Daikin FTXR28EV1B9 User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter
Wall Mounted Type
2.8/4.2/5.0 kW Class
Si04-756

Service Manual
Removal Procedure
Indoor Unit
zHeat Pump
FTXR28EV1B9
FTXR42EV1B9
FTXR50EV1B9
FTXR28FVLT
FTXR50FVLT

Si04-756
Removal Procedure 1
Table of Contents
1. Removal of Air Filters / Front panel.........................................................2
2. Removal of Upper Panel .........................................................................8
3. Removal of Front Grille .........................................................................11
4. Removal of Front Panel Mechanism Assembly ....................................14
5. Removal of Reduction Motor Assembly ................................................16
6. Removal of Electrical Box .....................................................................19
7. Removal of PCBs..................................................................................24
8. Removal of Dehumidifying Solenoid Valve Coils ..................................30
9. Removal of Connecting Duct ................................................................31
10.Removal of Drain Hose .........................................................................33
11.Removal of Swing Motors .....................................................................35
12.Removal of Indoor Heat Exchanger ......................................................37
13.Removal of Fan Rotor / Fan Motor........................................................40
14.Removal of Horizontal Blades / Vertical Blades....................................43
15.Removal of Streamer Unit.....................................................................45
Note: The illustrations may be slightly different depending on the model.

Removal of Air Filters / Front panel Si04-756
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. External appearance Multi-colored indicator lamp
changes its color according
to the operation mode.
Remote controller is
interactive communication
type.
2. Remove the air filters.
1Hold the front panel on
both sides and lift it up.
(R5620)
Room temperature thermistor
Humidity sensor
Timer lamp
ON/OFF button
(Multi-colored
indicator lamp)
Signal receiver
MOISTURIZING
lamp
(R13943)
(R13944)
Front panel
(R5623)

Si04-756 Removal of Air Filters / Front panel
Removal Procedure 3
2Keep the front panel
open with the support
plate.
3Push the center part of
the air filter up to
unfasten the 2 hooks.
4Remove the air filter.
5The shapes of the right
and left filters are
different.
Insert the filters along the
guide for easy installation.
Step Procedure Points
(R5624)
Support point
Support
plate
Hook
(R5625)
(R13945)
Air filter
(R5627)
(R5628)

Removal of Air Filters / Front panel Si04-756
4Removal Procedure
3. Remove the deodorizing
filter for streamer.
1Pull the center knob to
unfasten the hook.
2Pull out the deodorizing
filter for streamer.
3Unfasten the 3 hooks. When cleaning, keep the
filter with the frame for
prevention of breakage.
4Slide the filter and
remove it.
Step Procedure Points
(R5629)
(R13946)
Deodorizing filter
for streamer
(R14114)
Hook
(R5632)

Si04-756 Removal of Air Filters / Front panel
Removal Procedure 5
4. Remove the electrode unit.
1Pull down the electrode
unit with holding the
knob.
5. Remove the Titanium
apatite photocatalytic air-
purifying filter.
1Unfasten the projection
of the frame of
Titanium apatite
photocatalytic air-
purifying filter and
remove it.
Insert the filter along the
guide for easy installation.
2Unfasten the 4 hooks
and remove the
Titanium apatite
photocatalytic air
purifying filter.
Step Procedure Points
Electrode unit
(R13947)
(R13948)
Titanium apatite photocatalytic
air-purifying filter
(R5635)
Guide
(R14115)
Hook
Hook

Removal of Air Filters / Front panel Si04-756
6Removal Procedure
6. 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.
7. Remove the front panel.
1Open the front panel
over the stopping
position.
Step Procedure Points
(R5637)
(R13949)
Air supply filter
(R5639)
(R5640)

Si04-756 Removal of Air Filters / Front panel
Removal Procedure 7
2Push the panel
stoppers outward on
both sides to detach
the rotary shafts from
the holes.
3Slide 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
(R5641)
Rotary shaft
Panel
stopper
(R5642)
Rotary
shaft
(R5643)
Rotary shaft
(R5644)

Removal of Upper Panel Si04-756
8Removal Procedure
2. Removal of Upper 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. Remove the service cover.
1Remove the screw
(black) of the service
cover.
2Slide 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.
(R5645)
(R5646)
Service cover
(R13950)
Back side hook
Hook