Daikin RKS20G2V1B User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
2.0/2.5/3.5 kW Class
Outdoor Unit
Inverter
Pair Type
Si00-872

Service Manual
Removal Procedure
Outdoor Unit
zCooling Only zHeat Pump
RKS20G2V1B ARXG25E3V1B RXG25E3V1B
RKS25G2V1B ARXG35E3V1B RXG35E3V1B
RKS35G2V1B
ARXS20G2V1B RXS20G2V1B
ARXS25G2V1B RXS25G2V1B
ARXS35G2V1B RXS35G2V1B

Si00-872
Removal Procedure 1
Table of Contents
1. Removal of Outer Panels / Fan Motor.....................................................2
2. Removal of Electrical Box .....................................................................10
3. Removal of Thermistors ........................................................................13
4. Removal of PCB....................................................................................14
5. Removal of Reactor / Partition Plate .....................................................16
6. Removal of Sound Blankets..................................................................18
7. Removal of Four Way Valve .................................................................19
8. Removal of Compressor .......................................................................22
Note: The illustrations may be slightly different depending on the model.
The illustrations are for heat pump models as representative.

Removal of Outer Panels / Fan Motor Si00-872
2Removal Procedure
1. Removal of Outer Panels / Fan Motor
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1. Features
Some models do not have a
guard net.
Take care not to cut your
finger by the fins of the
outdoor heat exchanger.
2. Remove the panels.
The stop valve cover is
united with the shield plate.
When reassembling, make
sure to fit the 5 hooks.
1Remove the screw of
the stop valve cover.
Pull down the stop
valve cover and remove
it.
DAIKIN
INVERTER
(R7186)
(R11890)
(R7188)
Stop
valve
cover
Shield plate
Hooks
(R7189)

Si00-872 Removal of Outer Panels / Fan Motor
Removal Procedure 3
2Remove the 2 screws
and lift the top panel.
3Remove the drip proof
plate.
4Remove the 4 screws
and remove the
discharge grille.
The discharge grille has 4
hooks.
Step Procedure Points
DAIKIN
INVERTER
Top panel
(R7190)
DAIKIN
INVERTER
(R7191)
Drip proof plate
DAIKIN
INVERTER
(R7192)
Discharge
grille
(R7193)

Removal of Outer Panels / Fan Motor Si00-872
4Removal Procedure
5Remove the 7 screws
of the front panel.
6Unfasten the hooks.
Pull and remove the
front panel.
The front panel has 4 hooks.
Step Procedure Points
DAIKIN
INVERTER
(R12304)
Front panel
(R7195)
Hooks

Si00-872 Removal of Outer Panels / Fan Motor
Removal Procedure 5
3. Remove the fan motor. 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.
3Cut the clamp.
Step Procedure Points
(R7196)
Outdoor fan
10 mm
(R12236)
(R9330)
D-cut
(R7198)

Removal of Outer Panels / Fan Motor Si00-872
6Removal Procedure
4Disconnect the
connector for the fan
motor [S70].
5Release the fan motor
lead wire from the hook.
6Open the hooks and
release the fan motor
lead wire.
When reassembling, put the
fan motor lead wire through
the back of the fan motor (so
as not to be entangled with
the outdoor fan).
7Remove the 4 screws
and remove the fan
motor.
Be sure to remove the lower
screws first. If the upper
screws are removed first, the
fan motor, the center of
gravity of which is toward the
front, may tilt down or fall,
getting you injured.
Step Procedure Points
(R9332)
[S70]
Fan motor
lead wire
(R7200)
(R7201)
(R3249)
Lead wire Outdoor fan
Fan motor
(R7202)

Si00-872 Removal of Outer Panels / Fan Motor
Removal Procedure 7
8Remove the screw and
remove the fan motor
fixing frame.
When reassembling, fit the
lower hooks into the bottom
frame.
Step Procedure Points
(R9333)
Fan motor fixing frame
(R9334)
(R7206)

Removal of Outer Panels / Fan Motor Si00-872
8Removal Procedure
4. Remove the right side
panel.
1Remove the 2 screws
on the rear side.
2Release the outdoor
temperature thermistor.
3Lift up the guard net
and remove it.
4Remove the 4 screws
on the right side panel.
Step Procedure Points
(R7207)
(R7208)
Outdoor temperature thermistor
Guard net
(R7209)
(R9337)
Right side panel

Si00-872 Removal of Outer Panels / Fan Motor
Removal Procedure 9
5Remove the screw near
the stop valves.
6Unfasten the hook on
the rear side.
When reassembling, make
sure to fit the hook.
7Lift up the right side
panel and remove it.
When reassembling, make
sure to fit the hook.
Step Procedure Points
(R7211)
(R7212)
(R7213)
Hook

