Daikin Super Multi NX B series Service Manual page 207

Troubleshooting
Troubleshooting
Check No.6
Refer to P.210
J3 error if discharge pipe
thermistor temperature is
smaller than condenser
thermistor temperature
P4 : Radiation fin thermistor
J3 : Discharge pipe temperature thermistor
J6 : Outdoor unit heat exchanger temperature thermistor
J8 : Liquid pipe thermistor
J9 : Gas pipe thermistor
H9 : Outdoor temperature thermistor
196
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
Cooling: Outdoor unit heat
exchanger thermistor
Heating: Indoor unit heat
exchanger thermistor
Check No. 6
Check the indoor unit heat
exchanger thermistor resistance
value in the heating mode.
Indoor unit
heat exchanger thermistor
functioning?
YES
NO
YES
NO
NO
Si12-308
Reconnect.
Reconnect.
Replace defective one(s) of
the following thermistors.
l
Radiation fin thermistor
l
Discharge pipe
temperature thermistor
l
Outdoor unit heat
exchanger temperature
thermistor
l
Liquid pipe thermistor
l
Gas pipe thermistor
l
Outdoor temperature
thermistor
Replace the following
thermistor.
l
Indoor unit heat
exchanger thermistor
Replace the outdoor unit
PC board. (Replace the
indoor unit PC board.)
(Q0357)
Service Diagnosis