Fujitsu AUYA36LB Installation Instruction Sheet

SPLIT TYPE AIR CONDITIONER

INSTALLATION
INSTRUCTION SHEET

(PART No. 9378590014-07)

For authorized service personnel only.

DANGER

This mark indicates procedures which, if improperly performed, are most likely to result in the death of
or serious injury to the user or service personnel.

WARNING

This mark indicates procedures which, if improperly performed, might lead to the death or serious injury
of the user.

CAUTION

This mark indicates procedures which, if improperly performed, might possibly result in personal harm
to the user, or damage to property.

DANGER

Never touch electrical components immediately after the power supply has been turned off. Electrical shock may occur.
After turning off the power, always wait 5 minutes or more before touching electrical components.

This air conditioner uses new refrigerant HFC (R410A).

The basic installation work procedures are the same as conventional refrigerant models.
However, pay careful attention to the following points:

1 Since the working pressure is 1.6 times higher than that of conventional refrigerant models, some of the piping and

installation and service tools are special. (See the table below.)

Especially, when replacing a conventional refrigerant model with a new refrigerant R410A model, always replace the

conventional piping and fl are nuts with the R410A piping and fl are nuts.

2 Models that use refrigerant R410A have a different charging port thread diameter to prevent erroneous charging with

conventional refrigerant and for safety. Therefore, check beforehand. [The charging port thread diameter for R410A is
1/2 UNF 20 threads per inch.]

3 Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with refrigerant models. Also, when

storing the piping, securely seal the openings by pinching, taping, etc.

4 When charging the refrigerant, take into account the slight change in the composition of the gas and liquid phases, and

always charge from the liquid phase side whose composition is stable.

Special tools for R410A

Tool name Contents of change

Gauge manifold

Pressure is high and cannot be measured with a conventional gauge. To prevent erroneous mixing of other
refrigerants, the diameter of each port has been changed.
It is recommended the gauge with seals –0.1 to 5.3 MPa (–76 cmHg to 53 kgf/cm

2

) for high pressure. –0.1 to

3.8 MPa (–76 cmHg to 38 kgf/cm

2

) for low pressure.

Charge hose To increase pressure resistance, the hose material and base size were changed.

Vacuum pump A conventional vacuum pump can be used by installing a vacuum pump adapter.

Gas leakage detector Special gas leakage detector for HFC refrigerant R410A.

Cassette Type

1

STANDARD PARTS

The following installation parts are furnished.
Use them as required.

ACCESSORIES

Discharge Direction Setting

• The discharge direction can be selected as shown below.

SELECTING THE MOUNTING
POSITION

Especially, the installation place is very important for the split type air
conditioner because it is very diffi cult to move from place to place after
the fi rst installation.
Decide the mounting position together with the customer as follows:

WARNING

Select installation locations that can properly support
the weight of the indoor. Install the units securely so that
they do not topple or fall.

CAUTION

1 Do not install where there is the danger of combus-

tible gas leakage.

2 Do not install the unit near heat source of heat, steam,

or fl ammable gas.

3 If children under 10 years old may approach the unit,

take preventive measures so that they cannot reach
the unit.

(1) Install the indoor unit on a place having a suffi cient strength so that it

withstands against the weight of the indoor unit.

(2) The inlet and outlet ports should not be obstructed; the air should be

able to blow all over the room.
(3) Leave the space required to service the air conditioner.
(4) The ceiling rear height as shown in the fi gure.
(5) A place from where the air can be distributed evenly throughout the

room by the unit.
(6) A place from where drainage can be extracted outdoors easily.
(7) Install the unit where noise and vibrations are not amplifi ed.

INSTALLATION PROCEDURE

Install the air conditioner as follows:

* Select the most appropriate airfl ow direction from 3 or 4 directions ac-

cording to the shape of the room and the installation position.

* When changing the number of outlets, we recommend using the optional

AIR OUTLET SHUTTER PLATE KIT to close the outlet.

* For the specifi c closing pattern, please refer to the attached AIR OUTLET

SHUTTER PLATE KIT'S MANUAL. (Do so before installing the decora­tive panel as it will be installed on the body.)

* Be sure to make the function settings with the remote controller

according to the number of airfl ow outlets and the installed ceiling
height. (See 8 FUNCTION SETTING.)

(Continued to the next page)

(*1) This part is not furnished for AUT* series

OPTIONAL PARTS

PREPARATION BEFORE INSTALLATION

2

3. INSTALLING DRAIN PIPE

INDOOR UNIT INSTALLATION

(1) Positions of the ceiling opening, hanging bolt pitch, piping and ducts.

(unit: mm)

• Ceiling opening and hanging bolt pitch.

• Refrigerant piping and drain piping positions.

• Airfl ow split-fl ow duct and fresh air inlet positions.

Note)

Conduct proper insulation when connecting the split-fl ow ducts and

fresh air inlet.

(2) Setting the positions of hanging bolt and ceiling opening.

• Use an installation template (packaging top surface) to set the
positions of the hanging bolt and ceiling opening and drill holes.

(3) Hanging structure.

• Select a strong structure for the hanging location.

• If necessary, reinforce the hanging bolt with quakeproof columnar

support material to prevent shaking.

• Use hanging bolts of M8-M10.

1. BODY INSTALLATION

1)

Install the attached washer and nut (prepared on site) onto the hanging bolt.

2) Hook the body onto the hanging bolt.

