Daikin R71FUV1 Service Manual page 230

Troubleshooting by Remote Controller
Troubleshooting
Caution
Check the mounting
condition of the outdoor
air thermistor, heat
exchanger deicer
thermistor and liquid
pipe thermistor in the
piping.
Are
the above
thermistor installed
on pipes
correctly?
Remove the outdoor air
thermistor, heat
exchanger deicer
thermistor and the liquid
pipe thermistor from the
outdoor unit PCB and
measure resistance with
a tester.
Is the
characteristic of
the above thermistor
normal?
CHECK 3
CHECK 3
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
YES
NO
YES
Refer to P.460.
Si20-701_B
Install the
thermistor
correctly.
Replace the
thermistor.
Rectify the
refrigerant
overcharge.
223