C9-00 - Room Thermistor Abnormality; E1-00 - Outdoor Unit: Pcb Defect - Daikin FTXP20-71L Service Manual

2 | Troubleshooting
2.5.5 C9-00 – Room thermistor abnormality
2.5.6 E1-00 – Outdoor unit: PCB defect
Service manual
18
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
"3.13 Thermistors" [
Possible cause: Faulty indoor unit air (room) thermistor.
2 Perform a check of the indoor unit main PCB. See
4
PCB" [ 78].
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
Main PCB detects that
EEPROM is abnormal.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Perform a check of the main PCB. See
Possible cause: Faulty main PCB.
2 Check if the power supply is compliant with the regulations. See
4
circuit" [ 142].
Possible cause:
▪ Faulty or disturbance of the power supply (power supply MUST be within
range of nominal operating voltage ±4%),
▪ Power drop,
▪ Short circuit.
3 Perform a check of the outdoor unit fan motor. See
4
motor" [ 100].
Possible cause: Faulty outdoor unit fan motor.
4 Perform a check of the compressor. See "3.2 Compressor" [
Effect
Unit will stop operating.
4
129].
Effect
Unit will stop operating.
"3.7 Main
Reset
Automatic reset when
resistance is within range.
"3.6 Indoor unit main
Reset
Manual reset via user
interface.
Power reset.
PCB" [ 4 84].
"4.1 Electrical
"3.8 Outdoor unit fan
4
52].
ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01E – 2023.01