Daikin VRV II RXYQ8MY1K Service Manual page 168

Si39-502A
Troubleshooting
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
NO
Is power supply
220~240V provided?
YES
Indoor unit
NO
is a model equipped
with a swing flap
function
YES
The swing
motor works when
YES
the power supply is turned
off and then back
on.
NO
After
turning
the swing-flap
ON and then
stopping with the
remote controller, the
voltage of X6A of the indoor
NO
unit PC board is 220 ~ 240
VAC (60 Hz) / 220 VAC
(50 Hz) when turnedon
again (within 30
seconds of
turning on
again).
YES
YES
The connecting cable
has no continuity.
NO
When
the air flow
direction flap's cam
NO
mechanism is disconnected
from the swing motor,
operation is normal
when turned
on again.
YES
Troubleshooting by Indication on the Remote Controller
The connector
NO
is connected to X9A of
the indoor unit PC
board.
YES
NO
The limit switch
functions normally.
YES
The connecting
YES
cable is short-circuited
or disconnected.
NO
Provide 220~240V power
supply.
Replace indoor unit PC board.
Connect the connector to X9A
and turn on again.
Replace swing motor.
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.
(V2780)
157