Fujitsu ASYG09KXCA series, ASYG12KXCA series Installation Manual

AIR CONDITIONER
Wall Mounted Type

For authorized service personnel only.[Original instructions]

1. 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

CAUTION

• The appliance, outlet and inlet shall be installed, operated and stored in a room with a

fl oor area larger than X m
Minimum installation space

09 type
12 type

M (kg): Amount of refrigerant charge ( IEC 60335-2-40 )

2

): Minimum room area

X (m

• Installation of this product must be done by experienced service technicians or profes-

sional installers only in accordance with this manual. Installation by non-professional
or improper installation of the product might cause serious accidents such as injury,
water leakage, electric shock, or fi re. If the product is installed in disregard of the
instructions in this manual, it will void the manufacturer’s warranty.

• Do not turn on the power until all work has been completed. Turning on the power be-

fore the work is completed can cause serious accidents such as electric shock or fi re.

• If refrigerant leaks when you are working, ventilate the area. If the leaking refrigerant

is exposed to a direct fl ame, it may produce a toxic gas.

• Installation must be performed in accordance with regulations, codes, or standards for

electrical wiring and equipment in each country, region, or the installation place.

• Do not use means to accelerate the defrosting process or to clean, other than those

recommended by the manufacturer.

• 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.

• The appliance shall be stored in a room without continuously operating ignition

sources (for example: open fl ames, an operating gas appliance or an operating
electric heater).

• Do not pierce or burn.

• Be aware that refrigerants may not contain an odour.

Indicates a potentially or imminently hazardous situation
which, if not avoided, could result in death or serious injury.

Indicates a potentially hazardous situation that may result in
minor or moderate injury or damage to property.

WARNING

2

.

M (kg) M ≤ 1.30

2

) 1.61

X (m

INSTALLATION MANUAL

PART No. 9319357096

Contents

1. SAFETY PRECAUTIONS .................................................................. 1

2. ABOUT THIS PRODUCT................................................................... 3

3. GENERAL SPECIFICATION ............................................................. 4

4. ELECTRICAL REQUIREMENT ......................................................... 4

5. SELECTING THE MOUNTING POSITION .......................................4

6. INSTALLATION WORK ..................................................................... 5

7. ELECTRICAL WIRING ..................................................................... 7

8. FINISHING ........................................................................................ 9

9. REMOVING AND REPLACING PARTS .......................................... 10

10. SETTING THE ORIENTATION OF THE HUMAN SENSOR ........... 10

11. TEST RUN ........................................................................................11

12. REMOTE CONTROLLER INSTALLATION .......................................11

13. SELECTING THE REMOTE CONTROLLER CUSTOM CODE .......11

14. FUNCTION SETTING.......................................................................11

15. CUSTOMER GUIDANCE ................................................................ 12

16. ERROR CODES .............................................................................. 12

CAUTION

• Read carefully all safety information written in this manual before you install or use the
air conditioner.

• Install the product by following local codes and regulations in force at the place of
installation, and the instructions provided by the manufacturer.

• This product is part of a set constituting an air conditioner. The product must not be
installed alone or be installed with non-authorized device by the manufacturer.

• Always use a separate power supply line protected by a circuit breaker operating on
all wires with a distance between contact of 3 mm for this product.

• To protect the persons, earth (ground) the product correctly, and use the power cable
combined with an Earth Leakage Circuit Breaker (ELCB).

• This product is not explosion proof, and therefore should not be installed in explosive
atmosphere.

• To avoid getting an electric shock, never touch the electrical components soon after
the power supply has been turned off. After turning off the power, always wait 5 min­utes or more before you touch the electrical components.

• This product contains no user-serviceable parts. Always consult experienced service
technicians for repairing.

• When moving or relocating the air conditioner, consult experienced service technicians
for disconnection and reinstallation of the product.

• Do not touch the aluminum fi ns of heat exchanger built-in the indoor or outdoor unit to
avoid personal injury when you install or maintain the unit.

