Daikin ATC50QRV16 User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter / Non-Inverter
Wall Mounted Type
5.0/6.0 kW Class
Si041257EC

Service Manual
Removal Procedure
Indoor Unit
zCooling Only
ATC50QRV16 FTE50NRV16
ATC60QRV16 FTE60NRV16
ATC50RRV161
ATC50RRV162 FTEL50NRV16
ATC60RRV162 FTEL60NRV16
ATQ50QRV16 FTF50PRV16
ATQ60QRV16 FTF60PRV16
ATQ50RRV162
ATQ60RRV162 FTQ50PRV16
FTQ60PRV16
DTC50QRV16
DTC60QRV16 FTQ50QRV16
DTC50RRV161 FTQ60QRV16
DTC50RRV162 FTQ50QRV1625
DTC60RRV162 FTQ60QRV1625
FTQ50RRV162
DTQ50QRV16 FTQ60RRV162
DTQ60QRV16 FTQ50RRV1625
DTQ50RRV162 FTQ60RRV1625
DTQ60RRV162
FTKC50NRV16
FTC50PRV16
FTC60PRV16 FTKV50NRV16
FTKV60NRV16
FTC50QRV16
FTC60QRV16
FTC50QRV161
FTC60QRV161
FTC50QRV1615
FTC60QRV1615
FTC50RRV161
FTC50RRV1615
FTC50RRV162
FTC60RRV162
FTC60RRV1625

Si041257EC
Removal Procedure 1
Table of Contents
1. Air Filters / Front Panel / Horizontal Blade / Vertical Blade ASSYs ........2
2. Front Grille ..............................................................................................5
3. Electrical Box ..........................................................................................6
4. PCBs / Swing Motor ................................................................................8
5. Indoor Heat Exchanger .........................................................................10
6. Fan Motor / Fan Rotor...........................................................................12
Note: The illustrations may be slightly different depending on the model.

Air Filters / Front Panel / Horizontal Blade / Vertical Blade ASSYs Si041257EC
2Removal Procedure
1. Air Filters / Front Panel / 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 air filters. The 2 filters are
interchangeable.
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 reassembling the air
filter.
1
2
Open the front panel to
the position where it
stops.
Unfasten the 2 hooks
and remove the air
filter.
3 Remove the optional
filter from the back of
the air filter, if any.
2. Remove the front panel.
1 Open the front panel
over the position where
it stops.
2 Push 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.
(R19771)
Air filter
Front panel
Hook
Air filter
Optional filter
Hook
(R23395)
(R19772)
(R19773)

Si041257EC Air Filters / Front Panel / Horizontal Blade / Vertical Blade ASSYs
Removal Procedure 3
3
4
Remove the right shaft
in the same way.
Remove the front panel.
3. Remove the horizontal
blade.
1 Release the 2 center
shafts of the horizontal
blade.
2 Release the left shaft.
Step Procedure Points
(R19774)
(R19775)
Horizontal blade
(R19776)

Air Filters / Front Panel / Horizontal Blade / Vertical Blade ASSYs Si041257EC
4Removal Procedure
3
4
Release the right shaft.
Remove the horizontal
blade.
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. Remove the vertical blade
ASSYs.
1 Unfasten the 4 hooks of
the vertical blade ASSY
with a flat screwdriver.
2
3
Remove the vertical
blade ASSY.
Remove the other 2
vertical blade ASSYs
likewise.
Step Procedure Points
(R19777)
Hook
Vertical blade ASSY
(R19330)
(R19331)

Si041257EC Front Grille
Removal Procedure 5
2. 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 5 screws
of the front grille.
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.
3 Remove the front grille. When reassembling, make
sure all the 3 hooks are
fastened.
(R19778)
Front grille
Hook
(R19779)
(R12715)
(R19781)

Electrical Box Si041257EC
6Removal Procedure
3. 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 4 screws
on the terminal board
and disconnect the
connecting wire.
Remove the screw, and
then the wire fixture.
4 Unfasten the 3 hooks
and remove the
electrical box cover.
(R19782)
Service cover
(R19783)
(R19784)
Wire fixture
Terminal
board
Connecting
wire
(R19785)
Electrical box cover

Si041257EC Electrical Box
Removal Procedure 7
5
6
Remove the screw and
release the earth/
ground wire.
Pull out the indoor heat
exchanger thermistor.
The position of the indoor
heat exchanger thermistor
varies depending on the
model.
Be careful not to lose the clip
of the thermistor.
7 Disconnect the 3
connectors.
(a) fan motor:
[CN_FAN] or [S1]
(b) swing motor:
[CN_STP] or [S6]
(c) fan motor (Hall IC):
[CN101] or [S7]
8 Remove the screw of
the electrical box.
9 Lift up the electrical box
from the bottom frame
and remove the
electrical box.
Step Procedure Points
(R19786)
Earth/ground wire
Indoor heat
exchanger
thermistor
Clip
(R11268)
(R19787)
(a)
(b)
(c)
(R19788)
Electrical box
(R19789)

