Daikin ATC25QRV16 User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter / Non-Inverter
Wall Mounted Type
2.5/3.5/4.2 kW Class
Si041402EC

Service Manual
Removal Procedure
Indoor Unit
zCooling Only
ATC25QRV16
ATC35QRV16
ATC25RRV162
ATC35RRV161
ATC42RRV162
ATF35QRV16
ATF35RRV161
ATQ35QRV16
ATQ35RRV162
ATKM25QRV16
ATKM35QRV16
ATKM25RRV16
ATKM35RRV16
ATKP25QRV16
ATKP35QRV16
ATKP25RRV16
ATKP35RRV16
DTC25QRV16
DTC35QRV16
DTC25RRV162
DTC35RRV161
DTC42RRV162
DTF35QRV16
DTF35RRV161
DTQ35QRV16
DTQ35RRV162
DTKM25QRV16
DTKM35QRV16
DTKM25RRV16
DTKM35RRV16
DTKP25QRV16
DTKP35QRV16
DTKP25RRV16
DTKP35RRV16
FTC35PRV16
FTC25QRV16
FTC35QRV16
FTC35QRV161
FTC35QRV1615
FTC25RRV162
FTC35RRV161
FTC42RRV162
FTC35RRV1615
FTC42RRV1625
FTF35PRV16
FTF35QRV16
FTF35QRV161
FTF35QRV1625
FTF35RRV161
FTF35RRV1615
FTQ35PRV16
FTQ35QRV16
FTQ35QRV1625
FTQ35RRV162
FTQ35RRV1625
FTUF35RRV161
FTKH35QRV16
FTKH35RRV16
FTKM25PRV16
FTKM35PRV16
FTKM25QRV16
FTKM35QRV16
FTKM25RRV16
FTKM35RRV16
FTKP25PRV16
FTKP35PRV16
FTKP25QRV16
FTKP35QRV16
FTKP25RRV16
FTKP35RRV16

Si041402EC
Removal Procedure 1
Table of Contents
1. Air Filters .................................................................................................2
2. Front Panel..............................................................................................3
3. Front Grille ..............................................................................................4
4. Horizontal Blade / Vertical Blade ASSYs ................................................5
5. Electrical Box ..........................................................................................7
6. PCBs .......................................................................................................9
7. Drain Pan Unit / Swing Motor................................................................13
8. Indoor Heat Exchanger .........................................................................14
9. Fan Motor / Fan Rotor...........................................................................16
Note: The illustrations may be slightly different depending on the model.

Air Filters Si041402EC
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.
Be sure to insert the 2 hooks
when mounting the air filter.
1
2
Open the front panel to
the position where it
stops.
Pull out the air filter
downward and remove
it.
2. Remove the optional
filters.
The right and left filters are
interchangeable.
1 Unfasten the 4
projections to remove
the optional filter ASSY,
if available.
2 Unfasten the 5 hooks
and remove the
optional filter from its
frame.
Front panel
Air filter
Hook (R23415)
Optional filter ASSY
Projection Projection
(R22555)
(R23416)
Optional filter
Hook
Hook

Si041402EC 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 shaft to the
right and release the
left shaft.
When reassembling the front
panel, fit the right and left
shafts one by one into the
grooves and fully push them
into position.
3
4
Remove the right shaft
in the same way.
Remove the front panel.
Front panel
(R20053)
(R20054)
(R20055)

Front Grille Si041402EC
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 screw
cover, and then the
screw, on both sides.
Open the horizontal blade
before removing the screw
covers and screws.
When reassembling the
indoor unit, drive the screws
with the horizontal blade
opened or removed.
2 Unfasten the 3 hooks
on the top of the front
grille.
The convex marks (...) on
the front grille indicate the
position of the hooks.
When reassembling, make
sure that all the 3 hooks are
fastened.
When reassembling the front
grille, be sure not to get it
stuck on the spacer of the
drain pan.
3 Pull out the upper part
of the front grille and lift
up the lower part, and
then remove the front
grille.
Screw cover (R20056)
Hook
(R20057)
(R12715)
(R20058)

Si041402EC Horizontal Blade / Vertical Blade ASSYs
Removal Procedure 5
4. Horizontal Blade / 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. Remove the horizontal
blade.
1 Unfasten the center
shaft while bending the
horizontal blade
slightly.
2 Unfasten the left shaft. Installation 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.
3 Unfasten the right shaft
and remove the
horizontal blade.
Horizontal blade (R22547)
(R20060)
(R20061)

Horizontal Blade / Vertical Blade ASSYs Si041402EC
6Removal Procedure
2. Remove the vertical blade
ASSYs.
Slide the front hooks to the
right/left to unfasten easily.
1 Unfasten the 2 hooks
on the front.
2 Unfasten the 3 hooks of
the vertical blade ASSY
by pressing them with a
flat screwdriver.
3
4
Remove the vertical
blade ASSY.
Remove the other
vertical blade ASSY in
the same way.
Each vertical blade ASSY
has 6 fins. It is not possible
to replace the fins
individually.
The vertical blade ASSY is
not marked for difference
between right and left.
Step Procedure Points
Hook
(R20062)
Hook
(R20063)
(R20064)

