Daikin RXTA30B2V1B Service Manual page 129

To check the fuse of the main PCB
To check the rectifier voltage of the main PCB
RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)
(B)+FTXTM30+40R2V1B+FTXTP25+35M5V1B+ATXTP25+35M5V1B
R32 Optimized Heating 4 Split
ESIE21-12A – 2022.02
Is the problem solved?
No
Prerequisite: First perform all earlier main PCB checks, see
4
procedures" [ 126].
1 Measure the continuity of the fuse. If no continuity is measured, the fuse has
blown.
a Fuse
Blown fuse on the main PCB?
Yes
No
Prerequisite: First perform all earlier main PCB checks, see
4
procedures" [ 126].
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.
a b
a + terminal
b – terminal
Action
Return to "4.14.1 Checking
procedures" [
continue with the next procedure.
a
a a
Action
Replace the blown fuse, see
"4.14.2 Repair
Return to "4.14.1 Checking
procedures" [
and continue with the next procedure.
4 Components
|
4
126] of the PCB and
"4.14.1 Checking
4
procedures" [ 132].
4
126] of the main PCB
"4.14.1 Checking
Service manual
129