Daikin ATKC18RV2S User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter
Wall Mounted Type
4.2/5.0/6.0/7.1 kW Class
15000/18000/24000 Btu/h Class
Si041255EH

Service Manual
Removal Procedure
Indoor Unit
zCooling Only zHeat Pump
ATKC18RV2S FTKS15JV2S FTXS60GV1B
ATKC24RV2S FTXS71GV1B
FTKS42JVMG
CTKM60PV14 FTKS42JVMG9 FTXS50KAVMA
FTXS60KAVMA
CTKM24PV2S FTKS50GVM4 FTXS71KAVMA
FTKS60GVM4
FTKC18NV2S FTKS71GVM4
FTKC24NV2S
FTKS50GVMV
FTKC50NVM FTKS60GVMV
FTKC60NVM FTKS71GVMV
FTKC50NVM4
FTKC60NVM4 FTKS50KAVMA
FTKC50NVMM FTKS60KAVMA
FTKC60NVMM FTKS71KAVMA
FTKC50NVMV
FTKC60NVMV FTKV50NVM
FTKV60NVM
FTKD42GVM9 FTKV50NVM4
FTKD50GVM9 FTKV60NVM4
FTKD60GVM9 FTKV50NVMM
FTKD71GVM9 FTKV60NVMM
FTKV50NVMV
FTKD42GVMV FTKV60NVMV
FTKD50GVMV
FTKD60GVMV
FTKD71GVMV
FTKD42HVMV
FTKD50HVMV
FTKD60HVMV
FTKD71HVMV
FTKM60PVM

Si041255EH
Removal Procedure 1
Table of Contents
1. Air Filters .................................................................................................2
2. Front Panel..............................................................................................3
3. Front Grille ..............................................................................................4
4. Horizontal Blades ....................................................................................5
5. Vertical Blade ASSYs..............................................................................6
6. Electrical Box ..........................................................................................7
7. PCBs .......................................................................................................9
8. Swing Motors ........................................................................................12
9. Indoor Heat Exchanger .........................................................................14
10.Fan Motor / Fan Rotor...........................................................................16
Note: The illustrations may be slightly different depending on the model.

Air Filters Si041255EH
2Removal Procedure
1. Air 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 filters. The air filter is not marked
for difference between the
right and left sides.
Insert the air filter with the
"FRONT" mark faced up.
When reassembling, insert
the air filter along the guides.
1 Open the front panel to
the position where it
stops.
2 Pull out the air filter
downward and remove
it.
Be sure to fit the 2 bottom
hooks when installing the air
filter.
2. Remove the Titanium
apatite photocatalytic air-
purifying filters.
The right and left filters are
interchangeable.
Bend the air filter and
release the projections from
the air filter frame.
1 Remove the Titanium
apatite photocatalytic
air-purifying filter ASSY
from the back of the air
filter.
2 Unfasten the 5 hooks
and remove the
Titanium apatite
photocatalytic air-
purifying filter from the
frame.
Front panel
(R11322)
Air filter
Hook
(R11323)
Air filter
(R17672)
Titanium apatite photocatalytic
air-purifying filter ASSY
Projection
(R18808)
Titanium apatite photocatalytic
air-purifying filter
Hook Hook

Si041255EH Front Panel
Removal Procedure 3
2. 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 Open the front panel
over the position where
it stops.
2 Slide the left rotary
shaft to the right and
release it.
When reassembling the front
panel, fit the right and left
rotary shafts one by one into
the grooves and fully push
them into position.
3 Slide the right rotary
shaft to the left and
release it.
4 Remove the front panel.
(R23310)
Front panel
(R11328)
(R11329)
(R18792)
Front panel

Front Grille Si041255EH
4Removal Procedure
3. 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 3 screws
of the front grille.
2 Unfasten the 3 hooks
on the top of the front
grille.
The convex marks (...) on
the front panel indicate the
position of the hooks.
3 Pull out the upper part
of the front grille, lift up
the lower part, and then
remove the front grille.
When reassembling, make
sure that the 3 hooks are
fastened.
(R11330)
Front grille
(R17673)
Left hook
Center hook
Right hook
(R17674)
(R12715)
(R11334)

Si041255EH Horizontal Blades
Removal Procedure 5
4. 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 Open the horizontal
blades.
When reassembling, mount
the large horizontal blade to
the upper position and the
small horizontal blade to the
lower position.
2 Release the left shaft of
the horizontal blade
(large).
3 Release the right shaft
of the horizontal blade
(large).
Reassembling procedure
1. Fit the horizontal blade to the
right shaft first. Make sure to
rotate the horizontal blade so
the shaft fits correctly.
2. Fit the horizontal blade to the
center and left shafts.
4
5
Release the 2 center
shafts and remove the
horizontal blade (large).
Remove the horizontal
blade (small) in the
same way.
Horizontal blade (small)
Horizontal blade (large)
(R11335)
Left shaft
(R11336)
Right shaft
(R23405)
Center shaft
(R2765)

