Daikin RKD24HV2S User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
24000/28000 Btu/h Class
Outdoor Unit
Inverter
Pair Type
Si001168

Service Manual
Removal Procedure
Outdoor Unit
Applicable Models
zCooling Only
RKD24HV2S
RKD28HV2S

Si001168
Removal Procedure 1
Table of Contents
1. Removal of Outer Panels ........................................................................2
2. Removal of Electrical Box .....................................................................15
3. Removal of PCBs..................................................................................20
4. Removal of Fan Motor...........................................................................25
5. Removal of Electronic Expansion Valve Coil / Thermistors ..................26
6. Removal of Reactor ..............................................................................28
7. Removal of Sound Blankets..................................................................29
8. Removal of Compressor .......................................................................31
Note: The illustrations may be slightly different depending on the model.

Removal of Outer Panels Si001168
2Removal Procedure
1. Removal of Outer Panels
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1. Appearance features
2. Remove the suction grille. The hooks are secured in
the clearances of the
outdoor heat exchanger fins.
1Unfasten the 2 hooks at
the bottom.
2Slide the suction grille
downward to unfasten
the 3 top hooks.
3Remove the suction
grille.
(R6182)
Hook
Rear side Suction grille
(R16916)
Hook
(R16917)
(R6372)

Si001168 Removal of Outer Panels
Removal Procedure 3
3. Remove the top panel.
1Remove the 4 screws
on the back and the
screw on the left side.
2Remove the 2 screws
on the front and the
screw on the right side
panel.
3Lift the top panel and
remove it.
Step Procedure Points
(R6373)
Top panel
(R17070)
Right side
panel
(R6189)

Removal of Outer Panels Si001168
4Removal Procedure
4. Remove the right side
panel.
1Remove the 5 screws.
2Slide the right side
panel downward to
unfasten the 2 hooks on
the rear side.
Step Procedure Points
(R17071)
Right side panel
(R6191)
(R17072)
Hook
Hook
(R17073)

Si001168 Removal of Outer Panels
Removal Procedure 5
3Remove the right side
panel.
5. Remove the front panel
(2)
+:This screw is M5(3) × 16
1Remove the 2 screws.
2Slide the front panel (2)
downward to unfasten
the hooks.
Step Procedure Points
(R6194)
(R17096)
Front Panel (2)
+
Front
Panel (1)
(R6197)

Removal of Outer Panels Si001168
6Removal Procedure
3Remove the front panel
(2).
6. Remove the front panel
(1)
Remove the discharge grille
and the outdoor fan before
removing the front panel (1).
1Remove the 4 screws
on the discharge grille.
2Pull the bottom of the
discharge grille.
3Slide the discharge
grille downward to
unfasten the 2 hooks at
the top.
Step Procedure Points
(R17074)
Hook
(R16875)
Discharge grille
Front
Panel (1)
(R16876)
(R16877)
Hook

Si001168 Removal of Outer Panels
Removal Procedure 7
4Remove the discharge
grille.
5Remove the nut of the
outdoor fan.
Nut size : M8
6Remove the 2 screws
on the partition plate
(1).
Step Procedure Points
(R6204)
(R16878)
Outdoor fan
13 mm
(R12301)
(R16879)
Partition plate (1)

Removal of Outer Panels Si001168
8Removal Procedure
7Remove the screw at
the bottom left of the
front.
8Remove the screw at
the bottom of the left
side.
9Remove the screw at
the bottom of the rear
side.
Step Procedure Points
(R16880)
(R6208)
(R6209)

Si001168 Removal of Outer Panels
Removal Procedure 9
10 Lift the front panel (1). The front panel (1) has a
hook on its front.
11 Remove the front panel
(1).
Be sure to detach the front
panel (1) carefully so as not
to deform it.
Step Procedure Points
(R16881)
Hook
(R16882)

Removal of Outer Panels Si001168
10 Removal Procedure
7. Remove the rear panel.
1Remove the screw on
the partition plate (2).
2Slide the partition plate
(2) to the left and
remove it.
Step Procedure Points
(R16883)
Rear panel
Partition
plate (2)
(R16884)
Hook

Si001168 Removal of Outer Panels
Removal Procedure 11
3Remove the 3 screws
on the wire fixing plate.
4Remove the wire fixing
plate and the insulation.
Remove the screws of the
terminal board and earth
wire to disconnect the
connection wires.
Step Procedure Points
(R16885)
(R16886)
Wire
fixing plate
Insulation

Removal of Outer Panels Si001168
12 Removal Procedure
5Release the holder of
the outdoor
temperature thermistor.
The holder is secured in the
clearances of the outdoor
heat exchanger fins.
6Release the harness of
the outdoor
temperature thermistor
from the groove.
7Remove the 3 screws
on the rear panel.
Step Procedure Points
(R16887)
Holder
(R17075)
Groove
Thermistor
(R16888)
Rear panel

Si001168 Removal of Outer Panels
Removal Procedure 13
8Remove the screw on
the bottom frame.
9Remove the screw on
the stop valve mounting
plate.
10 Lift the rear panel
upward to unfasten the
2 hooks.
Step Procedure Points
(R17097)
(R17098)
Stop valve mounting plate
(R17099)
Hook

Removal of Outer Panels Si001168
14 Removal Procedure
11 Remove the rear panel.
Step Procedure Points
(R17100)

Si001168 Removal of Electrical Box
Removal Procedure 15
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
1 Remove the screw on
the stop valve mounting
plate.
2 Remove the screw on
the partition plate (1).
3 Remove the 2 screws
to detach the earth
wires.
(R16889)
Stop valve
mounting
plate
(R16890)
Partition
plate (1)
(R17076)
Earth wire

Removal of Electrical Box Si001168
16 Removal Procedure
4 Open the cover of the
electrical box.
Unfasten the four hooks. The
hooks are marked with W.
5 Disconnect the fan
motor connector [S70].
6 Release the fan motor
lead wire.
Step Procedure Points
(R17078)
(R17077)
W
(R6227)
[S70]
(R6228)

Si001168 Removal of Electrical Box
Removal Procedure 17
7 Disconnect the
connector for the
electronic expansion
valve coil [S20].
When reassembling, insert
the clamps of the thermistor
ASSY into the hole as below.
8 Disconnect the
connector for the
thermistors [S90].
9 Disconnect the
connector for the
overload protector (OL)
[S40].
Step Procedure Points
(R16893)
[S20]
(R17101)
[S90]
Outdoor temperature
thermistor, outdoor heat
exchanger thermistor
Discharge pipe
thermistor
Thermistor
ASSY
(R17095)
(R17102)
[S40]

Removal of Electrical Box Si001168
18 Removal Procedure
10 Release the thermistor
harnesses from the
hook on the bottom of
the electrical box and
then pull out the clamp.
When reassembling, insert
the clamp of the reactor
harness into the hole as
below.
11 Disconnect the 2
connectors for the
reactor.
12 Pull out the 2 clamps to
detach the OL lead wire
and the compressor
lead wire from the
partition plate (1).
Step Procedure Points
(R17103)
Clamp
Hook
(R17104)
Reactor
harness
(R17094)
(R17105)