Si041402EC Electrical Box
Removal Procedure 7
5. 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
then the service cover.
2
3
Remove the screw, and
then the wire fixture.
Remove the 4 screws
on the terminal board
and disconnect the
connecting wire.
4
5
Disconnect the 3
connectors.
Release the harnesses
from the hooks.
(a) fan motor:
[S1] or [CN_FAN]
(b) swing motor:
[S6] or [CN_STP]
(c) fan motor (Hall IC):
[S7] or [CN101]
Service cover
(R20065)
Wire fixture Terminal board
(R20066)
Connecting wire
(a)
(b)
(c)
Hook
Hook
(R23417)

Electrical Box Si041402EC
8Removal Procedure
6 Remove the screw, and
then the drip proof
plate.
7
8
Pull out the indoor heat
exchanger thermistor.
Remove the screw and
detach the earth/ground
wire.
Be careful not to lose the clip
for the thermistor.
9
10
Remove the screw of
the electrical box.
Lift up and pull the
electrical box.
11 Unfasten the hook at
the top by pressing it
from above and remove
the electrical box.
Step Procedure Points
Drip proof plate
(R20068)
Indoor heat
exchanger
thermistor
Earth/ground
wire
(R20983)
Clip
(R11234)
Electrical box
(R20070)
(R20071)
Hook

Si041402EC PCBs
Removal Procedure 9
6. PCBs
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 shield plate.
1 Unfasten the hook on
the right side of the
electrical box.
2 Unfasten the 2 hooks
on the top and remove
the shield plate.
2. Remove the electrical box
cover.
Some models have [COMP],
[L] and [N] instead of [S2].
1 Disconnect the
connector [S2] for the
terminal board.
Hook
(R20072)
Hook
Shield plate
(R23418)
(R20074)
Connector(s)

PCBs Si041402EC
10 Removal Procedure
2
3
Unfasten the 3 hooks.
Slide the electrical box
cover to the left and
remove it.
3. Remove the signal
receiver unit.
When reassembling the
signal receiver unit, make
sure the 2 lower hooks are
also securely fastened.
1 Unfasten the upper
hook and remove the
signal receiver unit.
Step Procedure Points
Hook
Electrical
box cover
(R23419)
Hook
Hook
Signal receiver
unit
(R20076)
(R20077)

Si041402EC PCBs
Removal Procedure 11
4. Remove the display/
signal receiver PCB.
1
2
Turn over the signal
receiver unit.
Unfasten the 3 hooks
and remove the display/
signal receiver PCB.
3 Disconnect the
connector [S27].
Some models have
[CN_MB] instead of [S27].
5. Remove the
INTELLIGENT EYE
sensor PCB.
Some models have no
INTELLIGENT EYE sensor
PCB.
1 Remove the
INTELLIGENT EYE
fixing plate.
2 Unfasten the 4 hooks
and remove the
INTELLIGENT EYE
sensor PCB.
Step Procedure Points
Hook
Hook
Display/signal
receiver PCB
(R23420)
Connector
(R20079)
INTELLIGENT
EYE fixing plate
(R20080)
Hook
Hook
INTELLIGENT
EYE sensor PCB
(R20081)

PCBs Si041402EC
12 Removal Procedure
3 Disconnect the
connector [S36].
[S36]: control PCB
6. Remove the control PCB. When reassembling the
control PCB, make sure the
2 upper hooks are also
securely fastened.
1
2
Unfasten the 2 lower
hooks.
Lift up the bottom of the
control PCB and pull it
out.
Step Procedure Points
[S36]
(R20082)
(R20083)
Hook
Hook
Control PCB

Si041402EC Drain Pan Unit / Swing Motor
Removal Procedure 13
7. Drain Pan Unit / 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 drain pan
unit.
When reassembling, make
sure that the hook at the left
side is fitted in the groove.
1 Remove the screw at
the right side of the
drain pan unit.
2
3
Press the right side of
the drain pan unit and
twist the left side.
Remove the drain pan
unit from the indoor
unit.
2. Remove the swing motor.
1 Remove the screw of
the swing motor.
2 Remove the shaft, and
then the swing motor.
(R20084)
Drain pan unit
(R20085)
(R23421)
Shaft
Swing motor
(R20087)

