Daikin 5MKS100LSG User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Outdoor Unit
Inverter
Multi Type
9.0/9.5/10.0/10.5/11.0 kW Class
32000/36000/38000 Btu/h Class
Si121293EC

Service Manual
Removal Procedure
Outdoor Unit
zCooling Only zHeat Pump
5MKS100LSG 4MXM110PVLT
5MKS100LVMA 5MXS100LVMA
5MKS100LVMA9 5MXS100LVMA9
5MKS110LVM 5MXS110LVM
MKM95PV14 5MXS38PMVM
MKM105PV14
MKM95PV1G
MKM105PV1G
MKM32PV2S
MKM36PV2S
MKM95PVM
MKM105PVM
MKS90QVMG

Si121293EC
Removal Procedure 1
Table of Contents
1. Outer Panels ...........................................................................................2
2. Outdoor Fan / Fan Motor.........................................................................4
3. Electrical Box ..........................................................................................6
4. PCBs .....................................................................................................11
5. Coils / Thermistors ................................................................................16
6. Sound Blankets .....................................................................................18
7. Four Way Valve.....................................................................................19
8. Compressor...........................................................................................21
Note: The illustrations may be slightly different depending on the model.
The illustrations are for heat pump models as representative.

Outer Panels Si121293EC
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 Unfasten the 3 hooks at
the upper first, and then
3 hooks at the middle.
The hooks are secured in
the clearances of the
outdoor heat exchanger fins.
2 Unfasten the 3 hooks at
the bottom and remove
the suction grille.
3
4
Remove the 9 screws,
and then the top panel.
Remove the 5 screws,
and then the right side
panel.
Slide the right side panel
downward to unfasten the 2
hooks on the front side.
5 Remove the screw, and
then the front panel (2).
Slide the front panel (2)
downward to unfasten the 3
hooks.
(R18259)
Suction grille
(R18260)
Top panel
Hook
Hook
Right side
panel
(R18084)
Front panel (2)
Hook
(R18085)

Si121293EC Outer Panels
Removal Procedure 3
6 Remove the 4 screws
on the discharge grille.
7
8
Slide the discharge
grille upward and
unfasten the 4 hooks.
Remove the discharge
grille.
9 Remove the 7 screws,
and then the front panel
(1).
You can remove the front
panel (1) without removing
the discharge grille.
Step Procedure Points
Discharge grille
(R18086)
Hook
(R17953)
Front panel (1)
(R18087)

Outdoor Fan / Fan Motor Si121293EC
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 outdoor fan.
1 Detach the clamp for
the fan motor lead wire.
2
3
Disconnect the
connector [S70].
Release the fan motor
lead wire from the 3
hooks.
[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.
4 Remove the nut, and
then the outdoor fan.
Nut size: M8
When reassembling, align
the ▼mark of the outdoor
fan with the D-cut section of
the motor shaft.
(R22548)
Clamp
(R17956)
[S70]
Hook
Fan motor
lead wire
Lead wire Outdoor fan
(R3249)
Outdoor fan
Nut
D-cut
Motor shaft
(R17957)
13 mm
(R20767)
(0.51 inch)

Si121293EC Outdoor Fan / Fan Motor
Removal Procedure 5
2. Remove the fan motor.
1 Remove the 2 screws,
and then the fan motor
fixing frame.
2 Cut the 2 clamps.
3 Remove the 4 screws,
and then the fan motor.
Step Procedure Points
Fan motor fixing frame
(R17958)
(R17959)
(R17960)
Fan motor
Rubber
cushion

Electrical Box Si121293EC
6Removal Procedure
3. 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. Disconnect the
connecting wires.
4-room models have no
connector for room E.
1
2
Remove the 2 screws
and disconnect the
power supply wire.
Remove the screws
and disconnect the
connecting wires of
rooms A ~ E.
3
4
5
Remove the screw to
detach the earth/ground
wire.
Remove the 8 screws
on the wire fixtures.
Remove the insulation
sheets.
6 Remove the 2 screws,
and then the partition
plate (2).
(R20769)
Connecting wire Power supply wire
(R22549)
Earth/ground wire
Insulation sheet
Wire fixture
Insulation sheet
Wire fixture
(R18090)
Partition plate (2)

