Indoor Fan Motor (Dc Motor) Or Related Abnormality - Daikin CTX Series Service Manual

Troubleshooting
4.4

Indoor Fan Motor (DC Motor) or Related Abnormality

A6
Error Code
Description
Indoor Fan Motor Abnormality
Method of Error The rotation speed detected by the Hall IC during fan motor operation is used to determine
Detection abnormal fan motor operation.
Error Decision
The detected rotation speed does not reach the demanded rotation speed of the target tap, and
Conditions is less than 50% of the maximum fan motor rotation speed.
 Indoor fan motor winding short, or the motor lead wire broken.
Supposed
 Indoor PCB faulty.
Causes
Troubleshooting
58
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Caution
Turn off power supply and
rotate fan by hand
Does it rotate?
Yes
Check fan motor connector condition
Does it connect
properly?
Yes
Replace the indoor unit PCB
(control PCB) and turn on power
Is error repeated?
Yes
No
No
No
DAMA-SM-21-003
Change fan motor.
Connect correctly.
Complete.
Change Fan motor.
Service Diagnosis