Daikin FTXN50L - E7: Outdoor Fan Motor Lock

Service Diagnosis
45
E7
Description
OUTDOOR FAN MOTOR LOCK
Possible Root
cause
1. Fan motor breakdown.
2. Harness or connector disconnected between fan motor and PCB or in poor contact.
3. Foreign matter stuck in fan.
4. Defective outdoor unit PCB.
Troubleshooting
Turn on the power.
Check rotation pulse input
on outdoor unit PCB.
Fan rotates
smoothly?
No
Yes
Turn off power and
reconnect connector.
Fan motor
connector
disconnected?
No
Yes
Foreign
matters in or
arround fan?
No
Rotate the fan.
Yes
Remove foreign matters.
Replace outdoor fan motor.
Yes
Replace outdoor PCB.
Pulse signal
generated?
No
Replace outdoor fan motor.
*Remark:
Refer Appendix A for rotation pulse check.(Page 76, item 6.5)