Fujitsu INDOOR UNIT Duct Type Installation Manual - User Manual

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PART NO. 9380441038

AIR CONDITIONER

INSTALLATION MANUAL

INDOOR UNIT (Duct Type)

For authorized service personnel only.

INSTALLATIONSANLEITUNG

INNENGERÄT (Für Luftkanalsysteme)

Nur für autorisiertes Personal.

MANUEL D'INSTALLATION

UNITÉ INTÉRIEURE (Type conduit)

Pour le personnel agréé uniquement.

MANUAL DE INSTALACIÓN

UNIDAD INTERIOR (Con conductos)

Solo para personal autorizado.

MANUALE D'INSTALLAZIONE

UNITÀ INTERNA (Tipo di condotto)

Ad uso esclusivo del personale autorizzato.

ΕΓΧΕΙΡΙΔΙΟ ΕΓΚΑΤΑΣΤΑΣΗΣ

ΕΣΩΤΕΡΙΚΗ ΜΟΝΑΔΑ (Τύποςαγωγού)

Гια εξουσιοδοτημένο προσωπικό σέρβις.

MANUAL DE INSTALAÇÃO

UNIDADE INTERIOR (Tipo conduta)

Apenas para técnicos autorizados.

РУКОВОДСТВО ПО УСТАНОВКЕ

ВНУТРЕННИЙ МОДУЛЬ (Канального типа)

Для yпoлнoмoчeнного персонала.

KURULUM KILAVUZU

İÇ ÜNİTE (Oluk tipi)

Yetkili servis personeli içindir.

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SAFETY PRECAUTIONS

Be sure to read this Manual thoroughly before installation.

•

The warnings and precautions indicated in this Manual

•

contain important information pertaining to your safety. Be sure to observe them.

Hand this Manual, together with the Operating Manual, to the customer. Request the

•

customer to keep them on hand for future use, such as for relocating or repairing the unit.

WARNING

This mark indicates procedures which, if improperly performed,

might lead to the death or serious injury of the user.

Request your dealer or a professional installer to install the indoor unit in accordance

with this Installation Manual. An improperly installed unit can cause serious accidents

such as water leakage, electric shock, or fire. If the indoor unit is installed in disregard

of the instructions in the Installation Manual, it will void the manufacturer’s warranty.
Do not turn ON the power until all work has been completed. Turning ON the power

before the work is completed can cause serious accidents such as electric shock or

fire.

If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant

comes in contact with a flame, it produces a toxic gas.

Installation work must be performed in accordance with national wiring standards by

authorized personnel only.

Do not touch the fins of the heat exchanger. Touching the heat exchanger fins could

result in damage to the fins or personal injury such as skin rupture.

CAUTION

This mark indicates procedures which, if improperly performed,

might possibly result in personal harm to the user, or damage

to property.

Read carefully all security information before use or install the air conditioner.
Do not attempt to install the air conditioner or a part of the air conditioner by yourself.

This unit must be installed by qualified personnel with a capacity certificate for handling

refrigerant fluids. Refer to regulation and laws in use on installation place.

The installation must be carried out in compliance with regulations in force in the place

of installation and the installation instructions of the manufacturer.
This unit is part of a set constituting an air conditioner. It must not be installed alone or

with non-authorized by the manufacturer.
Always use a separate power supply line protected by a circuit breaker opera-ting on all

wires with a distance between contact of 3 mm for this unit.
The unit must be correctly grounded and the supply line must be equipped with a dif-

ferential breaker in order to protect the persons.

The units are not explosion proof and therefore should not be installed in explosive

atmosphere.
Never touch electrical components immediately after the power supply has been turned

off. Electric shock may occur. After turning off the power, always wait 5 minutes before

touching electrical components.
This unit contains no user-serviceable parts. Always consult authorized service person-

nel to repairs.
When moving, consult authorized service personnel for disconnection and installation

of the unit.
This appliance is not intended for use by persons (including children) with reduced

physical, sensory or mental capabilities, or lack of experience and knowledge, unless

they have been given supervision or instruction concerning use of the appliance by a

person responsible for their safety. Children should be supervised to ensure that they do

not play with the appliance.

ABOUT THE UNIT

Precautions for using R410A refrigerant

WARNING

Do not introduce any substance other than the prescribed refrigerant into the

refrigeration cycle. If air enters the refrigeration cycle, the pressure in the refrigeration

cycle will become abnormally high and cause the piping to rupture.

If there is a refrigerant leak, make sure that it does not exceed the concentration limit.

If a refrigerant leak exceeds the concentration limit, it can lead to accidents such as

oxygen starvation.

Do not touch refrigerant that has leaked from the refrigerant pipe connections or other

area. Touching the refrigerant directly can cause frostbite.
If a refrigerant leak occurs during operation, immediately vacate the premises and

thoroughly ventilate the area. If the refrigerant comes in contact with a flame, it

produces a toxic gas.

Special tool for R410A

21 21

WARNING

To install a unit that uses R410A refrigerant, use dedicated tools and piping materials

that have been manufactured specifically for R410A use. Because the pressure

of R410A refrigerant is approximately 1.6 times higher than the R22, failure to use

dedicated piping material or improper installation can cause rupture or injury.

Furthermore, it can cause serious accidents such as water leakage, electric shock, or fire.

Tool name

Changes

Gauge manifold

The pressure in the refrigerant system is extremely 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 to use a gauge manifold with a high

pressure display range of –0.1 to 5.3 MPa and a low

pressure display range of –0.1 to 3.8 MPa.

Charging hose

To increase pressure resistance, the hose material and

base size were changed.

(The charging port thread diameter for R410A is 1/2 UNF

20 threads per inch.)

Vacuum pump

A conventional vacuum pump can be used by installing a

vacuum pump adapter.

Be sure that the pump oil does not backflow into the

system. Use one capable for vacuum suction of

–100.7 kPa (5 Torr, –755 mmHg).

Gas leakage detector

Special gas leakage detector for R410A refrigerant.

INSTALLATION MANUAL

PART NO. 9380441038

INDOOR UNIT (Duct Type)

Contents

SAFETY PRECAUTIONS

……………………………………………………………… 1

ABOUT THE UNIT

………………………………………………………………………… 1

Precautions for using R410A refrigerant

.1.

