Daikin Emura RXJ20A5V1B Service Manual page 131

Problem solved?
Repair procedures
To remove the main PCB
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04B – 2022.08
a U
b V
c W
d DC+
e DC–
INFORMATION
When measuring on the front of the main PCB, make sure to locally remove the
protective varnish with the test leads of the multi meter.
VDC Com
U DC+
V DC+
W DC+
DC– U
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.
e
Ref VDC
0.501 V DC+
0.501 V DC+
0.501 V DC+
0.501 V
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.
4 Components
|
a
b
c
d
Com
U
V
W
U DC–
V DC–
W DC–
4
procedures" [ 126] of the
"Repair
4
131].
Ref
O.L
O.L
O.L
O.L
O.L
O.L
Service manual
131