4
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Components
Service manual
130
RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)
(B)+35M5V1B
R32 Optimized Heating 4 Split
ESIE21-12A – 2022.02
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.
Is the measured rectifier voltage
correct?
Action
Yes
Perform a check of the power modules,
see
No
Replace the main PCB, see
To perform a diode module check
1
First check the rectifier voltage of the main PCB, see
INFORMATION
If the rectifier voltage is OK, the diode module is OK. If rectifier voltage is NOT OK,
proceed as described in the rectifier voltage check procedure.
Below procedure describes how to check the diode module itself.
Prerequisite:
Stop the unit operation via the user interface.
2
Turn OFF the respective circuit breaker.
DANGER: RISK OF ELECTROCUTION
Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure
the rectifier voltage is below 10 V DC before proceeding.
3
Check the diode module in reference with the image and the table below.
a b c d
a
V DC out (+)
b
V AC in
c
V AC in
d
V DC out (–)
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
Ref
VDC
Com
Ref
d
b
0.51~0.52 V
b
d
O.L
b
a
0.51~0.52 V
a
b
O.L
d
c
0.51~0.52 V
c
d
O.L
Summary of Contents for RXTA30B2V1B
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