Daikin FTXZ25NV1B User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter
Wall Mounted Type
2.5/3.5/5.0 kW Class
Si041361E

Service Manual
Removal Procedure
Indoor Unit
zHeat Pump
FTXZ25NV1B
FTXZ35NV1B
FTXZ50NV1B

Si041361E
Removal Procedure 1
Table of Contents
1. Front Panel..............................................................................................2
2. Streamer Unit / Dust Box ........................................................................3
3. Filters ......................................................................................................4
4. Front Grilles / Horizontal Blades .............................................................6
5. Electrical Box / PCBs ............................................................................10
6. Filter Cleaning Unit................................................................................19
7. Humidifying Duct ...................................................................................23
8. Swing Motors ........................................................................................24
9. Indoor Heat Exchanger .........................................................................28
10.Fan Rotor / Fan Motor...........................................................................31
Note: The illustrations may be slightly different depending on the model.

Front Panel Si041361E
2Removal Procedure
1. Front Panel
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
2. Remove the front panel.
1Open the front panel.
2
3
Slide the left rotary
shaft to the outside and
release it.
Release the right rotary
shaft in the same way.
4Remove the front
panel.
(R19803)
Front panel
(R19804)
(R19805)
Rotary shaft (left)
(R19806)
Rotary shaft (right)
(R19807)

Si041361E Streamer Unit / Dust Box
Removal Procedure 3
2. Streamer Unit / Dust Box
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 streamer
unit.
The streamer unit can be
removed without removing
the front panel.
1Remove the streamer
unit.
2. Remove the dust box.
1Slide the right and left
knobs on the dust box
inward and remove the
dust box.
2
3
Slide the cover to the
left and unlock it.
Turn the cover and
open the dust box.
4Pull out the dust brush.
Streamer unit
(R19808)
Dust box
Knob
(R19809)
(R19810)
Cover
Dust brush
(R19811)

Filters Si041361E
4Removal Procedure
3. Filters
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 air filter.
1Pull down the filter
holding frame.
2Turn up the display unit.
3
4
Pull the air filter
downward and remove
it.
Remove the other air
filter in the same way.
2. Remove the photocatalytic
air-purifying and
deodorizing filter.
1Remove the
photocatalytic air-
purifying and
deodorizing filter.
Filter holding frame
(R19813)
(R19814)
Display unit
Air filter
(R19815)
Photocatalytic air-purifying
and deodorizing filter (R19817)

Si041361E Filters
Removal Procedure 5
3. Remove the air supply
filter.
1Remove the air supply
filter.
Step Procedure Points
Air supply filter
(R19818)

Front Grilles / Horizontal Blades Si041361E
6Removal Procedure
4. Front Grilles / Horizontal Blades
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 grille
(left).
1Open the 2 horizontal
blades.
2Remove the 2 screws
of the front grille (left).
3Unfasten the 2 hooks
and remove the front
grille (left).
Horizontal blade
(R19819)
Front grille (left)
(R19820)
Hook
(R19821)
Hook

Si041361E Front Grilles / Horizontal Blades
Removal Procedure 7
2. Remove the front grille
(right).
1Remove the 3 screws
of the front grille (right).
2Unfasten the 2 hooks
and remove the front
grille (right).
3. Remove the front grille
(bottom).
1Remove the screw
cover with a flat head
screwdriver.
Step Procedure Points
Front grille (right)
(R19822)
Hook
Hook
(R19823)
Screw cover
(R19824)

Front Grilles / Horizontal Blades Si041361E
8Removal Procedure
2Remove the screw and
remove the service
cover ASSY.
3Open the air inlet cover.
4Unfasten the 8 hooks
and remove the front
grille (bottom).
If piping work is difficult,
remove the piping cover and
cut the front grille (bottom) to
expand the opening.
Step Procedure Points
(R19825)
Service cover ASSY
(R19826)
Air inlet cover (R19827)
Hook
Hook
Hoo
k
Hook
Hook
Front grille
(bottom) (R19828)
Cut
Cut
(R19829)
Piping cover