………………………………………… 1

Special tool for R410A

……………………………………………………………… 1

Accessories

.3.

…………………………………………………………………………

Optional parts

.4.

………………………………………………………………………

INSTALLATION WORK

…………………………………………………………………

Selecting an installation location

3.1.

…………………………………………………

Installation dimension

………………………………………………………………

Installation the unit

3.3.

………………………………………………………………… 3

PIPE INSTALLATION

…………………………………………………………………… 4

Selecting the pipe material

4.1.

………………………………………………………… 4

Pipe requirement

…………………………………………………………………… 4

Flare connection (pipe connection)

4.3.

……………………………………………… 4

Installing heat insulation

4.4.

…………………………………………………………… 5

INSTALLING DRAIN PIPES

……………………………………………………………… 5

ELECTRICAL WIRING

……………………………………………………………………

Electrical requirement

.1.

………………………………………………………………

Wiring method

………………………………………………………………………

REMOTE CONTROLLER SETTING

…………………………………………………… 7

Installing the remote controller

7.1.

…………………………………………………… 8

Setting the dip switches

…………………………………………………………… 8

FUNCTION SETTING

…………………………………………………………………… 8

Turning on the power

8.1.

……………………………………………………………… 8

Setting method

……………………………………………………………………… 8

Function setting

8.3.

…………………………………………………………………… 9

Setting the room temperature detection location

8.4.

…………………………… 10

TEST RUN

……………………………………………………………………………… 10

CHECK LIST

10.

…………………………………………………………………………… 10

SPECIAL INSTALLATION METHODS

11.

……………………………………………… 10

Group control system

11.1.

…………………………………………………………… 10

Fan delay setting

11.

………………………………………………………………… 11

Dual remote controllers

11.3.

………………………………………………………… 11

OPTIONAL PARTS

…………………………………………………………………… 11

External input and external output

.1.

……………………………………………… 11

I.R. receiver unit / Remote sensor

……………………………………………… 1

CUSTOMER GUIDANCE

13.

……………………………………………………………… 1

ERROR CODES

14.

……………………………………………………………………… 13

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Accessories

21 21

WARNING

For installation purposes, be sure to use the parts supplied by the manufacturer or

other prescribed parts.

The use of non-prescribed parts can cause serious accidents such as the unit falling,

water leakage, electric shock, or fire.

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

•

Keep the Installation Manual in a safe place and do not discard any other accessories

•

until the installation work has been completed.

Name and Shape

Q’ty

Description

Special nut A

(Large flange)

For suspending the indoor unit

from ceiling

Special nut A

(small flange)

Coupler heat insulation (Large)

For indoor side pipe joint

(Gas pipe)

Coupler heat insulation (Small)

For indoor side pipe joint

(Liquid pipe)

Cable tie (Large)

For fixing the heat insulation

Cable tie (Medium)

For fixing the remote controller

cable and connection cable

Cable tie (Small)

For fixing the remote controller

cable

Remote controller

For Air conditioner operation

Screw

(Flush heads)

For installing indoor unit remote

controller

Remote controller cable

For connecting the remote

controller

Optional parts

Parts name

Model No.

Summary

Wired remote controller

UTY-RVN*M

For Air conditioner

operation

Wired remote controller

UTY-RNN*M

For Air conditioner

operation

Simple remote controller

UTY-RSN*M

For Air conditioner

operation

Remote sensor

UTY-XSZX

New amenity space can

be offered by installing

the Remote sensor in the

remote controller

External control set

UTD-ECS5A

Use to connect various

peripheral devices and air

conditioner PC board

INSTALLATION WORK

Especially, the installation place is very important for the split type air conditioner because

it is very difficult to move from place to place after the first installation.

Selecting an installation location

Decide the mounting position together with the customer as follows.

WARNING

Select installation locations that can properly support the weight of the indoor unit.

Install the units securely so that they do not topple or fall.

CAUTION

Do not install the indoor unit in the following areas:

Area with high salt content, such as at the seaside.

•

It will deteriorate metal parts, causing the parts to fall or the unit to leak water.

Area filled with mineral oil or containing a large amount of splashed oil or steam,

•

such as a kitchen.

It will deteriorate plastic parts, causing the parts to fall or the unit to leak water.

Area that generates substances that adversely affect the equipment, such as sulfuric

•

gas, chlorine gas, acid, or alkali. It will cause the copper pipes and brazed joints to

corrode, which can cause refrigerant leakage.

Area that can cause combustible gas to leak, contains suspended carbon fibers or

•

flammable dust, or volatile inflammables such as paint thinner or gasoline. If gas

leaks and settles around the unit, it can cause a fire.

Area where animals may urinate on the unit or ammonia may be generated.

•

Do not use the unit for special purposes, such as storing food, raising animals, growing

plants, or preserving precision devices or art objects. It can degrade the quality of the

preserved or stored objects.
Do not install where there is the danger of combustible gas leakage.

Do not install the unit near a source of heat, steam, or flammable gas.

Install the unit where drainage does not cause any trouble.
Install the indoor unit, outdoor unit, power supply cable, transmission cable, and remote

control cable at least 1 m away from a television or radio receivers. The purpose of this

is to prevent TV reception interference or radio noise.

(Even if they are installed more than 1 m apart, you could still receive noise under

some signal conditions.)

Install the unit where ambient temperature does not reach 60°C or more.

Take a measure such as ventilation for an environment in which heat is retained.
If children under 10 years old may approach the unit, take preventive measures so that

they cannot reach the unit.
Take precautions to prevent the unit from falling.

Install the indoor unit on a place having a sufficient strength so that it withstands

(1)

against the weight of the indoor unit.

The inlet and outlet ports should not be obstructed; the air should be able to blow all

(

)

over the room.

Leave the space required to service the air conditioner.

(3)

Install the unit where connection to the outdoor unit is easy.

(4)

Install the unit where the connection pipe can be easily installed.

(5)

Install the unit where the drain pipe can be easily installed.

(

)

Install the unit where noise and vibrations are not amplified.

(7)

Take servicing, etc., into consideration and leave the spaces. Also install the unit where

(8)

the filter can be removed.

Do not install the unit where it will be exposed to direct sunlight.

