Daikin Emura 3 Series Service Manual page 32

3 | Troubleshooting
3.5.27 L4-00 – Outdoor unit: Malfunction of inverter radiating fin temperature rise
Service manual
32
draft – 22/04/2022 08:50
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 Main PCB.
Possible cause: Faulty main PCB.
2 Perform a check of the outdoor unit fan motor. See Outdoor unit fan motor.
Possible cause: Faulty outdoor unit fan motor.
3 Check if the power supply is compliant with the regulations. See
4
circuit" [ 60].
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 Outdoor unit fan motor.
Possible cause: Faulty outdoor unit fan motor.
2 Check if the power supply is compliant with the regulations. See
4
circuit" [ 60].
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 Main PCB.
Possible cause: Faulty main PCB.
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Effect
Unit will stop operating.
"5.1 Electrical
4 72].
Reset
Manual reset via user
interface.
"5.1 Electrical
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04 – 2022.04