L4-00 - Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise - Daikin RXM20R Service Manual

3 | Troubleshooting
3.5.26 L4-00 – Outdoor unit: Malfunction of inverter radiating fin temperature rise
Service manual
34
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
Possible cause: Faulty main PCB.
2 Perform a check of the outdoor unit fan motor. See
4
motor" [ 143].
Possible cause: Faulty outdoor unit fan motor.
3 Check if the power supply is compliant with the regulations. See
4
circuit" [ 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" [
Possible cause: Dirty outdoor heat exchanger.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
Radiating fin thermistor
measures a too high
temperature.
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
motor" [ 143].
Possible cause: Faulty outdoor unit fan motor.
2 Check if the power supply is compliant with the regulations. See
4
circuit" [ 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
Possible cause: Faulty main PCB.
"4.12 Main
Effect
Unit will stop operating.
"4.12 Main
RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R +
4
PCB" [ 125].
"4.13 Outdoor unit fan
"5.1 Electrical
4
217].
Reset
Manual reset via user
interface.
"4.13 Outdoor unit fan
"5.1 Electrical
4
PCB" [ 125].
FVXM25~50A
Split New Perfera R32
ESIE20-11B – 2022.02