Operation Halt Due To Fan Motor (Ac Motor) Or Related Abnormality - Daikin FTK25JV1NB Manual

Si-86.book Page 61 Friday, June 23, 2000 10:26 AM
SIE-86
5.5 Operation Halt Due to Fan Motor (AC Motor) or Related Abnormality.(A6)
A A A A 6 6 6 6
Remote Controller
Display
Indoor unit LED
Display
Method of The rotation speed detected by the hall IC during fan motor operation is used to determine abnormal fan
Malfunction motor operation.
Detection
Malfunction
When the detected rotation speed is less than 50% of the HH tap under maximum fan motor rotation
Decision
demand.
Conditions
Supposed Causes
Troubleshooting
Check No.16
Rerer to P.83
Service Diagnosis
Operation halt due to short circuit inside the fan motor winding.
Operation halt due to breaking of wire inside the fan motor.
Operation halt due to breaking of the fan motor lead wires.
Operation halt due to faulty capacitor of the fan motor.
Detection error due to faulty indoor unit PCB (1).
Operate the fan.
YES
Does it rotate?
Check No. 16
NO
Check hall IC
Rotate the fan by hand.
NO
Does it rotate smoothly?
Check the fan motor voltage.
YES
Check the fan motor voltage.
(immediately after re-start)
NO
Is it at the rated voltage?
YES
Check the capacitor's conductivity
YES
Is there conductivity?
NO
NO
Is there an output?
Replace the fan motor or indoor unit
PCB.
YES
Replace the fan motor
∗2 Measure the voltage between the
red and black lead wires of the fan
motor, and check if the maximum
voltage reaches the rated voltage.
NO
Replace indoor unit PCB (1).
Is it at the rated voltage?
YES
Replace the fan motor.
Replace the indoor unit PCB (1)
Replace the capacitor.
(Replace PCB (1).)
Replace the fan motor.
Troubleshooting
(MF002)
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