Daikin SUPER MULTI NX FTXS15HVJU User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter
Wall Mounted Type
15000/18000/24000 Btu/h Class
Si04-955

Service Manual
Removal Procedure
Indoor Unit
zCooling Only zHeat Pump
FTE18JV2S FTXS15HVJU
FTXS18HVJU
FTE24GV2S FTXS24HVJU

Si04-955
Removal Procedure 1
Table of Contents
1. Removal of Air Filters / Front Panel ........................................................2
2. Removal of Front Grille ...........................................................................4
3. Removal of Horizontal Blades / Vertical Blades......................................6
4. Removal of Electrical Box .......................................................................8
5. Removal of PCBs..................................................................................10
6. Removal of Swing Motor .......................................................................13
7. Removal of Indoor Heat Exchanger......................................................14
8. Removal of Fan Rotor / Fan Motor........................................................17
9. Exchange of Drain Hose (Piping Direction)...........................................19
Note: The illustrations may be slightly different depending on the model.

Removal of Air Filters / Front Panel Si04-955
2Removal Procedure
1. Removal of Air Filters / Front Panel
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1. Appearance features
Warning
Dangerous: High voltage
A high voltage is applied to all
the electric circuits of this
product including
thermistors.
When the signal receiver
catches a signal from the
remote controller, the
receiving tone sounds and
the operation lamp blinks
immediately to confirm the
signal reception.
When the [ON/OFF] button
is kept pressed for 5
seconds, the forced cooling
operation is performed for
about 15 minutes.
2. Remove the air filters.
1Open the front panel to
the position where it
stops.
2Lift the air filter upward
slightly by the center
knob, and then pull it
out downward.
The air filter is not marked
for difference between the
right and left sides.
Insert the air filter with the
"FRONT" mark faced up.
The air filter can be set
easily by inserting it along
the guides.
Be sure to insert the hooks
(at 2 lower positions) when
mounting the air filter.
Room temperature sensor
(thermistor)
(R5323)
Operation lamp
Timer lamp
[ON/OFF] button
Signal
receiver
(R15466)
Front panel
(R5325)
Air filter
(R5326)

Si04-955 Removal of Air Filters / Front Panel
Removal Procedure 3
3Pull out the air filter
downward.
The right and left filters are
interchangeable.
Insert the air filters along
grooves when installing.
Insert the 2 hooks of the air
filter completely.
3. Remove the Titanium
apatite photocatalytic air-
purifying filters.
1Push up the bottom of a
Titanium apatite
photocatalytic air-
purifying filter to
unfasten the hooks (2
on lower, 3 on upper)
and take the filter out.
The right and left filters are
interchangeable.
4. Remove the front panel. Slide the front panel side to
side to release each shaft.
When reassembling the front
panel, fit the right and left
rotary shafts one by one into
the grooves and fully push
them in position.
1While opening the front
panel further than
where it stops, release
both the shafts and
remove the front panel.
Step Procedure Points
"FRONT"
Hook
(R13212)
Hook
Hook
(R13213)
Titanium apatite
photocatalytic air-
purifying filter
(R2752)
(R18632)

Removal of Front Grille Si04-955
4Removal Procedure
2. Removal of Front Grille
Procedure 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
cover.
Preparation
Remove the front panel
according to "Removal of Air
Filters / Front Panel".
1Remove the screw of
the service cover.
2Pull out the service
cover.
You can remove the front
grille without detaching the
service cover.
2. Remove the front grille.
1Remove the 3 screws
of the front grille.
Service cover
(R5331)
(R5332)
Front grille
(R5333)

Si04-955 Removal of Front Grille
Removal Procedure 5
2Release the 3 hooks on
the top of the front
grille.
The front grille has 3 hooks
on the center and the both
sides of the upper part.
Refer to the removal
procedure in a reverse way
when reassembling.
The convex marks (...) on
the front panel indicate the
position of the hooks.
3Pull the upper part of
the front grille out and
lift the lower part up,
and then remove the
front grille.
Make sure that all the 3
hooks are placed securely
when reassembling.
Step Procedure Points
(R13215)
(1)
(2)
(R15467)

Removal of Horizontal Blades / Vertical Blades Si04-955
6Removal Procedure
3. Removal of Horizontal Blades / Vertical Blades
Procedure 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
blades.
1Open the horizontal
blade (large).
2Release the left shaft of
the horizontal blade.
3Bend the horizontal
blade slightly and
release the 2 center
shafts.
Slide the horizontal
blade to the left and
release the right shaft.
There is a key alignment at
the right shaft. When
reassembling, insert the right
shaft first while turning.
After inserting the right shaft,
mount the horizontal blade to
the center shaft and then to
the left shaft.
Horizontal blade (large)
(R13216)
Horizontal blade (large)
(R13217)
Horizontal blade (large)
(R13218)
Horizontal blade (large)
Key alignment
(R15468)

Si04-955 Removal of Horizontal Blades / Vertical Blades
Removal Procedure 7
4Remove the horizontal
blade (small) in the
same methods.
2. Remove the vertical blade
ASSY.
1Remove the
interlocking shaft for the
vertical blades.
2Release the 3 hooks
with a flat screwdriver
and remove the vertical
blade ASSY.
Step Procedure Points
Horizontal blade (small)
(R13220)
Horizontal blade (small)
(R13221)
Interlocking shaft
(R5342)
Vertical blade ASSY
(R13222)
(R13223)

Removal of Electrical Box Si04-955
8Removal Procedure
4. Removal of Electrical Box
Procedure 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 each
harness.
Preparation
Remove the front grille
according to "Removal of
Front Grille".
1 Remove the screw and
remove the drip proof
plate.
2 Remove the screw of
the earth / ground wire
and cut the clamp.
Be careful not to lose the clip
for the thermistor.
3 Pull out the indoor heat
exchanger thermistor.
4 Disconnect the
connector for the fan
motor [S1].
(R5345)
Drip proof plate
(R5346)
Indoor heat
exchanger
thermistor
Earth /
ground wire
(R18587)
Clip
(R11234)
[S1]
(R5348)