Daikin FTXL20G2V1B Service Manual page 120

SiENBE04-925_A
Troubleshooting
In case of "H9" "J3" "J6"
Check No.06
Refer to P.120
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
Service Diagnosis
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 control?
YES
Check No. 06
Check the thermistor resistance
value.
Normal?
YES
Cooling: Outdoor heat
exchanger
temperature
Heating: Indoor heat
exchanger
temperature
Check No. 06
Check the indoor heat exchanger
thermistor resistance value in the
heating operation.
Indoor heat
exchanger thermistor
functioning?
YES
NO
NO
NO
Troubleshooting
Reconnect the connectors
or thermistors.
Replace the defective
one(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.
(Replace the indoor unit
PCB.)
(R11905)
105