Daikin FTXM09VVJU User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter
Wall Mounted Type
9000/12000/18000/24000 Btu/h Class
Si042153E

Service Manual
Removal Procedure
Indoor Unit
Heat Pump
FTXM09VVJU
FTXM12VVJU
FTXM18VVJU
FTXM24VVJU

Si042153E
Removal Procedure 1
Table of Contents
1. Front Panel / Air Filters ...........................................................................2
2. Front Grille ..............................................................................................5
3. Electrical Box ..........................................................................................7
4. PCBs .......................................................................................................9
5. Horizontal Swing Motors .......................................................................14
6. Drain Pan ..............................................................................................17
7. Vertical Swing Motor .............................................................................19
8. Indoor Heat Exchanger .........................................................................22
9. Fan Rotor / Fan Motor...........................................................................24
Note: The illustrations may be slightly different depending on the model.

Front Panel / Air Filters Si042153E
2Removal Procedure
1. Front Panel / Air Filters
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1. Appearance
1 Appearance and name
of parts.
A beep and blinking of the
operation lamp are indication
of received signal from the
remote controller.
Pressing ON/OFF switch for
5 seconds or longer can start
forced cooling operation.
2. Remove the front panel.
1 Open the front panel
until it stops.
2 Slide each rotary shaft
outward and pull up to
remove.
When reassembling the front
panel, fit the right and left
rotary shafts one by one into
the grooves and fully push
them in position.
(R26137)
Signal
receiver
ON/OFF switch/
OPERATION lamp
INTELLIGENT EYE sensor
Wireless LAN
connection
adapter lamp
INTELLIGENT
EYE lamp
CLEAN lamp
TIMER lamp
(R26138)
Front panel
Left Rotary shaft
(R26139)
Right
Rotary shaft
(R26140)

Si042153E Front Panel / Air Filters
Removal Procedure 3
3 Remove the front panel.
3. Remove the air filters. The air filters can be
removed without removing
the front panel.
1 Push the filter tab at the
center of the air filter a
little upward to unfasten
the 2 hooks.
2
3
Pull out the air filter
downward to remove it.
Remove the other air
filter in the same way.
The air filter is not marked
for difference between the
right and left sides.
The air filter can be set
easily by inserting it along
the guides.
Insert the air filter with the
“FRONT” mark faced up.
Be sure to insert the hooks
(at 2 lower positions) when
installing the air filter.
Step Procedure Points
Front panel
Groove
(R26141)
(R26142)
Filter tab
Hook
(R26143)
Air filter
"FRONT" mark

Front Panel / Air Filters Si042153E
4Removal Procedure
4. Remove the optional
filters.
The right and left optional
filters are interchangeable.
1 Unfasten the 4
projections to remove
the optional filter ASSY.
2
3
Unfasten the 5 hooks
and remove the
optional filter from its
frame.
Remove the other
optional filter in the
same way.
Step Procedure Points
Projection Projection
Back side
Optional filter ASSY
(R22881)
Optional filter
Hook
Hook
(R23512)

Si042153E Front Grille
Removal Procedure 5
2. Front Grille
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 wire.
There is no hook at the top
of the service cover. Be
careful not to drop it when
the screw is removed.
Screw size: M4 × 12 (with
washer)
1 Remove the screw and
remove the service
cover.
2
3
Remove the screw,
unfasten the hook and
remove the wire fixture.
Loosen the 4 screws of
the terminal strip and
disconnect the
connecting wire.
When reassembling, be sure
to fasten the hook before
tightening the screw.
2. Remove the front grille. Installation procedure
(1) Since the key pattern shaft is
provided, rotate the
horizontal blade and fit it to
the right shaft first.
(2) Fit the horizontal blade to the
center and left shafts.
18/24 class have 2 center
shafts.
1 Release the center
shaft(s) while bending
the horizontal blade (2)
slightly.
Service cover
(R26144)
Wire fixture Connecting wire Hook
Terminal strip Screw
(R26145)
Hook (R26146)
Horizontal blade (2) Center shaft
(R26147)