Removal of Electrical Box Si00-872
10 Removal Procedure
2. Removal of Electrical Box
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1Disconnect the 2
connectors for the
reactor.
Preparation
Remove the panels and
disconnect the connector for
the fan motor according to
the “Removal of Outer
Panels / Fan Motor”.
2Cut the clamps at 2
locations.
3Disconnect the
connector for the
compressor [S30].
When reassembling, coil the
excessive lead wire and
hang the loop on the hook.
(R9338)
(R9339)
(R9340)
[S30]

Si00-872 Removal of Electrical Box
Removal Procedure 11
4Disconnect the
connectors for the
magnetic relay [S50]
and for the thermistors
[S90].
5Disconnect the
connectors for the filter
PCB [S10] and for the
overload protector
[S40].
6Disconnect the
connectors for the
electronic expansion
valve coil [S20] and for
the four way valve coil
[S80].
The cooling only models do
not have the harness for
[S80].
7Disconnect the
connectors for the filter
PCB [HL3] [HN3].
Step Procedure Points
(R9341)
[S90] [S50]
(R9342)
[S40] [S10]
(R9343)
[S80] [S20]
(R9344)
[HN3] [HL3]

Removal of Electrical Box Si00-872
12 Removal Procedure
8Remove the wire
harness for standby
electricity saving.
Some models do not have
the harness for standby
electricity saving.
9Cut the clamps at 2
locations.
10 Lift and remove the
electrical box.
Step Procedure Points
(R9345)
Wire harness
(R9346)
(R9348)
Electrical box

Si00-872 Removal of Thermistors
Removal Procedure 13
3. Removal of Thermistors
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1Release the discharge
pipe thermistor.
Be careful not to lose the clip
for the thermistor.
2Cut the clamp.
3Pull out the outdoor
heat exchanger
thermistor.
Be careful not to lose the clip
for the thermistor.
4Feature of the
thermistors
(R0267)
Discharge pipe thermistor
(R12279)
Clip
(R7221)
(R7222)
Outdoor heat exchanger
thermistor
(R3264)
Clip
(R9356)

Removal of PCB Si00-872
14 Removal Procedure
4. 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
1Feature of the main
PCB
You can remove the main
PCB when you disconnect
the lead wires on the
terminal board without
removing the electrical box.
2Remove the screw on
the terminal board.
3Release the 2 earth
terminals.
(R9357)
(R7256)
Terminal
board
(R9358)
Earth
terminals

Si00-872 Removal of PCB
Removal Procedure 15
4Remove the 4 screws.
5Unfasten the 3 hooks
on the upper side.
6Lift and pull out the
main PCB.
7Feature of the main
PCB
[S10] [HL3] [HN3]: filter PCB
[S20]: electronic expansion
valve coil
[S30]: compressor
[S40]: overload protector
[S50]: magnetic relay
[S70]: fan motor
[S80]: four way valve coil
[S90]: thermistors
Step Procedure Points
(R9359)
Screws
(R9360)
(R9361)
(R12189)
[S10] [S40] [S90] [S50]
[S70]
[S20][S80][HL3][HN3]
[S30]

Removal of Reactor / Partition Plate Si00-872
16 Removal Procedure
5. Removal of Reactor / Partition Plate
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 reactor. Preparation
Remove the outer panels
according to the “Removal of
Outer Panels / Fan Motor”.
Remove the electrical box
according to the "Removal of
Electrical Box".
1Remove the screw and
remove the reactor.
2. Remove the partition
plate.
1Remove the 2 screws.
(R7224)
Reactor
(R7225)
(R7226)
Partition plate

Si00-872 Removal of Reactor / Partition Plate
Removal Procedure 17
2The partition plate has
a hook on the lower
side. Lift and pull the
partition plate to
remove.
When reassembling, fit the
lower hook into the bottom
frame.
Step Procedure Points
(R7227)
(R7228)
Hook

Removal of Sound Blankets Si00-872
18 Removal Procedure
6. Removal of Sound Blankets
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1Untie the string and
open the sound blanket
(outer).
Preparation
Remove the outer panels
according to the “Removal of
Outer Panels / Fan Motor”.
Remove the electrical box
according to the "Removal of
Electrical Box".
The design of the sound
blankets varies depending
on the model.
2Lift and remove the
sound blanket (outer).
Since the piping ports are
torn easily, remove the
sound blanket carefully.
3Remove the sound
blanket (top).
4Pull the sound blanket
(inner) out.
(R7229)
Sound blanket (outer)
(R12212)
(R7231)
Sound blanket
(top)
Sound blanket (inner)
(R12271)