Daikin FH26NUV14 User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Non-Inverter
Ceiling Suspended Type
2.5/3/4/5/6 HP Class
Si241304

Service Manual
Removal Procedure
Indoor Unit
Indoor Models
zCooling Only
FH21NUV14
FH26NUV14
FH36NUV14
FH42NUV14
FH48NUV14
FH36NUV2S
FH42NUV2S
FH48NUV2S

Si241304
Removal Procedure 1
Table of Contents
1. Procedure to Remove Air Filter and Suction Grille .................................2
2. Procedure to Remove Electrical Parts and PCB.....................................3
3. Procedure to Remove Horizontal Blade..................................................5
4. Procedure to Remove Fan Rotor and Motor ...........................................6
5. Procedure to Remove Fan Bearing.........................................................8
6. Procedure to Remove Bottom Panel and Drain Pan...............................9
7. Procedure to Remove Swing Motor ......................................................10

Procedure to Remove Air Filter and Suction Grille Si241304
2Removal Procedure
1. Procedure to Remove Air Filter and Suction Grille
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1Press the 2 tabs and
open the suction grilles.
2Press the air filter
installation panel from 2
places in the direction
of the arrow, and pull
the air filter out toward
yourself.
3Grip the suction grille
hinge strongly and
remove the suction
grille.
Suction grille
hinge

Si241304 Procedure to Remove Electrical Parts and PCB
Removal Procedure 3
2. Procedure to Remove Electrical Parts and PCB
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1Loosen the 2 screws of
the control box cover
and remove the control
box cover.
2Remove the 2 screws
of the control box.
3Pull down the control
box and let it hang by
the 2 locations in the
rear. Electrical parts
can now be removed.
Control box cover
Control box
Rear panel
Control box

Procedure to Remove Electrical Parts and PCB Si241304
4Removal Procedure
4Disconnect all
connector mounted on
the PCB.
5Remove the PCB
installation screw.
(4 Point)
Step Procedure Points

Si241304 Procedure to Remove Horizontal Blade
Removal Procedure 5
3. Procedure to Remove Horizontal Blade
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1Gently bend the support
plate located at the
center of the horizontal
blade, and detach the
center shaft.
(2 shafts provided on
Types 36, 42 and 48.)
2Then gently bend the
center of the horizontal
blade, and take both
the end shafts out of
their bearings.
∗When removing the
horizontal blade from the
bearings at both ends, be
careful not to get the blow
port thermal insulation
scratched.
Reassembling precautions
1The shaft at the right
end of the horizontal
blade is cut in D shape.
Fit this D-shaped end to
the D-profiled bearing.
Reattach the horizontal
blade at the right side
first.
Horizontal blade
D cut

Procedure to Remove Fan Rotor and Motor Si241304
6Removal Procedure
4. Procedure to Remove Fan Rotor and Motor
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1Press the 2 tabs of the
fan housing toward the
inside with your fingers,
and pull out the fan
housing.
2Loosen the 2 hexagon
set screws of the
intermediate bearing.
Fan housing
Intermediate
bearing

Si241304 Procedure to Remove Fan Rotor and Motor
Removal Procedure 7
3Slide the intermediate
bearing to the right and
remove the fan rotor
assy.
4Remove the 2 fan
motor fasteners.
5Remove the fan motor. ∗Finally reconnect the fan
motor connector, cover it
with the glass tube and
secure it with the tie-wrap.
Step Procedure Points

Procedure to Remove Fan Bearing Si241304
8Removal Procedure
5. Procedure to Remove Fan Bearing
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
∗Remove the fan rotor
according to the
procedures to remove the
fan rotor and fan motor.
1Remove the left side
panel installation screw.
2Slide the left side panel
toward the front of the
unit and remove.
3Remove the 2 bearing
installation screws and
remove the bearing.
Left side panel
Fan rotor
Left side panel
1
Left side panel
Bearing
2
3

Si241304 Procedure to Remove Bottom Panel and Drain Pan
Removal Procedure 9
6. Procedure to Remove Bottom Panel and Drain
Pan
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
5Remove the 7 bottom
panel installation
screws (2 each on the
left and right, 3 in the
rear), and remove the
bottom panel. Remove the rear surface screws
(2 each on the left and right),
and remove the center screw
while supporting the bottom
panel from underneath.
6Let down the rear of the
bottom panel, press out
toward the front
(removed from the
hooking part) and
remove.
7Remove the drain pan
retainer (2 screw).
Bottom plate

Procedure to Remove Swing Motor Si241304
10 Removal Procedure
7. Procedure to Remove Swing Motor
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work
Step Procedure Points
1Remove the screw from
the right side panel.
Slide the right side
panel toward the front
and detach it.
2Disconnect the
connector of swing
motor from PCB.
3Remove the screw from
the swing motor. The
swing motor has 2
projections on it. Lower
the swing motor and
take it out. Projections
D-shaped cut

Revision History
Month / Year Version Revised contents
01/2013 Si241304 First edition

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/global_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.
Organization:
DAIKIN INDUSTRIES, LTD.
AIR CONDITIONING MANUFACTURING DIVISION
Scope of Registration:
THE DESIGN/DEVELOPMENT AND MANUFACTURE OF
COMMERCIAL AIR CONDITIONING, HEATING, COOLING,
REFRIGERATING EQUIPMENT, HEATING EQUIPMENT,
RESIDENTIAL AIR CONDITIONING EQUIPMENT, HEAT
RECLAIM VENTILATION, AIR CLEANING EQUIPMENT,
COMPRESSORS AND VALVES.
Organization:
DAIKIN INDUSTRIES
(THAILAND) LTD.
Scope of Registration:
THE DESIGN/DEVELOPMENT
AND MANUFACTURE OF AIR
CONDITIONERS AND THE
COMPONENTS INCLUDING
COMPRESSORS USED FOR THEM
All of the Daikin Group’s business
facilities and subsidiaries in Japan
are certified under the ISO 14001
international standard for
environment management.
JMI-0107 JQA-1452
Dealer
z
Specifications, designs and other content appearing in this brochure are current as of January 2013 but subject to change without notice.
Si241304
01/2013 AK