Daikin Comfora ATXP20~35L2V1B, Service Manual

Page: 33 / 68

2 Components
Service manual
33
ATXP20~3 FTXP20~7 ARXP20~3
RXP20~71L2V1B
Split Comfora R32
ESIE18-01 – 2019.02
Does the HAP LED blink in
regular intervals (1 second
ON/1 second OFF)? Action
No Remove the main PCB, see
"2.8.2 Repair procedures" on
page 33
.
To check if the correct spare part is installed
1 Visit your local spare parts webbank.
2 Enter the model name of your unit and check if the installed
spare part number corresponds with the spare part number
indicated in the webbank.
NOTICE
Also check that the correct spare part is installed for the
capacity adapter.
Is the correct spare part for the
PCB installed? Action
Yes Return to "2.8.1 Checking
procedures" on page 32 of the
main PCB and continue with the
next procedure.
No Replace the main PCB, see
"2.8.2 Repair procedures" on
page 33
.
To check the wiring of the main PCB
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 the wiring on the main PCB
correct? Action
Yes Return to "2.8.1 Checking
procedures" on page 32 of the
main PCB and continue with the
next procedure.
No Adjust the wiring of the main
PCB, see
"2.8.2 Repair
procedures" on page 33 .
To check the fuse of the main PCB
1 Measure the continuity of the fuse. If no continuity is measured,
the fuse is blown.
a
a Fuse
Blown fuse on the main PCB? Action
Yes Replace the blown fuse, see
"2.8.2 Repair procedures" on
page 33
.
No Return to "2.8.1 Checking
procedures" on page 32 of the
main PCB and continue with the
next procedure.
Problem solved?
After all checking procedures listed above have been performed:
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.
2.8.2 Repair procedures
To adjust the power of the main PCB
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 "2.8.1 Checking
procedures" on page 32 of the
PCB and continue with the next
procedure.
To remove the main 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 Disconnect all connectors from the main PCB.
2 Remove the screws from the main PCB.
3 Remove the main PCB from the unit.
4 To install the main PCB, see "2.8.2 Repair procedures" on
page 33 .
To install the main PCB
1 Apply heat sink compound to the heat sink.
2 Install and tighten the screws.
3 Connect all connectors to the main PCB.
INFORMATION
Use the wiring diagram and connection diagram for correct
installation of the connectors, see
"5.2 Wiring diagram" on
page 50 .
Is the problem solved? Action
Yes No further actions required.
No Return to "2.8.1 Checking
procedures" on page 32 of the
PCB and continue with the next
procedure.
To adjust the wiring of the main PCB
1 Adjust the wiring according to the wiring diagram and
connection diagram, see
"5.2 Wiring diagram" on page 50 .