Daikin RXYQ72 Serivce Manual page 137

Troubleshooting by Indication on the Remote Controller
Troubleshooting
126
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Is power supply
208~230V provided?
YES
Indoor unit
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
unit PC board is 208 ~ 230V
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
NO
NO
The connector
is connected to X9A of
the indoor unit PC
board.
YES
The limit switch
functions normally.
YES
The connecting
cable is short-circuited
or disconnected.
NO
NO
Provide 208~230V power
supply.
Replace indoor unit PC board.
NO
Connect the connector to X9A
and turn on again.
NO
Replace swing motor.
YES
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.
Troubleshooting
SiUS39-601
(V2780)