Panasonic U-4..6ML5XPQ, Service Manual

Page: 160 / 283

Troubleshooting by Indication on the Remote Controller
148 Troubleshooting
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Provide 220~240V power
supply.
YES
NO
Is power supply
220~240V provided?
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 (or X29A) of
the indoor unit PC board is 220 ~ 240
VAC (50 Hz) / 220 VAC
(60 Hz) when turned on
again (within 30
seconds of
turning on
again).
The connector
is connected to X9A (or X15A) of
the indoor unit PC
board.
The limit switch
functions normally.
The connecting
cable is short-circuited
or disconnected.
Replace swing motor.
(V2780)
Urban Multi ML5 · Mini UM · Heat Pump