Daikin FVKS25BAVMB User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter
Floor Standing Type
2.5/3.5 kW Class
Si06-763

Service Manual
Removal Procedure
Indoor Unit
zCooling Only zHeat Pump
FVKS25BAVMB FVXS25BAVMB
FVKS35BAVMB FVXS35BAVMB

Si06-763
Removal Procedure 1
Table of Contents
1. Removal of the Air Filter / Front Panel ....................................................2
2. Removal of the Horizontal Blade.............................................................5
3. Removal of the Electrical Box .................................................................6
4. Removal of the PCB................................................................................9
5. Removal of the Heat Exchanger ...........................................................11
6. Removal of the Fan Rotor / Fan Motor..................................................13
Note: The illustrations may be slightly different depending on the model.

Removal of the Air Filter / Front Panel Si06-763
2Removal Procedure
1. Removal of the Air Filter / Front Panel
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1Appearance
Enlarged illustration
shows operation
panel section.
Operation panel
2Remove the front panel
from the unit.
Push on the left and
right upper parts of the
panel marked with
“PUSH” to open the
front panel.
Top discharge port
Front panel
(Suction port)
Bottom discharge port
Signal receiving section
(R2604)
Motion of push lock
When push
the knob, the
lock plate
draws in.
When push
it again, the
plate comes
out. (R2605)
Push lock
(R2606)

Si06-763 Removal of the Air Filter / Front Panel
Removal Procedure 3
3Press down the 2
hooks located at left
and right side upper
parts of the air filter,
then bend slightly the
air filter to remove it.
4Unhook the chain.
Step Procedure Points
(R2607)
Chain
(R2608)

Removal of the Air Filter / Front Panel Si06-763
4Removal Procedure
5Undo the 3 hooks on
the bottom of the front
panel.
Mounting screw M4 × 16
6Loosen the 4 screws to
take out the front grille.
Step Procedure Points
Hooks
(three locations)
(R2609)
Hooks
<Main unit side>
(R2611)
(R2610)

Si06-763 Removal of the Horizontal Blade
Removal Procedure 5
2. Removal of the Horizontal Blade
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1Open the horizontal
blade.
2Undo the supporting
bracket at the center
position.
3Bend the horizontal
blade slightly to undo
the shafts at left and
right side of the blade.
For installation, engage the
supporting bracket at center
of the blade after insert the
shafts at both ends to the
pivot holes.
(R2612)
(R2613)
(R2614)
(R2615)

Removal of the Electrical Box Si06-763
6Removal Procedure
3. Removal of the Electrical Box
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1Set the horizontal
blade in horizontal
position to take out the
front grille toward
yourself.
2Loosen the setting
screw to remove the
wire clamp.
3Disconnect the 4
connectors of the lead
wire.
(R2616)
(R2617)
Lead wire for swing motor
(R2618)

Si06-763 Removal of the Electrical Box
Removal Procedure 7
4Remove the room
temperature thermistor.
5Remove the heat
exchanger thermistor.
Be sure not to drop the
thermistor retaining spring
6Loosen the 2 screws to
remove the drip proof
plate.
Mounting screw M4 × 8
Step Procedure Points
Room
temperature
thermistor
(R2619)
Heat
exchanger
thermistor
(R2620)
Thermistor
retaining
spring
Heat
exchanger
thermistor (R2621)
Drip proof plate
(R2622)

Removal of the Electrical Box Si06-763
8Removal Procedure
7To remove the
electrical box, loosen
the 2 fixing screws and
pull out the box
forward.
Mounting screw M4 × 16
8The figure shows parts
in the electrical box.
Step Procedure Points
(R2623)
Indication lamps
Green Yellow Red
SW1
ON/OFF switch
Signal
receiving
plate
SW1
LED A Green
LED B Green
A
B
(R2624)

Si06-763 Removal of the PCB
Removal Procedure 9
4. Removal of the PCB
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1Loosen the fixing screw
to remove PCBs from
the electrical box.
Display PCB
2The figure shows the
control PCB (indoor
unit).
Power supply PCB
Service
PCB
Control PCB
(R2625)
S6 S23 S25 S302 S301
S201
S7S31S32S203
S21
(R2627)
Operation lamp Timer lamp
Main unit
ON/OFF
switch
Home Leave
Operation lamp
Signal receiving section
LED11 LED12 LED14
Green Yellow Red
SW1
(R2626)

