Daikin RXM20R Service Manual page 133

Repair procedures
To remove the main PCB
To install the main PCB
RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R +
FVXM25~50A
Split New Perfera R32
ESIE20-11B – 2022.02
Is the problem solved?
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 the power supply wires from the main power supply terminal
X1M.
2 Remove the ferrite core(s) (for power supply wiring) from the switch box
(unplug fixation plug).
e e
e
e
e
a Power supply wires from X1M
b Wire from X1M
c Ground wiring
d Connector X11A
e Screw
f Main PCB
3 Disconnect the wire from the terminal X1M.
4 Remove the screw and remove the ground wiring from the switch box.
5 Remove the ferrite core (for ground wiring) from the switch box (unplug
fixation plug).
6 Disconnect the connector X11A.
7 Disconnect all other connectors from the main PCB.
8 Remove the screws from the main PCB.
9 Remove the main PCB from the unit.
10 To install the main PCB, see
1 Apply grease to the PCB contact surface of the heat sink. Distribute the grease
as evenly as possible.
Action
Return to the troubleshooting of the
specific error and continue with the
next procedure.
"4.14 Plate
f
c
4
"Repair procedures" [
4 Components
|
4
work" [ 153].
b
d
a
a
133].
Service manual
133