Daikin FTXM-V Series Service Manual page 131

SiUS042113E
Troubleshooting
In case of H9, J3, J6, J8
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
J8 : Liquid pipe thermistor
Reference
Check No.01 Refer to P.134
Part 6 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
controller?
YES
Check No. 01
Check the thermistor resistance
value.
Normal?
YES
Cooling: Outdoor heat
exchanger
thermistor
Heating: Indoor heat
exchanger
thermistor
Check No. 01
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
thermistor(s).
Outdoor temperature
thermistor
Discharge pipe thermistor
Outdoor heat exchanger
thermistor
Liquid pipe thermistor
Replace the indoor heat
exchanger thermistor.
Replace the outdoor unit
PCB (main PCB).
R6000772
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