Daikin FTKS40JVLT User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter
Wall Mounted Type
4.0/5.0/6.0/7.1 kW Class
Si041056

Service Manual
Removal Procedure
Indoor Unit
zCooling Only zHeat Pump
FTKS40JVLT FTXS40JVLT
FTKS50KVMA FTXS50KVMA
FTKS60KVMA FTXS60KVMA
FTKS71KVMA FTXS71KVMA
FTXS60GV1B FTXS60GV1B
FTXS71GV1B FTXS71GV1B

Si041056
Removal Procedure 1
Table of Contents
1. Removal of Air Filters / Front Panel ........................................................2
2. Removal of Front Grille ...........................................................................5
3. Removal of Horizontal Blades / Vertical Blades......................................6
4. Removal of Electrical Box / PCBs / Swing Motors ..................................8
5. Removal of Indoor Heat Exchanger......................................................15
6. Removal of Fan Motor / Fan Rotor........................................................18
Note: The illustrations may be slightly different depending on the model.

Removal of Air Filters / Front Panel Si041056
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.
2
3
Slightly push up the
center knob of the air
filter and unfasten the
hooks.
Pull out the air filter
downward and remove
it.
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
reassembling the air filter.
(R11320)
ON/OFF
INVERTER
INTELLIGENT EYE
lamp
TIMER lamp Operation lamp
Signal
receiver
INTELLIGENT EYE
sensor (R11321)
Room temperature
thermistor
[ON/OFF] button
Front panel
(R11322)
Air filter
Hook
(R11323)

Si041056 Removal of Air Filters / Front Panel
Removal Procedure 3
3. Remove the Titanium
apatite photocatalytic air-
purifying filters.
1The Titanium apatite
photocatalytic air-
purifying filter ASSY is
attached to the back of
the air filter.
The right and left filters are
interchangeable.
2Remove the Titanium
apatite photocatalytic
air-purifying filter ASSY
by bending the air filter
and releasing the
projections from the air
filter frame.
3Unfasten the 5 hooks
and remove the
Titanium apatite
photocatalytic air-
purifying filter from its
frame.
Step Procedure Points
Air filter
(R11324)
Titanium apatite photocatalytic
air-purifying filter ASSY
Projection
(R13510)
(R11326)
Titanium apatite photocatalytic
air-purifying filter

Removal of Air Filters / Front Panel Si041056
4Removal Procedure
4. Remove the front panel.
1While opening the front
panel further than it
stops, release both the
shafts and remove the
front panel.
Slide the front panel from
side to side to release each
shaft.
Align the right and left shafts
with grooves in turn and
insert them to the end when
reassembling.
Step Procedure Points
(R11327)
(R11328)
(R11329)

Si041056 Removal of Front Grille
Removal Procedure 5
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
1Remove the 3 screws
of the front grille.
Refer to the removal
procedure in a reverse way
when reassembling.
2Unfasten the 3 hooks
on the top of the front
grille.
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.
When reassembling, make
sure that all the 3 hooks are
fastened as they were.
(R11330)
Front grille
Hook
(R13511)
Hook
(R11332)
(R11333)
(R12715)
(R11334)

Removal of Horizontal Blades / Vertical Blades Si041056
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
blades.
2Release the left shaft of
the horizontal blade
(large).
3Release the right shaft. Installation procedure
1. Since the key pattern hook is
provided, rotate the blade
and fit it to the right shaft
first.
2. Fit the blade to the center
and left shafts.
4Release the center
shaft.
Remove the horizontal
blade (large).
5Remove the horizontal
blade (small) in the
same way.
Horizontal blade (small)
Horizontal blade (large)
(R11335)
Left shaft
(R11336)
Right shaft
(R11337)
Center shaft
(R2765)

Si041056 Removal of Horizontal Blades / Vertical Blades
Removal Procedure 7
2. Remove the vertical blade
ASSYs.
The unit has 3 vertical blade
ASSYs linked to one another
with the interlock rods.
1Release the right and
left shafts.
2Unfasten the 3 hooks
for each vertical blade
ASSY.
3Pull the vertical blade
ASSYs rightward and
remove them.
Step Procedure Points
Vertical blade ASSY
(R13512)
Hook
(R13513)
(R11339)

Removal of Electrical Box / PCBs / Swing Motors Si041056
8Removal Procedure
4. Removal of Electrical Box / PCBs / Swing Motors
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 electrical
box.
1Remove the screw and
remove the service
cover.
2Remove the screw and
remove the drip proof
plate.
3Pull out the indoor heat
exchanger thermistor.
Be careful not to lose the clip
of the thermistor.
4Remove the screw of
the earth wire.
5Remove the 4 screws
of the connection wires.
6Remove the screw of
the wire retainer.
Service cover (R13574)
(R13575)
Drip proof
plate
(R11343)
Indoor heat exchanger thermistor
Earth wire
Connection
wire
Wire
retainer
(R17633)
Clip
(R11268)

Si041056 Removal of Electrical Box / PCBs / Swing Motors
Removal Procedure 9
7Disconnect the
connectors for the fan
motor [S1] and for the
swing motors [S41].
8Remove the screw of
the electrical box.
9Dislocate the electrical
box to the left and
unfasten the back hook.
The electrical box has a
hook on its back.
10 Pull the electrical box
out.
Catch the back hook of the
electrical box when
reassembling.
Step Procedure Points
[S41]
[S1]
(R13576)
Electrical box
(R13577)
(R11347)
(R11348)

