C9-00 - Room Thermistor Abnormality; Humidity Sensor Abnormality - Daikin FTXA20A Service Manual

1.5.6 C9-00 – Room thermistor abnormality
1.5.7 CC-00 – Humidity sensor abnormality
FTXA20~50A(W)(S)(T) + FTXA20~50B(B)(S)(T) + RXA42+50A +
RXA20~35A(9) + RXA42+50B
Split Stylish R32
ESIE18-03D – 2021.05
1 Perform a check of the indoor unit heat exchanger thermistor. See
"2.19 Thermistors" [
Possible cause: Faulty indoor unit heat exchanger thermistor.
2 Perform a check of the indoor unit main PCB. See
4
PCB" [ 75].
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
Resistance value is out of
range. Temperature
measured <–43.6°C or
>90°C.
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 air (room) thermistor. See
"2.19 Thermistors" [
Possible cause: Faulty indoor unit air (room) thermistor.
2 Perform a check of the indoor unit main PCB. See
4
PCB" [ 75].
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.
4
144].
Effect
Unit will stop operating.
4
144].
Effect
Unit will stop operating.
1 Troubleshooting
|
"2.8 Indoor unit main
Reset
Automatic reset when
resistance is within range.
"2.8 Indoor unit main
Reset
Manual reset via user
interface.
4
"2.6 Humidity sensor" [ 70].
Service manual
11