Daikin Perfera ARXM25A Service Manual page 34

3 | Troubleshooting
Service manual
34
draft – 21/12/2023 13:09
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Check that all stop valves of the refrigerant circuit are open. See
"4.2 Refrigerant circuit" [
Possible cause: Closed stop valve in the refrigerant circuit.
2 Check if the refrigerant circuit is clogged. See
Possible cause: Clogged refrigerant circuit.
3 Check if the refrigerant circuit is correctly charged. See
4
circuit" [ 53].
Possible cause: Refrigerant overcharge or shortage.
4 Check for the presence of non‑condensables and/or humidity in the
refrigerant circuit. See
Possible cause: Non‑condensables and/or humidity in the refrigerant circuit.
5 Perform a check of the main PCB. See Main PCB.
Possible cause: Faulty main PCB.
6 Perform a check of the compressor. See Compressor.
Possible cause: Faulty compressor or miswiring of the compressor power
supply cable.
7 Check if the power supply is compliant with the regulations. See
4
circuit" [ 51].
Possible cause:
▪ Faulty or disturbance of the power supply (power supply MUST be within
range of nominal operating voltage ±4%),
▪ Power drop,
▪ Short circuit.
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
8 Wait until the rectifier voltage is below 10 V DC.
DANGER: RISK OF ELECTROCUTION
Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure
the rectifier voltage is below 10 V DC before proceeding.
9 Check that the thermal interface grease is applied properly on the (PCB or
refrigerant piping) contact surface of the heat sink. Adjust if needed.
Possible cause: Thermal interface grease NOT applied properly on the heat
sink.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
4
53].
"4.2 Refrigerant
4
"4.2 Refrigerant circuit" [
RXM20~50A + ARXM25~50A + FTXM20~50A + ATXM20~50A + CTXM15A
4
circuit" [ 53].
"4.2 Refrigerant
53].
"4.1 Electrical
Split Perfera ZETA R32
ESIE23-06 – 2023.12