Indoor Fan Motor Abnormality - Daikin VRV IV-S RXTQ-TAVJU Series Service Manual

SiUS331604E
4.5

Indoor Fan Motor Abnormality

4.5.1 Indoor Fan Motor Abnormality (FXDQ, FXHQ Models)
A6
Error Code
Applicable FXDQ, FXHQ
Models
Method of Error This error is detected if there is no revolution 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
NO
YES
Troubleshooting by Error Code
Properly connect the connectors.
(At this time, check for any
defective connector contact or
broken wires.)
Check the indoor fan motor and
the wiring circuits of the fan
motor.
Replace the indoor unit main
PCB (A1P).
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