Daikin RKS09JV2S User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
2.0/2.2/2.5/2.8/3.5/3.6/4.2 kW Class
9000/12000/15000 Btu/h Class
Outdoor Unit
Inverter
Pair Type
Si001353EB

Service Manual
Removal Procedure
Outdoor Unit
zCooling Only zHeat Pump
RKS09JV2S RXJ20LV1B
RKS12JV2S RXJ25LV1B
RKS15JV2S RXJ35LV1B
RKS42JVMG RXJ25NVLT
RXJ25NVMV
RXJ35NVMV
RXM20LV1B
RXM25LV1B
RXM35LV1B
RXV22NVLT
RXV28NVLT
RXV36NVLT

Si001353EB
Removal Procedure 1
Table of Contents
1. Outer Panels / Fan Motor........................................................................2
2. Electrical Box ..........................................................................................7
3. PCBs .......................................................................................................9
4. Reactor / Partition Plate ........................................................................12
5. Sound Blankets .....................................................................................13
6. Thermistor ASSY ..................................................................................14
7. Four Way Valve.....................................................................................15
8. Compressor...........................................................................................18
Note: The illustrations may be slightly different depending on the model.
The illustrations are for heat pump models as representative.

Outer Panels / Fan Motor Si001353EB
2Removal Procedure
1. Outer Panels / Fan Motor
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 panels. The stop valve cover is
united with the shield plate.
When reassembling, make
sure to fit the 5 hooks.
1
2
Remove the screw of
the stop valve cover.
Pull down the stop
valve cover and remove
it.
3
4
5
Remove the 3 screws
and lift the top panel.
Remove the drip proof
plate.
Remove the 4 screws
and remove the
discharge grille.
The discharge grille has 4
hooks.
6 Remove the 8 screws
of the front panel.
Stop
valve
cover
(R17214)
(R17767)
Discharge grille
Drip proof plate
Top panel
(R12570)
(R18657)
Front panel

Si001353EB Outer Panels / Fan Motor
Removal Procedure 3
7 Unfasten the hooks.
Pull and remove the
front panel.
The front panel has 4 hooks.
2. Remove the fan motor. Nut size: M6
1 Remove the nut of the
outdoor fan.
2 Remove the outdoor
fan.
When reassembling, align
the mark of the outdoor
fan with the D-cut section of
the motor shaft.
3 Release the outdoor
temperature thermistor.
Step Procedure Points
(R12572)
Hook
Outdoor fan (R15669)
10 mm
(0.39 inch)
(R18954)
(R12574)
D-cut
(R11829)
Outdoor temperature
thermistor

Outer Panels / Fan Motor Si001353EB
4Removal Procedure
4 Disconnect the
connector [S70].
[S70]: fan motor
5 Release the fan motor
lead wire from the hook.
6 Remove the screw of
the fan motor fixing
frame.
Step Procedure Points
[S70]
(R15680)
Fan motor
lead wire
(R12576)
(R12577)
Fan motor fixing frame

Si001353EB Outer Panels / Fan Motor
Removal Procedure 5
7 Lift and remove the fan
motor fixing frame.
When reassembling, fit the 2
lower hooks into the bottom
frame.
8 Release the fan motor
lead wire from the 2
hooks.
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.
9 Remove the 4 screws
and remove the fan
motor.
3. Remove the right side
panel.
1 Remove the 7 screws
on the right side panel.
Step Procedure Points
(R12578)
(R7206)(R7206)
(R12579)
Lead wire Outdoor fan
(R12215)
(R12580)
Fan motor
(R15670)
Right side panel

Outer Panels / Fan Motor Si001353EB
6Removal Procedure
2 Unfasten the hook on
the rear side.
When reassembling, make
sure to fit the hook.
3 Lift up the right side
panel and remove it.
When reassembling, make
sure to fit the hook.
Step Procedure Points
(R12584)
(R12585)
Hook

