Daikin MKM24PV2S User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
5.6/6.2/6.5/7.5/8.0/9.0 kW Class
24000/28000 Btu/h Class
Outdoor Unit
Inverter / Hybrid
Multi Type
Si121561E

Service Manual
Removal Procedure
Outdoor Unit
zCooling Only zHeat Pump
MKM24PV2S 2MXM56PVLT
MKM28PV2S 2MXM75PVLT
MKM65PV14 3MXM90PVLT
MKM80PV14
MKM65PV1G
MKM80PV1G
MV62PV1G

Si121561E
Removal Procedure 1
Table of Contents
1. Outer Panels ...........................................................................................2
2. Outdoor Fan / Fan Motor.........................................................................4
3. Rear Plate ASSY / Electrical Box............................................................6
4. PCBs .....................................................................................................11
5. Partition Plate / Sound Blankets............................................................15
6. Electronic Expansion Valve Coil ASSY / Thermistor ASSYs ................18
7. Four Way Valve.....................................................................................21
8. Compressor...........................................................................................23
Note: The illustrations may be slightly different depending on the model.
The illustrations are for heat pump models as representative.

Outer Panels Si121561E
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 6 screws
and remove the top
panel.
2 Remove the 5 screws
of the right side panel.
The right side panel can be
removed without removing
the top panel.
3
4
Slide the right side
panel downward to
unfasten the 2 hooks on
the left of the right side
panel.
Unfasten the 2 hooks at
the back and remove
the right side panel.
When reassembling, make
sure that the 4 hooks are
securely fastened.
Top panel
(R22446)
Right side panel
(R22447)
Hook
(R22448)

Si121561E Outer Panels
Removal Procedure 3
5 Remove the 6 screws
of the front panel.
6
7
Unfasten the 3 hooks
on the left side.
Remove the front panel.
When reassembling, make
sure that the 3 hooks are
securely fastened.
8 Remove the 4 screws
of the discharge grille.
9 Unfasten the 5 hooks
and remove the
discharge grille.
Step Procedure Points
Front panel (R22449)
Hook
(R22450)
Discharge grille
(R22451)
Hook
Hook
(R22452)

Outdoor Fan / Fan Motor Si121561E
4Removal Procedure
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 drip proof
cover.
2 Disconnect the
connector [S70].
[S70]: fan motor
When reassembling, put the
fan motor lead wire through
the back of the fan motor so
as not to be entangled with
the outdoor fan.
3 Release the fan motor
lead wire from the slit
and the groove.
Drip proof cover
(R22453)
[S70]
(R22454)
Lead wire Outdoor fan
(R3249)
SlitGroove
Fan motor
lead wire
(R22455)

Si121561E Outdoor Fan / Fan Motor
Removal Procedure 5
4 Remove the nut and
remove the outdoor fan.
Nut size : M8
When reassembling, align
the mark of the fan rotor
with the D-cut section of the
motor shaft.
5 Remove the 2 screws
and remove the fan
motor fixing frame.
When reassembling, fit the 2
lower hooks into the bottom
frame.
6 Unfasten the 3 hooks
on the fan motor fixing
frame and release the
fan motor lead wire.
7 Remove the 4 screws
and remove the fan
motor.
Step Procedure Points
D-cut
Nut
Outdoor fan
(R22456)
13 mm
(0.51 inch)
(R18965)
Fan motor fixing frame
(R22457)
Hook (R22212)
Hook
Fan motor lead wire
(R22458)
Fan motor
(R22459)

Rear Plate ASSY / Electrical Box Si121561E
6Removal Procedure
3. Rear Plate ASSY / 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 rear plate
ASSY.
1
2
Remove the 15 screws
on the 4 terminal
boards and disconnect
the 3 connecting wires
(Room A, B, C) and
power supply wire.
Remove the 2 screws
and remove the wire
fixture together with the
3 connecting wires
(Room A, B, C) and
power supply wire.
3
4
Remove the 2 screws.
Tilt the partition plate
(2) upward and pull
forward to unfasten the
2 hooks and remove it.
When reassembling, make
sure that the 2 hooks are
securely fastened.
5
6
Release the outdoor
temperature thermistor
from the slit.
Remove the 5 screws
of the rear plate ASSY.
Terminal board
Power supply
wire
Wire fixture
Connecting wire
(Room C)
Connecting wire
(Room A)
Connecting wire
(Room B)
(R22460)
Partition
plate (2)
(R22461)
Hook (R22462)
Slit
Rear plate ASSY
Outdoor
temperature
thermistor
(R22463)
The number of the terminal
boards varies depending on
the models.

Si121561E Rear Plate ASSY / Electrical Box
Removal Procedure 7
7 Unfasten the 2 hooks
and remove the rear
plate ASSY.
When reassembling, make
sure that the 2 hooks are
securely fastened.
2. Remove the electrical
box.
Be careful not to lose the clip
for the thermistor.
When reassembling, insert
the thermistor harness
through the heat exchanger
pipes.
1 Cut the clamp and pull
out the outdoor heat
exchanger thermistor.
2 Disconnect the
connector [S80] and
pull out the clamp.
[S80]: four way valve
Cooling only models have no
harness for [S80].
Step Procedure Points
Hook
Rear plate ASSY
(R22464)
Clamp
Outdoor heat exchanger thermistor (R22465)
Clip
(R3264)
[S80] Clamp
(R22466)

Rear Plate ASSY / Electrical Box Si121561E
8Removal Procedure
3 Disconnect the
connector [S92] and 3
connectors for
electronic expansion
valve coil.
[S20] (white): room A
[S21] (red): room B
[S22] (blue): room C
[S92]: gas pipe thermistor
The 2-room models do not
have [S22].
The 4-room models have
[S23] (yellow) for room D.
4 Disconnect the
connector [S93].
[S93]: liquid pipe thermistor
5 Disconnect the
connector [S40].
[S40]: overload protector
When reassembling,
connect the connectors in
the reverse order.
Step Procedure Points
[S20]
[S21]
[S22] [S92]
(R22467)
[S93]
(R22468)
[S40]
(R22469)