Daikin RXSQ24TAVJU, Service Manual

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Troubleshooting by Error Code SiUS331708EA
175 Service Diagnosis
4.12 Swing Flap Motor Abnormality
Error Code
A7
Applicable
Models
FXFQ, FXZQ-M, FXUQ-P, FXEQ-P, FXHQ-M, FXAQ-P
Method of Error
Detection
Utilizes ON/OFF of the limit switch when the motor turns.
Error Decision
Conditions
When ON/OFF of the micro-switch for positioning cannot be reversed even though the swing flap
motor is energized for a specified amount of time (about 30 seconds).
∗
Error code is displayed but the system operates continuously.
Supposed
Causes
„
Defective swing motor
„
Defective connection cable (power supply and limit switch)
„
Defective airflow direction adjusting flap-cam
„
Defective indoor unit main PCB
Troubleshooting
Indoor unit is
a model equipped with a
swing flap function
The swing
motor works when
the power supply is turned OFF
and then restart.
The relay
cable is short circuited
or disconnected.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Provide 208-230 V power
supply.
YES
NO
The
connector is
connected to the indoor
unit PCB. (
∗
1)
Replace the limit switch
relay cable.
Replace the indoor unit main
PCB (A1P).
NO
YES
YES
NO
YES
Connect the connector (
∗
1)
and turn the power supply on
again.
Replace the indoor unit main
PCB (A1P).
NO
NO
YES NO
YES
YES
NO
Replace the defective
swing motor. (
∗
2)
Is power supply 208-
230 V provided?
The limit switch
functions normally.
After
turning
the swing-flap
ON and then
stopping with the
remote controller, the
voltage of the connector
(
∗
1) is 208-230 VAC
when turned ON
again (within 30
seconds of
turning ON
again).
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