Daikin Comfora FTXP20~71L2V1B - E7-00 - Fan lock abnormality

1 Troubleshooting
Service manual
7
ATXP20~35L2V1B + FTXP20~71L2V1B + ARXP20~35L2V1B +
RXP20~71L2V1B
Split Comfora R32
ESIE18-01 – 2019.02
6 Perform a check of the 4‑way valve. See "2.1 4-way valve"on
page18.
Possible cause: Faulty 4‑way valve.
7 Perform a check of the expansion valve. See "2.3 Expansion
valve"on page23.
Possible cause: Faulty expansion valve.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.5.10 E7-00 – Fan lock abnormality
Trigger Effect Reset
Fan does NOT start
15~30seconds after
ON signal.
It can occur that the
error code is
triggered when the
fan motor is running
caused by a faulty
rotating sensor
signal.
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 outdoor unit fan motor. See
"2.9Outdoor unit fan motor"on page34.
Possible cause: Faulty outdoor unit fan motor.
2 Perform a check of the inverter PCB. See "2.7Inverter PCB"on
page31.
Possible cause: Faulty power module = inverter PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.5.11 E8-00 – Input overvoltage abnormality
Trigger Effect Reset
Compressor running
current exceeds
standard value for
2.5seconds.
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 Check the outdoor temperature. See "3.3 External factors" on
page47.
Possible cause: Outdoor temperature is out of operation
range.
2 Perform a check of the compressor. See "2.2Compressor"on
page20.
Possible cause: Faulty compressor.
3 Perform a check of the inverter PCB. See "2.7Inverter PCB"on
page31.
Possible cause: Faulty power module = inverter PCB.
4 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.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.5.12 EA-00 – Cooling/Heating switch
abnormality
Trigger Effect Reset
Room thermistor is
NOT functioning
within operation
range.
Unit will NOT stop
operating.
Automatic reset after
a continuous
operation of
10minutes.
If the error occurs too
soon: 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 4‑way valve. See "2.1 4-way valve"on
page18.
Possible cause: Faulty 4‑way valve.
2 Perform a check of the main PCB. See "2.8 Main PCB" on
page32.
Possible cause: Faulty main PCB.
3 Perform a check of the room thermistor. See
"2.13Thermistors"on page41.
Possible cause: Faulty room thermistor.
4 Perform a check of the refrigerant circuit. See "3.2 Refrigerant
circuit"on page45.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.5.13 F3-00 – Discharge pipe temperature stop
abnormality
Trigger Effect Reset
Discharge pipe
thermistor detects a
too high temperature.
Unit will NOT stop
operating.
Automatic reset when
temperature drops
normal level.
If the error re-occurs
too soon: unit will
stop operating.
Manual reset via user
interface.