Daikin FT25CV1A Service Manual page 117

Troubleshooting
Troubleshooting
Check No.6
Refer to P.116
P4 :
J6 :
H9 :
106
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Turn on the power again.
Error displayed again
on remote controller?
YES
Connector or thermistor
disconnected?
NO
Check No. 6
Check the thermistor resistance
value.
Normal?
YES
Check No. 6
Check the indoor heat exchanger
thermistor resistance value in the
heating mode.
Indoor
heat exchanger thermistor
functioning?
YES
Radiation fin thermistor
Outdoor heat exchanger thermistor
Outdoor air thermistor
NO
YES
NO
NO
Si01-406
Reconnect.
Reconnect.
Replace defective one(s) of
the following thermistors.
l
Radiation fin thermistor
l
Outdoor heat exchanger
thermistor
l
Outdoor air thermistor
Replace the following
thermistor.
l
Indoor heat exchanger
thermistor
Replace the outdoor unit
PCB. (Replace the indoor
unit PCB.)
(R3074)
Service Diagnosis