(9)

Installation dimension

21 21

Installation by which service space is made on top of the unit

21 21

(recommended)

Install the unit away from the ceiling by 350 mm or more.

350

2500 or more

(When no ceiling)

Service

space

Unit : mm

Service access

500 or more

Floor

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Installing hangers

21 21 21

Suspend the indoor unit by referring to the following figures.

Inlet port

Outlet port

AIR

1260

1192

526

586

Unit : mm

181

Hanging bolt M10

(Field supply)

Special nut A

(Accessories)

Washer

(Field supply)

Hanger

Special nut B

(Accessories)

CAUTION

Fasten the unit securely with special nuts A and B.

Leveling

21 21 21

Use the procedure in the following figure to adjust the levelness.

Level meter

Safty drain port

(Front)

The side of the unit that holds the drain port A should be slightly lower than the opposite

side of the unit B. The slant should allow from 0 to 20 mm of difference between A and B.

(Side)

Level meter

Main drain port

Safty drain port

The side of the unit that holds the drain port A should be slightly lower than the opposite

side of the unit B. The slant should allow from 0 to 10 mm of difference between A and B.

Installation by which service is carried out from the bottom of the

21 21 21

unit

20 or

Service

space

Unit : mm

Service access

500 or more

(For maintenance)

21 21 21

Maintenance work of the control box is possible with the Service access of the

(1)

measurement shown in the figure.

If maintenance work is to be done from the bottom side, the Service access needs to

(

)

be larger than the outside dimension of the indoor unit.

If maintenance work is to be done from the top, keep the space of the more than

(3)

450 mm between the indoor unit and ceiling.

800

500

30 or

500 or

200 or

Service access size of 3.2.1

Drain pan

Unit : mm

Service access size of 3.2.2

Installation the unit

21 21

WARNING

Install the air conditioner in a location which can withstand a load of at least 5 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.
If the job is done with the panel frame only, there is a risk that the unit will come loose.

Please take care.

Carrying in and installation of the unit should be performed by a sufficient number

of people and with sufficient equipment that is adequate for the weight of the unit.

Performing such work by an insufficient number of people or with inadequate

equipment could result in dropping of the unit or personal injury.

CAUTION

Confirm the directions of the air intake and outlet before installing the unit.

The unit takes in air from the evaporator side, and expels it from the fan side.

For installation, refer to the technical data.

Conveyance method

21 21

Leave the packing materials on until the unit is at the installation site.

•

Remove the packing hardware and dispose of it.

•

Be careful not to dispose the accessories.

•

Unit is packed upside down.

Fan holder (2 locations) Pull them out towards you.

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Mounting the duct

21 21

Follow the procedure in the following figure to install the ducts.

351

304

1260

1062

106

152

921

Inlet port flange

*Spacing between flange and safety drain pan.

Outlet port flange

Unit : mm

CAUTION

To prevent people from touching the parts inside the unit, be sure to install grilles on

the inlet and outlet ports. The grilles must be designed in such a way that cannot be

removed without tools.

Set the external static pressure between 60 and 260Pa and set the appropriate static

pressure mode. (Refer to 8.3 Function setting)
If an intake duct is installed, take care not to damage the temperature sensor (the

temperature sensor is attached to the intake port flange).

Install the air inlet grille for air circulation. The correct temperature can not be

detected.

Unit

Outlet Grille

(Field supply)

Inlet Grille

(Field supply)

(Room)

Duct

(Field supply)

When connecting the duct, perform duct-insulation that is appropriate for the installing

environment.

Inappropriate insulation work may cause condensation on the surface of the insulating

material, and may lead condensation drip.

PIPE INSTALLATION

CAUTION

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

refrigerant R410A models. Also, when storing the piping, securely seal the openings

by pinching, taping, etc.
While welding the pipes, be sure to blow dry nitrogen gas through them.

Selecting the pipe material

CAUTION

Do not use existing pipes.

Use pipes that have clean external and internal sides without any contamination which

may cause trouble during use, such as sulfur, oxide, dust, cutting waste, oil, or water.

It is necessary to use seamless copper pipes.

Material : Phosphor deoxidized seamless copper pipes

It is desirable that the amount of residual oil is less than 40 mg/10 m.

Do not use copper pipes that have a collapsed, deformed, or discolored portion

(especially on the interior surface). Otherwise, the expansion valve or capillary tube may

become blocked with contaminants.

Improper pipe selection will degrade performance. 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 those indicated in the table even if they are available

•

on the market.

Pipe outside diameter [mm (in.)]

Thickness [mm]

6.35 (1/4)

0.8

9.52 (3/8)

0.8

12.70 (1/2)

0.8

15.88 (5/8)

1.0

19.05 (3/4)

1.2

Pipe requirement

1 21

CAUTION

Refer to the Installation Manual of the outdoor unit for description of the length of

connecting pipe or for difference of its elevation.

Diameter [mm (in.)]

Liquid

9.52 (3/8)

Gas

15.88 (5/8)

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 specified, 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).

Flare connection (pipe connection)

1 21

Flaring

1 21

Use special pipe cutter and flare tool exclusive for R410A.

•

Cut the connection pipe to the necessary length with a pipe cutter.

(1)

Hold the pipe downward so that cuttings will not enter the pipe and remove any burrs.

(

)

Insert the flare nut (always use the flare nut attached to the indoor and outdoor units

(3)

respectively) onto the pipe and perform the flare processing with a flare tool. Use the

special R410A flare tool, or the conventional flare tool. Leakage of refrigerant may

result if other flare nuts are used.

Protect the pipes by pinching them or with tape to prevent dust, dirt, or water from

(4)

entering the pipes.

Check if [L] is flared uniformly

and is not cracked or scratched.

Pipe

Die

Pipe outside

diameter

[mm (in.)]

Dimension A [mm]

Dimension B

0.4

[mm]

lare tool for R410A,

clutch type

6.35 (1/4)

0 to 0.5

9.1

9.52 (3/8)

13.2

12.70 (1/2)

16.6

15.88 (5/8)

19.7

19.05 (3/4)

24.0

When using conventional flare tools to flare R410A pipes, the dimension A should be

approximately 0.5 mm more than indicated in the table (for flaring with R410A flare tools) to

achieve the specified flaring. Use a thickness gauge to measure the dimension A.