3) Adjust the dimensions of the ceiling surface from the body.

After installing the decorative panel, you can make fi ne adjustment

of the height of the body. For details, refer to the installation manual
of the decorative panel.

2. LEVELING

Using a level, or vinyl hose fi lled with water, fi ne adjust so that the body
is level.
Inclined installation so as the drain pipe side is higher may cause a mal­function of the fl oat switch, and may cause water leakage.

This product can be installed at a height of up to 4.2 m (30Type : 3.6 m).
However, if the heights of the ceiling is higher than 3.2 m or lower than 2.7 m,
it is necessary to set the position from remote controller.
(See 8 FUNCTION SETTING.)

Model No.

UTB

- *

UD

UTR - YDZC

UTY - LRH*A1

Exterior

Summary

Unit control is per­formed by wired

remote controller

Install the plate at outlet
when carrying out 3-way
direction operation.

Unit control is per­formed by wireless
remote controller.

Parts name

Wired
remote
controller

Air outlet
shutter
plate

Wireless
remote
controller
and I, R,
receiver
unit

5 - 10 mm

VP25

35 mm

20 mm

Note)
Check for drainage

Pour about 1 liter of water from the position shown in the diagram or from
the airfl ow outlet to the dew tray. Check for any abnormalities such as
strange noises and whether the drain pump functions normally.

Working procedure

1) Install the attached drain hose to the drain port of the body. Install the
hose band from the top of the hose within the graphic display area.

2) Use vinyl adhesive agent to glue the drain piping (PVC pipe VP25)
which is prepared on site or elbow socket.

(Apply color adhesive agent evenly until the gauge line and seal)

3) Check the drainage. (See separate diagram)

4) Install the heat insulation.

5) Use the attached heat insulation to insulate the drain port and band
parts of the body.

B. For strand wiring

(1) Use ring terminals with insulating sleeves as shown in the fi gure

below to connect to the terminal block.

(2) Secur ely clamp the ring t erminals to the wir es using a n

appropriate tool so that the wires do not come loose.

(3) Use the specifi ed wires, connect them securely, and fasten them

so that there is no stress placed on the terminals.
(4) Use an appropriate screwdriver to tighten the terminal screws.
Do not use a screwdriver that is too small, otherwise, the screw

heads may be damaged and prevent the screws from being

properly tightened.
(5) Do not tighten the terminal screws too much, otherwise, the screws

may break.
(6) See the table 1 for the terminal screw tightening torques.

Strip 10 mm (13/32")

Sleeve

Screw with spe­cial washer

Screw with spe­cial washer

Ring terminal

Wire

Wire

Terminal
board

Terminal block

Ring terminal

Ring
terminal

Table 1

Strip 25 mm (31/32")

Loop

Screw with spe­cial washer

Screw with spe-

cial washer
Wire end
(Loop)

Wire end
(Loop)

Wire

Wire

Terminal
board

Terminal block

ELECTRICAL WIRING

5

4

INSTALLING THE COUPLER

HEAT INSULATION

Body

Be sure to overlap the
insulation

Coupler heat insulation

No gap

Coupler heat insulation

After checking for gas leaks, insulate by wrapping insulation around the
two parts (gas and liquid) of the indoor unit coupling, using the coupler
heat insulation.
After installing the coupler heat insulation, wrap both ends with vinyl tape
so that there is no gap.

A. For solid core wiring

(1) To connect the electrical terminal, follow the below diagram and

connect after looping it around the end of the wire.

(2) Use the specifi ed wires, connect them securely, and fasten them

so that there is no stress placed on the terminals.
(3) Use an appropriate screwdriver to tighten the terminal screws.
Do not use a screwdriver that is too small, otherwise, the screw

heads may be damaged and prevent the screws from being

properly tightened.
(4) Do not tighten the terminal screws too much, otherwise, the screws

may break.
(5) See the table 1 for the terminal screw tightening torques.

The pipes are shaped by your hands. Be careful not to collapse them.

Do not bend the pipes in an angle more than 90

°.

When pipes are repeatedly bend or stretched, the material will harden,

making it diffi cult to bend or stretch them any more. Do not bend or

stretch the pipes more than three times.

CAUTION

1 To prevent breaking of the pipe, avoid sharp bends.
Bend the pipe with a radius of curvature of 150 mm

or over.

2 If the pipe is bent repeatedly at the same place, it will

break.

2. BENDING PIPES

To prevent gas leakage, coat the fl are
surface with alkylbenzene oil (HAB).
Do not use mineral oil.

(3) When the fl are nut is tightened properly by your hand, use a torque

wrench to fi nally tighten it.

Torque wrench

Holding spanner

Body side

CAUTION

Hold the torque wrench at its grip, keeping it in the
right angle with the pipe, in order to tighten the fl are nut
correctly.

(2) Centering the pipe against port on the indoor unit, turn the fl are nut

with your hand.

Flare nut Tightening torque

6.35 mm (1/4 in.) dia.

9.52 mm (3/8 in.) dia.

12.70 mm (1/2 in.) dia.

15.88 mm (5/8 in.) dia.

19.05 mm (3/4 in.) dia.

3. CONNECTION PIPES

Indoor unit

(1) Detach the caps and plugs from the pipes.

CAUTION

1 Be sure to apply the pipe against the port on the in-

door unit correctly. If the centering is improper, the
fl are nut cannot be tightened smoothly. If the fl are
nut is forced to turn, the threads will be damaged.

