Daikin VRV RXYQ72-384XAYCA, Service Manual

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SiUS342004EB Troubleshooting by Error Code
Part 6 Service Diagnosis 246
3.12 Swing Flap Motor Abnormality
Applicable
Models
FXHQ-M, FXAQ-P
Error Code
A7
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 control 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
control PCB. ( 1)
Go to the next page.
Replace the limit switch
relay cable.
Replace the indoor unit control
PCB (A1P).
NO
YES
YES
NO
YES
Connect the connector ( 1)
and turn the power supply on
again.
Replace the indoor unit control
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).
A