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Components
Service manual
133
RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R +
FVXM25~50A
Split New Perfera R32
ESIE20-11B – 2022.02
Is the problem solved?
Action
No
Return to the troubleshooting of the
specific error and continue with the
next procedure.
Repair procedures
To remove the 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
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
f
a
a
b
c
d
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
1
Apply grease to the PCB contact surface of the heat sink. Distribute the grease
as evenly as possible.