Repair Procedures - Daikin FTXA20A Service Manual

2 | Components
To check the wiring of the indoor unit main PCB
Problem solved?

2.8.2 Repair procedures

To remove the indoor unit main PCB
Service manual
78
Is the correct spare part for the indoor
unit PCB installed?
Yes
No
Prerequisite: First perform all earlier checks of the indoor unit main PCB, see
"2.8.1 Checking procedures" [
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
4
diagram" [ 171].
INFORMATION
Correct the wiring as needed.
Is the problem solved?
Yes
No
After all checking procedures listed above have been performed:
Is the problem solved?
Yes
No
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
1 Disconnect all connectors from the indoor unit main PCB.
2 Carefully click the indoor unit main PCB out of the PCB retainers.
Action
Return to "2.8.1 Checking
procedures" [
PCB and continue with the next
procedure.
Replace the indoor unit PCB, see
"2.8.2 Repair
4
75].
Action
No further actions required.
Return to "2.8.1 Checking
procedures" [
main PCB and continue with the next
procedure.
Action
No further actions required.
Return to the troubleshooting of the
specific error and continue with the
next procedure.
"2.14 Plate
FTXA20~50A(W)(S)(T) + FTXA20~50B(B)(S)(T) + RXA42+50A +
4
75] of the indoor unit
4
procedures" [ 78].
"5.2 Wiring
4
75] of the indoor unit
4
work" [ 120].
RXA20~35A(9) + RXA42+50B
Split Stylish R32
ESIE18-03D – 2021.05