2

Do not remove the fl are nut from the indoor unit pipe
until immediately before connecting the connection
pipe.

14 to 18 N·m (140 to 180 kgf·cm)

33 to 42 N·m (330 to 420 kgf·cm)

50 to 62 N·m (500 to 620 kgf·cm)

63 to 77 N·m (630 to 770 kgf·cm)

100 to 110 N·m (1,000 to 1,100 kgf·cm)

Connection pipe
(Liquid)

Connection pipe
(Gas)

CONNECTING THE PIPE

1. FLARING

(1) Cut the connection pipe to the necessary length with a pipe cutter.
(2) Hold the pipe downward so that cuttings will not enter the pipe and

remove the burrs.

(3) Insert the fl are nut (always use the fl are nut attached to the indoor

and outdoor units respectively) onto the pipe and perform the fl are
processing with a fl are tool.

Use the special R410A fl are tool, or the conventional fl are tool.

Check if [L] is fl ared uniformly and
is not cracked or scratched.

B

Die

A

Pipe

Width across

fl ats

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

0 to 0.5

Pipe outside diameter

Dimension A

(mm)

Flare tool for R410A, clutch type

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

9.1

13.2

16.6

19.7

24.0

Pipe outside diameter

Dimension B

(mm)

0

-0.4

When using conventional fl are tools to fl are R410A pipes, the dimension
A should be approximately 0.5 mm more than indicated in the table (for
fl aring with R410A fl are tools) to achieve the specifi ed fl aring. Use a
thickness gauge to measure the dimension A.

Pipe outside

diameter

Width across fl ats

of Flare nut

17 mm

22 mm

26 mm

29 mm

36 mm

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

3

When sucking in the fresh air, please detach the insulation affi xed
to the drain pan.

Q’ty

1

8

2

1

1

1

1

3

1

1

1

2

Name and Shape

Template
(Carton top)

Washer

Coupler Heat
Insulation

Insulation

Drain Hose Assy

Hose Band Assy

Drain Pipe
Insulation

Binder (Large)

Binder (Small)

Wired Remote
Controller

Remote Controller
Cable(*1)

Tapping screw
(ø4  16)

Application

For installing indoor unit

For installing indoor unit

For indoor side pipe joint

For installing drain pipe

For installing drain pipe

For installing drain pipe

For installing drain pipe

For electrical wiring

For electrical wiring

For connecting the
remote controller

For installing the remote
controller

Copper pipes

It is necessary to use seamless copper pipes and it is desirable that the
amount of residual oil is less than 40 mg/10 m. Do not use copper pipes
having a collapsed, deformed or discolored portion (especially on the interior
surface). Otherwise, the expansion valve or capillary tube may become
blocked with contaminants.
As an air conditioner using R410A incurs pressure higher than when
using conventional refrigerant, it is necessary to choose adequate materials.
Thicknesses of copper pipes used with R410A are as shown in the table.
Never use copper pipes thinner than that in the table even when it is
available on the market.

Thicknesses of Annealed Copper Pipes (R410A)

Pipe outside diameter Thickness

6.35 mm (1/4 in.) 0.80 mm

9.52 mm (3/8 in.) 0.80 mm

12.70 mm (1/2 in.) 0.80 mm

15.88 mm (5/8 in.) 1.00 mm

19.05 mm (3/4 in.) 1.20 mm

For authorized service personnel only.

WARNING

1 For the air conditioner to operate satisfactorily, install it as outlined in this installation instruction sheet.

2 Connect the indoor unit and outdoor unit with the air conditioner piping and cables available from our standards parts. This

installation instruction sheet describes the correct connections using the installation set available from our standard
parts.

3 Installation work must be performed in accordance with national wiring standards by authorized personnel only.

4 If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant comes in contact with a fl ame, it

produces a toxic gas.

5 Do not use an extension cable.

6 Do not turn on the power until all installation work is complete.

CAUTION

This installation instruction sheet describes how to the indoor unit only.
To install the outdoor unit, refer to the installation instruction sheet included with the outdoor unit.

 Be careful not to scratch the air conditioner when handling it.
 After installation, explain correct operation to the customer, using the operating manual.
 Let the customer keep this installation instruction sheet because it is used when the air conditioner is serviced or moved.

CONNECTION PIPE REQUIREMENT

CAUTION

Refer to the installation instruction sheet of the outdoor unit for description of the length of connecting pipe or for difference
of its elevation.

Diameter

Liquid 9.52 mm (3/8 in.)

Gas 15.88 mm (5/8 in.)

 Use pipe with water-resistant heat insulation.

CAUTION

Install heat insulation around both the gas and liquid pipes. Failure to do so may cause water leaks.
Use heat insulation with heat resistance above 120 °C. (Reverse cycle model only)
In addition, if the humidity level at the installation location of the refrigerant piping is expected to exceed 70%, install heat
insulation around the refrigerant piping. If the expected humidity level is 70-80%, use heat insulation that is 15 mm or thicker
and if the expected humidity exceeds 80%, use heat insulation that is 20 mm or thicker.
If heat insulation is used that is not as thick as specifi ed, condensation may form on the surface of the insulation.
In addition, use heat insulation with heat conductivity of 0.045 W/(m·K) or less (at 20 °C).

ELECTRICAL REQUIREMENT

Connection cable (mm2)

MAX. MIN.