Pipe outside

diameter [mm (in.)]

Width across flats

of Flare nut [mm]

6.35 (1/4)

9.52 (3/8)

12.70 (1/2)

15.88 (5/8)

19.05 (3/4)

Width across

flats

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Bending pipes

1 21 21

If pipes are shaped by hand, 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 difficult

•

to bend or stretch them any more.

Do not bend or stretch the pipes more than 3 times.

•

CAUTION

To prevent breaking of the pipe, avoid sharp bends.
If the pipe is bent repeatedly at the same place, it will break.

Pipe connection

1 21 21

CAUTION

Be sure to apply the pipe against the port on the indoor unit correctly. If the centering

is improper, the flare nut cannot be tightened smoothly. If the flare nut is forced to turn,

the threads will be damaged.

Do not remove the flare nut from the indoor unit pipe until immediately before

connecting the connection pipe.

Do not use mineral oil on flared part. Prevent mineral oil from getting into the system

as this would reduce the lifetime of the units.

Detach the caps and plugs from the pipes.

(1)

Centering the pipe against port on the indoor unit, turn the flare nut with your hand.

(

)

Connection pipe

(small)

Flare nut

Connection pipe

(large)

When the flare nut is tightened properly by your hand, hold the body side coupling with

(3)

a separate spanner, then tighten with a torque wrench. (See the table below for the

flare nut tightening torques.)

CAUTION

Hold the torque wrench at its grip, keeping it in the right angle with the pipe, in order to

tighten the flare nut correctly.
Tighten the flare nuts with a torque wrench using the specified tightening method.

Otherwise, the flare nuts could break after a prolonged period, causing refrigerant to

leak and generate a hazardous gas if the refrigerant comes into contact with a flame.

Tighten with 2 wrenches.

Connection pipe

Torque wrench

Indoor unit pipe

(Body side)

Flare nut

Holding Wrench

Flare nut [mm (in.)]

Tightening torque [N·m (kgf·cm)]

6.35 (1/4) dia.

16 to 18 (160 to 180)

9.52 (3/8) dia.

32 to 42 (320 to 420)

12.70 (1/2) dia.

49 to 61 (490 to 610)

15.88 (5/8) dia.

63 to 75 (630 to 750)

19.05 (3/4) dia.

90 to 110 (900 to 1,100)

Installing heat insulation

Install the heat insulation material after performing a refrigerant leak check (see the
Installation Manual for the outdoor unit for details).

COUPLER HEAT INSULATION

Insulate with the coupler heat insulation (Accessories) around the gas pipe and liquid pipe

•

at indoor unit.

After installing the coupler heat insulation, wrap both ends with vinyl tape so that there is

•

no gap.

After affi xing the coupler heat insulation, secure it with 2 cable tie (large), one on each

•

end of the insulation.

Make sure that the cable tie overlap the heat insulation pipe.

•

Heat insulation

Coupler heat

insulation

(Accessories)

Cover this portion with

heat insulation.

Cable tie (Large)

(Accessories)

CAUTION

After checking for gas leaks (refer to the Installation Manual of the outdoor unit),

perform this section.
Install heat insulation around both the large (gas) and small (liquid) pipes. Failure to

do so may cause water leaks.

INSTALLING DRAIN PIPES

CAUTION

Install the drain pipe in accordance with the instructions in this Installation Manual and

keep the area warm enough to prevent condensation. Problems with the piping may

lead to water leaks.

This UNIT has drain ports in 2 locations. Follow the procedure in the figure to connect

drain pipes to each of them.
Be sure to properly insulate the drain pipes.
The position of the installed drain pipe should have a downward gradient of 1/100 or

more.
Do not connect the drain pipe in which ammonia or other types of gas affecting the

unit is generated.

Install the drain pipes according to the measurements given in the following figure.

Flange positions for connecting the drain pipes

Safty drain port

Φ25.4 (O.D.)

Main drain port

Φ25.4 (O.D.)

Unit : mm

148

382

400

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INSTALL THE DRAIN PIPE

•

Use general hard polyvinyl chloride pipe (VP25) and connect it with adhesive (polyvinyl

chloride) so that there is no leakage. Do not perform air bleeding.

Main drain pipe

(1)

Provide one trap on the

main drain pipe near the

indoor unit.

Unit

Drain pipe

Trap

=100 mm (Approx.)

pt=50~100 mm

Safety drain

(

)

There is no need to provide a trap

for the safety drain pipe.

If the safety drain pipe is

connected to the main drain pipe,

make the connection below the

trap on the main drain pipe

Unit

Drain pipe

Main

Safety

Make sure that drain pipe is installed

•

without rises.

Do not perform air bleeding.

•

Rise

Air bleeding

Rise

PROHIBITED

CAUTION

Make sure the drain water is properly drained.

ELECTRICAL WIRING

WARNING

Electrical work must be performed in accordance with this Manual by a person

certified under the national or regional regulations. Be sure to use a dedicated circuit

for the unit.

An insufficient power supply circuit or improperly performed electrical work can cause

serious accidents such as electric shock or fire.

Before starting work, check that power is not being supplied to the indoor unit and

outdoor unit.

Use the included connection cables and power cables or ones specified by the

manufacturer. Improper connections, insufficient insulation, or exceeding the allowable

current can cause electric shock or fire.

For wiring, use the prescribed type of cables, connect them securely, making sure

that there are no external forces of the cables applied to the terminal connections.

Improperly connected or secured cables can cause serious accidents such as

overheating the terminals, electric shock, or fire.
Do not modify the power cables, use extension cables, or use any branches in the

wiring. Improper connections, insufficient insulation, or exceeding the allowable

current can cause electric shock or fire.

Match the terminal board numbers and connection cable colors with those of the

outdoor unit. Erroneous wiring may cause burning of the electric parts.
Securely connect the connection cables to the terminal board. In addition, secure the

cables with wiring holders. Improper connections, either in the wiring or at the ends of

the wiring, can cause a malfunction, electric shock, or fire.

Always fasten the outside covering of the connection cable with the cable clamp. (If

the insulator is chafed, electric leakage may occur.)

