Daikin FTXS30HVJU User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter
Wall Mounted Type
7.1/8.0/9.0/10.0 kW Class
30000/36000 Btu/h Class
Si04-958

Service Manual
Removal Procedure
Indoor Unit
zCooling Only zHeat Pump
FTKS71HVMG FTXS30HVJU
FTXS36HVJU
FTXS80HVMA
FTXS90HVMA
FTXS100HVMA
FTXS90JVMA
FTXS100JVMA

Si04-958
Removal Procedure 1
Table of Contents
1. Removal of Air Filters / Front Panel ........................................................2
2. Removal of Front Grille ...........................................................................5
3. Removal of Electrical Box .......................................................................8
4. Removal of PCBs..................................................................................12
5. Removal of Horizontal Blades / Swing Motors ......................................20
6. Removal of Fan Motor...........................................................................28
7. Removal of Indoor Heat Exchanger ......................................................31
8. Removal of Fan Rotor ...........................................................................34
9. Removal of Vertical Blade ASSY ..........................................................36
Note: The illustrations may be slightly different depending on the model.

Removal of Air Filters / Front Panel Si04-958
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.
2Slightly push up the
center knob of the air
filter and unfasten the
hooks.
The 3 filters are
interchangeable.
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.
3Pull out the air filter
downward and remove
it.
(R9473)
ON/OFF
(R16974)
Operation lamp
TIMER lampSignal receiver
Room temperature thermistor[ON/OFF] button
INTELLIGENT
EYE sensor
INTELLIGENT
EYE lamp
(R9475)
Front Panel
(R13625)
Air filter Hook

Si04-958 Removal of Air Filters / Front Panel
Removal Procedure 3
3. Remove the Titanium
apatite photocatalytic air-
purifying filters.
1Remove the Titanium
apatite photocatalytic
air-purifying filter ASSY
by unfastening the
projections from the
back of the air filter
frame.
The 3 filters are
interchangeable.
2Remove the Titanium
apatite photocatalytic
air-purifying filter from
its frame.
Step Procedure Points
(R9477)
Air filter
Titanium apatite photocatalytic
air-purifying filter ASSY
(R9478)
Frame
Titanium apatite photocatalytic
air-purifying filter

Removal of Air Filters / Front Panel Si04-958
4Removal Procedure
4. Remove the front panel.
1While opening the front
panel further than it
stops, release both the
shafts.
Slide the front panel from
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 into position.
2Remove the front
panel.
Step Procedure Points
(R9479)
Front Panel
(R9480)
(R9481)
(R9482)

Si04-958 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
1. Remove the service
cover.
1Remove the screw and
remove 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.
Refer to the removal
procedure in a reverse way
when reassembling.
2Remove the 3 screw
covers with a flat
screwdriver.
(R9483)
Service cover
(R9484)
(R9485)
Front grille
(R16266)

Removal of Front Grille Si04-958
6Removal Procedure
3Remove the lower 3
screws.
4Remove the 3 front
grille fixtures.
The Illustration shows the
left fixture.
Step Procedure Points
(R9488)
(R9489)
Front grille fixture
(R9490)

Si04-958 Removal of Front Grille
Removal Procedure 7
5Unfasten the 4 hooks
on the top of the front
grille.
The convex marks (...) on
the front panel indicate the
position of the hooks.
6Pull 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 4 hooks are
fastened as they were.
Step Procedure Points
(R9486)
Hook
(R9487)
Hook
(R12715)
(R9492)

Removal of Electrical Box Si04-958
8Removal Procedure
3. 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. Layout of the parts Preparation
Remove the front grille
according to the “Removal of
Front Grille.”
2. Remove the drip proof
plate.
The shape of the drip proof
plate differs by the model.
1Remove the screw.
2Remove the drip proof
plate from the indoor
heat exchanger.
When reassembling, fit the
hook to the indoor heat
exchanger.
123
(R9493)
123
(R9494)
Drip proof plate
(R9496)
(R9495)

