Daikin FCQ18PVJU Service Manual page 98

Troubleshooting by Indication on the Remote Controller
Troubleshooting
91
Be sure to turn off the power switch before connecting or disconnecting
Caution
the connector, or parts could be damaged.
NO
Is power supply
208~230V provided?
YES
Indoor unit
NO
is a model equipped
with a louver
function
YES
The louver
motor works when
YES
the power supply is turned
off and then back
on.
NO
After
turning
the louver
ON and then stopping
with the remote controller,
the voltage of X6A (or X29A)
NO
of the indoor unit P.C.B. is
208 ~ 230 VAC
when turned on
again (within 30
seconds of
turning on
again).
YES
YES
The connecting cable
has no continuity.
NO
When
the airflow
direction louver's cam
NO
mechanism is disconnected
from the louver motor,
operation is normal
when turned
on again.
YES
The connector
NO
is connected to X9A (or X15A) of
the indoor unit
P.C.B.
YES
NO
The limit switch
functions normally.
YES
The connecting
YES
cable is short-circuited
or disconnected.
NO
SiUS28-902_a
Provide 208~230V power
supply.
Replace the indoor unit P.C.B.
Connect the connector to X9A
and turn on again.
Replace the louver motor.
Replace the limit switch
connecting cable.
Replace the indoor unit P.C.B.
Replace the power supply
connecting cable.
Replace the louver motor.
Take the cam mechanism
apart, reassemble and turn on
again.
Troubleshooting