Daikin RKS46LVMA User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
3.5/4.5/4.6/5.0/6.0 kW Class
15000/18000 Btu/h Class
Outdoor Unit
Inverter
Pair Type
Si001163EA

Service Manual
Removal Procedure
Outdoor Unit
zCooling Only zHeat Pump
RKS46LVMA RXS15LVJU
RKS50LVMA RXS18LVJU
RKS60LVMA
RXS46LVMA
RXS50LVMA
RXS60LVMA
RXS35LAVMA
RXS50LAVMA
RXS35RV1A
RXS45RV1A
RXS50RV1A

Si001163EA
Removal Procedure 1
Table of Contents
1. Outer Panels ...........................................................................................2
2. Outdoor Fan / Fan Motor.........................................................................5
3. Electrical Box ..........................................................................................8
4. PCBs .....................................................................................................16
5. Sound Blankets / Thermistors ...............................................................23
6. Four Way Valve.....................................................................................26
7. Electronic Expansion Valve...................................................................28
8. Compressor...........................................................................................30
Note: The illustrations may be slightly different depending on the model.
The illustrations are for heat pump models as representative.

Outer Panels Si001163EA
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 Remove the 4 screws,
and then the top panel.
Take care not to cut your
finger by the fins of the
outdoor heat exchanger.
2 Remove the 4 screws,
and then the discharge
grille.
Slide the discharge grille
upward to remove it.
When reassembling, make
sure the 4 hooks are
securely fastened.
Top panel
(R16754)
Discharge grille
(R16755)
(R24294)

Si001163EA Outer Panels
Removal Procedure 3
3 Remove the 6 screws
of the front panel.
4 Unfasten the right side
hooks.
5 Unfasten the left side
hooks and remove the
front panel.
When reassembling, fit the
left side of the front panel
first.
Step Procedure Points
Front panel
(R16757)
(R16759)
(R16760)

Outer Panels Si001163EA
4Removal Procedure
6 Remove the screw of
the stop valve cover.
7
8
Pull down the stop
valve cover to unfasten
the hooks.
Remove the stop valve
cover.
When reassembling, make
sure the 6 hooks are
securely fastened.
Step Procedure Points
Stop valve cover
(R16761)
(R16762)
(R24295)

Si001163EA Outdoor Fan / Fan Motor
Removal Procedure 5
2. Outdoor Fan / 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 shield
plate.
2 Disconnect the
connector [S70].
[S70]: fan motor
3 Release the clamp that
fixes the fan motor lead
wire’s ferrite core to the
partition plate.
Pinch the clamp with pliers
and push from the back to
remove.
Shield plate
(R16785)
(R16951)
[S70]
Ferrite core
Back view Partition plate
(R24378)
(R24296)

Outdoor Fan / Fan Motor Si001163EA
6Removal Procedure
4 Release the fan motor
lead wire from the
groove and from the 2
hooks on the partition
plate.
5 Remove the nut of the
outdoor fan.
Nut size: M6
6 Remove the outdoor
fan.
When reassembling, align
the mark of the outdoor
fan with the D-cut section of
the motor shaft.
Step Procedure Points
(R16796)
Hook
Hook
(R24379)
Outdoor fan
(R16787)
10 mm
(0.39 inch)
(R18954)
(R16788)

Si001163EA Outdoor Fan / Fan Motor
Removal Procedure 7
7 Remove the 2 screws
of the fan motor fixing
frame.
8
9
Pull up the fan motor
fixing frame to unfasten
the 2 hooks at the
bottom.
Remove the fan motor
fixing frame.
When reassembling, make
sure the 2 hooks are
securely fastened.
10 Open the hook and
release the fan motor
lead wire.
When reassembling, make
sure the hook is securely
fastened.
11 Remove the 4 screws,
and then the fan motor.
Step Procedure Points
Fan motor fixing frame
(R24380)
(R24381 )
(R20314)
Hook
(R24297)
Fan motor
(R16792)

Electrical Box Si001163EA
8Removal Procedure
3. 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 Remove the 2 screws
of the protection plate.
2 Remove the protection
plate.
3
4
Remove the 3 screws,
and then the wire
fixture.
Remove the 7 screws,
and then the connecting
wire and the power
supply wire.
For U.S. models
When reassembling, pass
the connecting wires through
the conduit and secure them
with a lock nut.
5 Remove the 2 screws,
and then the earth/
ground wire.
(R24298)
Protection plate
(R24299)
(R24300)
Power supply wire
Connecting wire
Lock nut
Conduit
mounting plate
Conduit 1/2 inch
(21.3mm)
(R16825)
(R24301)
Earth/ground wire

