Daikin RXM20R Service Manual page 128

4 | Components
To check the fuse of the main PCB
To check the rectifier voltage of the main PCB
Service manual
128
Is the problem solved?
No
Prerequisite: First perform all earlier main PCB checks, see
4
procedures" [ 125].
1 Measure the continuity of the fuse. If no continuity is measured, the fuse has
blown.
b
a Fuse F1U
b Fuse F2U
Blown fuse on the main PCB?
Yes
No
Prerequisite: First perform all earlier main PCB checks, see
4
procedures" [ 125].
1 Turn ON the power of the unit.
2 Measure the voltage on the rectifier voltage check terminals (+ and –) on the
main PCB.
Result: The measured voltage MUST be approximately 324 V DC.
Action
Return to "Checking
4
procedures" [ 125] of the PCB and
continue with the next procedure.
a
Action
Replace the main PCB, see
4
procedures" [ 133].
Return to "Checking
4
procedures" [ 125] of the main PCB
and continue with the next procedure.
RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R +
"Checking
"Repair
"Checking
FVXM25~50A
Split New Perfera R32
ESIE20-11B – 2022.02