C5-02 - Middle Heat Exchanger Thermistor Short Circuit; C5-03 - Middle Heat Exchanger Thermistor Open Circuit - Daikin Sky Air FAA71BUV1B Service Manual

3.3.9 C5-02 – Middle heat exchanger thermistor short circuit
3.3.10 C5-03 – Middle heat exchanger thermistor open circuit
FAA71+100BUV1B
Sky Air indoor units
ESIE22-01 – 2022.02
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
Indoor unit middle heat
exchanger thermistor
detected short‑circuit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Perform a check of the indoor unit middle heat exchanger thermistor. See
"4.9 Thermistors" [
Possible cause: Faulty middle heat exchanger thermistor or connector fault.
2 Perform a check of the indoor unit main PCB. See
4
PCB" [ 53].
Possible cause: Faulty indoor unit main PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
Indoor unit middle heat
exchanger thermistor
detected open circuit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Check that the connector of the indoor unit middle heat exchanger thermistor
is correctly connected to the main PCB. See
Possible cause: Open circuit on connector of indoor unit middle heat
exchanger thermistor.
2 Perform a check of the indoor unit middle heat exchanger thermistor. See
"4.9 Thermistors" [
Possible cause: Faulty middle heat exchanger thermistor or connector fault.
3 Perform a check of the indoor unit main PCB. See
4
PCB" [ 53].
Possible cause: Faulty indoor unit main PCB.
Effect
The unit stops and will
resume operation in
thermostat OFF.
4
77].
Effect
The unit stops and will
resume operation in
thermostat OFF.
4
77].
3 Troubleshooting
|
Reset
Auto reset.
"4.5 Indoor unit main
Reset
Auto reset.
4
"7.2 Wiring diagram" [
"4.5 Indoor unit main
93].
Service manual
29