Daikin FTXA25AW - 1.6 Symptom Based Troubleshooting; 1.6.1 Operation Does Not Start

1 | Troubleshooting
Service manual
11
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"[4144].
Possible cause: Faulty indoor unit heat exchanger thermistor.
2 Perform a check of the indoor unit main PCB. See "2.8 Indoor unit main
PCB"[4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.
1.5.6 C9-00 – Room thermistor abnormality
Trigger Effect Reset
Resistance value is out of
range. Temperature
measured <–43.6°C or
>90°C.
Unit will stop operating. Automatic reset when
resistance is within range.
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"[4144].
Possible cause: Faulty indoor unit air (room) thermistor.
2 Perform a check of the indoor unit main PCB. See "2.8 Indoor unit main
PCB"[4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.
1.5.7 CC-00 – Humidity sensor abnormality
Trigger Effect Reset
▪ Disconnected sensor
▪ Broken sensor
▪ Communication error
Unit will stop operating. Manual reset via user
interface.
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 "2.6Humidity sensor"[470].
Possible cause: Faulty humidity sensor.