Panasonic WH-ADF0309J3E5CM Service Manual page 268

Troubleshooting (Room air Conditioning unit)
When abnormality indication starts again
Check the indoor unit intake air filter
Is the air filter dirty?
Check the dust accumulation on the indoor unit heat exchanger
Is the indoor unit heat exchanger dirty?
Check refrigerant amount.
Is the additional refrigerant
amount filled correctly?
NO
NO
NO
YES
Caution
YES
● Clean the air filter
YES
● Clean the indoor unit heat exchanger
Reclaim and recharge with
correct amount of
refrigerant.
- Replace the outdoor
unit PCB (main).
- Replace the outdoor high
pressure sensor.
268
For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.