Daikin RKS42G2V1B User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Outdoor Unit
Inverter
Pair Type
2.5/4.2/4.6/5.0 kW Class
Si001070

Service Manual
Removal Procedure
Outdoor Unit
zCooling Only zHeat Pump
RKS42G2V1B RXG50JV2C
RXG50KV2C
RKS42J2V1B
RXL25G2V1B
RXL25G3V1B
RXS42G2V1B
RXS42J2V1B
RXS46JV2C
ARXS42G2V1B

Si001070
Removal Procedure 1
Table of Contents
1. Removal of Outer Panels ........................................................................2
2. Removal of Electrical Box .......................................................................4
3. Removal of PCB......................................................................................9
4. Removal of Partition Plate / Sound Blankets ........................................14
5. Removal of Outdoor Fan / Fan Motor ...................................................16
6. Removal of Thermistors ........................................................................20
7. Removal of Drain Pan Heater ASSY (Pattern 1)...................................21
8. Removal of Drain Pan Heater ASSY (Pattern 2)...................................23
9. Removal of Four Way Valve / Electronic Expansion Valve...................26
10.Removal of Compressor .......................................................................29
Note: The illustrations may be slightly different depending on the model.
The illustrations are for heat pump models as representative.

Removal of Outer Panels Si001070
2Removal Procedure
1. Removal of Outer Panels
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1. Features +Illustrations are slightly
different depending on the
model.
Some models do not have
guard nets.
2. Remove the panels.
1Remove the screw and
remove the drain pan
heater cover.
Some models do not have a
drain pan heater cover.
DAIKIN
INVERTER
(R7186)
(R18392)
Guard net
(R9329)
Drain pan
heater cover

Si001070 Removal of Outer Panels
Removal Procedure 3
2Remove the 2 screws
to remove the top
panel, and 7 screws to
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.
Step Procedure Points
(R12305)
Top panel
Hooks
Hooks
Discharge grille Front panel
(R9364)
(R8139)
Stop
valve
cover
(R12213)
Shield plate

Removal of Electrical Box Si001070
4Removal Procedure
2. Removal of Electrical Box
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1. Disconnect the
connecting wires.
When reassembling, fasten
the wires with screws on the
terminal board.
1Remove the 3 screws
to remove the wiring
fixture.
Then remove the all
screws to disconnect
the power supply
cables and the
connecting wires.
2. Remove the electrical
box.
1Release the outdoor
temperature thermistor.
2Lift up the guard net
and remove it.
(R12192)
Wiring fixture
Power
supply
cable
Connecting
wire
Terminal
board
(R12193)
Outdoor temperature thermistor
(R8143)
Guard net

Si001070 Removal of Electrical Box
Removal Procedure 5
3Remove the 7 screws,
and remove the right
side panel.
4Remove the screw of
the terminal board.
5Disconnect the
connectors of the drain
pan heater.
Some models do not have a
drain pan heater.
6Cut the clamp.
Step Procedure Points
(R9365)
Right side panel
(R9366)
Terminal strip
(R9367)
(R9368)

Removal of Electrical Box Si001070
6Removal Procedure
7Disconnect the
connector for the fan
motor [S70].
For removal procedure of the
fan motor lead wire, refer to
“Removal of Outdoor Fan /
Fan Motor”.
8Disconnect the
connector for the
overload protector
[S40].
9Disconnect the
connector for the
electronic expansion
valve coil [S20].
10 Disconnect the
connector for the four
way valve coil [S80].
Step Procedure Points
(R0254)
[S70]
(R0255)
[S40]
(R0256)
[S20]
(R0257)
[S80]

Si001070 Removal of Electrical Box
Removal Procedure 7
11 Disconnect the
connector for the
thermistors [S90].
12 Disconnect the relay
connector for the
compressor.
13 Disconnect the 2
connectors for the
reactor.
Step Procedure Points
(R0258)
[S90]
(R0259)
(R0260)

Removal of Electrical Box Si001070
8Removal Procedure
14 Release the discharge
pipe thermistor.
Be careful not to lose the clip
for the thermistor.
15 Detach the clamp for
the thermistors from the
electrical box.
16 Remove the screw in
front of the electrical
box.
17 Lift and remove the
electrical box.
Step Procedure Points
(R12197)
Discharge
pipe thermistor
(R12279)
Clip
(R0262)
(R12196)
(R0263)
(R0264)

