Daikin FTXN09KEVJU User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter
Wall Mounted Type
1.5/2.0/2.5/3.2/3.5 kW Class
9000/12000 Btu/h Class
Si041139

Service Manual
Removal Procedure
Indoor Unit
Applicable Models
zCooling Only
FTXN09KEVJU FTK15KVM4 FTK15KEVM FTKN25KEVM
FTXN12KEVJU FTK20KVM4 FTK20KEVM FTKN35KEVM
zHeat Pump
FTXN09KEVJU
FTXN12KEVJU
FTX25KEVM FTXN25KEV1B
FTX35KEVM FTXN35KEV1B
FTXS225KC-P FTXS225KCSW FTXS225KCGW FTXB325KC-W
FTXS225KC-W FTXS225KCSR FTXS225KCGR FTXB325KC-R
FTXS225KC-S FTXS225KCSS FTXS225KCGN FTXB335KC-W
FTXS232KC-P FTXS225KCSX FTXS225KCGX FTXB335KC-R
FTXS232KC-W FTXS232KCSW FTXS232KCGW FTXN425KC-W
FTXS232KC-S FTXS232KCSR FTXS232KCGR FTXN425KC
FTXS235KC-P FTXS232KCSS FTXS232KCGN FTXN435KC-W
FTXS235KC-W FTXS232KCSX FTXS232KCGX FTXN435KC
FTXS235KC-S FTXS235KCSW FTXS235KCGW
FTZS235KC-W FTXS235KCSR FTXS235KCGR
FTZS235KC-S FTXS235KCSS FTXS235KCGN
FTXS225KCPW FTXS235KCSX FTXS235KCGX
FTXS225KCPC FTZS235KCSW FTZS235KCGW
FTXS232KCPW FTZS235KCSR FTZS235KCGR
FTXS232KCPC FTZS235KCSS FTZS235KCGN
FTXS235KCPW FTZS235KCSX FTZS235KCGX
FTXS235KCPC
FTZS235KC-P
FTZS235KCPW
FTZS235KCPC

Si041139
Removal Procedure 1
Table of Contents
1. Removal of Air Filters..............................................................................2
2. Removal of Horizontal Blade...................................................................4
3. Removal of Front Panel ..........................................................................6
4. Removal of Front Grille ...........................................................................7
5. Removal of Electrical Box / Vertical Blades (Pattern 1) ..........................8
6. Removal of Electrical Box / Vertical Blades (Pattern 2) ........................12
7. Removal of Swing Motor / PCBs...........................................................17
8. Removal of Indoor Heat Exchanger......................................................21
9. Removal of Fan Rotor / Fan Motor (Pattern 1)......................................24
10.Removal of Fan Rotor / Fan Motor (Pattern 2)......................................27
11.Exchange of Piping Direction (Drain Hose)...........................................30
Note: The illustrations may be slightly different depending on the model.

Removal of Air Filters Si041139
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 features
Warning
Dangerous: High voltage
A high voltage is applied to
all the electric circuits of this
product including
thermistors.
When a signal from the
remote controller is
received, the receiving tone
sounds and the operation
lamp flickers 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.
The air filter is not marked
for difference between the
right and left sides.
The air filter can be set
easily by inserting it along
the guides.
Insert the air filter with the
“FRONT” mark faced up.
Be sure to insert the hooks
(at 2 lower positions) when
mounting the air filter.
1Open the front panel to
the position where it
stops.
2Slightly push up the
center of the air filter to
unfasten the 2 hooks.
Room temperature thermistor
(R11616)
Signal receiver
(R17276)
Operation
lamp
TIMER
lamp
[ON/OFF] button
(Forced operation [ON/OFF] button)
Front panel
(R11618)
Hook (R14598)
Air filter

Si041139 Removal of Air Filters
Removal Procedure 3
3Pull out the air filter
downward and remove
it.
3. Remove the Titanium
apatite photocatalytic
air-purifying filters.
1The Titanium apatite
photocatalytic air-
purifying filter is
attached to the back of
the air filter.
2Remove the Titanium
apatite photocatalytic
air-purifying filter frame
by bending the air filter
and unfastening the
projections from the air
filter frame.
3Remove the Titanium
apatite photocatalytic
air-purifying filter from
its frame (at 5 positions)
by bending it.
To prevent the damage, do
not remove the Titanium
apatite photocatalytic air-
purifying filter from the frame
when cleaning it.
The Titanium apatite
photocatalytic air-purifying
filter is not marked for
difference between the right
and left sides.
Step Procedure Points
(R11620)
Air filter
(R8025)
Titanium apatite
photocatalytic
air-purifying filter
Projection
(R14599)
Hook
(R8027)

