Daikin FT25GV1G6 User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter/Non-Inverter
Wall Mounted Type
2.5/3.5/4.0 kW Class
9000/12000 Btu/h Class
Si041048

Service Manual
Removal Procedure
Indoor Unit
zCooling Only zHeat Pump
FT25GV1G6
FT35GV1G6
FTE09LV2S
FTE12LV2S
FTE25KV16
FTE35KV16
FTK40JVLT
FTWN25JV1
FTWN35JV1
FTX40JVLT

Si041048
Removal Procedure 1
Table of Contents
1. Removal of Air Filters..............................................................................2
2. Removal of Front Panel ..........................................................................4
3. Removal of Front Grille ...........................................................................5
4. Removal of Horizontal Blades / Vertical Blades......................................7
5. Removal of Electrical Box .....................................................................10
6. Removal of PCBs..................................................................................13
7. Removal of Drain Pan Unit / Swing Motor.............................................19
8. Removal of Fan Motor...........................................................................23
9. Removal of Indoor Heat Exchanger......................................................25
10.Removal of Fan Rotor ...........................................................................28
Note: The illustrations may be slightly different depending on the model.

Removal of Air Filters Si041048
2Removal Procedure
1. Removal of Air Filters
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 feature
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 filter.
1
2
3
Open the front panel to
the position where it
stops.
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.
Signal receiver Operation lamp
TIMER lamp
(R4306)
(R4305)
[ON/OFF] button Room temperature
thermistor INTELLIGENT EYE
sensor
INTELLIGENT EYE
lamp
(R4307)
Front panel
(R4308)
Air filter

Si041048 Removal of Air Filters
Removal Procedure 3
3. Remove the Titanium
apatite photocatalytic air-
purifying filters.
Some models have no
Titanium apatite
photocatalytic air-purifying
filter.
The right and left filters are
interchangeable.
1The Titanium apatite
photocatalytic air-
purifying filter ASSY is
attached to the back of
the air filter.
2
3
Remove the Titanium
apatite photocatalytic
air-purifying filter ASSY
by bending the air filter
and releasing the
projections from the air
filter frame.
Remove the Titanium
apatite photocatalytic
air-purifying filter from
its frame (at 5 positions)
by bending it.
Step Procedure Points
Air filter
(R4309)
Titanium apatite
photocatalytic
air-purifying filter
ASSY
Projection
(R16029)
(R13174)

Removal of Front Panel Si041048
4Removal Procedure
2. Removal of 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. Remove the front panel.
1Open the panel over
the position where it
stops.
2Slide the left rotary
shaft to the right and
release it.
3Slide the right rotary
shaft to the left and
release it.
4Remove the front panel. When reassembling the
front panel, fit the right and
left rotary shafts one by one
into the grooves and fully
push them into position.
Rotary shaft
Rotary shaft
(R4312)
(R4313)
(R4315)
Front panel
(R17126)

Si041048 Removal of Front Grille
Removal Procedure 5
3. 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 the “Removal
of Front Panel.”
1Remove the screw of
the service cover.
2Remove the service
cover.
You can remove the front
grille without detaching the
service cover.
2. Remove the front grille.
1Open the horizontal
blades.
2Remove the 2 screw
covers.
(R4317)
(R4318)
Service cover
(R4320)
Horizontal blade
(R4321)
Screw cover

Removal of Front Grille Si041048
6Removal Procedure
3
4
Remove the 2 screws.
Unfasten the 3 hooks at
the top.
When reassembling the
indoor unit, drive the screws
with the horizontal blades
open or removed.
The convex marks (...) on
the front panel indicate the
position of the hooks.
5Pull 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.
When reassembling, be
sure not to get it stuck on
the spacer of the drain pan.
Step Procedure Points
H
ook
(R4322)
(R16030)
(R12715)
(R4327)
(R17043)
Spacer
Front grille
Spacer
Section View
(R4590)

Si041048 Removal of Horizontal Blades / Vertical Blades
Removal Procedure 7
4. 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
blade (large).
1
2
3
4
Open the horizontal
blade (large).
Unfasten the center
shaft while bending the
horizontal blade (large)
slightly.
Unfasten the left shaft.
Unfasten the right shaft.
When reassembling, mount
the large horizontal blade to
the upper position and the
small horizontal blade to the
lower position.
Do not put them in the
wrong place.
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 (small)
Horizontal blade (large)
(R11233)
(R4329)
(R4330)
Key alignment
(R4331)

Removal of Horizontal Blades / Vertical Blades Si041048
8Removal Procedure
Step Procedure Points
2. Remove the horizontal
blade (small).
1
2
3
Unfasten the center
shaft while bending the
horizontal blade (small)
slightly.
Unfasten the left shaft.
Unfasten 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 (small)
(R4332)
(R12716)
Key alignment
(R4334)

Si041048 Removal of Horizontal Blades / Vertical Blades
Removal Procedure 9
Step Procedure Points
3. Remove the vertical blade
ASSY.
1
2
Unfasten the 3 hooks at
the shaft mounting part
by pressing them with a
flat screwdriver.
Unfasten the hooks at
the upper 2 positions.
3Remove the vertical
blade ASSY.
A vertical blade ASSY has 6
fins. It is impossible to
replace only one fin.
The vertical blade ASSY is
not marked for difference
between right and left.
Hook
(R4335)
(R4336)
Hook
(R12546)
Vertical blade ASSY

