Daikin Perfera RXM20R, Service Manual

Page: 34 / 260

3 | Troubleshooting
Service manual
34
RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R +
FVXM25~50A
Split New Perfera R32
ESIE20-11B – 2022.02
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 "4.12 Main PCB" [
4
125].
Possible cause: Faulty main PCB.
2 Perform a check of the outdoor unit fan motor. See "4.13 Outdoor unit fan
motor" [
4
143].
Possible cause: Faulty outdoor unit fan motor.
3 Check if the power supply is compliant with the regulations. See "5.1 Electrical
circuit" [
4
205].
Possible cause:
▪
Faulty or disturbance of the power supply (power supply MUST be within
range of nominal operating voltage ±4%),
▪ Power drop,
▪ Short circuit.
4 Clean the outdoor heat exchanger. See "6 Maintenance" [
4
217].
Possible cause: Dirty outdoor heat exchanger.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
3.5.26 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 "4.13 Outdoor unit fan
motor" [
4
143].
Possible cause: Faulty outdoor unit fan motor.
2 Check if the power supply is compliant with the regulations. See "5.1 Electrical
circuit" [
4
205].
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 main PCB. See "4.12 Main PCB" [
4
125].
Possible cause: Faulty main PCB.