Indoor Fan Motor Abnormality - Daikin REYQ-XA Service Manual

SiUS371901E
3.7

Indoor Fan Motor Abnormality

3.7.1 Indoor Fan Motor Abnormality (FXDQ-M, FXHQ-M)
A6
Error Code
Applicable FXDQ-M, FXHQ-M
Models
Method of Error This error is detected if there is no revolutions detection signal output from the fan motor.
Detection
Error Decision
When no revolutions can be detected even at the maximum output voltage to the fan
Conditions
Supposed
Causes
Troubleshooting
Service Diagnosis
Defective indoor fan motor
Broken wires
Defective contact
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Is
the X4A
connector securely
connected?
YES
Is
the
power of 12
VDC supplied
between the Pins 1
and 3 when the X4A is
disconnected and
the power
supply turns
ON?
NO
CHECK 16 Refer to page 390.
NO
YES
Troubleshooting by Error Code
Properly connect the
connectors.
(At this time, check for any
defective connector contact or
broken wires.)
CHECK 16
Check the indoor fan motor
(M1F) and the wiring circuits of
the motor.
Replace the indoor unit control
PCB (A1P).
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