Daikin FFQ09Q2VJU User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter
Ceiling Mounted Cassette Type
9000/12000/15000/18000 Btu/h Class
Si091657EA

Service Manual
Removal Procedure
Indoor Unit
zHeat Pump
FFQ09Q2VJU
FFQ12Q2VJU
FFQ15Q2VJU
FFQ18Q2VJU
zDecoration Panel
BYFQ60C2W1W
BYFQ60C2W1S
BYFQ60B3W1

Si091657EA
Removal Procedure 1
Table of Contents
1. Decoration Panel (BYFQ60C2W1W(S)) .................................................2
1.1 Suction Grille / Air Filter............................................................................2
1.2 Swing Motor .............................................................................................3
1.3 Decoration Panel......................................................................................6
2. Decoration Panel (BYFQ60B3W1)..........................................................8
2.1 Suction Grille / Air Filter............................................................................8
2.2 Decoration Panel / Swing Motor / Horizontal Blades..............................10
3. Indoor Unit Body ...................................................................................14
3.1 Drain Pan ASSY / Fan Motor / Drain Pump ...........................................14
3.2 Thermistors ............................................................................................18
4. Indoor Heat Exchanger .........................................................................19
Note: The illustrations may be slightly different depending on the model.

Decoration Panel (BYFQ60C2W1W(S)) Si091657EA
2Removal Procedure
1. Decoration Panel (BYFQ60C2W1W(S))
1.1 Suction Grille / Air Filter
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1 Pinch the 2 levers
simultaneously and pull
down the suction grille.
Clean the air filter using
a vacuum cleaner or wash it
with water. Do not use hot
water above 50°C.
After cleaning the air filter,
reset filter cleaning sign
according to the following
procedure.
• Wired remote controller
Select Reset Filter
Indicator from the Main
menu.
• Wireless remote controller
Press FILTER SIGN
RESET button.
2 Detach the hinges to
remove the suction
grille.
3 Release the 4 hooks
and remove the air
filter.
Air filters can be removed
without removing the suction
grille.
Lever
Suction grille (R23855)
(R23856)
Hinge
(R23857)
Air filter
Hook
Hook
Back view of suction grille
Clean the suction grille with
water using a softbristled
brush. Use neutral detergent
if necessary. Do not use hot
water above 50°C.

Si091657EA Decoration Panel (BYFQ60C2W1W(S))
Removal Procedure 3
1.2 Swing Motor
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 2 screws.
2 Pull the corner cover
ASSY toward the center
to release the 3 hooks.
When reassembling the
corner cover ASSY, make
sure to fit the corner hook
first, then the opposite side.
3 Remove the opposite
corner cover ASSY in
the same way.
(R23858)
(R25292)
Corner cover ASSY
Hook
Hook
(R23860)
(1)
(2)
(R23861)

Decoration Panel (BYFQ60C2W1W(S)) Si091657EA
4Removal Procedure
4 Remove the screw.
5 Pull out the motor
ASSY slightly, and
detach the shaft of the
horizontal blade.
6 Pull out the horizontal
blade from the motor
ASSY shaft.
Step Procedure Points
(R23862)
(R25293)
Horizontal blade
Shaft Motor ASSY
(R23864)
Shaft

Si091657EA Decoration Panel (BYFQ60C2W1W(S))
Removal Procedure 5
7 Disconnect the
connector for the swing
motor.
When reassembling, make
sure to attach the red
connector to the red side,
and the white connector to
the white side.
8 Remove the 2 screws
and release the swing
motor.
9 Pull to detach the swing
motor from the bearing.
10 Remove the remaining
3 swing motors in the
same way.
Step Procedure Points
(R23865)
Swing motor
Connector for
the swing motor
Red
White
(R23866)
(R23867)
Bearing
(R23868)

Decoration Panel (BYFQ60C2W1W(S)) Si091657EA
6Removal Procedure
1.3 Decoration Panel
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 2 screws.
2 Open the electrical box
cover.
3
4
Cut the clamp.
Disconnect the
connector [X36A] and
release the harness
from the groove.
[X36A]: decoration panel
When using wireless remote
controller, disconnect the
connector [X24A] on the
transmitter board.
(R23869)
Electrical box cover
(R23870)
[X36A] [X24A]
Clamp
Groove
(R25294)

Si091657EA Decoration Panel (BYFQ60C2W1W(S))
Removal Procedure 7
5
6
7
Remove the 4 screws
of the decoration panel.
Release the hook from
the temporary latch on
both sides.
Remove the decoration
panel.
Make sure that the
temporary latch is fixed to
prevent the decoration panel
from falling.
+Flocked hexagonal screws
It is possible to remove the
decoration panel without
removing the horizontal
blades and swing motors.
When reassembling, make
sure to match the drain side
and the piping side marks on
the decoration cover with the
position of the drain area
and piping area of the indoor
unit.
Step Procedure Points
T empo rary
latch
T
empo rary
latch
Hook
Decoration
panel
(R23872)
Back view
Drain side mark Piping side mark (R23874)
T empo rary latch
(R23873)

Decoration Panel (BYFQ60B3W1) Si091657EA
8Removal Procedure
2. Decoration Panel (BYFQ60B3W1)
2.1 Suction Grille / Air Filter
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1 Pinch the 2 levers
simultaneously and pull
down the suction grille.
Clean the air filter using a
vacuum cleaner or wash it
with water. Do not use hot
water above 50°C.
After cleaning the air filter,
reset filter cleaning sign
according to the following
procedure.
• Wired remote controller
Select Reset Filter
Indicator from the Main
menu.
• Wireless remote controller
Press FILTER SIGN
RESET button.
Clean the suction grille with
water using a softbristled
brush. Use neutral detergent
if necessary. Do not use hot
water above 50°C.
2 Unfasten the hooks and
remove the suction
grille.
Make sure to open the front
grille more than 45 degrees
to avoid breaking the hook.
(R23875)
Lever
Suction grille
(R23876)
Hook
(R23877)