Si001070 Removal of PCB
Removal Procedure 9
3. Removal of PCB
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1Remove the screw and
remove the electrical
box cover.
Preparation
Remove the panels
according to the “Removal of
Outer Panels”.
Remove the electrical box
according to the “Removal of
Electrical Box”.
2Detach the insulation
sheet.
The trimmed part goes front.
3Remove the 2 screws
of the earth terminals.
(R12274)
Electrical box cover
(R8156)
(R8157)
Insulation
sheet
Earth
terminals
(R8158)

Removal of PCB Si001070
10 Removal Procedure
4Release the earth wire
from the hook.
5Remove the 2 screws
and detach the 1 clip to
remove the radiation
shield plate.
6Cut off the 5 clamps
and disconnect the wire
harnesses.
Step Procedure Points
(R8159)
(R12198)
Radiation shield plate
Clip
(R8161)
(R8162)

Si001070 Removal of PCB
Removal Procedure 11
7Remove the 8 screws in
total to remove the
PCB.
8Lift up the back side
slightly and unfasten
the hooks of the front.
When reassembling, make
sure that the hooks of the
electrical box are placed on
the PCB.
9Lift up the PCB.
Step Procedure Points
(R8163)
(R8164)
(R8166)
Hooks
(R8167)

Removal of PCB Si001070
12 Removal Procedure
10 Remove the PCB.
11 Detach the terminals
from the terminal board.
[S20] : electronic expansion
valve coil
[S40] : overload protector
[S70] : fan motor
[S80] : four way valve coil
[S90] : thermistors
Step Procedure Points
(R8168)
(R8169)
[S70] [S40]
[S90]
[S20]
[S80]

Si001070 Removal of PCB
Removal Procedure 13
12 Remove the screw of
the radiation fin.
Step Procedure Points
(R12214)
Radiation fin
(R8171)

Removal of Partition Plate / Sound Blankets Si001070
14 Removal Procedure
4. Removal of Partition Plate / Sound Blankets
Procedure Warning Be sure to wait 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 pull the
partition plate to
remove.
Remove the screw to
remove the reactor.
(R12282)
Partition plate
(R14110)
(R14111)
Reactor
Notch
(R13802)
Drain pan
heater cable
Reactor
Some models have notches
on the lower side of the
partition plate.
When reassembling, pass
the drain pan heater cable
through the notch.

Si001070 Removal of Partition Plate / Sound Blankets
Removal Procedure 15
2. Remove of the sound
blanket.
Since the piping ports are
torn easily, remove the
blanket carefully.
1Untie the string, open
the sound blanket
(outer) and pull it out.
2Remove the sound
blanket (top upper).
The design of the sound
blankets is different
depending on the models.
3Remove the sound
blanket (top lower).
4Open the sound blanket
(inner) and pull it out.
Step Procedure Points
(R12199)
Sound blanket (outer) (R8180)
(R12200)
Sound blanket (top upper)
(R8178)
Sound blanket (top lower)
(R12201)
Sound blanket (inner)

Removal of Outdoor Fan / Fan Motor Si001070
16 Removal Procedure
5. Removal of Outdoor Fan / Fan Motor
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1. Remove the outdoor fan. Nut size: M6
1Remove the washer
fitted nut of the outdoor
fan.
2Remove the outdoor
fan.
When reassembling, align
the mark of the outdoor
fan with the D-cut section of
the motor shaft.
2. Remove the fan motor.
1Disconnect the
connector for the fan
motor [S70].
(R8181)
10 mm
(R12236)
(R8182)
D-cut
(R8183)
(R8184)
[S70]

Si001070 Removal of Outdoor Fan / Fan Motor
Removal Procedure 17
2The figure shows the
arrangement of the fan
motor lead wire.
3Cut the clamp. Some models do not have
clamps.
Step Procedure Points
(R8185)
(R13801)

Removal of Outdoor Fan / Fan Motor Si001070
18 Removal Procedure
4Remove the 1 screw of
the fan motor fixing
frame.
5Remove the fan motor
fixing frame.
Step Procedure Points
(R12202)
Fan motor
fixing frame
(R8187)
(R8188)