Front Grille Si042153E
6Removal Procedure
2
3
Release the left shaft.
Release the right key
pattern shaft and
remove the horizontal
blade (2).
4
5
Use the flat screwdriver
to open the screw
covers.
Remove the screws.
The numbers of screw
covers and screws on front
grille are depending on the
models.
When removing the screw
covers, cover the tip of the
flat screwdriver with a cloth
to avoid damaging the grille.
6
7
Unfasten the 3 hooks at
the top.
Pull out the upper part
of the front grille, and
then remove the front
grille.
The convex marks (…) on
the front panel indicate the
position of the hooks.
When reassembling, make
sure that all the 3 hooks are
fastened.
Step Procedure Points
(R26148)
Shaft
Left
(R26149)
Key pattern shaft
Right
Small type models
Screw cover
(R26150)
Large type models
Screw cover
(R26151)
Screw cover
(R26069)
Hook
Front grille (R26152)
Hook
(R26071)

Si042153E Electrical Box
Removal Procedure 7
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
2
Remove the screw.
Slide the electrical box
cover forward to
unfasten the hook, and
then remove it.
Screw size: M4 × 12 (with
washer)
When reassembling, make
sure that the hook is
securely fastened.
3
4
5
6
Disconnect the
connector [S200].
Release the harnesses
from the hook and the
slit.
Disconnect the
connector [S400].
Release the harnesses
from the 5 hooks and
the notch.
[S200]: fan motor
[S400]: swing motors
7 Remove the screw, and
then the drip proof
plate.
Hook
Electrical box cover
(R26153)
[S400]
[S200]
Hook
Hook Hook
Notch
Hook
Slit
(R26155)
Drip proof plate (R26156)

Electrical Box Si042153E
8Removal Procedure
8
9
Remove the screw and
detach the earth/ground
wire.
Pull out the indoor heat
exchanger thermistor.
Screw size: M4 × 12 (with
washer)
Be careful not to lose the clip
of the thermistor.
The position of the indoor
heat exchanger thermistor
varies depending on the
model.
10 Remove the screw of
the electrical box.
11 Pull the electrical box to
the front and remove it.
When reassembling, make
sure that the 2 hooks are
securely fastened to the
bottom frame.
When reassembling, be
careful not to get the fan
motor wire caught between
the electrical box and the
bottom frame.
12
13
Remove the screw and
unfasten the hook to
detach the conduit
mounting plate.
Loosen the nut lock and
remove the conduit
together with the
connecting wire.
Step Procedure Points
Earth/ground wire
Indoor heat exchanger thermistor
(R26157)
(R11268)
Clip
Electrical box
(R26158)
Fan motor wire
Bottom frame
Hook
Back view
Nut lock
Hook
Conduit
Conduit mounting plate
(R26159)

Si042153E PCBs
Removal Procedure 9
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 control PCB. Screw size for earth/ground
wire: M4 × 12 (with washer)
1
2
3
Turn the electrical box
over.
Remove the earth/
ground wire screw.
Remove the screw and
loosen the terminal strip
mounting plate ASSY.
4 Disconnect the
connectors [S300A],
[S301B], [S501],
[S600], [S602], and
[S801].
[S300A], [S301B]:
power supply PCB
[S501]: indoor heat exchanger
thermistor
[S600]: humidity sensor PCB
[S602]: intelligent eye sensor
PCB
[S800]: display/signal receiver
PCB
[S801]: wireless LAN
connection PCB
5 Unfasten the 2 hooks
and remove the control
PCB.
There is the radiation sheet
under the control PCB, when
reassembling, make sure to
that it is attached.
Left view
Terminal strip
mounting plate
ASSY
Earth/ground wire screw
(R26161)
(R26162)
[S801] [S301B][S800]
[S501]
[S600]
[S602]
Right view
[S300A]
(R26163)
Control PCB
Power supply PCB
Hook
Hook
Radiation
sheet
Radiation sheet
indicating hole
(R26083)

PCBs Si042153E
10 Removal Procedure
2. Remove the power supply
PCB.
[S101]: terminal strip
[S103]: control PCB
[FG]: ground
1 Remove the connectors
[S101], [S103], and
[FG].
2 Unfasten the 2 hooks
and remove the power
supply PCB.
3. Remove the display/
signal receiver PCB.
1 Open the signal
receiver unit.
Step Procedure Points
[S101]
[S103]
[FG]
(R26164)
Hook
Hook
Power supply PCB
(R26165)
(R26086)
Signal receiver unit

