Daikin RKM20QVMA User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Outdoor Unit
Inverter
Pair Type
2.0/2.2/2.5/2.8/3.5 kW Class
Si001653EA

Service Manual
Removal Procedure
Outdoor Unit
zCooling Only zHeat Pump
RKM20QVMA RXF25QVMA
RKM25QVMA RXF35QVMA
RKM35QVMA
RXM20QVMA
RXM25QVMA
RXM35QVMA
RXV25QVMV
RXV35QVMV
RXV22RVLT
RXV28RVLT

Si001653EA
Removal Procedure 1
Table of Contents
1. Outer Panels ...........................................................................................2
2. Outdoor Fan / Fan Motor.........................................................................3
3. Electrical Box / PCB ................................................................................5
4. Suction Grille / Protection Net / Thermistor ASSY ................................10
5. Sound Blankets .....................................................................................13
6. Partition Plate / Electronic Expansion Valve Coil ..................................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 Si001653EA
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 4 screws,
and then the top panel.
Remove the 5 screws
of the front panel.
3
4
Lift up the left side of
the front panel and
unfasten the 3 hooks.
Unfasten the 2 right
side hooks and remove
the front panel.
5
6
Turn the discharge
grille to the left to
unfasten the 6 hooks.
Remove the discharge
grille.
Front panel
Top panel
(R22824)
(R22825)
Hook
Discharge grille
Hook
(R22826)

Si001653EA 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
2
Disconnect the
connector [S70].
Release the fan motor
lead wire from the
groove.
[S70]: fan motor
When reassembling, put the
fan motor lead wire through
the back of the fan motor to
avoid any entanglement with
the outdoor fan.
3 Remove the nut, and
then the outdoor fan.
Nut size: M6
When reassembling, align
the mark of the outdoor
fan with the D-cut section of
the motor shaft.
4 Remove the 2 screws,
and then the fan motor
fixing frame.
When reassembling, fit the 2
lower hooks into the bottom
frame.
Groove
Fan motor lead wire
[S70]
(R22827)
Lead wire Outdoor fan
(R3249)
Outdoor fan
Nut
(R22828)
10 mm
(0.39 inch)
(R18954)
Fan motor fixing frame
(R22829)
Hook (R21610)

Outdoor Fan / Fan Motor Si001653EA
4Removal Procedure
5 Unfasten the 3 hooks
on the fan motor fixing
frame and release the
fan motor lead wire.
6 Remove the 4 screws
from the fan motor.
7 Remove the fan motor.
Step Procedure Points
Hook
Fan motor lead wire
(R21612)
Fan motor
(R24108)
(R22830)

Si001653EA 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 shield plate. When reassembling, make
sure to fit the 4 hooks.
1
2
Remove the screw of
the stop valve cover.
Slide the stop valve
cover downward and
remove it.
3 Remove the screw of
the shield plate.
4 Lift up the shield plate
and unfasten the 2
hooks to remove it.
Stop valve
cover
(R22831)
Hook
(R22832)
Shield plate
(R22833)
Hook
(R22834)

Electrical Box / PCB Si001653EA
6Removal Procedure
2. Remove the electrical
box.
1: black, back
2: white, back
3: red, front
1 Disconnect the 3
connectors from the
terminal board.
2 Disconnect the
connector [S80].
[S80]: four way valve coil
Cooling only models have no
harness for [S80].
3 Disconnect the
connector [S40].
[S40]: overload protector
Step Procedure Points
Connector
(R22835)
[S80]
(R22836)
[S40]
(R22837)

Si001653EA Electrical Box / PCB
Removal Procedure 7
4 Disconnect the
connector [S20].
[S20]: electronic expansion
valve coil
5 Disconnect the
connector [S90] and
pull out the clamp.
[S90]: thermistors
6 Disconnect the relay
connector for
compressor and
remove the harness
from the wire clip.
When reassembling, make
sure the compressor
harness passes through the
wire clip.
Step Procedure Points
[S20] (R22838)
[S90] Clamp (R22839)
Wire clipRelay connector for compressor
(R24109)

Electrical Box / PCB Si001653EA
8Removal Procedure
7 Remove the 2 screws
of the electrical box.
8 Lift up the electrical box
and remove it.
When reassembling, make
sure to fit the rear hook.
3. Remove the PCB.
1 Remove the earth/
ground screw.
Step Procedure Points
(R22841)
(R22842)
Hook
(R24110)
Back view
Earth/ground screw
(R24111)