Removal of Horizontal Blade Si041139
4Removal Procedure
2. Removal of Horizontal Blade
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1Open the horizontal
blade.
2Unfasten the center
shaft while bending the
horizontal blade
slightly.
The center shaft can be
released easily by bending
the blade.
Cautions for reassembling
1. Since the key pattern hook
is provided, rotate the
horizontal blade and fit it to
the right shaft first.
2. Fit the horizontal blade to
the center and left shafts.
3Unfasten the left shaft
of the horizontal blade.
4Unfasten the right shaft
of the horizontal blade.
(R17293)
Horizontal blade
(R17294)
(R17331)
Shaft
(R17332)
Key pattern hook
Left Right
Shaft

Si041139 Removal of Horizontal Blade
Removal Procedure 5
5Remove the horizontal
blade.
Step Procedure Points
(R17333)

Removal of Front Panel Si041139
6Removal Procedure
3. 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
1Open the front panel
over the position where
it stops.
2Release the right rotary
shaft.
The rotary shaft on each
side can be released easily
by sliding each shaft inward.
3Release the left rotary
shaft.
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 in position.
Left side
Front panel
Right side
(R11627)
Right Rotary shaft
(R11628)
Left Rotary shaft
(R11629)
(R11630)

Si041139 Removal of Front Grille
Removal Procedure 7
4. 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 2 screws,
which fix the front grille
to the main body.
Preparation
Remove the front panel
according to the “Removal
of Front Panel”.
2The front grille has 3
hooks on the upper
part.
Refer to the removal
procedure in a reverse way
when reassembling.
3Press each hook, and
also lift the grille up to
unfasten the hooks.
4Pull the upper part of
the front grille out and
lift the lower part up,
and then remove the
front grille.
The convex marks (...) on
the front panel indicate the
position of the hooks.
When reassembling, make
sure that all the 3 hooks are
fastened as they were.
(R11631)
Front grille
(R14618)
Hook
Left Center Right
(R8030)
(R11633)
Left Center Right
(R12715)

Removal of Electrical Box / Vertical Blades (Pattern 1) Si041139
8Removal Procedure
5. Removal of Electrical Box / Vertical Blades
(Pattern 1)
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 connecting
wires.
Preparation
Remove the front grille
according to the “Removal
of Front Grille”.
1Remove the screw of
the service cover.
2Pull out the service
cover down in the
direction of the arrow.
3The figure shows the
connections of wire
harnesses.
(R14600)
Service cover
(R12042)
Terminal board Electrical box
Wire retaining plate
Indoor heat exchanger thermistor
(R14586)

Si041139 Removal of Electrical Box / Vertical Blades (Pattern 1)
Removal Procedure 9
4Remove the screw of
the wire retaining plate.
5Remove the screws of
the terminal board and
disconnect the
connecting wires.
Connecting wires
black (1) ----- power supply
white (2) ----- power supply
red (3) ----- transmission
yellow / green ( )
----- earth / ground
6Pull out the indoor heat
exchanger thermistor.
Take care not to lose the clip
of thermistor.
2. Remove the electrical box.
1Remove the screw and
release the earth /
ground wire.
Step Procedure Points
(R12044)
Terminal board
(R11639)
Connecting
wires
(R12045)
Indoor heat exchanger thermistor
Clip
(R11268)
Thermistor
(R17334)
Earth / ground
wire
Screw

Removal of Electrical Box / Vertical Blades (Pattern 1) Si041139
10 Removal Procedure
2Disconnect the
connector for the fan
motor [S200].
Release the fan motor
harnesses from the
hook.
3Remove the screw of
the electrical box.
4Slide the electrical box
to the right first and
detach the horizontal
blade from the electrical
box.
5Pull the electrical box.
There is a hook on the
bottom frame. When
reassembling, fit the rear
side of the electrical box to
the hook.
Step Procedure Points
(R15844)
[S200]
(R14602)
Hook
(R12048)
(R15845)
(R11657)
Hook
Bottom frame

Si041139 Removal of Electrical Box / Vertical Blades (Pattern 1)
Removal Procedure 11
3. Remove 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.
1Unfasten the hooks at
the upper 2 positions.
2Unfasten the 3 hooks at
the shaft mounting part
by pressing them with a
flat screwdriver.
3Remove the vertical
blade ASSY.
Repeat the same procedure
to remove the vertical blade
ASSY on the other side.
Step Procedure Points
Hook
(R8020)
Vertical blade ASSY
(R8021)
(R8022)
Hook
(R8023)