Si091657EA Decoration Panel (BYFQ60B3W1)
Removal Procedure 9
3 Release the 4 hooks
and remove the air
filter.
Air filters can be removed
without removing the suction
grille.
Step Procedure Points
(R23878)
Hook
Hook
Air filter
Back view of suction grille

Decoration Panel (BYFQ60B3W1) Si091657EA
10 Removal Procedure
2.2 Decoration Panel / Swing Motor / 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 decoration
panel.
1 Remove the 2 screws
and open the electrical
box cover.
2
3
Cut the clamp.
Disconnect the
connectors [X36A] and
[X80A].
[X36A], [X80A] : decoration
panel
4 Release the harness
from the 2 hooks.
Electrical box cover
(R24068)
Clamp [X36A] [X80A]
(R23880)
Hook
(R23881)

Si091657EA Decoration Panel (BYFQ60B3W1)
Removal Procedure 11
5 Cut the 3 clamps.
Make sure that the
temporary latch is fixed to
prevent the decoration panel
from falling.
6
7
8
Remove the 4 screws
from the decoration
panel.
Remove the decoration
panel lever from the
temporary latch.
Remove the decoration
panel.
+Flocked hexagonal screws
When reassembling the
decoration panel, be sure to
fit the discharge side and the
pipe side correctly.
2. Remove the swing motor
and horizontal blades.
In case there is a panel
spacer attached, remove the
sealing material, and then
remove the panel spacer
beforehand.
1
2
Turn the decoration
panel over.
Remove the 12 screws.
Step Procedure Points
(R23882)
A
(R23883)
Clamp
Detailed view of A
(R23884)
Decoration panel
(R23885)
Temporary
latch
Decoration
panel lever
(R23886)
Back view of decoration panel

Decoration Panel (BYFQ60B3W1) Si091657EA
12 Removal Procedure
3 Remove the 4 blocking
pads, one by one.
4 Remove the 2 screws.
5 Pull out and remove the
swing motor ASSY.
When reassembling, make
sure the gears make contact
with each other.
Step Procedure Points
(R23887)
Blocking pad Blocking pad
Blocking pad
(R23888)
(R23889)
Swing motor
ASSY
(R23890)
Gear
(R23891)

Si091657EA Decoration Panel (BYFQ60B3W1)
Removal Procedure 13
6 Remove the 4 screws
of each interlock rod
(16 screws).
7 Lift the 4 horizontal
blades together with
connecting rod ASSYs.
The horizontal blades are
linked by interlock rods and
cannot be separated.
Step Procedure Points
A
(R23892)
Interlock
rod
Detailed view of A
(R23893)
Connecting rod ASSY
Connecting rod ASSY (R23894)

Indoor Unit Body Si091657EA
14 Removal Procedure
3. Indoor Unit Body
3.1 Drain Pan ASSY / Fan Motor / Drain Pump
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 drain pan
ASSY.
[X16A]: suction air thermistor
1
2
Cut the 2 clamps on the
control PCB.
Disconnect the
connector [X16A].
3
4
Cut the clamp fixing the
suction air thermistor
ASSY.
Remove the screw to
release the suction air
thermistor ASSY.
5 Remove the 4 screws
and remove the bell
mouth.
(R25296)
Clamp
Control PCB
X16A
Suction air thermistor ASSY
Clamp (R25295)
(R25297)
Bell mouth

Si091657EA Indoor Unit Body
Removal Procedure 15
6
7
Remove the drain
socket cap and drain
remaining water.
Remove the 4 screws
and remove the drain
pan.
Place a plastic sheet on the
floor to prevent wetting the
floor with remaining drain.
When reassembling, make
sure to attach the drain
socket cap.
2. Remove the fan and the
fan motor.
Nut size: M6
1 Remove the nut, and
then the fan.
2 Remove the 3 nuts, and
then the fan motor.
Nut size: M6
Step Procedure Points
Drain socket cap Drain pan ASSY
(R25298)
Nut Fan
(R23898)
10 mm
(0.39 inch)
(R18954)
(R23899)
Fan
motor
Nut
Nut (R23900)
10 mm
(0.39 inch)
(R18954)

Indoor Unit Body Si091657EA
16 Removal Procedure
3. Remove the drain pump. When reassembling, make
sure to fix the clamps to the
metal part.
1 Cut the 2 clamps.
2 Remove the connectors
[X15A] and [X25A].
[X15A]: float switch
[X25A]: drain pump
3 Release the harness
from the slit.
Step Procedure Points
Clamp
(R23901)
[X15A] [X25A]
(R23902)
Slit
(R23903)

Si091657EA Indoor Unit Body
Removal Procedure 17
4
5
Cut the clamp.
Detach the hose.
6
7
Remove the 2 screws.
Remove the drain pump
and the float switch.
Step Procedure Points
Hose
Clamp
(R25299)
(R25300)
Drain pump
Float switch

Indoor Unit Body Si091657EA
18 Removal Procedure
3.2 Thermistors
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1 Disconnect the
connectors [X16A],
[X17A] and [X18A].
[X16A]: suction air thermistor
[X17A], [X18A]: heat exchanger
thermistors
When reassembling, clamp
the harnesses as shown
below.
2 Release the harness
from the 2 hooks.
Be careful not to lose the clip
for the thermistor.
3 Cut the 2 clamps and
remove the 2 heat
exchanger thermistors.
[X16A]
[X17A]
[X18A]
(R23907) (R23909)
Hook
(R23908)
Clip
(R24067)
Clamp
Thermistor Thermistor
(R23910)