Daikin Stylish Series - P4-00 - Outdoor Unit: Malfunction of Radiating Fin Temperature Sensor

1 | Troubleshooting
Service manual
26
(C)(F)TXA15~50A(W)(S)(T) + (C)(F)TXA15~50B(B)(S)(T) + RXA42+50A +
RXA20~35A + RXA42+50B
Split Stylish R32
ESIE18-03C – 2020.02
Possible cause: Closed stop valve in the refrigerant circuit.
2 Check if the refrigerant circuit is clogged. See "3.2Refrigerant circuit"[4133].
Possible cause: Clogged refrigerant circuit.
3 Check if the refrigerant circuit is correctly charged. See "3.2 Refrigerant
circuit"[4133].
Possible cause: Refrigerant overcharge or shortage.
4 Check for the presence of non‑condensables and/or humidity in the
refrigerant circuit. See "3.2Refrigerant circuit"[4133].
Possible cause: Non‑condensables and/or humidity in the refrigerant circuit.
5 Perform a check of the inverter PCB. See "2.10Inverter PCB"[479].
Possible cause: Faulty inverter PCB.
6 Perform a check of the compressor. See "2.2Compressor"[445].
Possible cause: Faulty compressor.
7 Check if the power supply is conform with the regulations. See "3.1Electrical
circuit"[4131].
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.
1.5.29 P4-00 – Outdoor unit: Malfunction of radiating fin temperature sensor
Trigger Effect Reset
Radiating fin thermistor
input is out of range.
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 radiation fin thermistor. See
"2.18Thermistors"[4119].
Possible cause: Faulty radiation fin thermistor.
2 Perform a check of the main PCB. See "2.11Main PCB"[481].
Possible cause: Faulty main PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.