Daikin Sensira Series, Service Manual

Page: 69 / 172

2 | Components
Service manual
69
FTXF20~71A + FTXF20~25B + FTXF20~42C + ATXF20~71A + ATXF20~42C
+ RXF20~71A + RXF20~60B + RXF20~42C + ARXF20~71A + ARXF20~42C
Split Sensira R32
ESIE18-12E – 2021.02
To check the fuse of the indoor unit main PCB
Prerequisite: First perform all earlier checks of the indoor unit main PCB, see
"2.6.1 Checking procedures" [ 4 67].
1 Measure the continuity of the fuse. If no continuity is measured, the fuse has
blown.
a
a Fuse
Blown fuse on the indoor unit main
PCB? Action
Yes Replace the blown fuse, see
"2.6.2 Repair procedures" [
4
69].
No Return to "2.6.1 Checking
procedures" [
4
67] of the indoor unit
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.
2.6.2 Repair procedures
To correct the wiring from the indoor unit power supply terminal to the indoor unit main PCB
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see "2.10 Plate work" [ 4 101].
1 Correct the wiring from the indoor unit power supply terminal to the PCB, see
"5.2 Wiring diagram" [
4
142].
Is the problem solved? Action
Yes No further actions required.