Securely install the electrical box cover on the unit. An improperly installed electrical

box cover can cause serious accidents such as electric shock or fire through exposure

to dust or water.
Install sleeves into any holes made in the walls for wiring. Otherwise, a short circuit

could result.
Install a ground leakage breaker. In addition, install the ground leakage breaker so

that the entire AC main power supply is cut off at the same time. Otherwise, electric

shock or fire could result.

Install a ground leakage breaker.

If a ground leakage breaker is not installed, it may cause electric shock or fire.

Always connect the earth (ground) cable.

Improper earthing (grounding) work can cause electric shocks.
Install the remote control cables so as not to be direct touched with your hand.

WARNING

Perform wiring work in accordance with standards so that the air conditioner can be

operated safely and positively.

Connect the connection cable firmly to the terminal board. Imperfect installation may

cause a fire.

CAUTION

Ground the unit.

Do not connect the earth (ground) cable to a gas pipe, water pipe, lightning rod, or a

telephone earth (ground) cable.

Improper earthing (grounding) may cause electric shock.

Do not connect power supply cables to the transmission or remote control terminals,

as this will damage the product.
Never bundle the power supply cable and transmission cable together. Bundling these

cables together will cause miss operation.
When handling PCB, static electricity charged in the body may cause malfunction of

the PCB. Follow the cautions below:

Establish a ground for the indoor and outdoor units and peripheral devices.

•

Cut power (breaker) off.

•

Touch metal part of the indoor and outdoor units for more than 10 seconds to

•

discharge static electricity charged in the body.

Do not touch terminals of parts and patterns implemented on PCB.

•

Electrical requirement

Cable

Cable size (mm

)

Type

Remarks

Connection cable

1.5 (MIN.)

Type 60245 IEC57

3Cable+Earth (Ground),

1φ230V

Max. Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage

drop is 2% or more.

Perform all electrical work according to the standard.

•

Install circuit breakers, which have the terminal spacing of more than 3 mm, in a place of

•

near the indoor unit and outdoor unit.

CAUTION

Be sure to execute the electrical work according to the Laws of each country and the

Installation Instructions. In addition, be sure to set as exclusive line and use the rated

voltage and circuit breaker.

Wiring method

1 21

Connection diagrams

1 21

Connection cable (to outdoor unit)

•

Control line

Power line

Indoor unit

side

Wired remote controller cable

•

Indoor unit

side

White

Red

Black

*Gound the remote controller if it has a earth (ground) wire.

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Connection cable preparation

1 21 21

Earth (ground) wire

Power supply cable

or connection cable

Keep the earth (ground) wire longer than the other wires.

• Use a 4-core wire cable.

30 mm

40 mm or more

How to connect wiring to the terminals.

(For strand wiring)

Use crimp-type terminals with insulating sleeves as shown in the figure below to

(1)

connect to the terminal block.

Securely crimp the crimp-type terminals to the wires using an appropriate tool so that

(

)

the wires do not come loose.

Strip 10 mm

Crimp-type

terminal

Sleeve

Use the specified wires, connect them securely, and fasten them so that there is no

(3)

stress placed on the terminals.

Use an appropriate screwdriver to tighten the terminal screws.

(4)

Do not use a screwdriver that is too small, otherwise, the screw heads may be

damaged and prevent the screws from being properly tightened.

Do not tighten the terminal screws too much, otherwise, the screws may break.

(5)

See the table below for the terminal screw tightening torques.

(

)

WARNING

Use crimp-type terminals and tighten the terminal screws to the specified torques,

otherwise, abnormal overheating may be produced and possibly cause serious

damage inside the unit.

Tightening torque [N·m (kgf·cm)]

M4 screw

1.2 to 1.8 (12 to 18)

M5 screw

2.0 to 3.0 (20 to 30)

Screw with

special washer

Crimp-type

terminal

Terminal blocks

Wire

Screw with

special

washer

Crimp-type

terminal

Connection wiring

1 21 21

CAUTION

Use care not to mistake the power supply cable and connection wires when installing.
Install so that the wires for the remote controller will not come in contact with other

connection wires.

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

Control box

cover

Loosen the screws.

(4 locations)

Control line

Connection cable

Power line

Outdoor unit

Earth (ground)

Black

White

Red

Remote

controller

*Earth

(ground)

wire

*Ground the remote controller if it has a earth (ground) wire.

(2)

After wiring is complete, secure the remote controller cable, connection cable, and

power supply cable with the cable clamps.

Connection cable

(to outdoor unit)

Remote controller

cable

Cable tie (Medium)

(Accessory)

Control box

(3) Seal the cable outlet or other gaps with putty to prevent dew condensation or insect

from entering the electric control box.

(4) Install the control box cover.

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.

REMOTE CONTROLLER SETTING

CAUTION

When using the temperature sensor of remote controller,

be sure to meet the following location requirements for

installation of the remote controller in order to detect the

room temperature correctly. If the remote controller is

installed in an improper location, troubles such as “the

room does not become cool or warm” may occur even

though there is no problem in the air conditioner.

Temperature sensor

A location where the average room temperature can be detected.

•

A location that is not directly exposed to the air blown out of the indoor unit.

•

A location that is not exposed to direct sunlight.

•

A location that is not affected by any heat source.

•

Do not touch the remote controller PC board and PC board parts directly with your hands.
Install the remote controller wires so as not to be direct touched with your hand.
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.
When installing the bus wire near a source of electromagnetic waves, use shielded wire.
Do not set the DIP switches, either on the air conditioner or the remote controller, in

any way other than indicated in this manual or the manual that is supplied with the air

conditioner. Doing so may result in an accident.

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Installing the remote controller

Open the operation panel on the front of the remote controller, remove the 2 screws

indicated in the following figure, 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.

Screws

Connector

Front case

(back side) Rear case

When remote controller cable is embedded

•

Embed the remote controller cable and box.

(1)

Pass the remote controller cable through the hole in the rear case and connect the

(

)

remote controller cable to the remote controller terminal blocks specified in figure.

Clamp the remote controller cable sheath with the cable tie as shown in figure.

(3)

Cut off the excess cable tie.

(4)

Install the rear case to the wall, box, etc., with 2 screws figure.

(5)

1. R (Red)

2. W (White)

3. B (Black)

Hole

Cable tie

(Small)

CAUTION

When connecting the remote

controller wires, do not overtighten

the screws.