2.5 1.5

 Use conformed cable with Type 245 IEC57.
 Install all electrical works in accordance to the standard.
 Install the disconnect device with a contact gap of at least 3 mm in all poles nearby the units. (Both indoor unit and outdoor unit)

CAUTION

Be sure to execute the electrical work according to the Lows of each country and the Installation Instructions.
In addition, be sure to set as exclusive line and use the rated voltage and circuit breaker.

Floor

Obstruction

1,500 mm
or more

1,800 mm or more

1,000 mm

or more

3,000 mm or more

Strong and durable ceiling

4 DIRECTION

100 mm
or more*

3 DIRECTION

*Please ensure suffi cient maintenance space during installation.

A

B

20 - 45 mm

20 - 45 mm

50 mm

200 mm

130 mm

130 mm

699 mm (Hanging bolt pitch)

950 mm (Panel frame)

860 - 910 mm (Ceiling opening)

840 mm (Body frame)

795 mm (Hanging bolt pitch)

20 - 45 mm

50 - 100 mm

140 - 145 mm

10 mm

40 mm

20 - 45 mm

80 mm

130 mm

840 mm (Body frame)

860 - 910 mm (Ceiling opening)

950 mm (Panel frame)

10 mm

80 mm

60 mm278 mm358 mm

140 mm

180 mm

200 mm

Gas pipe

Liquid pipe

Drain pipe
(Connect the attached
drain hose)

Model A B
24LB 246 256

30/36/45/54LB 288 298

88 mm

70 mm

250 mm

352 mm

100 mm

83 mm83 mm

90 mm

100 mm

185 mm

185 mm

Airfl ow split-fl ow duct connecting port

Airfl ow split-fl ow duct connecting port

Refrigerant
pipe

Cut out

Cut out

Detailed diagram of branched duct connecting port
(4 sides)

Fresh air inlet position

2.5 mm hole

2.5 mm hole

Burling hole pitch

Fresh air inlet position

Drain pipe

Airfl ow split-fl ow duct

connecting port

Airfl ow split-fl ow duct

connecting port

Insulation

Fresh air inlet position

CAUTION

1 Do not use mineral oil on fl ared part. Prevent mineral

oil from getting into the system as this would reduce
the lifetime of the units.

2 While welding the pipes, be sure to blow dry nitrogen

gas through them.

WARNING

1 Install the air conditioner in a location which can

withstand a load do at least fi ve times the weight
of the main unit and which will not amplify sound
or vibration. If the installation location is not strong
enough, the indoor unit may fall and cause injuries.

2 If the job is done with the panel frame only, there is a

risk that the unit will come loose. Please take care.

WARNING

•

Perform fi nal tightening by tightening the double nut fi rmly.

•

Be sure to install the body horizontally and adjust the
height below the body and the ceiling surface properly.

10~15

After installing the body,
tighten the nuts.

Hanging bolt

Nut A

Washer

Washer

Nut B (Double Nut)

30 or more

CAUTION

Must fi t tightly against body without any gap.

WARNING

1 Before starting work, check that power is not being

supplied to the indoor unit and outdoor unit.

2 Match the terminal board numbers and connection

cable colors with those of the outdoor unit.

Erroneous wiring may cause burning of the electric

parts.

3 Connect the connection cables fi rmly to the terminal

board. Imperfect installation may cause a fi re.

4 Always fasten the outside covering of the connection

cable with the cable clamp. (If the insulator is chafed,
electric leakage may occur.)

5 Always connect the ground wire.

Install the knob
faces upward

Attached drain hose
heat insulation

Attached
hose band

Locally arranged
vinyl pipe

Attached drain hose

Attached heat insulation

Applying area
of adhesive

Hose band

Gauge line

Make sure there are no gaps

4 mm or less

Wind the attached heat insulation
around the hose band

Make sure the alignment
is on top

(a) Top view

(c) Top view

(d) Hose opening view

(b) Side view

WARNING

When using solid core wires, do not use the attached
ring terminal. If you use the solid core wires with the ring
terminal, the ring terminal’s pressure bonding may mal­function and cause the wires to abnormally heat up.

WARNING

Use ring terminals and tighten the terminal screws to
the specifi ed torques, otherwise, abnormal overheating
may be produced and possibly cause heavy damage
inside the unit.

Tightening torque

M4 screw 12 to 18 N·m (12 to 18 kgf·cm)

Vinyl hoses

Drain pipe

WARNING

•

Do not insert the drain piping into the sewer where sulfu­rous gas occurs. (Heat exchange erosion may occur)

•

Insulate the parts properly so that water will not drip
from the connection parts.

•

Check for proper drainage after the construction by
using the visible portion of transparent drain port and
the drain piping fi nal outlet on the body.

CAUTION

• Do not apply adhesive agent on the drain port of the

body. (Use the attached drain hose and connect the
drain piping)

Note: Install the drain pipe.

 Install the drain pipe with downward gradient (1/50 to 1/100) and so

there are no rises or traps in the pipe.

 Use general hard polyvinyl chloride pipe (VP25) [outside diameter

32 mm] and connect it with adhesive (polyvinyl chloride) so that there
is no leakage.

 When the pipe is long, install supporters.
 Do not perform air bleeding.
 Always heat insulate the indoor side of the drain pipe.
 If it is impossible to have suffi cient gradient of pipe, perform drain

lift-up.