• Do not place any other electrical products or household belongings under the product.
Condensation dripping from the product might get them wet, and may cause damage
or malfunction to the property.

• Be careful not to scratch the air conditioner when handling it.

• After installation, explain correct operation to the customer, using the operating manual.

Precautions for using R32 refrigerant

The basic installation work procedures are the same as conventional refrigerant (R410A,
R22) models.
However, pay careful attention to the following points:

Since the working pressure is 1.6 times higher than that of refrigerant R22 models,
some of the piping and installation and service tools are special. (See “2.1. Special
tools for R32 (R410A)”.)
Especially, when replacing a refrigerant R22 model with a new refrigerant R32 model,
always replace the conventional piping and flare nuts with the R32 and R410A piping and
fl are nuts on the outdoor unit side.
For R32 and R410A, the same fl are nut on the outdoor unit side and pipe can be used.

Models that use refrigerant R32 and R410A have a different charging port thread diam­eter to prevent erroneous charging with refrigerant R22 and for safety. Therefore, check
beforehand. [The charging port thread diameter for R32 and R410A is 1/2-20 UNF.]

Be more careful than R22 so that foreign matter (oil, water, etc.) does not enter the
piping. Also, when storing the piping ,securely seal the opening by pinching, taping, etc.
(Handling of R32 is similar to R410A.)

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Türkçe

Türkçe

En-1

CAUTION

1-Installation (Space)

• That the installation of pipe-work shall be kept to a minimum.

• That pipe-work shall be protected from physical damage.

• The appliance shall not be installed in an unventilated space, if that space is smaller
than X m2. (Refer to “1. SAFETY PRECAUTIONS, Minimum installation space”.)

• That compliance with national gas regulations shall be observed.

• That mechanical connections shall be accessible for maintenance purposes.

• In cases that require mechanical ventilation, ventilation openings shall be kept clear
of obstruction.

• When disposing of the product is used, be based on national regulations, properly
processed.

2-Servicing
2-1 Service personnel

• Any person who is involved with working on or breaking into a refrigerant circuit
should hold a current valid certifi cate from an industry-accredited assessment
authority, which authorises their competence to handle refrigerants safely in accor­dance with an industry recognised assessment specifi cation.

• Servicing shall only be performed as recommended by the equipment manufacturer.
Maintenance and repair requiring the assistance of other skilled personnel shall be
carried out under the supervision of the person competent in the use of fl ammable
refrigerants.

• Servicing shall be performed only as recommended by the manufacturer.

2-2 Work

• Prior to beginning work on systems containing fl ammable refrigerants, safety checks
are necessary to ensure that the risk of ignition is minimized. For repair to the refrig­erating system, the precautions in 2-2 to 2-8 shall be complied with prior to conduct­ing work on the system.

• Work shall be undertaken under a controlled procedure so as to minimize the risk of
a fl ammable gas or vapour being present while the work is being performed.

• All maintenance staff and others working in the local area shall be instructed on the
nature of work being carried out.

• Work in confi ned spaces shall be avoided.

• The area around the workspace shall be sectioned off.

• Ensure that the conditions within the area have been made safe by control of fl am-
mable material.

2-3 Checking for presence of refrigerant

• The area shall be checked with an appropriate refrigerant detector prior to and during
work, to ensure the technician is aware of potentially fl ammable atmospheres.

• Ensure that the leak detection equipment being used is suitable for use with fl am-
mable refrigerants, i.e. nonsparking, adequately sealed or intrinsically safe.

2-4 Presence of fi re extinguisher

• If any hot work is to be conducted on the refrigeration equipment or any associated
parts, appropriate fi re extinguishing equipment shall be available at hand.

• Have a dry powder or CO

2-5 No ignition sources

• No person carrying out work in relation to a refrigeration system which involves
exposing any pipe work that contains or has contained fl ammable refrigerant shall
use any sources of ignition in such a manner that it may lead to the risk of fi re or
explosion.

• All possible ignition sources, including cigarette smoking, should be kept suffi ciently
far away from the site of installation, repairing, removing and disposal, during which
fl ammable refrigerant can possibly be released to the surrounding space.

