Daikin ATXG25EV1B User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter
Wall Mounted Type
2.5/3.5 kW Class
Si04-858

Service Manual
Removal Procedure
Indoor Unit
zHeat Pump
ATXG25EV1B
ATXG35EV1B
FTXG25EV1BW
FTXG35EV1BW
FTXG25EV1BS
FTXG35EV1BS
FTXG25EVMAW
FTXG35EVMAW
FTXG25EVMAS
FTXG35EVMAS
FTXG25FVMAW
FTXG35FVMAW
FTXG25FVMAS
FTXG35FVMAS

Si04-858
Removal Procedure 1
Table of Contents
1. Removal of Air Filter................................................................................2
2. Removal of Front Grille ...........................................................................4
3. Removal of Assembly of Front Panel Mechanism ................................10
4. Removal of Lamp Cover .......................................................................13
5. Removal of Horizontal Blade.................................................................14
6. Removal of Reduction Motor.................................................................16
7. Removal of Outlet Grille ........................................................................19
8. Removal of Vertical Blades and Swing Motor .......................................20
9. Removal of Electrical Box .....................................................................24
10.Removal of PCB....................................................................................30
11.Removal of Heat Exchanger .................................................................36
12.Removal of Fan Rotor and Fan Motor...................................................39
Note: The illustrations may be slightly different depending on the model.

Removal of Air Filter Si04-858
2Removal Procedure
1. Removal of Air Filter
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1. Features
When the signal receiver
catches a signal from the
remote controller, it
produces beep sound and
the operation lamp blinks.
2. Remove the air filters.
1Hold the front panel by
the tabs on the both
sides and lift it until it
stops with a click.
2Keep the front panel
open with the support
plate.
Front panel (top)
Slot-in panel Room temperature sensor
(R5001)
Intelligent
eye lamp
Signal
receiver
Timer lamp ON/OFF switch
Operation lamp
(R5002)
(R5003)
Support point
Support plate
(R5004)

Si04-858 Removal of Air Filter
Removal Procedure 3
3Lift an air filter upwards
slightly and then pull it
out downwards.
The right and left air filters
are interchangeable.
Insert the air filters along
grooves when installing.
When installing, insert 2
hooks of the air filter
completely.
3. Remove the air-purifying
filter.
The right and left air-
purifying filters are
interchangeable.
1Titanium Apatite Photo-
catalytic Air-purifying
Filter is fixed on the rear
of the air filter.
2Bend the air filter to
release the protrusions
and remove the
Titanium Apatite
Photocatalytic Air-
Purifying filter.
Step Procedure Points
(R5005)
(R5006)
Titanium Apatite Photocatalytic
Air-purifying Filter (R3763)
(R3764)

Removal of Front Grille Si04-858
4Removal Procedure
2. Removal of Front Grille
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1. Remove the front panel.
Start the removal procedure
of front grille when the
panels are closed.
Slide the front panel side to
side to release each axis.
When assembling, align the
right and left axes with
grooves in turn and insert
them to the end.
1Open the front panel to
the horizontal position.
Release the both sides
pivots and remove the
front panel.
2. Remove the slot-in panel.
1Pull the lower side of
the panel.
2Lift the panel and
remove from the slots.
(R5007)
(R5008)
Slot-in panel
(R5009)
(R5010)

Si04-858 Removal of Front Grille
Removal Procedure 5
3The slot-in panel is
fixed only at the both
ends.
4When assembling, fit
the axes of the slot-in
panel from above.
Push the lower part of
the slot-in panel and
attach to the running
gear.
3. Remove the service
cover.
The service cover has no
screw.
Hooks can be caught from
either right side or lower
side.
1Bend the service cover
inside and release the
hooks.
Step Procedure Points
(R5011)
(R5012)
Service cover
(R5013)

Removal of Front Grille Si04-858
6Removal Procedure
2The service cover has 2
hooks on the right side
and 4 hooks on the
lower side.
When assembling, fit the
right side hooks and insert
the lower hooks while
bending the service cover.
3Loosen the screw on
the service cover of
electrical box.
Step Procedure Points
Hooks
Hooks
(R5014)
(R5016)
Service cover of
electrical box
(R3778)

Si04-858 Removal of Front Grille
Removal Procedure 7
4Pull down and remove
the service cover of
electrical box.
5Loosen the screw on
the fixing plate.
6Push the white section
on the terminal board
and release the relay
wires.
Step Procedure Points
(R3779)
(R3780)
(R3781)