Seal the cable outlet with putty to prevent dew condensation or insect from entering the box.

[Example]

•

Remote

controller cable

Connector

Screws

Rear case

Box

Ground the remote controller if it has

a earth (ground) wire.

Remote controller

Wrap the connector

and remote controller

wires with vinyl tape

or some other type of

insulation as shown

120

Hole

Hole 2

Hole 3

Unit : mm

33.5

4.5

12.5

45.3

63.5

83.5

15.3

Setting the dip switches

1 21

Set the remote controller DIP switches.

[Example]

Front case (back side)

DIP switch 1

Do not use this

DIP switch 2

OFF

No.

SW state

Detail

OFF

DIP

switch

♦

Cannot be used.

(Do not change)

♦

Dual remote controller setting

*Refer to

11.3. Dual remote controllers

♦

Cannot be used.

(Do not change)

♦

Cannot be used.

(Do not change)

♦

Cannot be used.

(Do not change)

♦

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)

FUNCTION SETTING

CAUTION

Confirm whether the wiring work for outdoor unit has been finished.
Confirm whether the cover for electric control box on the outdoor unit is close.

Turning on the power

Check the remote controller wiring and DIP switch settings.

(1)

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

(

)

case.

Check the indoor and outdoor unit wiring and circuit board switch settings, and then

(3)

turn on the indoor and outdoor units. After “9C” has flashed 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.

SU MO TU WE TH FR SA

Setting method

1 21

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.

•

Press the set temperature buttons (

(1)

) (

) and fan control button simultaneously for

more than 5 seconds to enter the function setting mode.

SU MO TU WE TH FR SA

Press the SET BACK button to select the indoor R.C. address.

SET BACK

SU MO TU WE TH FR SA

R.C. address of INDOOR UNIT

Press the set time buttons to select the function number.

(

)

SU MO TU WE TH FR SA

Function number

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Press the set temperature buttons (

(3)

) (

) to select the setting value.

The display flashes as shown to the right during setting value selection.

Press the TIMER SET button to confirm the setting. Press the TIMER SET button for a

(4)

few seconds until the setting value stops flashing.

If the setting value display changes or if “- -” is displayed when the flashing stops,

the setting value has not been set correctly. (An invalid setting value may have been

selected for the indoor unit.)

SU MO TU WE TH FR SA

Setting value

Repeat steps 2 to 5 to perform additional settings. Press the set temperature buttons

(5)

(

) (

) and fan control 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.

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

(

)

CAUTION

After turning off the power, wait 30 seconds or more before turning on it again. The

FUNCTION SETTING doesn’t become effective if it doesn’t do so.

Function setting

1 21

Filter Sign

The indoor unit has a sign to inform the user that it is time to clean the filter. Select the

•

time setting for the filter sign display interval in the table below according to the amount

of dust or debris in the room. If you do not wish the filter sign to be displayed, select the

setting value for “No indication”.

(The unit is factory-set to “03”.)

Setting Description

Function

Number

Setting

Value

Standard (2500 hours)

Long interval (5000 hours)

Short interval (1250 hours)

No indication

Setting the Static Pressure

Select appropriate static pressure according to the installation conditions.

•

(The unit is factory-set to “00”.)

Refer to the technical manual for details or follow the instructions of the duct designer.

•

Setting Description

Function

Number

Setting

Value

Normal (60Pa)

static pressure 1 (100Pa)

static pressure 2 (150Pa)

static pressure 3 (200Pa)

static pressure 4 (250Pa)

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 Description

Function

Number

Setting

Value

Standard (No correction)

Low control (-1.0°C)

Slightly lower control (-0.5°C)

Slightly warmer control (+0.5°C)

Warmer control (+1.0°C)

Setting the Heater 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 Description

Function

Number

Setting

Value

Standard (No correction)

Low control (-1.0°C)

Slightly lower control (-0.5°C)

Slightly warmer control (+0.5°C)

Warmer control (+1.0°C)

Auto Restart

(The setting value is factory-set to “00”.)

Setting Description

Function

Number

Setting

Value

Yes

Indoor Room Temperature Sensor Switching Function

(Wired remote controller only)

(The setting value is factory-set to “00”.)

Setting Description

Function

Number

Setting

Value

Only the sensor of the indoor unit is used

The sensor of the wired remote controller is used

Cool Air Prevention

This setting is used to set the fan speed when the compressor stops once the room

•

temperature has reached the set temperature during heating operation.

(The unit is factory-set to “00”.)

Setting Description

Function

Number

Setting

Value

Super low

Follow the setting on the remote controller

(corresponding to ventilation)

External input control

“Operation/Stop” mode or “Forced stop” mode can be selected.

•

(The unit is factory-set to “00”.)

Setting Description

Function

Number

Setting

Value

Operation/Stop mode

(Setting forbidden)

Forced stop mode

Room Temperature Control Switching

This setting is used to set the room temperature control method when the wired remote

•

controller is selected by the Indoor Room Temperature Sensor Switching Function.

(The unit is factory-set to “00”.)

Setting Description

Function

Number

Setting

Value

Control by the sensors of both the indoor unit

and the wired remote controller.

Control only by the sensor of the wired remote

controller.

Setting record

Record any changes to the settings in the following table.

Jumper wire

Setting Value

Filter Sign

Static Pressure

Cooler Room Temperature Correction

Heater Room Temperature Correction

Auto Restart

Room Temperature Sensor Switching

Cool Air Prevention

External input control

Room Temperature Control Switching

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

•

again.

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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.

•

When the THERMO SENSOR button is pressed, the lock display flashes because the

(1)

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.

Enable the room temperature sensor selection in FUNCTION SETTING, which will be

(1)

described later.

Press the THERMO SENSOR button for 5 seconds or more to select the temperature

(

)

sensor of the indoor unit or the remote controller.

Indoor unit

NOTE

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 flash when the THERMO SENSOR

button is pressed.

CAUTION

If the difference between the room temperature and wall temperature is great as the

external and internal walls are joined and the wall temperature is easily affected by the

outside air, the detected temperature may be different from the actual room temperature

because the sensor of the remote controller detects the temperature near the wall surface.

