Daikin FT15LV14 User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Non-Inverter
Wall Mounted Type
1.5/2.0/2.5/3.5 kW Class
Si041265EC

Service Manual
Removal Procedure
Indoor Unit
zCooling Only
FT15LV14
FT20LV14
FT25LV14
FTE15LV1
FTE20LV1
FTE25LV1
FTE20MV1V
FTE25MV1V
FTNE15MV1
FTNE20MV1
FTNE25MV1
FTNE35MV1
FTNE15MV14
FTNE20MV14
FTNE25MV14
FTNE35MV14
FTNE25MV18
FTNE35MV18

Si041265EC
Removal Procedure 1
Table of Contents
1. Air Filters / Front Panel ...........................................................................2
2. Front Grille ..............................................................................................3
3. Horizontal Blades / Vertical Blade ASSYs ..............................................4
4. Electrical Box / PCBs / Swing Motor .......................................................5
5. Indoor Heat Exchanger ...........................................................................8
6. Fan Motor / Fan Rotor...........................................................................10
Note: The illustrations may be slightly different depending on the model.

Air Filters / Front Panel Si041265EC
2Removal Procedure
1. Air Filters / Front Panel
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 air filters.
1 Open the front panel to
the position where it
stops.
2 Remove the air filter. Left and right filters are
interchangeable.
When reassembling, insert
the air filter along the guides.
2. Remove the front panel.
1
2
Open the front panel
fully.
Push the shafts towards
the inside to release.
3 Remove the front panel. When reassembling the front
panel, fit the shafts one by
one into the grooves and
fully push them into position.
(R18646)
Front panel
(R18647)
Air filter
(R23426)
Shaft
(R2513)

Si041265EC Front Grille
Removal Procedure 3
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 Remove the 2 screws.
2 Unfasten the 2 hooks
on the top.
3 Remove the front grille. When reassembling, make
sure that all hooks are
securely fastened.
(R18500)
Front
grille
Hook
(R2519)
(R2521)
In case that the hooks can
not be pressed from above,
remove the front grille while
pushing the hook from the
space between the front
grille and the indoor heat
exchanger.

Horizontal Blades / Vertical Blade ASSYs Si041265EC
4Removal Procedure
3. Horizontal Blades / Vertical Blade ASSYs
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.
1 Open the horizontal
blades.
2 Unfasten the center and
left shafts while bending
the horizontal blade
(small) slightly.
When reassembling, mount
the large horizontal blade to
the upper position and the
small horizontal blade to the
lower position.
3
4
Unfasten the right shaft
and remove the
horizontal blade (small).
Remove the horizontal
blade (large) in the
same way.
Installation procedure
1. Fit the horizontal blade to the
right shaft first. Make sure to
rotate the horizontal blade so
the shaft fits correctly.
2. Fit the horizontal blade to the
center and left shafts.
2. Remove the vertical blade
ASSYs.
Each vertical blade ASSY
has 5 fins, which can not be
replaced individually.
The vertical blade ASSY is
not marked for difference
between right and left.
1
2
3
Unfasten the 4 hooks.
Remove the vertical
blade ASSY.
Remove the other
vertical blade ASSY in
the same way.
(R2522)
(R18761)
Horizontal blade (large)
Horizontal blade
(small)
(R23377)
Right shaft
Hook
(R23378)

Si041265EC Electrical Box / PCBs / Swing Motor
Removal Procedure 5
4. Electrical Box / PCBs / Swing 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 electrical
box.
1
2
Remove the 4 screws
and disconnect the
connecting wires.
Remove the screw, and
then the wire fixture.
3
4
Disconnect the
connectors.
Pull out the indoor heat
exchanger thermistor.
[S1] / [CN_FAN]: fan motor
[S7] / [CN_FANFB]: fan motor
[S6] / [CN_STP]: swing motor
5 Remove the screw on
the terminal board.
6 Remove the screw, and
then the electrical box.
Wire fixture
Connecting
wire
(R18503)
(R21155)
Indoor heat
exchanger thermistor
[S1] / [CN_FAN]
[S7] / [CN_FANFB]
[S6] / [CN_STP]
(R18505)
Terminal
board
(R21156)
Hook
When reassembling the
electrical box, make sure the
hook on the back is securely
fastened.

Electrical Box / PCBs / Swing Motor Si041265EC
6Removal Procedure
2. Remove the PCBs.
1 Remove the shield
plate.
2 Unfasten the 2 hooks.
3 Slide the electrical box
cover to the left and
remove the electrical
box cover.
4 Unfasten the 4 hooks
on the back of the
signal receiver PCB.
Step Procedure Points
Shield plate (R18507)
Hook
Hook
(R21157)
Push
here
(R18509)
Electrical
box cover
Hook
Signal receiver
PCB
(R18502)

Si041265EC Electrical Box / PCBs / Swing Motor
Removal Procedure 7
5
6
Disconnect the
connector [S26] /
[CN_DSP1] on the
control PCB and
remove the signal
receiver PCB.
Unfasten the 2 hooks at
the bottom and remove
the control PCB.
There are 2 hooks also at
the top of the control PCB.
3. Remove the swing motor.
1 Remove the 2 screws,
and then the swing
motor.
Step Procedure Points
(R23376)
Control PCB
Signal receiver PCB
Hook
[S26] /
[CN_DSP1]
(R21158)
Swing motor
(R2543)

Indoor Heat Exchanger Si041265EC
8Removal Procedure
5. Indoor Heat Exchanger
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
In pump-down work, be sure to stop the compressor before disconnecting the
refrigerant pipe. If the refrigerant pipe is disconnected with the compressor operating
and the stop valve open, air may be sucked in and may generate an over-pressure in
refrigeration cycle, thus resulting in pipe rupture or accidental injury.
When removing or reinstalling the indoor heat exchanger, be sure to wear gloves or
wrap the indoor heat exchanger with cloths. (You may be injured by the fins.)
Caution Be sure to conduct pump down operation before disassembling the refrigerant pipe.
If the refrigerant leaks, repair the spot of leaking, then collect all refrigerant from the
unit. After conducting vacuum drying, recharge proper amount of refrigerant.
From the viewpoint of global environmental protection, make sure to use a vacuum
pump for air purging.
Step Procedure Points
1
2
Remove the 2 screws
which fix the indoor
heat exchanger to the
installation plate.
Disconnect the drain
hose.
Place a plastic sheet around
the drain pan to prevent
wetting the floor with
remaining drain.
If the drain hose is
embedded in the wall,
disconnect the drain hose
beforehand.
3
4
Disconnect the gas
piping and the liquid
piping.
Remove the indoor unit
from the installation
plate.
Hold the indoor unit up with a
piece of wood.
Carry out the removal works
with 2 wrenches.
When the pipings are
disconnected, protect the
openings of both the pipes
and the indoor unit from
moisture intrusion.
5 Unfasten the hook and
remove the piping
fixture on the back.
Drain hose
(R18764)
(R2545)
(R18760)
Piping fixture