• Prior to work taking place, the area around the equipment is to be surveyed to make
sure that there are no fl ammable hazards or ignition risks. “No Smoking” signs shall
be displayed.

2-6 Ventilated area

• Ensure that the area is in the open or that it is adequately ventilated before breaking
into the system or conducting any hot work.

• A degree of ventilation shall continue during the period that the work is carried out.

• The ventilation should safely disperse any released refrigerant and preferably expel
it externally into the atmosphere.

2-7 Checks to the refrigeration equipment

• Where electrical components are being changed, they shall be fi t for the purpose
and to the correct specifi cation.

• At all times the manufacturer’s maintenance and service guidelines shall be followed.

• If in doubt consult the manufacturer’s technical department for assistance.

• The following checks shall be applied to installations using fl ammable refrigerants.

- The charge size is in accordance with the room size within which the refrigerant
containing parts are installed.

- The ventilation machinery and outlets are operating adequately and are not
obstructed.

- If an indirect refrigerating circuit is being used, the secondary circuit shall be
checked for the presence of refrigerant.

- Marking to the equipment continues to be visible and legible. Markings and signs
that are illegible shall be corrected.

- Refrigeration pipe or components are installed in a position where they are unlikely
to be exposed to any substance which may corrode refrigerant containing compo­nents, unless the components are constructed of materials which are inherently
resistant to being corroded or are suitably protected against being so corroded.

fi re extinguisher adjacent to the charging area.

2

CAUTION

2-8 Checks to electrical devices

• Repair and maintenance to electrical components shall include initial safety checks
and component inspection procedures.

• If a fault exists that could compromise safety, then no electrical supply shall be con­nected to the circuit until it is satisfactorily dealt with.

• If the fault cannot be corrected immediately but it is necessary to continue operation,
an adequate temporary solution shall be used.

• This shall be reported to the owner of the equipment so all parties are advised.

• Initial safety checks shall include.

- That capacitors are discharged: this shall be done in a safe manner to avoid pos­sibility of sparking.

- That there no live electrical components and wiring are exposed while charging,
recovering or purging the system.

- That there is continuity of earth bonding.

3-Repairs to sealed components

• During repairs to sealed components, all electrical supplies shall be disconnected
from the equipment being worked upon prior to any removal of sealed covers, etc.

• If it is absolutely necessary to have an electrical supply to equipment during servic­ing, then a permanently operating form of leak detection shall be located at the most
critical point to warn of a potentially hazardous situation.

• Particular attention shall be paid to the following to ensure that by working on electri­cal components, the casing is not altered in such a way that the level of protection is
affected.

• This shall include damage to cables, excessive number of connections, terminals not
made to original specifi cation, damage to seals, incorrect fi tting of glands, etc.

• Ensure that apparatus is mounted securely.

• Ensure that seals or sealing materials have not degraded such that they no longer
serve the purpose of preventing the ingress of fl ammable atmospheres.

• Replacement parts shall be in accordance with the manufacturer’s specifi cations.

NOTE: The use of silicon sealant may inhibit the effectiveness of some types of leak

detection equipment.
Intrinsically safe components do not have to be isolated prior to working on
them.

4-Repair to intrinsically safe components

• Do not apply any permanent inductive or capacitance loads to the circuit without
ensuring that this will not exceed the permissible voltage and current permitted for
the equipment in use.

• Intrinsically safe components are the only types that can be worked on while live in
the presence of a fl ammable atmosphere.

• The test apparatus shall be at the correct rating.

• Replace components only with parts specifi ed by the manufacturer.

• Other parts may result in the ignition of refrigerant in the atmosphere from a leak.

5-Cabling

• Check that cabling will not be subject to wear, corrosion, excessive pressure, vibra­tion, sharp edges or any other adverse environmental effects.

• The check shall also take into account the effects of aging or continual vibration from
sources such as compressors or fans.

6-Detection of fl ammable refrigerants

• Under no circumstances shall potential sources of ignition be used in the searching
for or detection of refrigerant leaks.

