C9-03 - Suction Air Thermistor Open Circuit; Humidity Sensor Abnormality - Daikin Sky Air FAA71BUV1B Service Manual

3.3.13 C9-03 – Suction air thermistor open circuit
3.3.14 CC-00 – Humidity sensor abnormality
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 suction air
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 suction air thermistor is correctly
connected to the main PCB. See
Possible cause: Open circuit on connector of indoor unit suction air
thermistor.
2 Perform a check of the indoor unit suction air thermistor. See
4
"4.9 Thermistors" [
Possible cause: Faulty indoor unit suction air thermistor.
3 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
▪ Disconnected sensor
▪ Broken sensor
▪ Communication error
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Perform a check of the humidity sensor. See
Possible cause: Faulty humidity sensor.
Effect
The unit stops and will
resume operation in
thermostat OFF.
"7.2 Wiring
77].
Effect
Unit will stop operating.
3 Troubleshooting
|
Reset
Auto reset.
diagram" [ 4 93].
"4.5 Indoor unit main
Reset
Manual reset via user
interface.
4
"4.3 Humidity sensor" [ 49].
Service manual
31