Daikin VRV IV-S RXTQ-TAVJU Series, Service Manual

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SiUS331604E Troubleshooting by Error Code
Service Diagnosis 142
4.5 Indoor Fan Motor Abnormality
4.5.1 Indoor Fan Motor Abnormality (FXDQ, FXHQ Models)
Error Code
A6
Applicable
Models FXDQ, FXHQ
Method of Error
Detection This error is detected if there is no revolution detection signal output from the fan motor.
Error Decision
Conditions When no revolutions can be detected even at the maximum output voltage to the fan
Supposed
Causes
„
Defective indoor fan motor
„
Broken wires
„
Defective contact
Troubleshooting
YES
NO
NO
YES
Check the indoor fan motor and
the wiring circuits of the fan
motor.
Replace the indoor unit main
PCB (A1P).
Properly connect the connectors.
(At this time, check for any
defective connector contact or
broken wires.)
Is the
X4A
connector securely
connected?
Is the
power of
12 VDC
supplied between
the Pins 1 and 3 when
the X4A is disconnected
and the power
supply turns
ON?
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.