Removal of Electrical Box / PCBs / Swing Motors Si041056
10 Removal Procedure
2. Remove the PCBs.
1Lift the shield plate and
unfasten the hook.
2Remove the signal
receiver unit by
unfastening the hook.
Unfasten the hook on the
upper side.
3Unfasten the 5 hooks to
remove the display
PCB.
Step Procedure Points
Shield plate
(R11349)
Hook
Signal
receiver
unit
(R13578)
Display
PCB
(R11351)

Si041056 Removal of Electrical Box / PCBs / Swing Motors
Removal Procedure 11
4Disconnect the
connector [S49] from
the display PCB.
5Unfasten the 4 hooks.
Remove the
INTELLIGENT EYE
sensor PCB, and
disconnect the
connector [S36].
6Unfasten the 2 hooks.
Remove the signal
receiver PCB and
disconnect the
connector [S48].
Step Procedure Points
(R11352)
[S49]
INTELLIGENT EYE
sensor PCB
(R11353)
[S36]
Signal receiver
PCB
(R11354)
[S48]

Removal of Electrical Box / PCBs / Swing Motors Si041056
12 Removal Procedure
7Pull out all the
harnesses from the
terminal board.
8Unfasten the 3 hooks
and remove the control
PCB.
[S1] : DC fan motor
[S25]: INTELLIGENT EYE
sensor PCB
[S32]: indoor heat exchanger
thermistor
[S41]: swing motors
[S46]: display PCB
[S47]: signal receiver PCB
Step Procedure Points
(R11355)
Terminal
board
Hook
(R13514)
Control PCB
Hook
(R16424)
[S32]
[S1]
[S41]
[S46]
[S25]
[S47]

Si041056 Removal of Electrical Box / PCBs / Swing Motors
Removal Procedure 13
3. Remove the swing motor
for horizontal blades.
1Remove the screw of
the swing motor.
2Remove the swing
motor for horizontal
blades.
4. Remove the swing motor
for vertical blades.
1Remove the swing shaft
on the right side.
Remove the swing shaft.
Step Procedure Points
(R11359)
(R11360)
Swing motor
(R11361)
Swing shaft
(R9075)
(1)Unfasten the hook.
(2)Pull out the swing shaft.

Removal of Electrical Box / PCBs / Swing Motors Si041056
14 Removal Procedure
2Pull out the drain hose.
3Remove the 2 screws
and detach the swing
motor unit.
In case that you cannot
remove the swing motor unit
easily, remove the auxiliary
piping first. Refer to the
“Removal of Indoor Heat
Exchanger”.
4Remove the 2 screws
and remove the swing
motor for vertical
blades.
The assembly has 6 hooks.
Step Procedure Points
Drain hose
(R11357)
(R13624)
Swing motor
unit
(R13515)
Hook
Swing motor
Hook

Si041056 Removal of Indoor Heat Exchanger
Removal Procedure 15
5. Removal of Indoor Heat Exchanger
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 refrigerant
piping.
Preparation
Remove the electrical box
according to the “Removal of
Electrical Box / PCBs /
Swing Motors”.
Caution
From the viewpoint of global
environment protection, be
sure to use a vacuum pump
for air purging.
Caution
In pump-down work, be sure
to stop the compressor
before disconnecting the
refrigerant piping. If the
refrigerant piping 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.
Place a plastic sheet under
the drain pan to prevent from
wetting the floor with
remaining drain.
If the drain hose is
embedded in the wall,
disconnect the drain hose
beforehand.
Carry out the removal work
with 2 wrenches.
When the pipings are
disconnected, protect both
the openings of pipe and unit
from entering of moisture.
1Hold the indoor unit up
with a piece of wood
etc.
2Pull out the drain hose.
3Unscrew the flare nut
for gas piping.
4Unscrew the flare nut
for liquid piping.
(R11364)
(R2794)
Drain hose
(R2795)
(R2796)
Gas piping
Liquid piping

Removal of Indoor Heat Exchanger Si041056
16 Removal Procedure
2. Remove the indoor heat
exchanger.
1Detach the indoor unit
from the installation
plate.
2Unfasten the hook of
the piping fixture at the
back of the indoor unit.
Remove the piping
fixture.
3Slightly widen the
auxiliary piping.
Step Procedure Points
(R11365)
(R11366)
Piping fixture
(R11367)
Auxiliary piping

Si041056 Removal of Indoor Heat Exchanger
Removal Procedure 17
4Unfasten the hooks on
the left side. Caution
When removing or
reassembling the indoor heat
exchanger, be sure to wear
gloves or wrap the indoor
heat exchanger with cloths.
(You may be injured by the
fins.)
5Push the hooks on the
right side and unfasten
them.
6Pull the indoor heat
exchanger to the front
side and unfasten the
hooks completely, and
then lift it.
Step Procedure Points
Hook
(R13516)
Hook
(R13517)
(R11370)
Indoor heat exchanger

Removal of Fan Motor / Fan Rotor Si041056
18 Removal Procedure
6. Removal of Fan Motor / Fan Rotor
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 right side
plate.
1Remove the 2 screws. You can remove the fan
rotor without detaching the
right side plate.
2Lift the right side plate
and remove it.
2. Remove the fan motor.
1Remove the screw and
remove the fan motor
fixing plate.
2Loosen the screw of the
fan rotor.
Right side
plate
(R11371)
(R11372)
Fan motor fixing plate
(R11373)
(R11374)