Removal of Front Grille Si04-858
8Removal Procedure
4. Remove the front grille. The front grille has no screw
inside flaps.
1Loosen the 5 screws.
2The front grille has 3
hooks on the upper
side.
3Lift the upper part of the
front grille and release
the hooks.
Release the center
hook first.
Be careful not to cut your
finger by the fins of the heat
exchanger.
As for the horizontal blades,
fully opened position is easy
to reassemble and remove.
Step Procedure Points
(R5017)
Hooks
(R5018)
(R5019)
(R5020)

Si04-858 Removal of Front Grille
Removal Procedure 9
4Release the both sides
hooks.
5Pull the front grille out
horizontally and remove
it.
When assembling, install the
front grille horizontally so as
not to stuff the flap inside.
When assembling, make
sure the three hooks are
caught properly.
Step Procedure Points
(R5021)
(R5073)
(R5022)

Removal of Assembly of Front Panel Mechanism Si04-858
10 Removal Procedure
3. Removal of Assembly of Front Panel Mechanism
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
Remove the front grille.
1. Remove the assembly of
front panel mechanism.
1The back of the front
grilles
2Loosen the 2 screws of
the assembly (left).
3Remove the assembly. When assembling, insert the
lower rack plate first.
4Lift the shaft and pull it
out to the rightward.
Be careful so as not to lose
the drive gear.
(R5023)
Assy. of front panel
mechanism (right)
Assy. of front panel
mechanism (left)
(R5024)
Lower rack plate (R5025)
Shaft
(R5026)
Drive gear
(R3794)

Si04-858 Removal of Assembly of Front Panel Mechanism
Removal Procedure 11
5Loosen the 2 screws of
the assembly (right).
6Remove the assembly. When assembling, insert the
lower rack plate first.
Step Procedure Points
(R5027)
Lower rack plate (R5028)
(R5029)
(R5030)

Removal of Assembly of Front Panel Mechanism Si04-858
12 Removal Procedure
2. Remove the lower rack
plate.
1Loosen the 3 screws of
the left assembly cover.
2Hold the assembly
horizontally and release
the upper hook.
When you demand small
parts like cogs and rollers,
order a set of assembly.
3Keep the assembly
horizontally and undo
the hooks on side and
lower sides.
4Remove the running
gear.
Be careful so as not to lose
the rollers and the cogs.
When you demand small
parts like cogs and rollers,
order a set of assembly.
Step Procedure Points
(R5031)
Hook
(R5032)
Hooks
(R5033)
Running gear
Lower rack plate (R5034)

Si04-858 Removal of Lamp Cover
Removal Procedure 13
4. Removal of Lamp Cover
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
Remove the front grille.
1. Remove the lamp cover.
1Release the 2 hooks
carefully.
2Release the 3 hooks
while rotating the lamp
cover and remove.
(R5035)
ON/OFF button
Hooks
Lamp cover
(R5037)
Film
(R5038)

Removal of Horizontal Blade Si04-858
14 Removal Procedure
5. Removal of Horizontal Blade
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1. Remove the horizontal
blade.
The horizontal blade is
single.
Installation procedure
1. Since key pattern hook is
provided, rotate the blade
and fit it to the left pivot first.
2. Fit the blade to the right
pivot.
3. Fit the blade to the center
pivot.
1Release the center
pivot.
2Bend the horizontal
blade slightly and
remove it.
Swing motor (for horizontal blade)
Horizontal blade
(R3811)
(R5039)
(R3816) (R3813) (R3814)
(R3815)

Si04-858 Removal of Horizontal Blade
Removal Procedure 15
2. Remove the swing motor. The swing motor for
horizontal blade is on the left
side.
1Pull out and remove the
swing motor connector.
2Loosen the screw.
3Pull toward left and
remove the swing
motor.
The axis has a keyhole.
Step Procedure Points
(R5040)
(R5041)
axis (R5042)

Removal of Reduction Motor Si04-858
16 Removal Procedure
6. Removal of Reduction Motor
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
Remove the front grille.
1. Remove the assembly of
reduction motor.
1Undo the 2 hooks and
remove the assembly.
2Peel the harness fixing
tape.
(R5044)
Hook
(R5045)
(R5046)

Si04-858 Removal of Reduction Motor
Removal Procedure 17
2. Remove the reduction
motor.
1Loosen the screw.
2Undo the one hook on
the opposite upper side.
3Undo the one hook in
the center.
Step Procedure Points
(R5047)
(R5048)
(R5049)

Removal of Reduction Motor Si04-858
18 Removal Procedure
4Hold the cog
horizontally and open
the motor side toward
up.
5Layout of the harness
of the motor.
6Lift and remove the
reduction motor.
7Pull and disconnect the
connector for the motor.
Step Procedure Points
(R5050)
(R5051)
(R5052)
(R5053)