Si001163EA Electrical Box
Removal Procedure 9
6 Pull out the outdoor
temperature thermistor.
7 Remove the 4 screws
of the right side panel.
8 Unfasten the 3 hooks
and remove the right
side panel.
When reassembling, make
sure the upper hook and the
2 lower hooks are securely
fastened.
Step Procedure Points
(R16794)
Outdoor temperature
thermistor
Right side panel (R16957)
Hook
(R16823)
Hook
(R16824)

Electrical Box Si001163EA
10 Removal Procedure
9 Cut the clamp.
10 Pull out the outdoor
heat exchanger
thermistor.
Be careful not to lose the clip
for the thermistor.
11 Remove the clamp, and
then disconnect the
connector [S70].
[S70]: fan motor
Step Procedure Points
(R16766)
Outdoor
heat
exchanger
thermistor
(R16819)
Clip
(R3264)
(R24302)
[S70]
Ferrite core
Clamp

Si001163EA Electrical Box
Removal Procedure 11
12 Disconnect the
connector [S40].
[S40]: overload protector
13 Pull out the clamp.
14 Remove the clamp, and
then disconnect the
connector [S20].
[S20]: electronic expansion
valve coil
15 Pull out the clamp at the
bottom of the electrical
box.
Step Procedure Points
[S40]
(R16782)
(R16803)
(R24303)
[S20]
Clamp
(R16767)

Electrical Box Si001163EA
12 Removal Procedure
16 Remove the harness
from the right wire
saddle.
17
18
Disconnect the
connector [S80].
Pull out the clamp.
[S80]: four way valve coil
The cooling only models do
not have the harness for
[S80].
When reassembling, insert
the clamps of harnesses as
shown below.
When reassembling,
connect the connectors in
the following order:
(1) [S80]
(2) [S20]
(3) [S40]
(4) [S70]
19 Disconnect the relay
connector for the
compressor.
20 Pull out the clamp from
the partition plate.
Step Procedure Points
Right wire saddle
(R24304)
(R24305)
[S80]
Clam
p
[S40] [S80] [S20]
(R14363)
(R14312)
(R24306)

Si001163EA Electrical Box
Removal Procedure 13
21 Disconnect the
connector [S90].
[S90]: thermistors
22 Pull out the clamp. When reassembling, pass
the thermistor harness under
the harnesses (HL2: blue,
HN2: white) from the filter
PCB.
When reassembling, insert
the clamp as shown below.
23 Remove the harnesses
from the left wire
saddle.
Step Procedure Points
(R16806)
[S90]
(R24382)
(R24308)
Thermistor
harnesses
Top view
Left wire saddle (R24307)

Electrical Box Si001163EA
14 Removal Procedure
24 Pull out the 3 clamps. When reassembling, make
sure the 2 clamps are
securely fastened to the
bottom of the electrical box.
Step Procedure Points
(R16768)
(R16749)
(R16769)
(R16770)

Si001163EA Electrical Box
Removal Procedure 15
25 Remove the screw of
the electrical box.
26 Remove the electrical
box.
Step Procedure Points
(R16771)
(R16772)
Electrical box

PCBs Si001163EA
16 Removal Procedure
4. 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. [S12]: filter PCB
1 Disconnect the
connector [S12] and
pull out the clamp.
2 Disconnect the
connector [S10].
[S10]: filter PCB
3 Pull out the clamp. When reassembling, make
sure the compressor
harness clamp is securely
fastened.
(R16959)
[S12] Main PCB
(R16808)
[S10]
(R16775)
(R24309)
Compressor harness
(red, blue, yellow)
Top view

Si001163EA PCBs
Removal Procedure 17
4 Disconnect the
connectors [HN3] and
[HL3].
[HL3] [HN3]: filter PCB
5 Pull out the clamp. When reassembling, make
sure the clamp is securely
fastened as shown below.
6 Remove the 2 upper
screws.
Step Procedure Points
[HN3]: white
[HL3]: blue
(R16809)
(R16810)
(R24310)
Harnesses from [HL2]
(blue) and [HN2] (white)
Top view
(R16811)

PCBs Si001163EA
18 Removal Procedure
7 Remove the screw.
8 Unfasten the 2 hooks at
the bottom.
9 Remove the main PCB
ASSY.
Step Procedure Points
(R16812)
(R24311)
Hook
Bottom view
(R16813)
Main PCB ASSY