Vertical Blade ASSYs Si041255EH
6Removal Procedure
5. Vertical Blade ASSYs
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1 Release the right and
left shafts.
Some models have fan
guards. Remove the fan
guards beforehand.
The unit has 3 sets of
vertical blade ASSY linked to
one another with interlock
rods.
For models which have no
swing motor for vertical
blades, the 3 sets of vertical
blade ASSY are not
interlinked.
2 Unfasten the 3 hooks
for each set of vertical
blade ASSY (9 hooks).
3 Pull out the vertical
blade ASSYs to the
right and remove them.
Vertical blade ASSY
(R13512)
Hook
(R13513)
(R11339)

Si041255EH Electrical Box
Removal Procedure 7
6. Electrical 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 screw and
remove the service
cover.
2 Remove the screw and
remove the drip proof
plate.
3
4
5
6
Pull out the indoor heat
exchanger thermistor.
Remove the screw of
the earth / ground wire.
Remove the screw of
the wire fixture.
Remove the 4 screws
of the connecting wires.
Be careful not to lose the clip
of the thermistor.
Service cover (R17675)
Drip proof
plate
(R11343)
Indoor heat exchanger thermistor
Earth / ground wire
Connecting
wire
Wire
fixture
(R18966)
Clip
(R11268)

Electrical Box Si041255EH
8Removal Procedure
7
8
Disconnect the
connectors [S1] [S41]
and release the
harnesses from the
hooks.
Remove the screw of
the electrical box.
[S1]: fan motor
[S41]: swing motor(s)
9
10
Unfasten the hook at
the back of the
electrical box.
Pull out and remove the
electrical box.
When reassembling, make
sure the hook at the back of
the electrical box is securely
fastened.
Step Procedure Points
[S41]
[S1] Hook
(R18794)
(R17677)
Hook
Electrical box

Si041255EH PCBs
Removal Procedure 9
7. PCBs
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1 Unfasten the 2 hooks
on the top and remove
the shield plate.
2 Unfasten the hook and
remove the signal
receiver unit.
3 Unfasten the 5 hooks
and remove the display
PCB.
Shield plate
(R17925)
Hook
Hook
Signal receiver unit
(R22554)
Display
PCB
(R11351)

PCBs Si041255EH
10 Removal Procedure
4 Disconnect the
connector [S49] from
the display PCB.
[S49]: control PCB
5
6
Unfasten the 4 hooks
and remove the
INTELLIGENT EYE
sensor PCB.
Disconnect the
connector [S36].
Some models have no
INTELLIGENT EYE sensor
PCB.
[S36]: control PCB
7
8
Unfasten the 2 hooks
and remove the signal
receiver PCB.
Disconnect the
connector [S48].
[S48]: control PCB
Step Procedure Points
(R11352)
[S49]
INTELLIGENT EYE
sensor PCB
(R11353)
[S36]
Signal receiver
PCB
(R11354)
[S48]

Si041255EH PCBs
Removal Procedure 11
9 Pull out all the
harnesses from the
terminal board.
10 Unfasten the 3 hooks
and remove the control
PCB.
Step Procedure Points
(R11355)
Terminal
board
Hook
(R13514)
Control PCB
Hook

Swing Motors Si041255EH
12 Removal Procedure
8. Swing Motors
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 swing motor
for horizontal blades.
1
2
Remove the screw of
the swing motor.
Remove the swing
motor for horizontal
blades.
2. Remove the swing motor
for vertical blades.
Some models have no swing
motor for vertical blades.
Remove the swing shaft.
1 Remove the swing shaft
on the right side.
2 Pull out the drain hose. Be careful not to wet the
floor with the drained water.
(R23356)
Swing motor
for horizontal
blade
(R11361)
Swing shaft
(1) Unfasten the hook.
(2) Pull out the swing shaft.
(R12896)
Drain hose
(R11357)

Si041255EH Swing Motors
Removal Procedure 13
3 Remove the 2 screws
and detach the swing
motor unit.
4 Remove the 2 screws
and remove the swing
motor.
The assembly has 6 hooks.
Step Procedure Points
(R13624)
Swing motor
unit
(R22544)
Hook
Hook
Swing motor
Hook