• A halide torch (or any other detector using a naked fl ame) shall not be used.

7-Leak detection methods

• Electronic leak detectors shall be used to detect fl ammable refrigerants, but the
sensitivity may not be adequate, or may need re-calibration. (Detection equipment
shall be calibrated in a refrigerant-free area.)

• Ensure that the detector is not a potential source of ignition and is suitable for the
refrigerant used.

• Leak detection equipment shall be set at a percentage of the LFL of the refrigerant
and shall be calibrated to the refrigerant employed and the appropriate percentage of
gas (25 % maximum) is confi rmed.

• Leak detection fl uids are suitable for use with most refrigerants but the use of
detergents containing chlorine shall be avoided as the chlorine may react with the
refrigerant and corrode the copper pipe-work.

• If a leak is suspected, all naked fl ames shall be removed/extinguished.

• If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall
be recovered from the system, or isolated (by means of shut off valves) in a part of
the system remote from the leak.
Oxygen free nitrogen (OFN) shall then be purged through the system both before
and during the brazing process.

En-2

CAUTION

8-Removal and evacuation

• When breaking into the refrigerant circuit to make repairs – or for any other
purpose –conventional procedures shall be used.
However, it is important that best practice is followed since fl ammability is a consid-
eration.
The following procedure shall be adhered to:

• remove refrigerant

• purge the circuit with inert gas

• evacuate

• purge again with inert gas

• open the circuit by cutting or brazing

• The refrigerant charge shall be recovered into the correct recovery cylinders.

• The system shall be “fl ushed” with OFN to render the unit safe.

• This process may need to be repeated several times.

• Compressed air or oxygen shall not be used for this task.

• Flushing shall be achieved by breaking the vacuum in the system with OFN and
continuing to fi ll until the working pressure is achieved, then venting to atmosphere,
and fi nally pulling down to a vacuum.

• This process shall be repeated until no refrigerant is within the system.

• When the fi nal OFN charge is used, the system shall be vented down to atmospheric
pressure to enable work to take place.

• This operation is absolutely vital if brazing operations on the pipe work are to take
place.

• Ensure that the outlet for the vacuum pump is not close to any ignition sources and
there is ventilation available.

9-Charging procedures

• In addition to conventional charging procedures, the following requirements shall be
followed.

- Ensure that contamination of different refrigerants does not occur when using
charging equipment.
Hoses or lines shall be as short as possible to minimize the amount of refrigerant
contained in them.

- Cylinders shall be kept upright.

- Ensure that the refrigeration system is earthed prior to charging the system with
refrigerant.

- Label the system when charging is complete (if not already).

- Extreme care shall be taken not to overfi ll the refrigeration system.

• Prior to recharging the system it shall be pressure tested with OFN.

• The system shall be leak tested on completion of charging but prior to commission­ing.

• A follow up leak test shall be carried out prior to leaving the site.

10-Decommissioning

• Before carrying out this procedure, it is essential that the technician is completely
familiar with the equipment and all its details.

• It is recommended good practice that all refrigerants are recovered safely.

• Prior to the task being carried out, an oil and refrigerant sample shall be taken in
case analysis is required prior to re-use of reclaimed refrigerant.

• It is essential that electrical power is available before the task is commenced.

a) Become familiar with the equipment and its operation.
b) Isolate system electrically.
c) Before attempting the procedure ensure that:

• mechanical handling equipment is available, if required, for handling refriger­ant cylinders;

• all personal protective equipment is available and being used correctly;

• the recovery process is supervised at all times by a competent person;

• recovery equipment and cylinders conform to the appropriate standards.

d) Pump down refrigerant system, if possible.
e) If a vacuum is not possible, make a manifold so that refrigerant can be removed

from various parts of the system.
f) Make sure that cylinder is situated on the scales before recovery takes place.
g) Start the recovery machine and operate in accordance with manufacturer’s

instructions.
h) Do not overfi ll cylinders. (No more than 80 % volume liquid charge).
i) Do not exceed the maximum working pressure of the cylinder, even temporarily.
j) When the cylinders have been fi lled correctly and the process completed, make

sure that the cylinders and the equipment are removed from site promptly and all
isolation valves on the equipment are closed off.

k) Recovered refrigerant shall not be charged into another refrigeration system un-

less it has been cleaned and checked.

