Dc Fan Lock - Daikin B-Series Service Manual

Troubleshooting
4.9

DC Fan Lock

E7
Remote
Controller
Display
Method of A fan motor or related error is detected by checking the high-voltage fan motor rpm being
Malfunction detected by the Hall IC.
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Troubleshooting
Check No.15
Refer to P.149
120
The fan does not start in 30 seconds even when the fan motor is running.
The system will be shut down if the error occurs 16 times.
Clearing condition: Continuous run for about 5 minutes (normal)
Fan motor breakdown
Harness or connector disconnected between fan motor and PCB or in poor contact
Foreign matters stuck in the fan
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Fan motor connector
disconnected?
NO
Foreign matters in or
around the fan?
NO
Get started.
Check No. 15
Check the outdoor unit PCB rpm
pulse input.
Pulse signal inputted?
YES
YES
YES
NO
Si04-306E
Turn off the power and
reconnect the connector.
Remove.
Replace the outdoor unit fan
motor.
Replace the outdoor unit
PCB.
(R7139)
Service Diagnosis