PCBs / Swing Motor Si041257EC
8Removal Procedure
4. PCBs / 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 control PCB.
1 Remove the screw of
the terminal board.
2
3
4
5
Release the earth/
ground wire and the
indoor heat exchanger
thermistor lead wire
from the groove.
Pull out the control PCB
from the electrical box.
Disconnect the
connector for the
display/signal receiver
PCB ([CN_DB] or
[S26]).
Remove the control
PCB.
(R19790)
Terminal board
(R23396)
Control PCB
Groove
Indoor heat
exchanger
thermistor lead
wire
Earth/ground
wire
Connector for display/signal
receiver PCB

Si041257EC PCBs / Swing Motor
Removal Procedure 9
2. Remove the display/
signal receiver PCB.
1 Unfasten the 2 hooks
and remove the display/
signal receiver PCB
ASSY.
2
3
4
Unfasten the 3 hooks.
Disconnect the
connector for the
control PCB ([CN_MB]
or [S27]).
Remove the display/
signal receiver PCB.
3. Remove the swing motor.
1 Remove the screw, and
then the swing motor.
Step Procedure Points
(R23397)
Display/signal
receiver PCB
ASSY
Hook
Hook
(R23398)
Connector for
control PCB
Display/signal receiver PCB
(R19794)
(R19795)
Swing motor

Indoor Heat Exchanger Si041257EC
10 Removal Procedure
5. 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 nuts
for gas piping and liquid
piping.
Removal procedure is easier
if a wooden base is used to
incline the indoor unit.
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.
Carry out the removal works
with 2 wrenches.
When the pipings are
disconnected, protect the
openings of both the pipe
and the unit from moisture
intrusion.
3
4
Remove the 2 screws.
Detach the indoor unit
from the installation
plate.
5 Slightly bend the
auxiliary piping.
(R19796)
Gas piping
Drain hose
Liquid piping
(R19797)
(R19798)
Auxiliary
piping

Si041257EC Indoor Heat Exchanger
Removal Procedure 11
6 Remove the screw on
the left side.
When reassembling, fasten
the 3 hooks of the indoor
heat exchanger.
7
8
Remove the screw on
the right side.
Unfasten the hook on
the right side.
9 Lift up and remove the
indoor heat exchanger.
Step Procedure Points
(R19799)
(R19768)
Left side
(1) Insert the protrusion
into the gap of the
bottom frame.
(R19769)
Right side
(2) Fit the heat exchanger
plate into the slit of the
bottom frame.
(R19770)
Right side
(3) Fit the slit of the heat exchanger
plate into the bottom frame.
(R20349)
Hook
(R19800)
Indoor heat exchanger

Fan Motor / Fan Rotor Si041257EC
12 Removal Procedure
6. 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 Remove the 2 screws,
and then the right side
plate.
2 Remove the screw of
the fan rotor.
Right side
plate
(R19801)
(R19802)
Fan rotor

Si041257EC Fan Motor / Fan Rotor
Removal Procedure 13
3 Unfasten the hook and
remove the bottom
frame ASSY.
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.
4 Release the fan rotor
from the left groove.
(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).
5 Remove the fan motor.
Step Procedure Points
Bottom frame ASSY
Hook
(R20350)
5 mm (0.2 inch)
Side face of rotor
(R18879)
Side face of
bottom frame
(R19333) (R9582)
(R19334)
Fan motor
(R20351)

Revision History
Month / Year Version Revised contents
03 / 2014 Si041257E First edition
10 / 2014 Si041257EA Model addition: FTF50/60PRV16
10 / 2015 Si041257EB Model addition: ATC50/60QRV16, ATQ50/60QRV16, DTC50/60QRV16,
DTQ50/60QRV16, FTC50/60QRV16, FTC50/60QRV161,
FTQ50/60QRV16
05 / 2016 Si041257EC Model addition: ATC50RRV161, ATC50/60RRV162, ATQ50/60RRV162,
DTC50RRV161, DTC50/60RRV162, DTQ50/60RRV162,
FTC50/60QRV1615, FTC50RRV161, FTC50RRV1615,
FTC50/60RRV162, FTC60RRV1625, FTQ50/60QRV1625,
FTQ50/60RRV162, FTQ50/60RRV1625

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. Si041257EC
05/2016 AK.B