Pipe size

Drain pipe VP25 (O.D. 32 mm)

Hanging fi ttings

1.5 to 2 m

VP25 (O.D. 32 mm)
Downward gradient 1/100 to 1/50

Rise

PROHIBITED:

Trap

Air bleeding

When lifting up drain:

• Height of inclined pipe should be less than 850 mm from the ceiling.

A rise dimension over this range will cause leakage.

• Lift up the pipe vertically at the position of 300 mm or less from the

unit.

300 mm or less

VP25 (O.D. 32 mm)
local arrangement

850 mm or less

Horizontal or up­ward gradient

Downward gradient
1/100 to 1/50

VP30 (O.D. 38 mm) or more
Downward gradient 1/100 to 1/50

850 mm or less

9378590014-07_IM_EN.indd 19378590014-07_IM_EN.indd 1 8/30/2012 9:45:21 AM8/30/2012 9:45:21 AM

CUSTOMER GUIDANCE

Explain the following to the customer in accordance with the operating
manual:

(1) Starting and stopping method, operation switching, temperature

adjustment, timer, air fl ow switching, and other remote controller

operations.
(2) Air fi lter removal and cleaning, and how to use the air louvers.
(3) Give the operating and installation manuals to the customer.
(4) If the signal code is changed, explain to the customer how it changed

(the system returns to signal code A when the batteries in the remote

controller are replaced).
*(4) is applicable to using wireless remote controller.

REMOTE CONTROLLER

SETTING

7

10

(4) Press the SET TEMP. buttons

(

) ( ) to select the setting

value.

The display fl ashes as shown

to the right during setting value
selection.

(5) Press the TIMER SET button

to confi rm the setting.

Press the TIMER SET button

for a few seconds until the
setting value stops fl ashing.

If the setting value display changes or if “- -” is

displayed when the fl ashing stops, the setting value has not been set
correctly.
(An invalid setting value may have been selected for the indoor unit.)

(6) Repeat steps 2 to 5 to perform additional settings.
Press the SET TEMP. buttons (

) ( ) and FAN button simultane­ously again for more than 5 seconds to cancel the function setting
mode. In addition, the function setting mode will be automatically
canceled after 1 minute if no operation is performed.

(7) After completing the FUNCTION SETTING, be sure to turn off the

power and turn it on again.

2. FUNCTION SETTING

 This procedure changes to the function settings used to control the

indoor unit according to the installation conditions. Incorrect settings
can cause the indoor unit malfunction.

 After the power is turned on, perform the “FUNCTION SETTING”

according to the installation conditions using the remote controller.

 The settings may be selected between the following two: Function

Number or Setting Value.

 Settings will not be changed if invalid numbers or setting values are

selected.

Operation Method

(1) Press the SET TEMP. but-

tons (

) ( ) and FAN but­ton simultaneously for more
than 5 seconds to enter the
function setting mode.

(2) Press the SET BACK button

to select the indoor unit num­ber.

(3) Press the SET TIME ( < > )

buttons to select the function
number.

Unit number of INDOOR UNIT

Standard

Ceiling

Upward

Swing range

Function number

SUMOTUWETH FR

SA

SET BACK

SUMOTUWETH FR

SA

SUMOTUWETH FR

SA

Setting value

SUMOTUWETH FR

SA

PART No. 9378590014-07

NO.

SW state

Detail

OFF ON

DIP

switch 1

1

★

Cannot be used. (Do not
change)

2

★

Dual remote controller
setting
*

Refer to 2. DUAL RE­MOTE CONTROLLERS
in 9 SPECIAL INSTALLA­TION METHODS.

3

Follow the
selection in
FUNCTION
SETTING

Invalidity

Filter reset operation and
fi lter display

4

★

Cannot be used. (Do not
change)

5

★

Cannot be used. (Do not
change)

6

★ Invalidity

Validity

Memory backup setting
* Set to ON to use batteries

for the memory backup. If
batteries are not used, all
of the settings stored in
memory will be deleted if
there is a power failure.

(★ Factory setting)

CASSETTE GRILLE

INSTALLATION

• Operate according to the Installation instruction sheet CASSETTE
GRILLE.

• Be sure to confi rm there is no gap between the panel and main unit after
installing the CASSETTE GRILLE.

8

FUNCTION SETTING

AND TEST RUN

1. TURNING ON THE POWER

1. Check the remote controller wiring and DIP switch settings.

2. Install the front case.
*

When installing the front case, connect the connector to the front case.

3. Check the indoor and outdoor unit wiring and circuit board switch
settings, and then turn on the indoor and outdoor units. After “

”
has fl ashed on the set temperature display for several seconds, the
clock display will appear in the center of the remote controller display.
The clock display will appear in the center of the remote controller
display.

SUMOTUWETH FR

SA

Setting the Ceiling Height

 Select the setting values in the table below according to the height of

the ceiling. (The unit is factory-set to “00”.)

The ceiling height values are for the 4-way outlet.
Do not change this setting in the 3-way or 2-way outlet mode.

SPECIAL INSTALLATION

METHODS

2. DUAL REMOTE CONTROLLERS

• Two separate remote controllers can be used to operate the indoor
units.

•

The timer and self-diagnosis functions cannot be used on the secondary
units.

