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

Si04-756 Removal of Upper Panel
Removal Procedure 9
2. Remove the upper panel.
1The upper panel has 3
hooks at the front.
2In part A, pinch and
unfasten the hook.
3In part B, pinch and
unfasten the hook as in
part A.
Step Procedure Points
(R13951)
Upper panel
Part C
Part B
Part A
Part A
(R5649)
(R5650)
Part B

Removal of Upper Panel Si04-756
10 Removal Procedure
4In part C, lift the right
and left sides to bend
the upper panel and
slightly pull it to
unfasten the hook.
5Pull the upper panel
and remove it.
When reassembling, make
sure to catch the 3 hooks on
the far side.
Step Procedure Points
Part C
Hook
Hook
Hook in front
(R18489)
Hook
(R14116)

Si04-756 Removal of Front Grille
Removal Procedure 11
3. 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
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.
(R13952)
Front grille
Hook
(R5655)
(R5654)
Horizontal blade (large) (R14117)

Removal of Front Grille Si04-756
12 Removal Procedure
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.
2There is a gear for front
panel driving.
Step Procedure Points
(R5657)
(R5658)
(R5659)
Front grille
(R13953)
Gear

Si04-756 Removal of Front Grille
Removal Procedure 13
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
(R13954)
Front panel mechanism assembly
Arm
(R5662)
(R5663)

Removal of Front Panel Mechanism Assembly Si04-756
14 Removal Procedure
4. Removal of Front Panel Mechanism Assembly
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 front panel
mechanism assembly
(right).
Preparation
Remove the front grille
according to "Removal of
Front Grille".
1Remove the 2 screws.
2Unfasten the hook
while straightening the
front panel mechanism
assembly (right) and
remove it.
When reassembling, catch
the hook first.
3Pull out the front panel
mechanism assembly
(right) from the shaft.
Replace the front panel
mechanism as an assembly
kit.
(R13955)
Front panel mechanism assembly (right)
Hook
(R5665)
(R13956)
Shaft

Si04-756 Removal of Front Panel Mechanism Assembly
Removal Procedure 15
2. Remove the front panel
mechanism assembly
(left).
1Pull out the shaft from
the front panel
mechanism assembly
(left).
2Remove the 2 screws.
3Remove the front panel
mechanism assembly
(left).
Replace the front panel
mechanism as an assembly
kit.
Step Procedure Points
(R13957)
Front panel
mechanism
assembly
(left)
(R5668)
(R5669)

Removal of Reduction Motor Assembly Si04-756
16 Removal Procedure
5. Removal of Reduction Motor Assembly
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 reduction
motor assembly.
The figure above shows the
hook on the connector for
the reduction motor
assembly.
When touching the electrical
parts like the limit switch, be
sure to conduct the work
after discharging static
electricity of the human
body. It may cause trouble
of the PCB.
1Disconnect the relay
connector for the
reduction motor.
2Remove the screw and
remove the reduction
motor assembly.
2. Remove the reduction
motor.
1Remove the screw.
(R13958)
Reduction motor assembly
(R5671)
(R5672)
Limit switch
(R5673)

Si04-756 Removal of Reduction Motor Assembly
Removal Procedure 17
2Cut the clamp.
3Slide the cover to the
right to unfasten the
hook.
4Lift the cover of the
reduction motor up
slightly to unfasten the
upper hook, and
remove it.
Step Procedure Points
(R5674)
(R5675)
Hook
(R5676)
Hook

Removal of Reduction Motor Assembly Si04-756
18 Removal Procedure
5Pull the gear out to
remove. Remove the
screw of the reduction
motor.
6Turn the reduction
motor assembly over
and peel off the tape.
7Remove the reduction
motor.
The connector of the
reduction motor can be
disconnected.
8Unfasten the 2 hooks
and remove the limit
switch.
Step Procedure Points
(R5677)
(R5678)
(R13959)
Hook