Daikin Split Comfora R32, Service Manual

Page: 15 / 164

1 | Troubleshooting
Service manual
15
ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01C – 2020.07
Possible cause: Outdoor temperature is out of operation range.
2 Perform a check of the compressor. See "2.2 Compressor" [
4
44].
Possible cause: Faulty compressor or miswiring of the compressor power
supply cable.
3 Perform a check of the inverter PCB. See "2.7 Inverter PCB" [
4
73].
Possible cause: Faulty inverter PCB.
4 Check if the power supply is conform with the regulations. See "3.1 Electrical
circuit" [
4
121].
Possible cause:
▪
Faulty or disturbance of the power supply (imbalance >10%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
1.5.12 EA-00 – Cooling/Heating switch abnormality
Trigger Effect Reset
Room thermistor is NOT
functioning within
operation range. Unit will NOT stop
operating. Automatic reset after a
continuous operation for
some time.
If the error occurs too
soon: 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 4‑way valve. See "2.1 4-way valve" [
4
38].
Possible cause: Faulty 4‑way valve.
2 Perform a check of the main PCB. See "2.8 Main PCB" [
4
75].
Possible cause: Faulty main PCB.
3 Perform a check of the room thermistor. See "2.14 Thermistors" [
4
110].
Possible cause: Faulty room thermistor.
4 Perform a check of the indoor unit main PCB. See "2.6 Indoor unit main
PCB" [
4
68].
Possible cause: Faulty indoor unit main PCB.
5 Check that all stop valves of the refrigerant circuit are open. See
"3.2 Refrigerant circuit" [
4
123].
Possible cause: Closed stop valve in the refrigerant circuit.
6 Check if the refrigerant circuit is clogged. See "3.2 Refrigerant circuit" [
4
123].
Possible cause: Clogged refrigerant circuit.