1 | Troubleshooting
Service manual
23
FTXF20~71A + FTXF20~25B + FTXF20~42C + ATXF20~71A + ATXF20~42C
+ RXF20~71A + RXF20~60B + RXF20~42C + ARXF20~71A + ARXF20~42C
Split Sensira R32
ESIE18-12E – 2021.02
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 "2.8Main PCB"[474].
Possible cause: Faulty main PCB.
2 Perform a check of the outdoor unit fan motor. See "2.9 Outdoor unit fan
motor"[492].
Possible cause: Faulty outdoor unit fan motor.
3 Check if the power supply is conform with the regulations. See "3.1Electrical
circuit"[4127].
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance >4%),
▪ Power drop,
▪ Short circuit.
4 Clean the outdoor heat exchanger. See "4Maintenance"[4138].
Possible cause: Dirty outdoor heat exchanger.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
1.5.24 L4-00 – Outdoor unit: Malfunction of inverter radiating fin temperature rise
Trigger Effect Reset
Radiating fin thermistor
measures a too high
temperature.
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"[492].
Possible cause: Faulty outdoor unit fan motor.
2 Check if the power supply is conform with the regulations. See "3.1Electrical
circuit"[4127].
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance >4%),
▪ Power drop,
▪ Short circuit.
3 Perform a check of the main PCB. See "2.8Main PCB"[474].
Possible cause: Faulty main PCB.
Prerequisite: Stop the unit operation via the user interface.
4 Turn OFF the respective circuit breaker.
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