A6-00 - Indoor Unit Fan Motor Abnormality; C4-00 - Indoor Heat Exchanger Thermistor Abnormality; C9-00 - Room Thermistor Abnormality; E1-00 - Pcb Defect - Daikin Comfora FTXP20~71L2V1B Service Manual

3 Clean the indoor unit heat exchanger. See
page 48.
Possible cause: Dirty indoor unit heat exchanger.
4 Perform a check of the indoor unit heat exchanger thermistor.
See "2.13 Thermistors" on page 41.
Possible cause: Faulty
thermistor.
5 Perform a check of the indoor unit PCB. See
PCB" on page 29.
Possible cause: Faulty indoor unit PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.5.3 A6-00 – Indoor unit fan motor abnormality
Trigger Effect
The rotation speed of Unit will stop
the fan motor is NOT operating.
detected while the
output voltage to the
fan is at its maximum.
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 PCB. See
PCB" on page 29.
Possible cause: Faulty indoor unit PCB.
2 Perform a check of the indoor unit fan motor. See
unit fan motor" on page 27.
Possible cause: Faulty indoor unit fan motor.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.5.4 C4-00 – Indoor heat exchanger thermistor
abnormality
Trigger Effect
Refrigerant liquid Unit will stop
thermistor detects an operating.
open or short circuit
during compressor
operation.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
INFORMATION
In case of preferential kWh rate, the indoor unit also needs
a power reset.
1 Perform a check of the refrigerant liquid thermistor. See
"2.13 Thermistors" on page 41.
Possible cause: Faulty refrigerant liquid thermistor.
2 Perform a check of the indoor unit PCB. See
PCB" on page 29.
ATXP20~35L2V1B + FTXP20~71L2V1B + ARXP20~35L2V1B +
RXP20~71L2V1B
Split Comfora R32
ESIE18-01 – 2019.02
"4 Maintenance" on
indoor unit heat exchanger
"2.6 Indoor unit
Reset
Power reset via the
outdoor unit.
"2.6 Indoor unit
"2.5 Indoor
Reset
Power reset via
outdoor unit.
"2.6 Indoor unit
Possible cause: Faulty indoor unit PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.5.5 C9-00 – Room thermistor abnormality
Trigger Effect
Resistance value is Unit will stop
out of range. operating.
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
"2.13 Thermistors" on page 41.
Possible cause: Faulty room thermistor.
2 Perform a check of the indoor unit PCB. See
PCB" on page 29.
Possible cause: Faulty indoor unit PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.5.6 E1-00 – PCB defect
Trigger Effect
Main PCB detects Unit will stop
that EEPROM is operating.
abnormal.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
INFORMATION
In case of preferential kWh rate, the indoor unit also needs
a power reset.
1 Perform a check of the main PCB. See
page 32.
Possible cause: Faulty main PCB.
2 Check if the power supply is conform with the regulations. See
"3.1 Power supply" on page 44.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
3 Perform a check of the outdoor unit fan motor. See
"2.9 Outdoor unit fan motor" on
Possible cause: Faulty outdoor unit fan motor.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1 Troubleshooting
Reset
Automatic reset when
resistance is within
range.
the room thermistor. See
"2.6 Indoor unit
Reset
Manual reset via user
interface.
Power reset via
outdoor unit.
"2.8 Main PCB" on
page 34.
Service manual
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