Daikin Comfora ATXP20~35L2V1B, Service Manual

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1 Troubleshooting
Service manual
12
ATXP20~3 FTXP20~7 ARXP20~3
RXP20~71L2V1B
Split Comfora R32
ESIE18-01 – 2019.02
1.5.28 U2-00 – Main circuit voltage abnormality
Trigger Effect Reset
Power supply
abnormality or instant
power failure is
detected. Unit will stop
operating. Power reset via
outdoor unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
INFORMATION
In case of preferential kWh rate, the indoor unit also needs
a power reset.
1 Check if the power supply is conform with the regulations. See
"3.1 Power supply" on page 44 .
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
2 Perform a check of the compressor. See "2.2 Compressor" on
page 20 .
Possible cause: Faulty compressor.
3 Perform a check of the outdoor unit fan motor. See
"2.9 Outdoor unit fan motor" on page 34 .
Possible cause: Faulty outdoor unit fan motor.
4 Perform a check of the main PCB. See "2.8 Main PCB" on
page 32 .
Possible cause: Faulty main PCB.
5 Perform a check of the indoor unit PCB. See "2.6 Indoor unit
PCB" on page 29 .
Possible cause: Faulty indoor unit PCB.
6 Wait until the compressor restarts.
Possible cause:
▪ Momentary drop of voltage,
▪ Momentary power failure.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.5.29 U4-00 – Indoor/outdoor transmission
abnormality
Trigger Effect Reset
Communication
failure between
outdoor and indoor
unit. Unit will stop
operating. Power reset via
outdoor unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
INFORMATION
In case of preferential kWh rate, the indoor unit also needs
a power reset.
1 Check if the power supply is conform with the regulations. See
"3.1 Power supply" on page 44 .
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
2 Perform a check of the power supply, connections, wiring,…
between the outdoor unit and the indoor unit. See
"3.1 Power
supply" on page 44 .
Possible cause: Faulty wiring between the outdoor unit and
the indoor unit.
3 Perform a check of the main PCB. See "2.8 Main PCB" on
page 32 .
Possible cause: Faulty main PCB.
4 Perform a check of the outdoor unit fan motor. See
"2.9 Outdoor unit fan motor" on page 34 .
Possible cause: Faulty outdoor unit fan motor.
5 Perform a check of the indoor unit PCB. See "2.6 Indoor unit
PCB" on page 29 .
Possible cause: Faulty indoor unit PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.5.30 UA-00 – Indoor/outdoor combination
abnormality
Trigger Effect Reset
Signal transmission
between outdoor and
indoor unit
abnormality. Improper
combination of
outdoor and indoor
unit. Unit will stop
operating. Power reset via
outdoor unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
INFORMATION
In case of preferential kWh rate, the indoor unit also needs
a power reset.
1 Check for improper combination of the indoor unit and the
outdoor unit. See the combination table in the Databook for
more information.
2 Perform a check of the power supply, connections, wiring,…
between the outdoor unit and the indoor unit. See
"3.1 Power
supply" on page 44 .
Possible cause: Faulty wiring between the outdoor unit and
the indoor unit.
3 Perform a check of the main PCB. See "2.8 Main PCB" on
page 32 .
Possible cause: Faulty main PCB.
4 Perform a check of the indoor unit PCB. See "2.6 Indoor unit
PCB" on page 29 .
Possible cause: Faulty indoor unit PCB.