Especially when the remote controller is installed on a wall that is directly exposed to the

outside air, it is recommended to use the indoor unit temperature sensor.
Do not use the temperature sensor of the remote controller as a substitute for the

indoor unit temperature sensor which has problem in the temperature detection. (Solve

the problem of the indoor unit temperature sensor.)
If the unit is installed in a room with a ceiling of 3 m or higher, the temperature may not

be detected properly with the indoor unit temperature sensor as there may be a large

difference between the temperature near the ceiling and the floor.

In this case, it is recommended to take a measure such as installation of an optional

remote sensor and room air ventilation using a circulator.

TEST RUN

CHECK ITEMS

Is operation of each button on the remote control unit normal?

(1)

Is the drain normal?

(

)

Is there any abnormal noise and vibration during operation?

(3)

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

(4)

[Operation method]

For the operation method, refer to the Operating Manual.

•

Stop the air conditioner operation.

(1)

Press the MODE button and the FAN button simultaneously for 2 seconds or more to

(

)

start the test run.

Test run display

Press the START/STOP button to stop the test run.

(3)

If “C0” appears in the R.C. address display, there is a remote controller error.

R.C. address

Error code

Content

Incompatible indoor unit is connected

Indoor unit ↔ remote controller

communication error

CHECK LIST

Pay special attention to the check items below when installing the indoor unit(s). After

installation is complete, be sure to check the following check items again.

Check items

If not performed correctly

Check

box

Has the indoor unit been installed

correctly?

Vibration, noise,

indoor unit may drop

Has there been a check for gas leaks

(refrigerant pipes)?

No cooling, No heating

Has heat insulation work been

completed?

Water leakage

Does water drain easily from the

indoor units?

Water leakage

Is the voltage of the power source the

same as that indicated on the label on

the indoor unit?

No operation, heat or burn damage

Are the wires and pipes all connected

completely?

No operation, heat or burn damage

Is the indoor unit grounded?

Short circuit

Is the connection cable the specified

thickness?

No operation, heat or burn damage

Are the inlets and outlets free of any

obstacles?

No cooling, No heating

After installation is completed, has the

proper operation and handling been

explained to the user?

Operate the unit according to the

operating manual provided, and check

that it is operating normally.

SPECIAL INSTALLATION METHODS

CAUTION

Be sure to turn off the electrical breaker before making settings.
When setting DIP switches, do not touch any other parts on the circuit board directly

with your bare hands.

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)

1 2 3

Indoor unit 0

Indoor unit 1

Indoor unit 2

Indoor unit 3

Bus wire

Remote

controller cable

Remote controller

R W B

When earth (ground) wire is necessary

(2)

Set the R.C. address (DIP switch setting)

Set the R.C. address of each indoor unit using the DIP switch on the indoor unit

circuit board.

The DIP switch is normally set to 0.

SW 50

OFF

Control box

DIP switch

9380441038_IM.indb 10

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Set the R.C. address in accordance with the table below.

R.C. address

DIP switch

OFF

NOTE

Be sure to set consecutive R.C. address.

The indoor units cannot be operated if a number is skipped.



Settings when simultaneous multi included.

(3) Set the refrigerant circuit address (Remote controller setting)

Turn on all of the indoor units.

Turn on the indoor unit with the R.C. address 00 last. (Within 1 minute)

Set the refrigerant circuit address. (Assign the same number to all of the indoor

units connected to an outdoor unit.)

Refrigerant circuit

address

Function Number

Setting Value

00~15

(4) Set the “Primary” and “Secondary” settings. (Set the indoor unit that is connected to

the outdoor unit using a transmission cable as the “Primary”.)

Function Number

Setting Value

Primary

Secondary

After completing the function settings, turn off all of the indoor units, and then turn

them back on.

If error code 21, 22, 24 or 27 is displayed, there may be an incorrect setting. Perform

the remote controller setting again.

NOTE

When different indoor unit models are connected using the group control system, some

functions may no longer be available.

If the group control system contains multiple units that are operated simultaneously, con-

nect and set the units as shown below.

• Auto-changeover operates under the same mode with model R.C. address 00.

• It should not be connected to any other Gr that is not of the same series (A**G only).

Simultaneous

twin

Standard

pair

Remote

controller

Indoor

unit

Outdoor

unit

Outdoor

unit

Outdoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

R.C.address

(DIP switch setting)

: Transmission cable, Power supply cable
: Remote controller cable

: Bus wire

: Power supply cable

•

Primary/Secondary

(Function number 51)

•

Refrigerant circuit address

(Function number 02)

Simultaneous

triple

Make sure that the indoor unit with the R.C. address 0 is connected to the outdoor

unit using a transmission cable.

Fan delay setting

1 21

This setting can be used when the auxiliary heater is mounted.

When the operation is stopped when the indoor unit is operating with an auxiliary heater,

the operation continues 1 minutes.
(1) Jumper wire setting (indoor unit)

This setting is made by cutting the jumper wires on the circuit board of the indoor

unit.

JM42

JM41

JM40

Control box

Jumper wires

Jumper wire

JM state

JM 42

Connect

Invalidity (Factory setting)

Disconnect

Validity

Dual remote controllers

1 21

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

•

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

•

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

1 2 3

Indoor unit

Remote controller cable

Remote controller

When earth (ground)

wire is necessary

Primary unit

R W B

Secondary unit

(2)

Remote controller DIP switch 1 setting

Set the remote controller DIP switch 1 No. 2 according to the following table.

(Refer to 7.2. Setting the dip switches)

DIP SW 1-No. 2

Primary unit

OFF

Secondary unit

OPTIONAL PARTS

WARNING

Regulation of cable differs from each locality, refer in accordance with local rules.

External input and external output

Connection methods

• Wire modification

Use a tool to cut off the terminal on the end of the wire, and then remove the insulation

from the cut end of the wire.

Connect the wire with connecting wire with solder.

Important: Be sure to insulate the connection between the wires.

