Daikin RKS71FV1B User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
7.1/8.0/9.0 kW Class
Outdoor Unit
Inverter / Non-Inverter
Pair Type
Si00-775

Service Manual
Removal Procedure
Outdoor Unit
zCooling Only zHeat Pump
RKS71FV1B RXS71FV1B
RKS71FVMA RXS71FVMA
RXS80FVMA
RXS90FVMA
RYN71FV1A

Si00-775
Removal Procedure 1
Table of Contents
1. Removal of Outer Panels ........................................................................2
2. Removal of Electrical Box .....................................................................13
3. Removal of PCBs..................................................................................17
4. Removal of Fan Motor...........................................................................20
5. Removal of Coils / Thermistors .............................................................21
6. Removal of Sound Blankets..................................................................24
7. Removal of Compressor .......................................................................27
Note: The illustrations may be slightly different depending on the model.
The illustrations are for heat pump models as representative.

Removal of Outer Panels Si00-775
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 The design of discharge
grille is different depending
on the model.
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 first.
2Slide the suction grille
downward to unfasten
the 3 top hooks.
3Remove the suction
grille.
(R16722)
Hook
Rear side Suction grille
(R16916)
Hook
(R16917)
(R6372)

Si00-775 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
Right
side
panel
(R16723)
(R16724)

Removal of Outer Panels Si00-775
4Removal Procedure
4. Remove the front panel
(2).
+:This screw is M5(3) × 16
1Remove the 5 screws.
2Slide the front panel (2)
downward to unfasten
the hook.
3Remove the front panel
(2).
Step Procedure Points
(R16725)
+
Front Panel (2)
(R16726)
Hook
(R16727)

Si00-775 Removal of Outer Panels
Removal Procedure 5
5. Remove the right side
panel.
1Remove the 2 screws.
Slide the right side
panel downward to
unfasten the 2 hooks on
the rear side.
2Remove the right side
panel.
Step Procedure Points
(R16728)
Right side panel
Hook
(R13521)
Hook
(R16729)
(R16730)

Removal of Outer Panels Si00-775
6Removal Procedure
6. Remove the front panel
(1).
Remove the discharge grille
and the outdoor fan first to
remove 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.
4Remove the discharge
grille.
Step Procedure Points
Discharge grille
(R16731)
Front
Panel (1)
(R16732)
Hook
(R16734)
(R16735)

Si00-775 Removal of Outer Panels
Removal Procedure 7
5Remove the nut of the
outdoor fan.
Nut size : M8
6Remove the 2 screws
on the partition plate
(1).
7Remove the screw at
the bottom left of the
front.
8Remove the screw at
the bottom of the left
side.
Step Procedure Points
Outdoor fan
(R16736)
13 mm
(R12301)
(R16737)
Partition plate (1)
(R16738)
(R16739)

Removal of Outer Panels Si00-775
8Removal Procedure
9Remove the screw at
the bottom of the rear
side.
10 Lift the front panel (1) to
unfasten the hook.
11 Remove the front panel
(1).
Be sure to detach the front
panel (1) carefully so as not
to deform it.
Step Procedure Points
(R6394)
Hook
(R16740)
(R16741)
(R6995)

Si00-775 Removal of Outer Panels
Removal Procedure 9
7. Remove the rear panel.
1Remove the screw on
the partition plate (2).
2Slide the partition plate
(2) to the left and
remove it.
3Remove the 3 screws
on the wire fixing plate.
Step Procedure Points
Rear panel
Partition
plate (2)
(R16742)
Hook
(R16743)
(R16744)

Removal of Outer Panels Si00-775
10 Removal Procedure
4Remove the wire fixing
plate and the insulation.
5Remove the 7 screws
of the terminal board
and earth wires.
Detach the connecting
wire and the power
supply wire.
6Release the holder of
the outdoor
temperature thermistor.
The holder is secured in the
clearances of the outdoor
heat exchanger fins.
Step Procedure Points
Wire fixing plate
Insulation
(R16745)
(R16746)
Terminal board
Connecting wire Power supply wire
Holder
(R11151)

