Daikin Si001554EC User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Outdoor Unit
Inverter
Pair Type
9000/12000 Btu/h Class
Si001554EC

Service Manual
Removal Procedure
Outdoor Unit
Cooling Only Heat Pump
RK09NMVJU RX09NMVJU
RK12NMVJU RX12NMVJU
RKN09NMVJU RX09QMVJU
RKN12NMVJU RX12QMVJU
RX09RMVJU
RX12RMVJU
RX09RMVJU9
RX12RMVJU9
RXN09NMVJU
RXN12NMVJU
RXL09QMVJU

Si001554EC
Removal Procedure 1
Table of Contents
1. Outer Panels ...........................................................................................2
2. Outdoor Fan / Fan Motor.........................................................................3
3. Electrical Box / PCB ................................................................................5
4. Thermistor ASSY ..................................................................................10
5. Sound Blankets .....................................................................................14
6. Reactor / Electronic Expansion Valve Coil / Partition Plate ..................15
7. Four Way Valve.....................................................................................17
8. Compressor...........................................................................................19
Note: The illustrations may be slightly different depending on the model.
The illustrations are for heat pump models as representative.

Outer Panels Si001554EC
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
2
Remove the 3 screws
and remove the top
panel.
Remove the 4 screws
of the front panel.
3
4
Unfasten the 2 left side
hooks, and then the 2
right side hooks.
Remove the front panel.
5 Unfasten the 2 hooks
on the top and remove
the discharge grille.
Front panel
Top panel
(R22821)
Hook
(R21605)
Hook
Discharge grille
Front panel
(R21606)

Si001554EC Outdoor Fan / Fan Motor
Removal Procedure 3
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 Disconnect the
connector [S71] and
remove the filament
tape.
[S71]: fan motor
2 Release the fan motor
lead wire from the
groove.
3
4
Remove the nut of the
outdoor fan.
Remove the outdoor
fan.
Nut size: M6
Align the mark of the
outdoor fan with the D-cut
section of the motor shaft
when reassembling.
[S71]
Filament tape
(R22822)
Fan motor lead wireGroove (R21608)
Nut Outdoor fan (R21609)
10 mm
(0.39 inch)
(R18954)

Outdoor Fan / Fan Motor Si001554EC
4Removal Procedure
5 Remove the 2 screws
and remove the fan
motor fixing frame.
When reassembling, fit the 2
lower hooks into the bottom
frame.
6 Open the 3 hooks and
release the fan motor
lead wire.
7 Remove the 3 screws
from the fan motor.
8 Remove the fan motor.
Step Procedure Points
Fan motor fixing frame
(R21611)
Hook (R21610)
Hook
Fan motor lead wire
(R21612)
Fan motor
(R21613)
(R20826)

Si001554EC Electrical Box / PCB
Removal Procedure 5
3. Electrical Box / PCB
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 electrical
box.
1: black, front
2: white, front
3: red, front
1 Disconnect the 3
connectors from the
terminal board.
2 Remove the screw and
detach the earth /
ground wire.
3 Disconnect the
connector [S80].
[S80]: four way valve coil
Cooling only models have no
harness for [S80].
Connector
(R21614)
Earth / ground wire
(R21615)
[S80] (R21616)

Electrical Box / PCB Si001554EC
6Removal Procedure
4 Disconnect the
connector [S20].
[S20]: electronic expansion
valve coil
5 Disconnect the
connector [S40].
[S40]: overload protector
6 Disconnect the
connector [S30].
[S30]: compressor motor
Step Procedure Points
[S20] (R21617)
[S40]
(R21618)
[S30]
(R21619)

Si001554EC Electrical Box / PCB
Removal Procedure 7
7 Disconnect the 2
connectors from the
reactor.
When reassembling, you
can reconnect the 2
connectors for the reactor in
either way regardless of the
color.
8 Disconnect the
connector [S90].
[S90]: thermistors
9 Pull out the clamp from
the bottom.
Step Procedure Points
Reactor Connector (R21620)
[S90] (R21621)
Clamp
(R21622)

Electrical Box / PCB Si001554EC
8Removal Procedure
10 Remove the screw of
the electrical box.
11 Slide the electrical box
to the right and lift up to
remove it.
There are 2 hooks at the
bottom and the top back of
the electrical box.
2. Remove the PCB.
1 Remove earth / ground
screw.
Step Procedure Points
Electrical box
(R21623)
(R21624)
Hook
(R20839)
Earth / ground screw
(R20840)