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Components
Service manual
79
ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01D – 2022.02
To perform an electrical check of the indoor unit main PCB
Procedure not available yet.
To check if the correct spare part is installed
Prerequisite:
First perform all earlier checks of the indoor unit main PCB, see
78].
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.
Is the correct spare part for the indoor
unit main PCB installed?
Action
Yes
Return to
main PCB and continue with the next
procedure.
No
Replace the indoor unit main PCB, see
80].
To check the wiring of the indoor unit main PCB
Prerequisite:
First perform all earlier checks of the indoor unit main PCB, see
78].
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
1
Check that all wires are properly connected and that all connectors are fully
plugged‑in.
2
Check that no connectors or wires are damaged.
3
Check that the wiring corresponds with the wiring diagram, see
INFORMATION
Correct the wiring as needed.
Is the problem solved?
Action
Yes
No further actions required.
No
Return to
main PCB and continue with the next
procedure.
To check the fuse of the indoor unit main PCB
Prerequisite:
First perform all earlier checks of the indoor unit main PCB, see
78].
1
Measure the continuity of the fuse. If no continuity is measured, the fuse has
blown.
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