Daikin FTXR28EV1B9 User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter
Wall Mounted Type
2.8/4.2/5.0 kW Class
Si041260

Service Manual
Removal Procedure
Indoor Unit
zHeat Pump
FTXR28EV1B9
FTXR42EV1B9
FTXR50EV1B9

Si041260
Removal Procedure 1
Table of Contents
1. Air Filters / Panels ...................................................................................2
2. Front Grille ..............................................................................................7
3. Front Panel Mechanism Assembly..........................................................9
4. Reduction Motor ...................................................................................10
5. Electrical Box ........................................................................................12
6. PCBs .....................................................................................................15
7. Dehumidifying Solenoid Valve Coils .....................................................18
8. Connecting Duct....................................................................................19
9. Drain Hose ............................................................................................20
10.Swing Motors ........................................................................................22
11.Indoor Heat Exchanger .........................................................................24
12.Fan Rotor / Fan Motor...........................................................................26
13.Horizontal Blades / Vertical Blades .......................................................28
14.Streamer Unit ........................................................................................30
Note: The illustrations may be slightly different depending on the model.

Air Filters / Panels Si041260
2Removal Procedure
1. Air Filters / Panels
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 filters.
1Open the front panel.
2Keep the front panel
open with the support
plate.
3Push the air filter up.
4Pull the air filter
downward and remove
it.
The shapes of the right and
left filters are different.
Insert the filters along the
guide for easy installation.
(R18485)
Front panel
Support point
Support
plate
(R5624)
Hook
(R5625)
(R18548)
Air filter
(R5628)

Si041260 Air Filters / Panels
Removal Procedure 3
2. Remove the deodorizing
filter for streamer.
1Pull the center knob to
unfasten the hook.
2Pull out the deodorizing
filter for streamer.
3Slide the filter and
remove it.
When cleaning, keep the
filter with the frame to
prevent breakage.
3. Remove the electrode unit.
1Pull down the electrode
unit with holding the
knob.
Step Procedure Points
(R5629)
(R13946)
Deodorizing filter
for streamer
Hook
(R14114)
Electrode unit
(R13947)

Air Filters / Panels Si041260
4Removal Procedure
4. Remove the Titanium
apatite photocatalytic air-
purifying filter.
Insert the filter along the
guide for easy installation.
1Release the projection
of the frame of
Titanium apatite
photocatalytic air-
purifying filter and
remove it.
2Remove the Titanium
apatite photocatalytic
air purifying filter.
5. Remove the air supply
filter.
Insert the filter along the
guide for easy installation.
Install the air supply filter
correctly so that the front
mark comes front.
Humidifying operation
without installing the air
supply filter may form
condensation inside the
front panel and it causes
water leakage.
There are 4 hooks for the air
supply filter.
1Lift the air supply filter
up and take it out.
2Unfasten the 2 hooks
to open the frame and
remove the air supply
filter.
Step Procedure Points
(R18486)
Titanium apatite photocatalytic
air-purifying filter
Guide
Hook
Hook
(R14115)
(R13949)
Air supply filter
(R18549)
Hook
Hook

Si041260 Air Filters / Panels
Removal Procedure 5
6. Remove the front panel.
1Open the front panel
over the stopping
position.
2
3
Push the panel
stoppers outward on
both sides to detach
the rotary shafts from
the holes.
Slide the rotary shaft
on the left to the right
and pull it out.
4Slide the rotary shaft
on the right to the left
and pull it out.
5Remove the front
panel.
Step Procedure Points
(R5640)
Rotary shaft
Panel
stopper
(R18699)
Rotary shaft
(R18700)
(R5644)

Air Filters / Panels Si041260
6Removal Procedure
7. Remove the service cover.
1
2
Remove the screw
(black) of the service
cover.
Slide the service cover
downward to unfasten
the hook on the back
side.
3Remove the service
cover.
When reassembling, catch
the 2 hooks on the far side
first, and close the cover.
8. Remove the upper panel.
1Pinch and unfasten the
hook A and hook B.
2
3
Lift the right and left
sides to bend the upper
panel and slightly pull it
to unfasten the hook C.
Pull the upper panel
and remove it.
When reassembling, make
sure to catch the 3 hooks on
the far side.
Step Procedure Points
(R18487)
Service cover
Hook
Back side hook (R13950)
(R18488)
Upper panel
Hook A
Hook B
Hook C
Hook
Hook
Hook in front
(R18489)

Si041260 Front Grille
Removal Procedure 7
2. Front Grille
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. If the hooks are hard to be
unfasten, use a flat
screwdriver.
The convex marks (...) on
the front panel indicate the
position of the hooks.
1Remove the 3 screws.
2Unfasten the upper 3
hooks.
3Open the horizontal
blade (large) fully for
preventing it from
getting caught in
pulling the front grille
out.
4Remove the front grille.
2. Points on installing the
front grille
When reassembling, make
sure that the horizontal
blade (large) does not come
inside.
When reassembling, follow
the same steps for removal
in reverse.
1When reassembling
the front grille, fit the 4
lower hooks and push
in until they click.
(R13952)
Front grille
Hook
(R5654)
Horizontal blade (large) (R14117)
(R5657)
(R5658)
Front grille (R5659)

Front Grille Si041260
8Removal Procedure
2There is a gear for front
panel driving.
3The front panel
mechanism assembly
is fixed to the front
grille.
Check that the arm is in
the stored position.
4Installation structure
5Movement of the arm
Step Procedure Points
Gear
(R13953)
Arm
Front panel mechanism assembly
(R13954)
(R5662)
(R5663)