Removal of the PCB Si06-763
10 Removal Procedure
3The figure shows the
power supply PCB
(indoor unit).
SW2
SW2-1 : unused
SW2-2 : unused
SW2-3 : unused
SW2-4 :
OFF - initial set
ON - limit upward air flow
4The figure shows the
service PCB.
Select to discharge air
only from top discharge port.
Select to discharge air
with automatic pattern
decided in accordance with
operation mode and
operation conditions.
It is recommendable to
select .
has been selected
before factory shipment.
Step Procedure Points
S202
S204
S8 (R2628)
SW2
Discharge
change-over
switch S26
(R2629)
<Discharge change-over switch>
(R2630)
Discharge
change-over

Si06-763 Removal of the Heat Exchanger
Removal Procedure 11
5. Removal of the Heat Exchanger
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
Conduct pump-down
operation and check that
gas has been purged
completely before starting
service work.
Mounting screw M4 × 16
1Loosen the 2 screws to
remove the top
discharge grille.
2Remove the heat
exchanger. Warning
If refrigerant gas leaks during
service work, ventilate work
area.
(Toxic gas may be generated
when refrigerant gas contacts
with flame.)
3Disconnect the flared
joint of liquid pipe using
2 wrenches.
14/17 double ended wrench
4Disconnect the flared
joint of gas pipe using 2
wrenches.
17/23 double ended wrench
Caution
Do not contaminate any gas
(including air) other than the
specified refrigerant (R-410A)
(Contaminating of air or other
gas causes abnormal
temperature rise in
refrigerating cycle, and this
results in pipe breakage or
personal injuries.)
After pipes are
disconnected, close all pipe
openings with caps to
prevent dust and moisture
from entering pipes.
(R2631)
(R2632)
(R2633)

Removal of the Heat Exchanger Si06-763
12 Removal Procedure
5Loosen the fixing screw
to remove the pipe
retaining plate of the
heat exchanger.
Push the pipe retaining
plate backward to undo
the hook, then open the
retaining plate using
straight edge of screw-
driver to remove the
plate.
Mounting screw M4 × 16
6Loosen the 2 screws
located at left side of
the heat exchanger.
Mounting screw M4 × 16
7Pull left side of the heat
exchanger (1) toward
yourself, slide to right
to undo the hook (2)
and remove the heat
exchanger.
Caution
When removing or
reinstalling heat exchanger,
be sure to wear protective
gloves or wrap heat
exchanger with cloths. (Fins
can cut fingers.)
Step Procedure Points
Pipe
retaining
plate
(R2634)
Hooks
(R2635)
Hook
(R2636)
(1)
(2)

Si06-763 Removal of the Fan Rotor / Fan Motor
Removal Procedure 13
6. Removal of the Fan Rotor / Fan Motor
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1For removal of the
drain pan, disconnect
the drain hose, then
loosen the 2 screws
located at left and right
sides.
Be careful not to wet the
floor with drain water.
Disengage harness for drain
pan from right side hook.
2Remove the drain pan. This swing motor is for down
flow shutter.
3To remove the swing
motor on discharge
port of the drain pan,
loosen the 2 fixing
screws.
(R2637)
(R2638)
Distributing louver (R2639)

Removal of the Fan Rotor / Fan Motor Si06-763
14 Removal Procedure
4Loosen the 6 screws (3
for the upper side
motor and 3 for the
bottom one) to remove
the fan motors.
Short lead wire: for the upper
fan motor
Long lead wire: for the
bottom fan motor
Mounting screw M4 × 16
5Remove the motors
and cross flow fans.
Loosen the fixing screw to
separate the fan and motor.
6To remove the casing,
loosen the 4 screws at
front side and the other
4 screws at rear side.
Casing mounting screw
Front: M4 × 16
Rear: M4 × 14
Condition : Casing
Protruded : Not to be removed
Semi-sink : To be removed
Sink : Not to be removed
Step Procedure Points
(R2640)
(R2641)
(R2642)

Revision History
Month / Year Version Revised contents
07 / 2013 Si06-763 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.
Dealer
z
Specifications, designs and other content appearing in this brochure are current as of July 2013 but subject to change without notice.
Si06-763
07/2013 AK.B