9380441038_IM.indb 11

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Option parts

External input/output wire

Insulated connection

Field supply

• Connection terminals

CN100

Operation status

output (White)

CN103

Control input

(Operation/stop)

(White)

CN101

Error status

output (Black)

CN160

External electrical

heater control

output (Orange)

CN161

Fresh air control

output (Green)

CLIP

Cable tie (Medium)

I.R. receiver unit / Remote sensor

21 21

Connection method

• Connection terminals

I.R. receiver unit

(CN130)

Remote sensor (CN113)

• Wiring arrangement

CLIP

Cable tie (Medium)

Connector

I.R. receiver unit

• Use 7 pins for I.R. receiver unit cable

Remote sensor

Remove the existing connector and replace it with the remote sensor connector (ensure

•

that the correct connector is used).

The original connector should be insulated to ensure that i

•

t does not come into contact

with other electrical circuitry.

Setting for room temperature control setting

When a remote sensor is connected, set the function setting of indoor unit as indicated

below.

Set Function Number “48” (Room temperature setting) to “01”

•

Setting for room temperature correction

When a remote sensor is connected, set the function setting of indoor unit as indicated

below.

Set Function Number “30” (Cooler air temperature correction) to “01”

•

Set Function Number “31” (Heater air temperature correction) to “01”

•

CUSTOMER GUIDANCE

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

Starting and stopping method, operation switching, temperature adjustment, timer, air

(1)

flow switching, and other remote controller operations.

Air filter removal and cleaning, and how to use the air louvers.

(

)

Give the operating and Installation Manuals to the customer.

(3)

If the signal code is changed, explain to the customer how it changed (the system

(4)

returns to signal code A when the batteries in the remote controller are replaced).

*(4) is applicable to using wireless remote control.

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ERROR CODES

[Troubleshooting at the remote control LCD]

This is possible only on the wired remote control.

[Self-diagnosis]

For the operation method, refer to the operating manual.

•

When the error indication “E:EE” is displayed, follow the following items to perform the

•

self-diagnosis. “E:EE” indicates an error has occurred.

SU MO TU WE TH FR SA

R.C. address of INDOOR UNIT

Error code

Ex. Self-diagnosis

Error display

Wired

remote

controller

Error

code

Mode

DESCRIPTION

OPERATION

lamp

(green)

TIMER

lamp

(orange)

ECO

lamp

(green)

●

(1)

●

(1)

◊

Communication Serial communication

error

●

(1)

●

(2)

◊

Communication Wired remote controller

communication error

●

(1)

●

(5)

◊

Check run unfinished

●

(2)

●

(1)

◊

R.C. address or
Refrigerant circuit
address setting error
[Simultaneous Multi]

●

(2)

●

(2)

◊

System

Indoor unit capacity error

●

(2)

●

(3)

◊

Combination error

●

(2)

●

(4)

◊

Connection R.C.

•

address error (indoor
secondary unit)
[Simultaneous Multi]
Connection R.C.

•

address error (indoor
unit or branch unit)

[Flexible Multi]

●

(2)

●

(7)

◊

Primary unit, secondary

unit set-up error

[Simultaneous Multi]

●

(3)

●

(1)

◊

Indoor unit

Power supply interruption

error

●

(3)

●

(2)

◊

Indoor unit PCB model

information error

●

(3)

●

(5)

◊

Indoor unit

Manual auto switch error

●

(3)

●

(9)

◊

Indoor unit

fan motor driving circuit

error.

●

(4)

●

(1)

◊

Indoor unit

Inlet air temp. sensor

error

●

(4)

●

(2)

◊

Indoor unit

Indoor Heat Ex. Middle

Temp. Sensor error

●

(5)

●

(1)

◊

Indoor unit

Indoor unit fan motor1

error

●

(5)

●

(3)

◊

Indoor unit

Drainage error

●

(5)

●

(7)

◊

Damper error

●

(5)

●

(9)

◊

Indoor unit

Indoor unit fan motor2

error

●

(5)

●

(15)

◊

Indoor unit

Indoor unit error

●

(6)

●

(2)

◊

Outdoor unit Outdoor unit model

information error

●

(6)

●

(3)

◊

Outdoor unit Inverter error

●

(6)

●

(4)

◊

Active filter error, PFC

circuit error

●

(6)

●

(5)

◊

Outdoor unit I.P.M. error

●

(6)

●

(10)

◊

Display PCB

microcomputers

communication error

●

(7)

●

(1)

◊

Outdoor unit Discharge temp. sensor

error

●

(7)

●

(2)

◊

Outdoor unit Compressor temp. sensor

error

●

(7)

●

(3)

◊

Outdoor unit

Heat Ex. centre temp.

•

sensor error

Heat Ex. Liquid outlet

•

temp. sensor error

●

(7)

●

(4)

◊

Outdoor unit Outdoor temp. sensor

error

●

(7)

●

(5)

◊

Suction Gas temp. sensor

error

●

(7)

●

(6)

◊

2-way valve temp. sen

•

sor error

3-way valve temp. sen-

•

sor error

●

(7)

●

(7)

◊

Outdoor unit Heat sink temp. sensor

error

●

(8)

●

(2)

◊

Sub-cool Heat Ex. gas

•

inlet temp. sensor error

Sub-cool Heat Ex. gas

•

outlet temp. sensor

error

●

(8)

●

(3)

◊

Liquid pipe temp. sensor

error

●

(8)

●

(4)

◊

Outdoor unit Current sensor error

●

(8)

●

(6)

◊

Outdoor unit

Pressure sensor error

•

High pressure switch

•

error

●

(9)

●

(4)

◊

Outdoor unit Over current error

●

(9)

●

(5)

◊

Outdoor unit Compressor control error

●

(9)

●

(7)

◊

Outdoor unit Outdoor unit fan motor1

error

●

(9)

●

(8)

◊

Outdoor unit

Outdoor unit fan motor2

error

●

(9)

●

(9)

◊

Outdoor unit 4-way valve error

●

(9)

●

(10)

◊

Coil (expansion valve)

error

●

(10)

●

(1)

◊

Refrigerant

system

Discharge temp. error

●

(10)

●

(3)

◊

Refrigerant

system

Compressor temp. error

●

(10)

●

(4)

◊

High pressure error

●

(10)

●

(5)

◊

Refrigerant

system

Low pressure error

●

(13)

●

(2)

◊

Branch boxes error

[Flexible Multi]

Display mode

●

: 0.5s ON / 0.5s OFF

◊

: 0.1s ON / 0.1s OFF

( ) : Number of flashing

9380441038_IM.indb 13

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