Si121293EC Electrical Box
Removal Procedure 7
2. Remove the rear panel. When reassembling, be sure
to insert the 2 hooks into the
holes on the stop valve
mounting plate.
1
2
Remove the 6 screws.
Slide the rear panel
upward to unfasten the
2 hooks.
3 Unfasten the 2 hooks to
release the holder of
the outdoor
temperature thermistor.
4 Unfasten the 2 hooks to
open the holder and
pull out the outdoor
temperature thermistor.
Step Procedure Points
(R18091)
Rear panel
Hook
Hook
Stop valve
mounting
plate
(R18092)
(R17966)
Holder
Hook
Hook
Hook
Outdoor temperature thermistor
(R17967)

Electrical Box Si121293EC
8Removal Procedure
3. Remove the electrical
box.
1 Detach the clamp of the
fan motor lead wire.
2
3
Disconnect the
connector [S70].
Release the fan motor
lead wire from the 3
hooks.
[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.
4 Detach the 3 clamps.
5 Disconnect the 5
connectors for the
electronic expansion
valve coils.
[S20] (white): room A
[S21] (red): room B
[S22] (blue): room C
[S23] (yellow): room D
[S24] (white): room E
4-room models do not have
[S24].
Step Procedure Points
(R22548)
Clamp
(R17956)
[S70]
Hook
Fan motor
lead wire
Lead wire Outdoor fan
(R3249)
(R17970)
[S20] [S21] [S22] [S23] [S24]
(R18093)

Si121293EC Electrical Box
Removal Procedure 9
6 Disconnect the
connectors [S92] and
[S93].
[S92]: gas pipe thermistors
[S93]: liquid pipe thermistors
7
8
Disconnect the
connector [S80] and
pull out the clamp.
Disconnect the
connector [S90].
[S80]: four way valve coil
The cooling only models
have no harness for [S80].
[S90]: thermistor ASSY
9 Pull out the 2 clamps
which fix the harnesses
of the thermistor ASSY
under the electrical box.
Step Procedure Points
(R17972)
[S92] [S93]
(R17973)
[S90] [S80]
Clamp
(R18263)
(R18264)

Electrical Box Si121293EC
10 Removal Procedure
10
11
Disconnect the
connector [S40].
Disconnect the relay
connector for the
compressor.
[S40]: overload protector
12
13
Remove the 2 screws.
Slide the electrical box
to the left and remove it.
Step Procedure Points
(R18094)
[S40]
Relay connector
for the compressor
Electrical box
(R17977)

Si121293EC PCBs
Removal Procedure 11
4. PCBs
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 service
monitor PCB.
1 Unfasten the 4 hooks
and remove the
electrical box cover.
2
3
Disconnect the
connectors [S501],
[S502] and [S503] from
the service monitor
PCB.
Detach the 4
projections and remove
the service monitor
PCB.
[S501] (red):
for [S209] on control PCB
[S502] (yellow):
for [S210] on control PCB
[S503] (white):
for [S206] on control PCB
2. Remove the terminal
board.
1
2
Remove the 4 screws
of the terminal board.
Remove the 2 screws
of the power supply
terminal board.
(R18095)
Electrical box cover
Hook
Hook
Hook
Hook
(R22550)
Projection
Projection
Service
monitor PCB
[S501]
[S503]
[S502]
(R18097)
Power supply
terminal board
Terminal board
brown
black blue
white
(R18107)

PCBs Si121293EC
12 Removal Procedure
3 Pass the harnesses
through the hole on the
terminal board.
4 Disconnect the
connector [S].
[S]: terminal board
5
6
Disconnect the 2 lower
connectors (a) and (b)
of the room B.
Remove the terminal
board.
★Not available for 4-room
models.
Step Procedure Points
(R17981)
Terminal
board
[S]
(R17982)
(b) (a)
BA
C
E
D
(R22556)
Terminal upper lower
A
1 black black
2white white
3red –
B
1 black black
2white white
3yellow –
C
1 black black
2white white
3blue –
D
1 black black ★
2white white
★
3 orange –
E
1black
★–
2white
★–
3gray
★–