3 4

ON

1 2

Example : No. 3

1. GROUP CONTROL SYSTEM

A number of indoor units can be operated at the same time using a
single remote controller.
(1) Wiring method (indoor unit to remote controller)

(2) DIP switch setting (indoor unit)
Set the unit number of each indoor unit using DIP switch on the indoor

unit circuit board. (see following table and fi gure.)

DIP switch is normally set to make unit number No. 0.

Remote controller

Bus wire

Remote control­ler cable

Indoor unit 2Indoor unit 1Indoor unit 0 Indoor unit 3

When ground wire is necessary

123

123

123 123 123

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

2

OFF

OFF

ON

ON

OFF

OFF

ON

ON

OFF

OFF

ON

ON

OFF

OFF

ON

ON

3

OFF

OFF

OFF

OFF

ON

ON

ON

ON

OFF

OFF

OFF

OFF

ON

ON

ON

ON

4

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

ON

ON

ON

ON

ON

ON

ON

ON

Unit number DIP SWITCH No.

Indoor unit

(1) Wiring method (indoor unit to remote controller)

Remote controller cable

Indoor unit

When ground wire
is necessary

Remote controller

Secondary unit

Primary unit

Number of remote

controllers

Primary unit Secondary unit

DIP SW 1 No. 2

OFF

OFF

DIP SW 1 No. 2

–

ON

1 (Normal)

2 (Dual)

(2) Remote controller DIP switch 1 setting
Set the remote controller DIP switch 1 No. 2 according to the following

table.

1 231 23

1 2 3

9

B

Indoor unit

Setting Other Functions

 The following settings are also possible, depending on the operating

conditions. (The unit is factory-set to “00”.)

Auto Restart

Indoor Room Temperature Sensor Switching Function (Wired remote
controller only)

 If setting value is “00”, room temperature is controlled by the indoor unit

temperature sensor.

 If setting value is “01”, room temperature is controlled by either indoor

unit temperature sensor or remote controller sensor.

After completing the FUNCTION SETTING, be sure to turn off the power
and turn it on again.

Setting record

 Record any changes to the settings in the following table.

A

SETTING THE ROOM TEMPERATURE
DETECTION LOCATION

The detection location of the room temperature can be selected from the
following two examples. Choose the detection location that is best for the
installation location.

A. Indoor unit setting (factory setting)

The room temperature is detected by the indoor unit temperature sen­sor.

(1) When the THERMO SENSOR button is pressed, the lock display

fl ashes because the function is locked at the factory.

Indoor unit

B. Indoor unit/remote controller setting (room

temperature sensor selection)

The temperature sensor of the indoor unit or the remote controller can be
used to detect the room temperature.

(1) Enable the room temperature sensor selection in FUNCTION SET-

TING, which will be described later.

(2) Press the THERMO SENSOR button for 5 seconds or more to select

the temperature sensor of the indoor unit or the remote controller.

• To prevent from draft, we recommend using "upward mode".

• In certain condition, the ceiling may become dirty. In such case, we re­ commend using the optional "PANEL SPACER KIT".

 Set the vertical direction adjusting scope.

Outlet cross section

Setting the Filter Sign

 The indoor unit has a sign to inform the user that it is time to clean the

fi lter.

 Select the time setting for the fi lter sign display interval in the table

below according to the amount of dust or debris in the room. (The unit
is factory-set to “00”.)

 If you do not wish the fi lter sign to be displayed, select the setting value

for “No indication”.

Setting the Outlet Directions

 Select the setting values in the table below for using a 3-way or 2-way

outlet. (The unit is factory-set to “00”.)

Setting the Cooler Room Temperature Correction

 Depending on the installed environment, the room temperature sensor

may require a correction. The settings may be selected as shown in the
table below. (The unit is factory-set to “00”.)

Setting the Heater Room Temperature Correction

 Depending on the installed environment, the room temperature sensor

may require a correction. The settings may be changed as shown in
the table below. (The unit is factory-set to “00”.)

[Example]

Remote
controller cable

Box

Screws

Connector

Rear case

Unit: mm

8

6

30

23

120

120

17

45.3

4.5

4.5

Hole × 2

Hole × 3

4.5

12.5

63.5

15.3

83.5

Hole

33.5

2. SETTING THE DIP SWITCHES

Set the remote controller DIP switches.

[Example]

ONONOFF

1
2
3
4
5
6

DIP switch 1

Front case (back side)

Do not use this
DIP switch 2

Wrap the connector and remote
controller wires with vinyl tape or
some other type of insulation as
shown in the fi gure.

Ground the remote controller if it has a
ground wire.

Remote controller

When remote controller cable is embedded
(1) Embed the remote controller cable and box.
(2) Pass the remote controller cable through the hole in the rear case and

connect the remote controller cable to the remote controller terminal
board specifi ed in fi gure.

(3) Clamp the remote controller cable sheath with the binder as shown in

fi gure.
(4) Cut off the excess binder.
(5) Install the rear case to the wall, box, etc., with two screws fi gure.

Screws

SET BACK

Front case
(back side)

Rear case

Connector

1. INSTALLING THE REMOTE CONTROLLER

Open the operation panel on the front of the remote controller, remove
the two screws indicated in the following fi gure, and then remove the front
case of the remote controller.

When installing the remote controller, remove the connector from the
front case. The wires may break if the connector is not removed and
the front case hangs down.
When installing the front case, connect the connector to the front case.

(2) Please fi x the Connection Cable with Cable Clamp. And then install

the Wire Cover with screws.

