H9-00" - Outdoor Air Temperature Thermistor Abnormality; J3-00" - Discharge Pipe Thermistor Abnormality; J6-00" - Outdoor Heat Exchanger Thermistor Abnormality - Daikin FTXJ-M Service Manual

ESIE16-02K | Part 2. Troubleshooting
Possible cause
Faulty power module.
Input current or compressor current too
low.
Faulty outdoor inverter PCB.
Faulty compressor.
Faulty reactor.
2.2.2.14. "H9-00" – Outdoor air temperature thermistor abnormality
Trigger
Thermistor input voltage is > 4.96 V or
< 0.04 V when power is on.
Possible cause
Faulty outdoor air temperature thermistor.
Faulty outdoor unit main PCB.
2.2.2.15. "J3-00" – Discharge pipe thermistor abnormality
Trigger
Thermistor input voltage is > 4.96 V or
< 0.04 V when power is on.
Discharge pipe temperature is lower than
the heat exchanger temperature.
Possible cause
Faulty discharge pipe thermistor.
Faulty outdoor unit main PCB.
2.2.2.16. "J6-00" – Outdoor heat exchanger thermistor abnormality
Trigger
Thermistor input voltage is > 4.96 V or
< 0.04 V when power is on.
31/05/21 | Version 1.1
RA R32 Split & multi split M-Series
Check
Check outdoor inverter PCB.
Check if the HAP LED is blinking in regu-
lar intervals.
Check if the correct spare part is installed.
Check compressor.
Check connections and wiring of the com-
pressor.
Check expansion valve (liquid back
issue).
Check the refrigerant charge. Refer to the
nameplate for correct charge.
Check reactor.
Effect
Unit will stop operating.
Check
Check outdoor temperature thermistor.
Check if the HAP LED is blinking in regu-
lar intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives
power.
Effect
Unit will stop operating.
Check
Check discharge pipe thermistor.
Check if the HAP LED is blinking in regu-
lar intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives
power.
Effect
Unit will stop operating.
2.2. Error based troubleshooting
Corrective action
Restore the power to the outdoor inverter
PCB.
Replace the outdoor inverter PCB when
required.
Replace compressor when required.
Investigate reason of breakdown.
Replace expansion valve when required.
Fix possible leak.
Replace reactor when required.
Reset
Manual reset via user interface.
Corrective action
Replace outdoor temperature thermistor
when required.
Restore the power to the outdoor main
PCB.
Replace outdoor main PCB when HAP
LED is not blinking in regular intervals.
Reset
Manual reset via user interface.
Corrective action
Replace discharge pipe thermistor when
required.
Restore the power to the outdoor main
PCB.
Replace outdoor main PCB when HAP
LED is not blinking in regular intervals.
Reset
Manual reset via user interface.
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