Daikin FTXA20A - Page 83

2 | Components
Service manual
83
FTXA20~50A(W)(S)(T) + FTXA20~50B(B)(S)(T) + RXA42+50A +
RXA20~35A(9) + RXA42+50B
Split Stylish R32
ESIE18-03D – 2021.05
Is the correct spare part for the indoor
unit power PCB installed?
Action
No Replace the indoor unit power PCB, see
"2.9.2Repair procedures"[484].
To check the wiring of the indoor unit power PCB
Prerequisite: First perform all earlier checks of the indoor unit main PCB, see
"2.9.1Checking procedures"[481].
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 "5.2 Wiring
diagram"[4171].
INFORMATION
Correct the wiring as needed.
Is the problem solved? Action
Yes No further actions required.
No Return to "2.8.1Checking
procedures"[475] of the indoor unit
power 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
"2.9.1Checking procedures"[481].
1 Measure the continuity of the fuse. If no continuity is measured, the fuse has
blown.
a
a Fuse F1U
Blown fuse on the indoor unit power
PCB?
Action
Yes Replace the blown fuse, see
"2.9.2Repair procedures"[484].