Daikin Perfera RXM20R, Service Manual

Page: 115 / 260

4 | Components
Service manual
115
RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R +
FVXM25~50A
Split New Perfera R32
ESIE20-11B – 2022.02
Is the correct spare part for the indoor
unit power PCB installed? Action
Yes Return to "4.10.1 Checking
procedures" [
4
112] of the indoor unit
power PCB and continue with the next
procedure.
No Replace the indoor unit power PCB, see
"4.10.2 Repair procedures" [
4
117].
To check the wiring of the indoor unit power PCB
Prerequisite: First perform all earlier checks of the indoor unit main PCB, see
"4.10.1 Checking procedures" [
4
112].
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 "7.2 Wiring
diagram" [
4
226].
INFORMATION
Correct the wiring as needed.
Is the problem solved? Action
Yes No further actions required.
No Return to "4.9.1 Checking
procedures" [ 4 106] 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
"4.10.1 Checking procedures" [
4
112].
1 Measure the continuity of the fuse. If no continuity is measured, the fuse has
blown.