Panasonic CS-PS9JKT

64
14.4.21 F97 (Compressor Overheating)
Malfunction Decision Conditions
During operation of cooling and heating, when compressor tank temperature data (112°C) is detected by the
compressor tank temperature sensor.
Malfunction Caused
• Refrigerant shortage (refrigerant leakage).
• 2/3 way valve closed.
• Detection error due to faulty compressor tank temperature sensor.
Troubleshooting
2/3 way valve closed?
When F97 indication ha
pp
ens
For safety reason and to prevent component
breakdown, always switch off the power
before remove and connect the component.
Check the compressor tank temperature
sensor.
•
Open the 2/3 way valve.
YES
NO
Does it conform to the sensor
characteristic chart?
• Replace the compressor tank
te
m
pe
r
atu
r
e
se
n
so
r.
NO
YES
Check for gas leakage.
Is Oil oozing out from the 2/3 way valve?
• Repair the pipe flare or union nuts.
Reclaim and recharge refrigerant.
•
Replace the capillary tube or dryer.
Capillary tube or dryer clogged?
YES
NO
YES
Charge a specified amount of fresh
refrigerant.
Refrigerant cycle abnormality error
happens again?
NO
NO
YES
• Replace outdoor unit PCB
•
Replace outdoor unit compressor
•
Procedure complete