Daikin ARXS42G3V1B User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Outdoor Unit
Inverter
Pair Type
4.2 kW Class
Si001277

Service Manual
Removal Procedure
Outdoor Unit
zHeat Pump
ARXS42G3V1B
RXS42K2V1B

Si001277
Removal Procedure 1
Table of Contents
1. Outer Panels ...........................................................................................2
2. Electrical Box ..........................................................................................3
3. PCB.........................................................................................................6
4. Partition Plate / Sound Blankets..............................................................8
5. Outdoor Fan / Fan Motor.......................................................................10
6. Thermistors ...........................................................................................12
7. Four Way Valve / Electronic Expansion Valve......................................13
8. Compressor...........................................................................................16
Note: The illustrations may be slightly different depending on the model.

Outer Panels Si001277
2Removal Procedure
1. Outer Panels
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1
2
Remove the 2 screws
and remove the top
panel.
Remove the 8 screws
and remove the front
panel.
The front panel has 4 hooks.
3Remove the 4 screws
and remove the
discharge grille.
When reassembling, make
sure to fit the 4 hooks.
4Remove the screw and
remove the stop valve
cover.
The stop valve cover is
united with the shield plate.
When reassembling, make
sure to fit the 5 hooks.
(R18665)
Hook
Hook
(R9364)
(R8139)
Stop
valve
cover
(R12213)
Shield plate
Top panel
Discharge grille Front panel

Si001277 Electrical Box
Removal Procedure 3
2. Electrical Box
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1
2
Remove the 3 screws
and remove the wire
fixture.
Remove all the screws
to disconnect the power
supply cables and the
connecting wires.
When reassembling, fasten
the wires with screws on the
terminal board.
3Release the outdoor
temperature thermistor.
4Lift up the protection
net and remove it.
5Remove the 7 screws
and remove the right
side panel.
(R18666)
Wire fixture
Power
supply
cable
Connecting
wire
Terminal
board
(R12193)
Outdoor temperature thermistor
(R18894)
Protection
net
(R12217)
Right side panel

Electrical Box Si001277
4Removal Procedure
6Disconnect the
connector [S70].
[S70]: fan motor
7Disconnect the
connector [S20] [S40]
[S80] [S90].
[S20]: electronic expansion
valve coil
[S40]: overload protector
[S80]: four way valve coil
[S90]: thermistors
8Disconnect the relay
connector for the
compressor.
9Disconnect the 2
connectors for the
reactor.
When reassembling, you
can connect the 2 harnesses
in either way regardless of
the color.
Step Procedure Points
(R0254)
[S70]
(R18668)
[S40] [S90] [S20] [S80]
(R0259)
(R0260)

Si001277 Electrical Box
Removal Procedure 5
10 Release the discharge
pipe thermistor.
Be careful not to lose the
fixture for the thermistor.
11 Detach the clamp for
the thermistors from the
electrical box.
12 Remove the screw in
front of the electrical
box.
13 Lift and remove the
electrical box.
Step Procedure Points
(R12197)
Discharge
pipe thermistor
(R18789)
Fixture
(R0262)
(R12196)
(R0263)
(R0264)

PCB Si001277
6Removal Procedure
3. PCB
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1
2
Remove the screw and
remove the electrical
box cover.
Detach the insulation
sheet.
The trimmed part goes front.
3
4
5
Remove the 2 screws
of the earth terminals.
Release the earth wire
from the hook.
Remove the screw of
the terminal board.
6Remove the 2 screws
and detach the clip to
remove the radiation
shield plate.
Electrical box cover
Insulation
sheet
(R18895)
Terminal
board
Earth
terminal
(R18670)
Hook
(R12198)
Radiation shield plate
Clip

Si001277 PCB
Removal Procedure 7
7Cut the 5 clamps and
disconnect the wire
harnesses.
8
9
Remove the 8 screws
of the PCB.
Lift up the back side
slightly and unfasten
the 3 hooks of the front.
When reassembling, make
sure to fit the 3 hooks of the
electrical box.
10 Lift up and remove the
PCB.
11 Remove the screw and
remove the radiation
fin.
Step Procedure Points
(R8162)
(R18671)
PCB
Hook
(R8168)
(R12214)
Radiation fin

Partition Plate / Sound Blankets Si001277
8Removal Procedure
4. Partition Plate / Sound Blankets
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1. Remove the partition
plate.
When reassembling, fit the
lower hooks into the bottom
frame.
1Remove the 2 screws.
2
3
The partition plate has
hooks on the lower
side. Lift and remove
the partition plate.
Remove the screw to
remove the reactor.
2. Remove of the sound
blanket.
Since the piping ports are
torn easily, remove the
blanket carefully.
1Remove the sound
blanket (outer).
(R12282)
Partition plate
(R14110)
(R14111)
Reactor
(R12199)
Sound blanket (outer) (R8180)