Si00-775 Removal of Outer Panels
Removal Procedure 11
7Release the harness of
the outdoor
temperature thermistor
from the groove.
8Remove the 3 screws
on the rear panel.
9Remove the screw on
the bottom frame.
Step Procedure Points
Thermistor
(R14991)
Rear panel
(R16699)
(R16700)

Removal of Outer Panels Si00-775
12 Removal Procedure
10 Remove the screw on
the stop valve mounting
plate.
11 Lift the rear panel
upward to unfasten the
2 hooks.
12 Remove the rear panel.
Step Procedure Points
Stop valve mounting plate
(R16701)
HookHook
(R16702)
(R16703)

Si00-775 Removal of Electrical Box
Removal Procedure 13
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.
Electrical box
Stop valve
mounting plate
(R16605)
Partition
plate (1)
(R16606)
Earth wire
(R17112)

Removal of Electrical Box Si00-775
14 Removal Procedure
4Disconnect the
connector for the fan
motor [S70].
5Release the fan motor
lead wire from the 5
hooks.
+: When reassembling, do not
use these 2 hooks.
6Disconnect the
connectors of the front
side.
[S20]: electronic expansion
valve coil
[S40]: overload protector
[S80]: four way valve coil
[S90]: thermistors
The cooling only models do
not have the harness for
[S80].
When reassembling, insert
the clamp of the thermistor
ASSY harness into the hole
as below.
When reassembling, insert
the clamp of the electronic
expansion valve coil harness
into the hole as below.
Step Procedure Points
(R7008)
[S70]
+
Fan motor
lead wire
(R9468)
(R5275)
[S40] [S20] [S90] [S80]
Thermistor ASSY harness
(R17142)
Electronic expansion
valve coil harness
(R17141)

Si00-775 Removal of Electrical Box
Removal Procedure 15
7 Release the thermistor
harness from the hook
at the bottom of
electrical box.
8 Pull out the clamp of the
thermistor harness from
the hole of the electrical
box.
9 The compressor lead
wire is fixed on the
partition plate (1) with a
clamp.
10 Release the clamp of
the compressor relay
harness with pliers.
Step Procedure Points
Fixing position for the
thermistor harness
Hook
(
R16647
)
When reassembling, insert
the clamp into the small hole.
Clamp
(R16704)
Clamp
(R6423)

Removal of Electrical Box Si00-775
16 Removal Procedure
11 Disconnect the relay
connector for the
compressor.
12 Slide the electrical box
to the left to unfasten
the hook on the right
side of the box.
13 Lift up the electrical box
and remove it.
Step Procedure Points
(R6469)
(R16705)
Hook
(R16706)

Si00-775 Removal of PCBs
Removal Procedure 17
3. Removal of PCBs
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
connectors [S52]
[S102] from the service
monitor PCB.
Preparation
Remove the electrical box
according to the "Removal of
Electrical Box".
2Detach the 4 clamps
with pliers and remove
the service monitor
PCB.
3Remove the screws of
the terminal board and
the earth wire.
Service monitor PCB
[S52] [S102]
(R16707)
Clamp
(R16708)
(R17030)
Terminal board
Earth wire

Removal of PCBs Si00-775
18 Removal Procedure
4Unfasten the hook on
the right.
5Open the terminal
board.
6Disconnect the
harnesses.
1: Black
2: White
3: Red
L1: Black
L2: Brown
N1: White
N2: Blue
7Disconnect the 2
harnesses for the
reactor [HR1] [HR2].
[HR1] : White
[HR2] : Blue
The harness for [HR2] has a
ferrite core.
Step Procedure Points
(R5283)
(R16710)
(R16711)
N2
N1
L1
321
L2
[HR2] Ferrite core[HR1]
(R5286)