Daikin AT12BV1LS Pocket Manual page 99

Troubleshooting
Trouble
shooting
Check No.6
Refer to
P.157
98
Be sure to turn off power switch before connect or
Caution disconnect connector, 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 unit heat
exchanger thermistor
resistance value in the
heating mode.
Indoor unit
heat exchanger thermistor
functioning?
YES
P4 : Radiation fin thermistor
J3 : Discharge pipe temperature thermistor
J6 : Outdoor unit heat exchanger temperature thermistor
J8 : Liquid pipe temperature thermistor
J9 : Gas pipe temperature thermistor
H9 : Outdoor air temperature thermistor
NO
Reconnect.
YES
Reconnect.
NO
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
NO
thermistor.
l
Indoor unit heat
exchanger
thermistor
Replace the outdoor
unit PCB. (Replace
the indoor unit PCB.)
Service Diagnosis
Si10-417
(R3043)