Indoor Heat Exchanger Si041255EH
14 Removal Procedure
9. Indoor Heat Exchanger
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
In pump-down work, be sure to stop the compressor before disconnecting the
refrigerant pipe. If the refrigerant pipe is disconnected with the compressor operating
and the stop valve open, air may be sucked in and may generate an over-pressure in
refrigeration cycle, thus resulting in pipe rupture or accidental injury.
When removing or reinstalling the indoor heat exchanger, be sure to wear gloves or
wrap the indoor heat exchanger with cloths. (You may be injured by the fins.)
Caution Be sure to conduct pump down operation before disassembling the refrigerant pipe.
If the refrigerant leaks, repair the spot of leaking, then collect all refrigerant from the
unit. After conducting vacuum drying, recharge proper amount of refrigerant.
From the viewpoint of global environmental protection, make sure to use a vacuum
pump for air purging.
Step Procedure Points
1
2
Pull out the drain hose.
Unscrew the flare nut
for both gas piping and
liquid piping and
disconnect them.
Hold the indoor unit up with a
piece of wood.
Place a plastic sheet under
the drain pan to prevent
wetting the floor with
remaining drain.
If the drain hose is
embedded in the wall,
disconnect the drain hose
beforehand.
Carry out the removal works
with 2 wrenches.
3 Detach the indoor unit
from the installation
plate.
When the pipings are
disconnected, protect the
open ends of both the pipe
and the unit from moisture
intrusion.
4 Unfasten the hook and
remove the piping
fixture on the back of
the indoor unit.
(R18899
)
Gas piping
Drain hose
Liquid piping
(R17679)
(R11366)
Piping fixture

Si041255EH Indoor Heat Exchanger
Removal Procedure 15
5 Slightly pull out the
auxiliary piping.
6 Unfasten the 2 hooks
on the left side.
7 Push the 2 hooks on
the right side and
unfasten them.
8 Pull the indoor heat
exchanger to the front
side and unfasten the
hooks completely, and
then lift the indoor heat
exchanger.
Step Procedure Points
(R11367)
Auxiliary piping
Hook
(R17680)
Hook
(R13517)
(R17681)
Indoor heat exchanger

Fan Motor / Fan Rotor Si041255EH
16 Removal Procedure
10.Fan Motor / Fan Rotor
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1
2
Remove the 2 screws
of the right side plate.
Lift the right side plate
and remove it.
3 Remove the screw and
remove the fan motor
fixing plate.
When reassembling the fan
motor and the fan rotor,
provide as much as 5 mm
(0.2 inch) of play between
the side face of the rotor and
the bottom frame.
(1) Insert the fan motor allowing
for approx. 5 mm (0.2 inch)
of play.
(2) Tighten the fan rotor screw
until it stops. Then give the
screw one more turn.
(3) If the fan rotor rotates
appropriately, tighten the
screw completely.
(4) If not, repeat the procedure
from (1).
4 Loosen the screw of the
fan rotor.
5 Remove the fan motor.
Right side
plate
(R17682)
Fan motor fixing plate
(R11373)
5 mm (0.2 inch)
Side face of rotor
(R18879)
Side face of
bottom frame
(R9582)
Fan rotor
(R18245)
Fan motor
(R11375)

Si041255EH Fan Motor / Fan Rotor
Removal Procedure 17
6 Remove the fan rotor.
7 Remove the 2 screws
and remove the left side
plate.
8 The bearing is made of
rubber. Push it inward
and remove it.
Step Procedure Points
Fan rotor
(R11376)
Left side plate
(R22545)
Bearing
(R11378)

Revision History
Month / Year Version Revised contents
09 / 2012 Si041255 First edition
11 / 2012 Si041255_A Model addition: FTXS60/71GV1B
04 / 2013 Si041255_B Model addition: FTKS15JV2S, FTKS42JVMG
12 / 2013 Si041255EC Model addition: FTKS50/60/71GVM4, FTKS50/60/71GVMV, FTKS42JVMG9
04 / 2014 Si041255ED Model addition: FTKD42/50/60/71GVM9, FTKD42/50/60/71HVMV
07 / 2014 Si041255EE Model addition: FTKC18/24NV2S, FTKC50/60NVM, FTKC50/60NVM4,
FTKC50/60NVMM, FTKC50/60NVMV, FTKV50/60NVM,
FTKV50/60NVM4, FTKV50/60NVMM, FTKV50/60NVMV
02 / 2015 Si041255EF Model addition: FTKM60PVM
10 / 2015 Si041255EG Model addition: CTKM60PV14, CTKM24PV2S
04 / 2016 Si041255EH Model addition: ATKC18/24RV2S