Remove them.
Replace the outdoor fan
motor.
Replace the outdoor unit
PCB.
(R9440)
Service Diagnosis