U2-00 - Outdoor Unit: Defect Of Power Supply Voltage - Daikin Sensira RXQ25AMV1B Service Manual

2.5.26 U2-00 – Outdoor unit: Defect of power supply voltage
RXQ25+35AMV1B + ARXQ25+35AMV1B + FTXQ25+35AMV1B +
ATXQ25+35AMV1B
Split Sensira R32 BBOP
ESIE21-16 – 2022.02
Possible cause: Faulty expansion valve.
8 Check for leaks in the refrigerant circuit. Look for oil traces on the unit(s).
Check the brazing points on the field piping. Perform a pressure test, see
"4.2 Refrigerant circuit" [
Possible cause: Leak in the refrigerant circuit.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
Power supply abnormality
or instant power failure is
detected.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Check if the power supply is compliant with the regulations. See
4
circuit" [ 118].
Possible cause:
▪ Faulty or disturbance of the power supply (power supply MUST be within
range of nominal operating voltage ±4%),
▪ Power drop,
▪ Short circuit.
2 Perform a check of the compressor. See "3.2 Compressor" [
Possible cause: Faulty compressor or miswiring of the compressor power
supply cable.
3 Perform a check of the outdoor unit fan motor. See
4
motor" [ 90].
Possible cause: Faulty outdoor unit fan motor.
4 Perform a check of the main PCB. See
Possible cause: Faulty main PCB.
5 Wait until the compressor restarts.
Possible cause:
▪ Momentary drop of voltage,
▪ Momentary power failure.
6 Perform a check of the indoor unit main PCB. See
4
PCB" [ 74].
Possible cause: Faulty indoor unit main PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
4
120].
Effect
Unit will stop operating.
"3.8 Main
2 Troubleshooting
|
Reset
Power reset via outdoor
unit.
"4.1 Electrical
4
50].
"3.9 Outdoor unit fan
4
PCB" [ 81].
"3.6 Indoor unit main
Service manual
33