2 | Troubleshooting
Service manual
26
RXM20~71R + ARXM25~71R + FTXM20~71R + ATXM25~50R +
FVXM25~50A
Split New Perfera R32
ESIE20-11 – 2021.01
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 "3.12î™…Main PCB"î™…[4î™…123].
Possible cause: Faulty main PCB.
2 Perform a check of the outdoor unit fan motor. See "3.13î™… Outdoor unit fan
motor"î™…[4î™…140].
Possible cause: Faulty outdoor unit fan motor.
3 Check if the power supply is conform with the regulations. See "4.1î™…Electrical
circuit"î™…[4î™…202].
Possible cause:
â–ª Faulty or disturbance of the power supply (imbalance >4%),
â–ª Power drop,
â–ª Short circuit.
4 Clean the outdoor heat exchanger. See "5î™…Maintenance"î™…[4î™…214].
Possible cause: Dirty outdoor heat exchanger.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
2.5.26 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 "3.13î™… Outdoor unit fan
motor"î™…[4î™…140].
Possible cause: Faulty outdoor unit fan motor.
2 Check if the power supply is conform with the regulations. See "4.1î™…Electrical
circuit"î™…[4î™…202].
Possible cause:
â–ª Faulty or disturbance of the power supply (imbalance >4%),
â–ª Power drop,
â–ª Short circuit.
3 Perform a check of the main PCB. See "3.12î™…Main PCB"î™…[4î™…123].
Possible cause: Faulty main PCB.
Prerequisite: Stop the unit operation via the user interface.
4 Turn OFF the respective circuit breaker.