Si121293EC PCBs
Removal Procedure 13
3. Remove the control PCB. [HL402]: blue
[HN402]: white
[DCP2]: purple
[DCM2]: brown
[S401]:
for [S202] on control PCB
[S411]:
for [S211] on control PCB
1
2
3
Disconnect the
connectors [HL402] and
[HN402] from the
inverter PCB.
Disconnect the
connectors [DCP2] and
[DCM2].
Disconnect the
connectors [S401] and
[S411].
4 Disconnect the
connectors [S206],
[S209] and [S210] from
the control PCB.
[S206]:
for [S503] on service PCB
[S209]:
for [S501] on service PCB
[S210]:
for [S502] on service PCB
5 Remove the screw of
the earth/ground wire
under the electrical box.
Step Procedure Points
[S411] [S401]
[HL402][HN402]
[DCP2]
[DCM2]
Inverter PCB
(R18098)
(R17984)
[S210]
[S209] [S206]
Earth/ground wire
(R20770)

PCBs Si121293EC
14 Removal Procedure
6 Remove the 2 screws
and unfasten the 4
hooks.
7 Lift up and remove the
control PCB.
4. Remove the inverter PCB.
1 Disconnect the
connectors of the
compressor harness
[U], [V] and [W].
Step Procedure Points
Hook
Hook
(R18100)
Control PCB
(R17987)
(R17988)
WV U

Si121293EC PCBs
Removal Procedure 15
2
3
Remove the 8 screws.
Unfasten the hook and
remove the inverter
PCB.
The screw marked with ★is
larger than the others.
(M4 × 16)
Step Procedure Points
(R18101)
Hook
+
(R17990)
Inverter PCB

Coils / Thermistors Si121293EC
16 Removal Procedure
5. Coils / Thermistors
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 electronic
expansion valve coils.
The number of electronic
expansion valve coils and
thermistors varies depending
on the model.
1
2
Cut the 3 clamps.
Pull out the electronic
expansion valve coils.
2. Remove the thermistors. Be careful not to lose the
clips for the thermistors.
1 Cut the clamps and pull
out the gas pipe
thermistors.
Clamp
(R17991)
(R17992)
Clamp
Electronic
expansion
valve coil
Gas pipe thermistor
(R18102)
Clip

Si121293EC Coils / Thermistors
Removal Procedure 17
2 Peel off the putty and
pull out the liquid pipe
thermistors.
3 Cut the 2 clamps and
pull out the outdoor
heat exchanger
thermistor.
Be careful not to lose the clip
for the thermistor.
The positions of the clamp
and outdoor heat exchanger
thermistor vary depending
on the model.
4 Pull out the outdoor
temperature thermistor
through the hole.
5 Slightly open the sound
blanket (top) and
remove the discharge
pipe thermistor.
Be careful not to lose the
fixture for the thermistor.
Step Procedure Points
(R17994)
Liquid pipe
thermistor
Putty
Be careful not to lose the
fixtures for the thermistors.
(R18103)
Clamp
Outdoor heat
exchanger thermistor
Clip
(R5619)
(R17996)
Outdoor
temperature
thermistor
Discharge pipe
thermistor
(R17997)
Fixture
(R21395)

Sound Blankets Si121293EC
18 Removal Procedure
6. Sound Blankets
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1
2
Pull out the clamp of the
compressor harness
from the partition plate.
Remove the 4 screws,
and then the partition
plate.
When reassembling, fit the
hook on the partition plate to
the notch of the outdoor heat
exchanger plate.
3
4
Remove the sound
blanket (outer top).
Remove the sound
blanket (outer).
Since the piping ports on the
sound blankets are torn
easily, remove the blankets
carefully.
5
6
Remove the sound
blanket (inner top).
Remove the sound
blanket (inner).
(R20771)
Partition plate
Clamp
Partition
plate
Hook
(R17999)
(R18261)
Sound blanket
(outer top)
Sound blanket
(outer)
(R22551)
(R22552)
Sound blanket
(inner)
Sound blanket
(inner top)