Removal of Electrical Box Si041048
10 Removal Procedure
5. 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
2
3
4
The figure shows the
connections of wire
harnesses.
Remove the screw of
the wire fixture.
Remove the 4 screws
of the terminal board
and disconnect the
connecting wire.
Disconnect the
connector for the swing
motor [S6].
Preparation
Remove the front grille
according to the “Removal
of Front Grille.”
Put any excess wires behind
the power supply lead wire.
(R10876)
Drip proof
plate
Electrical box
(R17044)
Wire fixture
Terminal
board
Connecting
wire
(R16495)
(R10879)
[S6]

Si041048 Removal of Electrical Box
Removal Procedure 11
Step Procedure Points
5Disconnect the
connector for the fan
motor [S7].
Some models have no
harness for [S7].
6
7
8
Remove the screw and
remove the drip proof
plate.
Pull out the indoor heat
exchanger thermistor.
Remove the screw of
the earth wire.
Be careful not to lose the
clip for the thermistor.
(R11470)
[S7]
(R10880)
Drip proof plate
Indoor heat
exchanger
thermistor
(R17236)
(R10882)
Earth wire
Clip
(R11234)

Removal of Electrical Box Si041048
12 Removal Procedure
Step Procedure Points
9Remove the screw of
the electrical box.
10
11
12
Lift up and pull the
electrical box.
Unfasten the hook at
the upper far side by
pressing it from above.
Disconnect the
connector for the fan
motor [S1] and remove
the electrical box.
There is a hook also at the
lower part of the back. When
reassembling the electrical
box, make sure that it is
securely fastened.
Electrical box
(R4346)
(R10884)
(R10883)
Hook
[S1]
(R10885)

Si041048 Removal of PCBs
Removal Procedure 13
6. Removal of PCBs
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 shield plate. Preparation
Remove the electrical box
according to the “Removal
of Electrical Box.”
1
2
3
The figure shows the
appearance of the
electrical box.
Open the shield plate.
Push the upper center
of the shield plate and
unfasten the 2 hooks.
Remove the shield
plate.
2. Release the indoor heat
exchanger thermistor.
1Release the indoor heat
exchanger thermistor
and the earth wire from
the hooks.
Signal receiver
PCB
Signal receiver unit
(R4350)
Shield plate
Hook
(R13208)
Hook
Hook
(R4352)
Earth wire
Clamp
(R4353)
Indoor heat
exchanger
thermistor

Removal of PCBs Si041048
14 Removal Procedure
3. Remove the terminal
board.
1Remove the screw and
remove the terminal
board.
4. Remove the signal
receiver unit.
1
2
Unfasten the 3 hooks
and remove the signal
receiver unit.
Unfasten the 2 hooks.
Step Procedure Points
Terminal board
(R4354)
Signal receiver unit
Hook
Hook
(R4355)
(R12725)
Hook
Hook
(R16033)

Si041048 Removal of PCBs
Removal Procedure 15
3
4
Slide the electrical box
cover to the left and
remove it.
Disconnect the wire
harnesses.
5. Remove the signal
receiver PCB.
1Unfasten the 3 hooks
and remove the signal
receiver PCB.
2Disconnect the
connector [S29] from
the signal receiver
PCB.
Step Procedure Points
Electrical
box cover
Hook
Hook
(R4358)
(R4359)
Hook Hook
Hook
Signal receiver PCB
(R4361)
(R15506)
[S29]

Removal of PCBs Si041048
16 Removal Procedure
6. Remove the
INTELLIGENT EYE
sensor PCB.
Some models have no
INTELLIGENT EYE sensor
PCB.
1
2
3
Remove the
INTELLIGENT EYE
fixing plate by twisting
it.
Unfasten the right 3
hooks and remove the
INTELLIGENT EYE
sensor PCB.
There are also 2 hooks
on the left side.
Disconnect the
connector [S36] from
the INTELLIGENT EYE
sensor PCB.
Step Procedure Points
(R4363)
(R4364)
INTELLIGENT EYE
fixing plate
INTELLIGENT EYE
sensor PCB
(R4365)
[S36]

Si041048 Removal of PCBs
Removal Procedure 17
Step Procedure Points
7. Remove the display PCB. The display PCB is located
at the back of the signal
receiver unit.
1The figure shows the
connection of wire
harness for the display
PCB.
2Unfasten the 3 hooks
and remove the display
PCB.
3Disconnect the
connector [S27] from
the display PCB.
8. Remove the control PCB.
1Unfasten the 2 lower
hooks.
Display PCB
(R4366)
(R4367)
Hook
Green
LED 1
Green
LED 3
Yellow
LED 2
(R4368)
[S27]
Control
PCB
Hook Hook
(R4369)

Removal of PCBs Si041048
18 Removal Procedure
2Lift up the bottom of the
control PCB and pull it
out.
When reassembling the
control PCB, make sure that
it is fixed by 2 upper hooks.
3The figures show the
names of the PCB
component parts.
[S1]: fan motor
[S6]: swing motor
[S7]: fan motor (Hall IC)
[S26]: display PCB
[S27]: control PCB
[S28]: signal receiver PCB
[S29]: control PCB
[S32]: indoor heat exchanger
thermistor
[S35]: INTELLIGENT EYE
sensor PCB
[S36]: control PCB
Some models have no
harness for [S7], [S35].
Step Procedure Points
Hook
Hook
(R4370)
[S35]
[S32]
[S6]
Varistor
Fuse
[S1]
(R16422)
[S7]
[S28] [S26]
[S29] [S27] [S36]
SW1
LED 1
(Green)
LED 2
(Yellow)
LED 3
(Green)
Room temperature
thermistor (R17650)