Dc Fan Lock - Daikin Super Multi NX FFQ25B8V1B Service Manual

Troubleshooting for Outdoor Unit
7.5

DC Fan Lock

E7
Remote
Controller
Display
Outdoor Unit LED A
Display
Method of An error is determined with the high-voltage fan motor rotation speed detected by the Hall IC.
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Troubleshooting
Check No.16
Refer to P.367
338
j i i i
1 2 3 4
The fan does not start in 30 seconds even when the fan motor is running.
If the error repeats 16 times, the system is shut down.
Reset condition: Continuous run for about 5 minutes without any other error
Defective fan motor
Disconnection of the fan motor
Foreign matters stuck in the fan
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Fan motor connector
disconnected?
NO
Foreign matters in or
around the fan?
NO
Turn on the power.
Rotate the fan.
Fan rotates
smoothly?
YES
Check No. 16
Check the rotation pulse input on
the outdoor unit PCB.
Pulse signal generated?
YES
i h
5
YES
YES
NO
NO
SiBE121021_C
Turn off the power and
reconnect the connector.
Remove them.
Replace the outdoor fan
motor.
Replace the outdoor fan
motor.
Replace the outdoor unit
PCB.
(R14410)
Service Diagnosis