(3) Install control box cover.

Detail (a)

Detail (b)

Detail (c)

6

1. CONNECTION DIAGRAMS

*

Ground the remote controller if it has a ground wire

Connection cable (to outdoor unit)

Wired remote controller cable

3
2
1

Black

White
Red

*

Indoor unit

side

3
2
1

Power line

Control line

Indoor unit

side

Power supply
cable or connec­tion cable

( a )

( b )

Control box cover

Wiring connecting port

Connection
cable clamp

Wiring cover

Power terminal board

Remote control terminal board

Remote Controller connecting port

Cure the wiring connecting port and
remote controller connecting port with
paste or heat insulation so that insects
or dust will not enter the unit

Fuse
250V 3.15A

20 mm

30 mm or more

Earth wire

• Use a 4-core wire cable.

Keep the earth wire longer than the other wires.

(1) Remove the control box cover and install each connection wire.

Please fi rmly tighten Connection cables and Remote Controller

cables with the attached binder.

2. CONNECTION OF WIRING

TROUBLESHOOTING (Option)

[Troubleshooting with the indoor display]

Troubleshooting at the display is possible either on the wired or wireless
remote controller.

The OPERATION, TIMER and FILTER lamp operate as follows table ac­cording to the error contents.

FILTER LAMP
(RED)

TIMER LAMP
(ORANGE)

OPERATION LAMP
(GREEN)

MANUAL AUTO

[Troubleshooting at the remote controller LCD]

This is possible only on the wired remote controller.

[SELF-DIAGNOSIS]

If an error occurs, the following display will be shown.
(“EE” will appear in the set room temperature display.)

Unit number

Error code

Ex. Self-diagnosis

SUMOTUWETH FR

SA

If “CO” appears in the unit number display, there is a remote controller
error. Refer to the installation instruction sheet included with the remote
controller.

Error code

1d

1C

Content

Incompatible indoor unit is
connected

Indoor unit  remote controller
communication error

Unit number

C0

C0

Transmitter section

Test run button

[Using the wireless remote controller] (Option)

• For the operation method, refer to the operating manual.

• The outdoor unit may not operate depending on the room temperature.
In this case, press the test run button on the remote controller while
the air conditioner is running. (Point the transmitter section of the
remote controller toward the air conditioner and press the test run button
with the tip of a ball-point pen, etc.)

•

To end test operation, press the remote controller START/STOP button.

(When the air conditioner is run by pressing the test run button, the

OPERATION indicator lamp and TIMER indicator lamp will simulta­neously fl ash slowly.)

3. TEST RUN
CHECK ITEMS

(1) Is operation of each button on the remote controller normal?
(2) Does each lamp light normally?
(3) Do not air fl ow direction louvers operate normally?
(4) Is the drain normal?
(5) Is there any abnormal noise and vibration during operation?

• Do not operate the air conditioner in the running state for a long time.

[OPERATION METHOD]

• For the operation method, refer to the operating manual.

(1) Stop the air conditioner operation.
(2) Press the MODE button and the FAN button simultaneously for

2 seconds or more to start the test run.

(3) Press the START/STOP button to stop the test run.

Test run display

NOTES

If the function to change the temperature sensor is used as shown in
examples A (other than example B), be sure to lock the detection loca­tion. If the function is locked, the lock display

will fl ash when the

THERMO SENSOR button is pressed.

Jumper wire

JM2

Connect

Connect

Disconnect

Disconnect

Remote controller

signal code

A (Primary setting)

B

C

D

JM1

Connect

Disconnect

Connect

Disconnect

[When using the wireless remote controller]
(Option)

SWITCHING REMOTE CONTROLLER SIGNAL
CODES

 Confi rm the setting of the remote controller signal code and the printed

circuit board setting.

If these are not confi rmed, the remote controller cannot be used to

operate for the air conditioner.

Indoor unit
Printed circuit board

CAUTION

1 When select the “Remote controller set-

ting” , if the detected temperature value
between the temperature sensor of the

indoor unit and the temperature sensor
of the remote controller varies signifi cantly, it is
likely to return to the control status of temperature
sensor of the indoor unit temporarily.

2 As the temperature sensor of remote controller de-

tects the temperature near the wall, when there is a
certain difference between the room temperature and
the wall temperature, the sensor will not detect the
room temperature correctly sometimes.
Especially when the outer side of the wall on which the
sensor is positioned is exposed to the open air, it is rec­ommended to use the temperature sensor of the indoor
unit to detect the room temperature when the indoor and
outdoor temperature difference is signifi cant.

3

The temperature sensor of the remote controller is not
only used when there is a problem in the detection of
the temperature sensor of the indoor unit.

CAUTION

1

When detecting the room temperature us­ing the remote controller, please set up the
remote controller according to the following
conditions. If the remote controller is not well
set, the correct room temperature will not be
detected, and thus the abnormal conditions like
“not cooled” or “not heated” will occur even if
the air-conditioner is running normally

.

 A location with an average temperature for the room being

airconditioned.

 Not directly exposed to the outlet air from the air-conditioner.
 Out of direct sunlight.
 Away from the infl uence of other heat sources.

2 Do not touch the remote controller PC board and PC

board parts directly with your hands.

3

Do not wire the remote controller cable and the bus
wire together with or parallel to the connection cables,
transmission cables, and power supply cables of the
indoor and outdoor units. It may cause erroneous
operation

.

