Daikin Comfora ATXP20~35L2V1B, Service Manual

Page: 44 / 68

3 Third party components
Service manual
44
ATXP20~3 FTXP20~7 ARXP20~3
RXP20~71L2V1B
Split Comfora R32
ESIE18-01 – 2019.02
Is the problem solved? Action
Yes No further actions required.
No Return to the troubleshooting of
the specific error and continue
with the next procedure.
2.13.2 Other thermistors
Checking procedures
To perform a mechanical check of the specific thermistor
Prerequisite: Turn OFF the unit via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see "2.10 Plate
work" on page 35 .
1 Locate the thermistor and remove the insulation if needed.
Check if there is thermal contact between the thermistor and
the piping or ambient.
Is the thermistor correctly
installed (thermal contact
between the thermistor and the
piping or ambient)? Action
Yes Perform an electrical check of the
specific thermistor, see
"Checking procedures" on
page 44
.
No Correctly install the thermistor,
see
"Repair procedures" on
page 44 .
Repair procedures
To remove the room thermistor PCB
Prerequisite: Turn OFF the unit via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see "2.10 Plate
work" on page 35 .
1 Locate the room thermistor PCB on the indoor unit PCB.
2 Disconnect the connector of the room thermistor PCB from the
indoor unit PCB.
3 Press the latches to unlock and remove the room thermistor
PCB from the indoor unit PCB.
4 To install the room thermistor PCB, see "Repair procedures" on
page 43 .
To install the room thermistor PCB
1 Install the room thermistor PCB in the correct location on the
indoor unit PCB.
2 Connect the connector of the room thermistor PCB to the indoor
unit PCB.
Is the problem solved? Action
Yes No further actions required.
No Return to the troubleshooting of
the specific error and continue
with the next procedure.
3 Third party components
3.1 Power supply
3.1.1 Checking procedures
To check if the power supply is conform with the
regulations
1 Check that the power source is in line with the requirements
described in the databook.
Is the power supply conform
with the regulations? Action
Yes Return to the troubleshooting of
the specific error and continue
with the next procedure.
No Adjust the power supply, see
"3.1.2 Repair procedures" on
page 44
.
To check the wiring between the outdoor unit and
the indoor unit
1 Check that all connectors are fully plugged‑in. All colour codes
MUST correspond.
2 Check that no connectors are damaged.
3 Check that the wiring corresponds with the wiring diagram, see
"5.2 Wiring diagram" on page 50 .
Is all wiring between the
outdoor unit and the indoor
unit correct? Action
Yes Return to the troubleshooting of
the specific error and continue
with the next procedure.
No Adjust the wiring where needed,
see
"3.1.2 Repair procedures" on
page 44 .
3.1.2 Repair procedures
To adjust the power supply
1 Make sure that the power source is in line with the requirements
described in the databook.
Is the problem solved? Action
Yes No further actions required.
No Return to the troubleshooting of
the specific error and continue
with the next procedure.
To adjust the wiring between the outdoor unit and
the indoor unit
1 Adjust the wiring according to the wiring diagram and
connection diagram, see
"5.2 Wiring diagram" on page 50 .
2 Check that all connectors are fully plugged‑in. All colour codes
MUST correspond.
3 Check that no connectors are damaged.
Is the problem solved? Action
Yes No further actions required.
No Return to the troubleshooting of
the specific error and continue
with the next procedure.