Daikin Emura RXJ20A5V1B Service Manual page 124

4 | Components
Problem solved?
Repair procedures
To remove the main PCB
Service manual
124
VDC Com
DC– W
Are the test results OK?
Yes
No
After all checking procedures listed above have been performed:
Is the problem solved?
Yes
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).
d d
d
d
d
a Power supply wires from X1M
b Wire from X1M
c Ground wiring
d Screw
e Main PCB
3 Disconnect the wire from the terminal X1M.
4 Remove the screw and remove the ground wiring from the switch box.
Ref VDC
0.475 V W
Action
Power modules are OK. Return to
"Checking procedures" [
main PCB and continue with the next
procedure.
Replace the main PCB, see
procedures" [
Action
No further actions required.
Return to the troubleshooting of the
specific error and continue with the
next procedure.
"4.14 Plate
e
c
Com Ref
DC– O.L
4
117] of the
"Repair
4
124].
4
work" [ 144].
b
a
a
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04B – 2022.08