4 When installing the bus wire near a source of electro-

magnetic waves, use shielded wire.

5

Do not set the DIP switches, either on the air conditioner
or the remote controller, in any way other than indicated
in this sheet or the manual that is supplied with the air
conditioner. Doing so may result in an accident.

Temperature sensor

( c )

Bind securely

Cable clamp

Thread the binder through
the hole and tighten securely

Binder (Large)

Cut off the excess

10mm and above

Thread the binder through the
hole and tighten securely

5mm and above

Binder (Large)

Cut off the excess

CAUTION

Do not bundle the remote controller cable, or wire the
remote controller cable in parallel, with the indoor unit
connection wire (to the outdoor unit) and the power sup­ply cable. It may cause erroneous operation.

Binder
(Small)

1. Red

2. White

3. Black

Hole

t

CAUTION

When connecting the
remote controller wires, do
not overtighten the screws.

Error code Error contents

01
13
26
27

Indoor signal error

00

Wired remote controller error

02

Indoor room temperature sensor error

04

Indoor heat exchanger temperature sensor (middle)
error

28

Indoor heat exchanger temperature sensor (inlet) error

09

Float switch operated

0C

Outdoor discharge pipe temperature sensor error

06

Outdoor heat exchanger temperature sensor (outlet)
error

0A

Outdoor temperature sensor error

15

Compressor temperature sensor error

1d

2-way valve temperature sensor error

1E

3-way valve temperature sensor error

29

Outdoor heat exchanger temperature sensor (middle)
error

20

Indoor manual auto switch error

2A

Power supply frequency detection error

17

IPM protection

18

CT error

1A

Compressor location error

1b

Outdoor fan error

1F

Connected indoor unit error

1C

Outdoor unit computer communication error

12

Indoor fan error

0F

Discharge temperature error

24

Excessive high pressure protection on cooling

2C

4-way valve error

16

Pressure switch error

2b

Compressor temperature error

19

Active fi lter error

25

PFC circuit error

CAUTION

1 Install the remote controller wires so as not to be

direct touched with your hand.

2 Do not touch the remote controller PC board and PC

board parts directly with your hands.

Error contents

OPERA-

TION

lamp

TIMER

lamp

FILTER

lamp

Indoor signal error

Wired remote controller error

(8 times)

Indoor room temperature sensor error

(2 times)

(2 times)

Indoor heat exchanger temperature
sensor (middle) error

(2 times)

(3 times)

Indoor heat exchanger temperature sen­sor (inlet) error

(2 times)

(4 times)

Float switch operated

(2 times)

(6 times)

Outdoor discharge pipe temperature
sensor error

(3 times)

(2 times)

Outdoor heat exchanger temperature
sensor (outlet) error

(3 times)

(3 times)

Outdoor temperature sensor error

(3 times)

(4 times)

Compressor temperature sensor error

(3 times)

(8 times)

2-way valve temperature sensor error

(3 times)

(2 times)

3-way valve temperature sensor error

(3 times)

(3 times)

Outdoor heat exchanger temperature
sensor (middle) error

(3 times)

(4 times)

Indoor manual auto switch error

(4 times)

(2 times)

Power supply frequency detection
error

(4 times)

(4 times)

IPM protection

(5 times)

(2 times)

CT error

(5 times)

(3 times)

Compressor location error

(5 times)

(5 times)

Outdoor fan error

(5 times)

(6 times)

Connected indoor unit error

(5 times)

(7 times)

Outdoor unit computer communica­tion error

(5 times)

(8 times)

Indoor fan error

(6 times)

(2 or 3 times)

Discharge temperature error

(7 times)

(2 times)

Excessive high pressure protection
on cooling

(7 times)

(3 times)

4-way valve error

(7 times)

(4 times)

Pressure switch error

(7 times)

(5 times)

Compressor temperature error

(7 times)

(6 times)

Active fi lter error

(8 times)

(2 or 3 times)

PFC circuit error

(8 times)

(4 times)

: 0.5s ON/0.5s OFF (Flash) : OFF

CAUTION

1 Confi rm whether the wiring work for outdoor unit has

been fi nished.

2 Confi rm whether the cap for electric control box on

the outdoor unit is close.

CAUTION

1 When setting DIP switches, do not touch any other parts

on the circuit board directly with your bare hands.

2 Be sure to turn off the main power.

Setting Setting Value

Ceiling height

Outlet directions

Filter sign

Cooler room temperature
correction

Heater room temperature
correction

Auto restart

Indoor room temperature
sensor switching function

Setting Description [m]

Function Number Setting Value

Standard

3.2 m

20

00

Low ceiling

2.7 m

01

High ceiling
30 Type 3.6m
36,45,54 Type 4.2m

02

Setting Description Function Number Setting Value

Standard

31

00

Lower control 01

Slightly warmer control

02

Warmer control 03

Setting Description Function Number Setting Value

Standard

30

00

Lower control 01

Setting Description Function Number Setting Value

Standard

23

00

Upward 01

Setting Description Function Number Setting Value

4-way

22

00

3-way 01

Setting Description Function Number Setting Value

Standard

(2,500 hours)

11

00

Long interval

(4,400 hours)

01

Short interval

(1,250 hours)

02

No indication 03

Setting Description Function Number Setting Value

Yes

40

00

No 01

Setting Description Function Number Setting Value

Yes

42

00

No 01

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