Daikin RXTA30B2V1B Service Manual page 131

To perform a power module check
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
VDC Com
c a
4 If the diode module is NOT OK, replace the main PCB, see
4
procedures" [ 132].
Prerequisite: First check the rectifier voltage of the main PCB, see
4
procedures" [ 126].
Prerequisite: Stop the unit operation via the user interface.
1 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.
Power module IPM1 for compressor
1 Disconnect the compressor connector.
2 Check the power module IPM1 in reference with the image and the table
below.
c b
e
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+
Ref VDC
0.51~0.52 V
a d
Ref VDC
0.501 V DC+
4 Components
|
Com
a c
"4.14.2 Repair
"4.14.1 Checking
Com
U
Ref
O.L
Ref
O.L
Service manual
131