11-Labelling

• Equipment shall be labelled stating that it has been de-commissioned and emptied
of refrigerant.

• The label shall be dated and signed.

• Ensure that there are labels on the equipment stating the equipment contains fl am-
mable refrigerant.

CAUTION

12-Recovery

• When removing refrigerant from a system, either for servicing or decommissioning, it
is recommended good practice that all refrigerants are removed safely.

• When transferring refrigerant into cylinders, ensure that only appropriate refrigerant
recovery cylinders are employed.

• Ensure that the correct number of cylinders for holding the total system charge are
available.

• All cylinders to be used are designated for the recovered refrigerant and labelled for
that refrigerant (i.e. special cylinders for the recovery of refrigerant).

• Cylinders shall be complete with pressure relief valve and associated shut-off valves
in good working order.

• Empty recovery cylinders are evacuated and, if possible, cooled before recovery
occurs.

• The recovery equipment shall be in good working order with a set of instructions
concerning the equipment that is at hand and shall be suitable for the recovery of
fl ammable refrigerants.

• In addition, a set of calibrated weighing scales shall be available and in good working
order.

• Hoses shall be complete with leak-free disconnect couplings and in good condition.

• Before using the recovery machine, check that it is in satisfactory working order, has
been properly maintained and that any associated electrical components are sealed
to prevent ignition in the event of a refrigerant release.
Consult manufacturer if in doubt.

• The recovered refrigerant shall be returned to the refrigerant supplier in the correct
recovery cylinder, and the relevant Waste Transfer Note arranged.

• Do not mix refrigerants in recovery units and especially not in cylinders.

• If compressors or compressor oils are to be removed, ensure that they have been
evacuated to an acceptable level to make certain that fl ammable refrigerant does not
remain within the lubricant.

• The evacuation process shall be carried out prior to returning the compressor to the
suppliers.

• Only electric heating to the compressor body shall be employed to accelerate this
process.

• When oil is drained from a system, it shall be carried out safely.

Explanation of symbols displayed on the indoor unit or outdoor unit.

This symbol shows that this appliance uses a fl ammable

WARNING

CAUTION

CAUTION

CAUTION

refrigerant.
If the refrigerant is leaked and exposed to an external igni­tion source, there is a risk of fi re.

This symbol shows that the operation manual should be
read carefully.

This symbol shows that a service personnel should be
handling this equipment with reference to the installation
manual.

This symbol shows that information is available such as
the operating manual or installation manual.

2. ABOUT THIS PRODUCT

2.1. Special tools for R32 (R410A)

Tool name Change from R22 to R32 (R410A)

Pressure is high and cannot be measured with a R22

Gauge manifold

Charge hose

Vacuum pump

Gas leakage detector

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 value or
capillary tube may become blocked with contaminants.
As an air conditioner using R32 (R410A) incurs pressure higher than when using R22, it is
necessary to choose adequate materials.

gauge. To prevent erroneous mixing of other refrigerants,
the diameter of each port has been changed.
It is recommended to use gauge with seals -0.1 to 5.3 MPa
(-1 to 53 bar) for high pressure.

-0.1 to 3.8 MPa (-1 to 38 bar) for low pressure.

To increase pressure resistance, the hose material and base
size were changed. (R32/R410A)

A conventional vacuum pump can be used by installing a
vacuum pump adapter.
(Use of a vacuum pump with a series motor is prohibited.)

Special gas leakage detector for HFC refrigerant R410A or
R32.

En-3

WARNING

• Do not use the existing (for R22) piping and fl are nuts.
If the existing materials are used, the pressure inside the refrigerant cycle will rise and
cause failure, injury, etc. (Use the special R32/R410A materials.)

