Dc Fan Lock - Daikin 3MKS50E3V1B Service Manual

SiBE121135
7.9

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.332
Service Diagnosis
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, the system is shut down.
Reset condition: Continuous run for about 5 minutes without any other error
Disconnection of the fan motor
Foreign matter stuck in the fan
Defective fan motor
Defective outdoor unit PCB
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 matter 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
Troubleshooting for Outdoor Unit
Turn off the power and
reconnect the connector.
Remove the foreign matter.
Replace the outdoor fan
motor.
Replace the outdoor fan
motor.
Replace the outdoor unit
PCB.
(R15890)
307