Daikin RXTA30B2V1B Service Manual page 133

To install 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
6 Remove the screw and remove the ground wiring from the switch box.
7 Remove the ferrite core (for ground wiring) from the switch box (unplug
fixation plug).
8 Disconnect all other connectors from the main PCB.
9 Remove the screws from the main PCB.
10 Remove the main PCB from the unit.
11 To install the main PCB, see
1 Apply grease to the PCB contact surface of the heat sink. Distribute the grease
as evenly as possible.
CAUTION
ALWAYS apply new grease on the PCB heat sink. NOT doing so may cause the PCB to
fail due to insufficient cooling.
a c
a Heat sink
b Contact surface
c Terminal X1M
2 Install the main PCB on the correct location in the switch box.
a e
a Compressor wiring harness
b Power supply wiring
c Red wire
d Ground wire
e Screw
f Terminal X1M
3 Install and tighten the screws.
4 Install the ground wiring on the switch box and fix using the screw.
5 Fix the ferrite core (for ground wiring) to the switch box (fixation plug).
"4.14.2 Repair procedures" [
b
c b d
4 Components
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4
132].
f
Service manual
133