Si04-958 Removal of Electrical Box
Removal Procedure 9
3. Release the earth /
ground wire and the
indoor heat exchanger
thermistor.
1Remove the screw and
release the earth /
ground wire.
2Pull out the indoor heat
exchanger thermistor.
The position of the indoor
heat exchanger thermistor is
slightly different depending
on the model.
Be careful not to lose the clip
of the thermistor.
4. Remove the electrical
box.
1Remove the screw and
remove the wire
retainer.
Remove the 4 screws
on the terminal board
and disconnect the
connecting wire.
Step Procedure Points
123
(R18588)
Earth / ground wire
123
(R9498)
Indoor heat exchanger thermistor
Clip
(R11268)
123
(R17230)
Terminal board
Wire
retainer
Connecting wire

Removal of Electrical Box Si04-958
10 Removal Procedure
2Disconnect the
connector for the fan
motor [S1] and release
the harness from the
hook.
3Release the ferrite
core.
4Disconnect the
connector for the swing
motors [S41].
Step Procedure Points
123
(R9500)
[S1]
(R9501)
Ferrite core
(R9502)
[S41]

Si04-958 Removal of Electrical Box
Removal Procedure 11
5Release the harness
from the hooks.
6Remove the screw of
the electrical box.
7Lift up the electrical box
from the bottom frame
and remove it.
Fit the back hook of the
electrical box to the bottom
frame when reassembling.
Step Procedure Points
(R9503)
123
(R9504)
Electrical box
(R9505)
(R9647)
Bottom frame
Hook

Removal of PCBs Si04-958
12 Removal Procedure
4. 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 signal
receiver PCB.
1Unfasten the hooks of
the shield plate.
2Open the shield plate. The shield plate has 2 hooks
at the lower part also.
3Remove the shield
plate.
(R9506)
Shield
plate
(R9507)
(R9508)
Hook
(R9509)

Si04-958 Removal of PCBs
Removal Procedure 13
4Remove the screw of
the terminal board.
5Remove the terminal
board.
(1 hook at the back)
6Cut the clamp.
Step Procedure Points
(R9511)
(R9512)
Terminal board
(R9513)
Clamp

Removal of PCBs Si04-958
14 Removal Procedure
7Release the harness
from the hook.
When reassembling, make
sure to hook the harness.
8Push and unfasten the
hook of the signal
receiver unit.
9Open the signal
receiver unit.
Unfasten the hook and
remove the signal
receiver unit.
10 Unfasten the hook on
the right of the signal
receiver PCB.
(Then the signal
receiver PCB is lifted
up.)
Step Procedure Points
(R9514)
Hook
(R13518)
Hook
Signal
receiver
unit
(R9516)
Hook
(R13519)
Signal receiver PCB
Signal receiver unit

Si04-958 Removal of PCBs
Removal Procedure 15
11 Remove the signal
receiver PCB.
12 Disconnect the
connector.
[S48]: control PCB
2. Remove the
INTELLIGENT EYE
sensor PCB.
1Unfasten the 2 hooks
on the right and then
the 2 hooks on the left.
Remove the
INTELLIGENT EYE
sensor ASSY.
Step Procedure Points
(R9521)
(R9522)
[S48]
(R9523)
Hook
Hook
INTELLIGENT EYE
sensor ASSY
(R9524)

Removal of PCBs Si04-958
16 Removal Procedure
2Remove the sensor
from the shield plate.
When reassembling, set the
sensor at the position where
it “clicks”. Otherwise, the
sensor is not completely set.
3Remove the shield
plate by unfastening the
2 hooks.
4Disconnect the
connector.
[S36]: control PCB
Step Procedure Points
(R9525)
Sensor Shield plate
(R9526)
Shield plate (rear)
Hook
INTELLIGENT EYE
sensor PCB
(R9527)
[S36]

Si04-958 Removal of PCBs
Removal Procedure 17
3. Remove the display PCB.
1Unfasten the 4 hooks.
2Lift up the display PCB.
3Release the harness
from the hook.
Step Procedure Points
(R9528)
Display PCB
(R9529)
(R9530)
Hook

Removal of PCBs Si04-958
18 Removal Procedure
4Disconnect the
connector.
[S49]: control PCB
4. Remove the control PCB.
1Unfasten the 3 hooks.
Lift up and remove the
control PCB.
2Pull out the earth /
ground wire from the
terminal board.
Step Procedure Points
(R9531)
[S49]
(R9517)
Hook
Hook
Control PCB
(R18589)
Earth / ground
wire