Daikin Perfera RXM R Series Service Manual page 138

3 | Components
Problem solved?
Repair procedures
To remove the main PCB
Service manual
138
VDC Com
DC– V
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
and route the wires out of the ferrite core.
2 Cut the tie strap that fixes the power supply wires to the switch box.
j
c
j
j
a Power supply wires from X1M
b Ferrite core (power supply wires)
c Tie strap (power supply wires)
d Screw (ground wiring)
e Ferrite core (ground wiring)
f Connector X12A
g Compressor connector
h Tie strap (compressor harness)
Ref VDC
0.501 V
0.501 V
Action
Power module is OK. Return to
"Checking
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.
j
k e d b
g
h j h
RXM20~71R + ARXM25~71R + FTXM20~71R + ATXM25~50R +
Com
V DC–
W DC–
4
procedures" [ 132] of the
"Repair
4
138].
4
"3.14 Plate work" [
a
f
j
j
i
Split New Perfera R32
ESIE20-11 – 2021.01
Ref
O.L
O.L
151].
FVXM25~50A