Daikin D Series Service Manual page 167

Troubleshooting
Troubleshooting
Check No.06
Refer to P.173
P4
J3
J6
J8
J9
H9
158
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. 06
Check the thermistor resistance
value.
Normal?
YES
Check No. 06
Check the indoor unit heat
exchanger thermistor resistance
value in the heating mode.
Indoor unit
heat exchanger thermistor
functioning?
YES
: Radiation fin thermistor
: Discharge pipe thermistor
: Outdoor unit heat exchanger thermistor
: Liquid pipe thermistor
: Gas pipe thermistor
: Outdoor temperature thermistor
NO
YES
NO
NO
SiBE12-519
Reconnect.
Reconnect.
Replace defective one(s) of
the following thermistors.
Radiation fin thermistor
Discharge pipe
thermistor
Outdoor unit heat
exchanger thermistor
Liquid pipe thermistor
Gas pipe thermistor
Outdoor temperature
thermistor
Replace the following
thermistor.
Indoor unit heat
exchanger thermistor
Replace the outdoor unit
PCB. (Replace the indoor
unit PCB.)
(R4689)
Service Diagnosis