Si001353EB Electrical Box
Removal Procedure 7
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 Disconnect the 2
connectors for the
reactor.
When reassembling, you
can connect the 2
connectors for the reactor in
either way regardless of the
color.
When reassembling,
connect the connectors in
the following order.
(1) [S40]
(2) Relay connector for
compressor
(3) Reactor
(4) [S20]
(5) [S80]
(6) [S90]
2 Disconnect the relay
connector for the
compressor.
3 Disconnect the
connector [S90].
[S90]: thermistor
(R12586)
(R15671)
[S90]
(R15672)

Electrical Box Si001353EB
8Removal Procedure
4 Disconnect the
connector [S40].
[S40]: overload protector
5 Disconnect the
connector [S20].
[S20]: electronic expansion
valve coil
6 Disconnect the
connector [S80].
[S80]: four way valve coil
Cooling only models have no
harness for [S80].
7 Lift and remove the
electrical box.
When reassembling, make
sure that the hook of the
electrical box is securely
fastened on the partition
plate.
Step Procedure Points
[S40]
(R12589)
[S20]
(R12590)
[S80]
(R17144)
(R13179)
Electrical box
Hook
(R22520)

Si001353EB PCBs
Removal Procedure 9
3. PCBs
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 main PCB. You can remove the main
PCB after you disconnect
the lead wires on the
terminal board without
removing the electrical box.
1 Cut the 3 clamps.
2 Release the harnesses
from the hooks.
3 Disconnect the
connector [S10].
[S10]: filter PCB
4 Disconnect the
connector [HL3].
[HL3]: filter PCB
(R12594)
(R12595)
(R12596)
[S10]
(R12598)
[HL3]

PCBs Si001353EB
10 Removal Procedure
5 Disconnect the
connector [HN3].
[HN3]: filter PCB
6 Remove the 6 screws.
7
8
Unfasten the 2 hooks
on the lower side.
Lift and pull out the
main PCB.
The electrical box also has 2
hooks on the upper side.
When reassembling, be sure
to fit all the 4 hooks.
2. Remove the filter PCB.
1 Remove the 2 screws
and release the earth /
ground wires.
Step Procedure Points
(R12599)
[HN3]
(R12600)
(R22536)
Hook
Hook
Earth / ground wire
(R22533)

Si001353EB PCBs
Removal Procedure 11
2 Disconnect the
connectors from the
terminal board.
1 : black, back
2:white,back
3 : red, front
: yellow / green, back
3 Release the harnesses
from the hook.
4 Release the harnesses
from the hook.
5
6
Remove the screw.
Unfasten the 2 hooks
and remove the filter
PCB.
Step Procedure Points
(R22534)
(R22535)
Hook
(R12607)
Hook
(R18658)
Filter PCB
Hook

Reactor / Partition Plate Si001353EB
12 Removal Procedure
4. Reactor / Partition Plate
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 reactor.
1
2
Remove the screw and
slide the reactor to the
left to unfasten the
hook.
Remove the reactor.
2. Remove the partition
plate.
1 Remove the 2 screws.
2 The partition plate has
2 hooks on the lower
side. Lift and pull the
partition plate and
remove it.
When reassembling, fit the 2
lower hooks into the bottom
frame.
Reactor
(R12611)
(R12613)
Partition plate
(R12614)
Hook

Si001353EB Sound Blankets
Removal Procedure 13
5. 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 Untie the string and
open the sound blanket
(outer).
Since the piping ports are
torn easily, remove the
sound blanket carefully.
2 Pull out the sound
blanket (outer).
3 Remove the sound
blanket (top).
4 Pull out the sound
blanket (inner).
(R15888)
Sound blanket (outer)
(R12212)
(R12617)
Sound blanket
(top)
(R12618)
Sound blanket (inner)

Thermistor ASSY Si001353EB
14 Removal Procedure
6. Thermistor ASSY
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1 Release the discharge
pipe thermistor.
Be careful not to lose the
fixture for the thermistor.
2 Pull out the outdoor
heat exchanger
thermistor.
Be careful not to lose the clip
for the thermistor.
3 Cut the clamp and
remove the thermistor
ASSY.
Discharge pipe thermistor
(R12619)
Fixture
(R22337)
Outdoor heat exchanger thermistor (R12620)
Clip
(R3264)
(R12621)
Thermistor
ASSY

