Daikin Emura RXJ20A5V1B Service Manual page 132

4 | Components
To install the main PCB
Service manual
132
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
1 Disconnect the power supply wires from the main power supply terminal
X1M.
2 Remove the ferrite core (for power supply wires) from the switch box (unplug
fixation plug).
3 Cut the tie strap that fixes the power supply wires to the switch box.
i
c
i
i
a Power supply wires from X1M
b Ferrite core (power supply wires)
c Tie strap (power supply wires)
d Screw (ground wiring)
e Ferrite core (ground wiring)
f Compressor connector
g Tie strap (compressor harness)
h Ferrite core (compressor harness)
i Screw
j Main PCB
4 Remove the screw and remove the ground wiring from the switch box.
5 Disconnect the compressor connector.
6 Cut the tie straps that fix the compressor harness to the switch box.
7 Remove the ferrite core (for compressor harness) 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.
2 Install the main PCB in the correct location in the switch box.
j
e b d i
f g i
"Repair procedures" [
4
"4.14 Plate work" [ 144].
a
i
i
h
4
131].
RXJ20~50A + FTXJ-A(W)(S)(B)
ESIE22-04B – 2022.08
Split Emura 3 R32