Daikin FTXA20A Service Manual page 108

2 | Components
Problem solved?
Repair procedures
To remove the main PCB
Service manual
108
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.
A
e
e
c
b
e
d
b
d
A RXA42~50A unit
a Compressor wiring harness
b Power supply wiring
c Power supply wiring (red wire)
d Ground wire
Ref VDC
0.501 V V
0.501 V W
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.
a e
e
e
FTXA20~50A(W)(S)(T) + FTXA20~50B(B)(S)(T) + RXA42+50A +
Com Ref
DC–
DC–
4
procedures" [ 99] of the
"Repair
4
108].
4
"2.14 Plate work" [ 120].
RXA20~35A(9) + RXA42+50B
Split Stylish R32
ESIE18-03D – 2021.05
O.L
O.L