Removal of Electrical Box / Vertical Blades (Pattern 2) Si041139
12 Removal Procedure
6. Removal of Electrical Box / Vertical Blades
(Pattern 2)
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 connecting
wires.
Preparation
Remove the front grille
according to the “Removal
of Front Grille”.
1Remove the screw of
the service cover.
2Pull out the service
cover down in the
direction of the arrow.
3The figure shows the
connections of wire
harnesses.
4Remove the screw of
the wire retaining plate.
(R14600)
Service cover
(R12042)
Terminal board Electrical box
Wire retaining plate
Indoor heat exchanger thermistor
(R14586)
(R12044)

Si041139 Removal of Electrical Box / Vertical Blades (Pattern 2)
Removal Procedure 13
5Loosen the screws of
the terminal board and
disconnect the
connecting wires.
Connecting wires
black (1) ----- power supply
white (2) ----- power supply
red (3) ----- transmission
yellow / green ( )
----- earth / ground
6Pull out the indoor heat
exchanger thermistor.
Take care not to lose the clip
of thermistor.
2. Remove the electrical box.
1Remove the screw and
disconnect the earth /
ground wire.
Step Procedure Points
Terminal board
(R11639)
Connecting
wires
(R12045)
Indoor heat exchanger thermistor
Clip
(R11268)
Thermistor
Screw
(R12046)
Earth /
ground
wire

Removal of Electrical Box / Vertical Blades (Pattern 2) Si041139
14 Removal Procedure
2Disconnect the
connectors for the fan
motor [S1] [S7].
Release the fan motor
harnesses from the
hook.
3Remove the screw of
the electrical box.
4Slide the electrical box
to the right first and
detach the horizontal
blade from the electrical
box.
5Pull the electrical box.
There is a hook on the
bottom frame. When
reassembling, fit the rear
side of the electrical box to
the hook.
Step Procedure Points
(R14601)
[S7]
[S1]
(R14602)
Hook
(R12048)
(R15845)
(R11657)
Hook
Bottom frame

Si041139 Removal of Electrical Box / Vertical Blades (Pattern 2)
Removal Procedure 15
3. Remove the fan guard. Some models have no fan
guard.
Narrow the edges of the
hook to unfasten it.
1Unfasten the right and
left hooks of the fan
guard with pliers.
2Unfasten the 4 hooks at
the bottom. Remove the
fan guard.
Repeat the same procedure
to remove the fan guard on
the other side.
4. Remove 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.
1Unfasten the hooks at
the upper 2 positions.
Step Procedure Points
Hook
Fan guard
Hook
(R14608)
(R11646)
Hook
(R11647)
Hook
Hook
(R8020)
Vertical blade ASSY
(R8021)

Removal of Electrical Box / Vertical Blades (Pattern 2) Si041139
16 Removal Procedure
2Unfasten the 3 hooks at
the shaft mounting part
by pressing them with a
flat screwdriver.
3Remove the vertical
blade ASSY.
Repeat the same procedure
to remove the vertical blade
ASSY on the other side.
Step Procedure Points
(R8022)
Hook
(R8023)

Si041139 Removal of Swing Motor / PCBs
Removal Procedure 17
7. Removal of Swing Motor / 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
(2).
Preparation
Remove the electrical box
according to the “Removal
of Electrical Box / Vertical
Blades”.
1Unfasten the hooks at
the upper 2 positions of
the shield plate (2).
2Unfasten the hook at
the lower position,
and remove the shield
plate (2).
2. Remove the swing motor.
1Remove the screw of
the swing motor.
(R14603)
Hook
Shield plate (2)
Electrical box
Hook
(R16650)
Swing motor
(R11650)

Removal of Swing Motor / PCBs Si041139
18 Removal Procedure
2Unfasten the hook, and
disconnect the
connector.
The connector of the swing
motor has a hook.
Press the hook with a flat
screwdriver to unfasten it.
3. Remove the display PCB.
1Unfasten the hook, and
release the display PCB
ASSY.
2Turn over the display
PCB ASSY, and
unfasten the 3 hooks to
remove the display
PCB.
3Disconnect the
connector [S27] from
the display PCB.
4The figure shows the
component parts of the
display PCB.
[S27]: for control PCB
Step Procedure Points
(R8037)
(R14847)
(R17335)
Hook
Display PCB ASSY
(R11653)
Hook
Display
PCB
(R14848)
[S27]
TIMER lamp Signal receiver
Operation lamp
ON/OFF button
(Forced cooling operation
[ON/OFF] button)