Daikin FTXS20K2V1B Service Manual page 104

Troubleshooting
Troubleshooting In case of "H9" "J3" "J6"
Check No.01
Refer to P.101
J3 error: the discharge
pipe temperature is
lower than the heat
exchanger temperature.
H9 : Outdoor temperature thermistor
J3 : Discharge pipe thermistor
J6 : Outdoor heat exchanger thermistor
94
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn on the power again.
Error displayed
again on remote
controller?
YES
Check No. 01
Check the thermistor resistance
value.
Normal?
YES
Cooling: Outdoor heat
exchanger
temperature
Heating: Indoor heat
exchanger
temperature
Check No. 01
Check the indoor heat exchanger
thermistor resistance value in the
heating operation.
Indoor heat
exchanger thermistor
functioning?
YES
NO
NO
NO
SiBE041134
Reconnect the connectors
or thermistors.
Replace the defective
thermistor(s) of the following
thermistors.
∗ Outdoor temperature
thermistor
∗ Discharge pipe thermistor
∗ Outdoor heat exchanger
thermistor
Replace the indoor heat
exchanger thermistor.
Replace the outdoor unit
PCB.
(R16059)
Service Diagnosis