Indoor Heat Exchanger Si041402EC
14 Removal Procedure
8. 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 Remove the 2 screws
which fix the indoor unit
to the installation plate.
Insertion of a wooden base
may facilitate the removing
work.
Place a plastic sheet around
the drain pan to prevent
wetting the floor with
remaining drain.
If the drain hose is
embedded in the wall,
disconnect beforehand.
2
3
Disconnect the liquid
and gas pipes.
Remove the indoor unit
from the installation
plate.
Carry out the removal work
with 2 wrenches.
When the pipings are
disconnected, protect the
openings of both the pipe
and the unit from moisture
intrusion.
4 Unfasten the hook of
the piping fixture at the
back of the indoor unit
and pull out the piping.
(R20088)
(R20089)
Piping fixture
(R20090)

Si041402EC Indoor Heat Exchanger
Removal Procedure 15
5 Slightly pull out the
auxiliary piping.
6 Unfasten the left hook
with a flat screwdriver.
When reassembling the
indoor heat exchanger,
make sure that the hooks
are fastened.
7 Unfasten the right hook.
8 Lift up and remove the
indoor heat exchanger.
Step Procedure Points
Auxiliary piping
(R23422)
Hook
(R23423)
Left view
(R23424)
Hook
Right view
Indoor heat exchanger
(R20094)

Fan Motor / Fan Rotor Si041402EC
16 Removal Procedure
9. 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.
Release the fan motor
lead wire from the 3
hooks and remove the
right side 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.
3
4
Remove the 2 screws
of the fan motor fixing
plate.
Remove the fan motor
fixing plate.
5 Loosen the screw and
remove the fan motor
and the fan rotor.
(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).
Right side plate Hook
Hook (R20095)
5 mm (0.2 inch)
Side face of rotor
(R18879)
Side face of
bottom frame
Fan motor
fixing plate
(R20096)
(R9582)
Fan motor
(R20097)
Fan rotor
(R20098)

Revision History
Month / Year Version Revised contents
04 / 2014 Si041402E First edition
10 / 2014 Si041402EA Model addition: FTF35PRV16
10 / 2015 Si041402EB Model addition: ATC35QRV16, ATF35QRV16, ATQ35QRV16, DTC35QRV16,
DTF35QRV16, DTQ35QRV16, FTC35QRV16, FTC35QRV161,
FTF35QRV16, FTF35QRV161, FTQ35QRV16, ATKM25/35QRV16,
ATKP25/35QRV16, DTKM25/35QRV16, DTKP25/35QRV16,
FTKM25/35QRV16, FTKP25/35QRV16
05 / 2016 Si041402EC Model addition: ATC25QRV16, ATC25RRV162, ATC35RRV161, ATC42RRV162,
ATF35RRV161, ATKM25/35RRV16, ATKP25/35RRV16,
ATQ35RRV162, DTC25QRV16, DTC25RRV162, DTC35RRV161,
DTC42RRV162, DTF35RRV161, DTQ35RRV162, DTKM25/35RRV16,
DTKP25/35RRV16, FTC25QRV16, FTC35QRV1615,
FTC25/42RRV162, FTC35RRV161, FTC35RRV1615,
FTC42RRV1625, FTF35QRV1625, FTF35RRV161, FTF35RRV1615,
FTQ35RRV162, FTQ35QRV1625, FTQ35RRV1625, FTUF35RRV161,
FTKH35QRV16, FTKH35RRV16, FTKM25/35RRV16,
FTKP25/35RRV16

Head Office:
Umeda Center Bldg., 2-4-12, Nakazaki-Nishi,
Kita-ku, Osaka, 530-8323 Japan
Tokyo Office:
JR Shinagawa East Bldg., 2-18-1, Konan,
Minato-ku, Tokyo, 108-0075 Japan
http://www.daikin.com/products/ac/
All rights reserved
c
Warning
zDaikin products are manufactured for export to numerous countries throughout the world. Prior to
purchase, please confirm with your local authorised importer, distributor and/or retailer whether this
product conforms to the applicable standards, and is suitable for use, in the region where the product
will be used. This statement does not purport to exclude, restrict or modify the application of any local
legislation.
zAsk a qualified installer or contractor to install this product. Do not try to install the product yourself.
Improper installation can result in water or refrigerant leakage, electrical shock, fire or explosion.
zUse only those parts and accessories supplied or specified by Daikin. Ask a qualified installer or
contractor to install those parts and accessories. Use of unauthorised parts and accessories or
improper installation of parts and accessories can result in water or refrigerant leakage, electrical
shock, fire or explosion.
zRead the user's manual carefully before using this product. The user's manual provides important
safety instructions and warnings. Be sure to follow these instructions and warnings.
If you have any enquiries, please contact your local importer, distributor and/or retailer.
Cautions on product corrosion
1. Air conditioners should not be installed in areas where corrosive gases, such as acid gas or alkaline gas, are produced.
2. If the outdoor unit is to be installed close to the sea shore, direct exposure to the sea breeze should be avoided. If you need to install
the outdoor unit close to the sea shore, contact your local distributor.
Dealer
zSpecifications, designs and other content appearing in this brochure are current as of May 2016 but subject to change without notice. Si041402EC
05/2016 AK.B