Daikin E Series User Manual

Troubleshooting for RA Indoor Unit SiAU18-715
324 Troubleshooting
4.3 Fan Motor or Related Abnormality
4.3.1 AC Motor (Duct, Floor / Ceiling)
Remote
Controller
Display
A6
Method of
Malfunction
Detection
The rotation speed detected by the Hall IC during fan motor operation is used to determine
abnormal fan motor operation.
Malfunction
Decision
Conditions
When the detected rotation speed does not reach the demanded rotation speed of the target
tap, and is less than 50% of the maximum fan motor rotation speed.
Supposed
Causes

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 control PCB.
Troubleshooting
Check No.16
Refer to P.330
NO
NO
NO
Check No. 16
Check Hall IC
NO
NO
NO
YES
YES
YES
YES
YES
YES
(R7132)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Replace the fan motor or control
PCB.
Replace the fan motor.
Replace control PCB.
∗ Measure the voltage between
the red and black lead wires of
the fan motor, and check if the
maximum voltage reaches the
rated voltage.
Replace the capacitor.
(Replace the control PCB.)
Replace the fan motor.
Replace the fan motor.
Replace the control PCB.
Does it rotate?
Is there an output?
Is it at the rated voltage? ∗
Does it rotate smoothly?
Is it at the rated voltage? ∗
Is there conductivity?
Operate the fan.
Rotate the fan by hand.
Check the fan motor voltage.
Check the fan motor voltage.
(immediately after re-start)
Check the capacitor's conductivity

Daikin E Series Specifications

General

Brand	Daikin
Model	E Series
Category	Air Conditioner
Language	English