Daikin RKS25E2V1B User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
2.5/3.5 kW Class
Outdoor Unit
Inverter
Pair Type
Si001071

Service Manual
Removal Procedure
Outdoor Unit
zCooling Only zHeat Pump
RKS25E2V1B RXS25E2V1B
RKS35E2V1B RXS35E2V1B

Si001071
Removal Procedure 1
Table of Contents
1. Removal of Outer Panels / Fan Motor.....................................................2
2. Removal of Electrical Box .......................................................................9
3. Removal of PCB....................................................................................12
4. Removal of Reactor / Partition Plate .....................................................14
5. Removal of Sound Blanket....................................................................16
6. Removal of Four Way Valve .................................................................18
7. Removal of Compressor .......................................................................21
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 Si001071
2Removal Procedure
1. Removal of Outer Panels / 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. Appearance features
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.
(R3235)
(R11890)
Stop
valve
cover
(R3237)
Hooks
(R12421)
Shield plate

Si001071 Removal of Outer Panels / Fan Motor
Removal Procedure 3
2Remove the 3 screws
and lift the top panel.
3Remove the drip proof
plate.
4Disconnect the
connector for the fan
motor [S70].
The fan motor is united with
the front panel.
5Remove the 6 screws
of the front panel.
Step Procedure Points
(R12413)
Top panel
(R3240)
Drip proof plate
[S70] (R3241)
(R12414)
Front panel

Removal of Outer Panels / Fan Motor Si001071
4Removal Procedure
6Unfasten the hooks.
Pull and remove the
front panel.
The front panel has 4 hooks.
3. Remove the fan motor. Nut size: M6
1Unscrew 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.
Step Procedure Points
Hooks
(R3243)
Outdoor fan (R12416)
10 mm
(R12415)
D-cut
(R3245)

Si001071 Removal of Outer Panels / Fan Motor
Removal Procedure 5
3Remove the 2 screws
and lift the bell mouth to
unfasten the hooks.
4Remove the bell mouth.
5Open 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)
Step Procedure Points
(R12422)
Hooks
Bell mouth
(R3247)
(R3248)
(R3249)
Lead wire Outdoor fan

Removal of Outer Panels / Fan Motor Si001071
6Removal Procedure
6Remove the 4 screws
and remove the fan
motor.
M4×16
7Remove the 2 screws
and remove the fan
motor fixing frame.
Step Procedure Points
Fan motor (R3250)
(R3251)
Fan motor fixing frame
(R3252)

Si001071 Removal of Outer Panels / Fan Motor
Removal Procedure 7
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.
Step Procedure Points
(R7207)
(R7208)
Outdoor temperature thermistor
Guard net
(R7209)

Removal of Outer Panels / Fan Motor Si001071
8Removal Procedure
4Remove the 4 screws
on the right side panel.
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
(R7210)
Right side panel
(R7211)
(R7212)
(R7213)
Hook

Si001071 Removal of Electrical Box
Removal Procedure 9
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. Remove the electrical
box.
Preparation
Remove the panels and
disconnect the connector for
the fan motor according to
“Removal of Outer Panels /
Fan Motor”.
1Disconnect the 2
connectors for the
reactor.
2Cut the clamp.
3Disconnect the
connector for the
compressor [S30].
When reassembling, coil the
excessive lead wire and
hang the loop on the hook.
(R7214)
(R7215)
(R7216)
[S30]

Removal of Electrical Box Si001071
10 Removal Procedure
4Disconnect the
connector for overload
protector [S40].
5Disconnect the
connector for electronic
expansion valve coil
[S20].
6Disconnect the
connector for four way
valve coil [S80].
7Release the discharge
pipe thermistor.
Be careful not to lose the clip
for the thermistor.
Step Procedure Points
(R7217)
[S40]
(R7218)
[S20]
(R7219)
[S80]
(R0267)
Discharge pipe thermistor
(R12279)
Clip

Si001071 Removal of Electrical Box
Removal Procedure 11
8Cut the clamp.
9Pull out the outdoor
heat exchanger
thermistor.
Be careful not to lose the clip
for the thermistor.
10 Lift and remove the
electrical box.
Step Procedure Points
(R7221)
(R7222)
Outdoor heat exchanger
thermistor
(R3264)
Clip
(R7223)
Electrical Box

Removal of PCB Si001071
12 Removal Procedure
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
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.
(R7255)
(R7256)
Terminal
board
(R7257)
Earth
terminal

Si001071 Removal of PCB
Removal Procedure 13
4Remove the 4 screws.
5
6
Unfasten the 3 hooks
on the upper side.
Lift and pull out the
control PCB.
[S20]: electronic expansion
valve coil
[S30]: compressor
[S40]: overload protector
[S70]: fan motor
[S80]: four way valve coil
[S90]: thermistors
Step Procedure Points
(R7258)
Screw
(R7259)
(R7260)
[S80][S20]
[S90][S30] [S40]
[S70]

Removal of Reactor / Partition Plate Si001071
14 Removal Procedure
4. 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.
(R3266)
Reactor
(R3267)
Partition plate
(R3268)

Si001071 Removal of Reactor / Partition Plate
Removal Procedure 15
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
(R3269)
(R3270)
Hook

Removal of Sound Blanket Si001071
16 Removal Procedure
5. Removal of Sound Blanket
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1Remove the sound
blanket (top).
Since the piping ports are
torn easily, remove the
sound blanket carefully.
2Untie the string and
open the sound blanket
(outer).
3Lift and remove the
sound blanket (outer).
(R11884)
Sound blanket
(top)
(R7229)
Sound blanket
(R7230)

Si001071 Removal of Sound Blanket
Removal Procedure 17
4Pull the sound blanket
(inner) out.
5Pull the sound blanket
(bottom) out.
Step Procedure Points
(R11887)
Sound blanket
(inner)
Sound blanket
(bottom)
(R11888)

Removal of Four Way Valve Si001071
18 Removal Procedure
6. Removal of Four Way Valve
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1Pull out the electronic
expansion valve coil.
2Remove the terminal
cover.
3Disconnect the lead
wires of the
compressor.
(R7233)
Electronic
expansion
valve coil
(R7234)
Terminal cover
V
W
U
(R7235)
Red (U)
Yellow (V) Blue (W)