Si042153E PCBs
Removal Procedure 11
2
3
Unfasten the 3 hooks
(A) of the signal
receiver unit from the
base.
Release the harness
from the 2 hooks (B)
and the notch.
4 Unfasten the 3 hooks.
5 Release the harness
from the 2 hooks and
the slit.
Step Procedure Points
Hook (B)
Hook (A)
Signal receiver unit
Base (Signal
receiver unit)
Notch
(R26167)
Hook
Back view
(R26088)
(R26089)
Hook
Side view
Slit
Back view
(R26090)

PCBs Si042153E
12 Removal Procedure
6 Turn over the display/
signal receiver PCB to
disconnect the
connector [S920], and
then remove it.
[S920]: display/signal receiver
PCB
4. Remove the intelligent
eye PCB.
1 Unfasten the 2 hooks.
2 Release the harness
from the 4 hooks and
the slit.
Step Procedure Points
Display/signal
receiver PCB
[S920]
(R26091)
Hook
Hook
Back view
(R26092)
Side view
Hook
(R26093)
Hook
Slit
Front view
(R26094)

Si042153E PCBs
Removal Procedure 13
3 Turn over the intelligent
eye PCB to disconnect
the connector, and then
remove it.
5. Remove the humidity
sensor PCB.
1
2
Unfasten the 3 hooks
around the humidity
sensor PCB.
Release the harness
from the hook (A), and
then remove the
humidity sensor PCB.
Step Procedure Points
Connector
Intelligent eye PCB
(R26095)
Hook
Hook (A)
Hook
Humidity
sensor PCB
(R26168)

Horizontal Swing Motors Si042153E
14 Removal Procedure
5. Horizontal Swing Motors
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 horizontal
blade (1).
Installation procedure
(1) Since the key pattern shaft is
provided, rotate the
horizontal blade and fit it to
the right shaft first.
(2) Fit the horizontal blade to the
center and left shafts.
18/24 class have 2 center
shafts.
1 Release the center
shaft(s) while bending
the horizontal blade (1)
slightly.
2
3
Release the left shaft.
Release the right key
pattern shaft and
remove the horizontal
blade (1).
2. Remove the swing motor
for the horizontal blade
(2).
1
2
3
Remove the screw.
Pull out the swing motor
while turning it a little to
the left.
Disconnect the
connector of the swing
motor.
Horizontal blade (1) Center shaft (R26169)
Shaft
Left
(R26170)
Right
Key pattern shaft
(R26171)
Swing motor for horizontal blade (2)
Connector
(R26172)

Si042153E Horizontal Swing Motors
Removal Procedure 15
3. Remove the swing motor
for the horizontal blade
(1).
1 Remove the 2 screws
on the gear case.
2 Release the harness
from the 4 hooks at the
front and the 3 hooks at
the back.
3 Remove the screw, and
then remove the gear
case cover.
When reassembling make
sure to wind the harness into
the position shown below.
Step Procedure Points
(R26101)
(R26102)
Hook
Front view
(R26103)
Hook
Back view
(R26104)
Gear case cover
(R26105)

Horizontal Swing Motors Si042153E
16 Removal Procedure
4 Remove the 2 gears
and gear shaft.
5
6
Turn the gear case
over, remove the screw
and cut the clamp.
Disconnect the
connector, and then
remove the swing motor
for the horizontal blade
(1).
Step Procedure Points
(R26106)
Gear
Gear shaft
Swing motor for
horizontal blade (1) Clamp (R26107)

Si042153E Drain Pan
Removal Procedure 17
6. Drain Pan
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 screw.
Slide the electrical box
cover forward to
unfasten the hook, and
then remove it.
Screw size: M4 × 12 (with
washer)
The drain pan can be
removed without removing
the electrical box.
When reassembling, make
sure that the hook is
securely fastened.
3
4
Disconnect the
connector [S400].
Release the harnesses
from the 5 hooks and
the notch.
[S400]: swing motors
5
6
Unfasten the hook and
open the signal receiver
unit to the lower right
until it clicks.
Remove the drain hose
fixing screw, and then
detach the drain hose.
Place a plastic sheet around
the drain pan to prevent
wetting the floor with
remaining drain.
Hook
Electrical box cover
(R26153)
[S400]
Hook
Notch
Hook Hook (R26173)
Hook
Drain hose
Signal receiver
unit
(R26174)

Drain Pan Si042153E
18 Removal Procedure
7 Remove the screw.
8 Unfasten the 2 hooks
and remove the drain
pan.
When reassembling, make
sure that all the 2 hooks are
fastened.
Step Procedure Points
(R26175)
(R26176)
Hook
Bottom view
Drain pan
(R26177)