Daikin FTXN25KEV1B Service Manual page 86

Troubleshooting
In case of " H9 " " J3 " " J6 "
Troubleshooting
Check No.01
Refer to P.87
J3 error: the discharge
pipe temperature is
lower than the heat
exchanger temperature.
H9
J3
J6
76
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
: Outdoor temperature thermistor
: Discharge pipe thermistor
: Outdoor heat exchanger thermistor
NO
NO
NO
SiBE041102_A
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.
(R14443)
Service Diagnosis