Daikin R407C PLUS - Indoor Unit: Malfunction of Swing Flap Motor (M1 S)

Si33-105 Troubleshooting
Troubleshooting R407C PLUS Series Heat Recovery System 161
3.5 Indoor Unit: Malfunction of Swing Flap Motor (M1S)
Remote
Controller
Display
A7
Supposed
Causes
!
Defect of swing motor
!
Defect of connection cable (power supply and limit switch)
!
Defect of air flow direction adjusting flap-cam
!
Defect of indoor unit PC board
Troubleshooting
Replace the limit switch
connecting cable.
Replace indoor unit PC board.
Replace the power supply
connecting cable.
Replace swing motor.
Take the cam mechanism apart,
reassemble and turn on again.
YES
NO
YES
YES
NO
YES
NO
Connect the connector to X9A
and turn on again.
Replace indoor unit PC board.
NO
NO
YES
NO
YES
NO
YES
YES
NO
Indoor unit
is a model equipped with
a swing flap
function
The swing
motor works when the
power supply is turned off
and then back
on.
When
the air flow
direction flap's cam
mechanism is
disconnected from the swing
motor, operation is
normal when
turned on
again.
The connecting cable
has no continuity.
After
turning
the swing-flap
ON and then
stopping with the
remote controller, the
voltage of X6A of the indoor
unit PC board is 220 ~ 240
VAC (60 Hz) / 220 VAC
(50 Hz) when turnedon
again (within 30
seconds of
turning on
again).
The connector
is connected to X9A of
the indoor unit PC
board.
The limit switch
functions normally.
The connecting
cable is short-circuited
or disconnected.
Replace swing motor.
(VF032)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.