Si001353EB Four Way Valve
Removal Procedure 15
7. Four Way Valve
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Be careful not to get yourself burnt with the pipes and other parts that are heated by
the gas brazing machine.
If the refrigerant gas leaks during work, ventilate the room. (If the refrigerant gas is
exposed to flames, toxic gas may be generated.)
Caution From the viewpoint of global environment protection, do not discharge the refrigerant
gas in the atmosphere. Make sure to collect all the refrigerant gas.
Cautions for restoration
1. Restore the piping by non-oxidation brazing.
2. It is required to prevent the carbonization of the oil inside the four way valve and the
deterioration of the gaskets affected by heat. (Keep below 120°C (248°F).) For the sake of
this, wrap the four way valve with wet cloth and provide water so that the cloth does not
dry.
Note Before working, make sure that the refrigerant gas is empty in the circuit.
Be sure to apply nitrogen replacement when heating up the brazed part.
Do not use a metal saw for cutting pipes by all means because the sawdust comes into
the circuit.
When withdrawing the pipes, be careful not to pinch them firmly with pliers. The pipes
may get deformed.
Provide a protective sheet or a steel plate so that the brazing flame cannot influence
peripheries.
Be careful so as not to burn the compressor terminals, the name plate, the outdoor
heat exchanger fin.
In case of difficulty with gas brazing machine.
1. Disconnect the brazed part where is easy to disconnect and restore.
2. Cut pipes on the main unit with a tube cutter in order to make it easy to disconnect.
Step Procedure Points
1 Pull out the electronic
expansion valve coil.
Cooling only models have no
four way valve.
(R7233)
Electronic
expansion
valve coil

Four Way Valve Si001353EB
16 Removal Procedure
2 Remove the terminal
cover.
3 Disconnect the lead
wires of the compressor
and the overload
protector.
4 Remove the screw and
remove the four way
valve coil.
Step Procedure Points
(R7234)
Terminal cover
V
W
U
(R20182)
Red (U)
Yellow (V) Blue (W)
Overload
protector
(R20193)
Four way valve coil

Si001353EB Four Way Valve
Removal Procedure 17
5 Remove the sheets of
putty.
6 Heat up the 4 brazed
parts and withdraw the
piping with pliers.
Step Procedure Points
(R7248)
(R20183)
Four way valve
(R7250)

Compressor Si001353EB
18 Removal Procedure
8. Compressor
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Be careful not to get yourself burnt with the pipes and other parts that are heated by
the gas brazing machine.
If the refrigerant gas leaks during work, ventilate the room. (If the refrigerant gas is
exposed to flames, toxic gas may be generated.)
Since it may happen that the refrigerant oil in the compressor catches fire, prepare wet
cloth so as to extinguish fire immediately.
Caution From the viewpoint of global environment protection, do not discharge the refrigerant
gas in the atmosphere. Make sure to collect all the refrigerant gas.
Restore the piping by non-oxidation brazing.
Note Before working, make sure that the refrigerant gas is empty in the circuit.
Be sure to apply nitrogen replacement when heating up the brazed part.
Do not use a metal saw for cutting pipes by all means because the sawdust comes into
the circuit.
When withdrawing the pipes, be careful not to pinch them firmly with pliers. The pipes
may get deformed.
Provide a protective sheet or a steel plate so that the brazing flame cannot influence
peripheries.
Be careful so as not to burn the compressor terminals, the name plate, the outdoor
heat exchanger fin
In case of difficulty with gas brazing machine.
1. Disconnect the brazed part where is easy to disconnect and restore.
2. Cut pipes on the main unit with a tube cutter in order to make it easy to disconnect.
Step Procedure Points
1 Remove the terminal
cover.
(R7234)
Terminal cover