Service manual

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(V2797)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Are the
above thermistor
installed on pipes
correctly?
Check the mounting condition of
the temperature sensors of the
outside air thermistor, heat
exchanging deicer thermistor and
liquid pipe thermistor in the piping.
Remove the outside air thermistor,
heat exchanging deicer thermister
and the liquid pipe thermistor from
the outdoor PC board and measure
resistance with a tester.
Is the
characteristic of
the above thermistor
normal?
Refrigerant overcharged.
YES
NO
NO
Replace thermistor.
Install thermistor correctly.
YES