• Use (refi ll or replace with) specifi ed refrigerant (R32) only. Use of unspecifi ed refriger-
ant can cause product malfunction, burst, or injury.

• Do not mix any gas or impurities except specifi ed refrigerant (R32). Infl ow of air or ap-
plication of unspecifi ed material makes the internal pressure of the refrigerant cycle too
high, and may cause product malfunction, burst of piping, or injury.

• For appropriate working of the air conditioner, install it as written in this manual.

• To connect indoor unit and outdoor unit, use air conditioner piping and cables available
through your local distributor. This manual describes proper connections using such
installation set.

• Do not turn on the power until all work has been completed.

3. GENERAL SPECIFICATION

This INSTALLATION MANUAL briefl y outlines where and how to install the air conditioning
system. Please read over the entire set of instructions for the indoor and outdoor units and
make sure all accessory parts listed are with the system before beginning.

3.1. Type of copper pipe and insulation material

CAUTION

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

Gas pipe size (thickness) [mm] Liquid pipe size (thickness) [mm]

Ø

9.52 (3/8 in.)

Ø

6.35 (1/4 in.)

CAUTION

This manual describes how to install the indoor unit only. To install the outdoor unit, (if
any), refer to the installation manual included in each product.

2.2. Accessories

The following installation accessories are supplied. Use them as required.

Name and Shape

Operating Manual

Operating Manual
(CD-ROM)

Installation Manual
(This manual)

Installation Notice
Sheet

Remote controller

Remote controller holder

Wall hook bracket

* This product has a wireless LAN adapter as accessory.

Be sure to keep the wireless LAN label attached to the adapter by writing the details
down or pasting it on the list in the last section of the setting manual for wireless LAN
adapter.

The following items are necessary to install this air conditioner. (The items are not includ­ed with the air conditioner and must be purchased separately.)

Name Q’ty Name Q’ty

Connection pipe assembly 1 Wall cap 1
Connection cable (4-conductor)
Wall pipe 1 Drain hose 1
Decorative tape 1 Tapping screws 1 set
Vinyl tape 1 Sealant 1

Q’ty

1

1

1

1

1

1

1

1 Saddle 1 set

Name and Shape

Cloth tape

Tapping screws (Large)

Tapping screws (Small)

Battery

Setting Manual
(for WLAN control*)

Wireless LAN adapter with
cable (with attached wireless
LAN label*)

Q’ty

1

11

2

2

1

1

CAUTION

• Wrap heat insulation around both of the gas pipe and the liquid pipe.
No heat-insulation work or incorrect heat-insulation work may cause water leaks.

• In a reverse cycle model, use heat insulation with heat resistance above 120 °C.

• If expected humidity of the installation location of refrigerant pipes is higher than 70
%, wrap the heat insulation around the refrigerant pipes.
If the expected humidity is between 70 % and 80 %, use heat insulation that has
thickness of 15 mm or more.
If the expected humidity is higher than 80 %, use heat insulation that has thickness
of 20 mm or more.

• Using of thinner heat insulation than specifi ed above may cause a condensation on
the surface of the insulation.

• Use heat insulation with thermal conductivity of 0.045 W/(

m•K

) or less, at 20 °C.

3.2. Additional materials required for installation

A. Refrigeration (armored) tape
B. Insulated staples or clamps for connecting wire (See your local electrical codes.)
C. Putty
D. Refrigeration lubricant

E. Clamps or saddles to secure refrigerant piping

4. ELECTRICAL REQUIREMENT

The indoor unit is powered from the outdoor unit. Do not power indoor unit from separate
power source.

WARNING

Standard for electrical wiring and equipment differs in each country or region. Before you
start electrical working, confi rm related regulations, codes, or standards.

2

Cable

Connection cable

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

Conductor size [

mm

] Type

1.5 Type 60245 IEC 57

Remarks

3 cable + Earth (Ground),

1 Ø 230 V

5. SELECTING THE MOUNTING POSITION

Decide the mounting position with the customer as follows:

(1) Install the indoor unit level on a strong wall which is not subject to vibration.
(2) The inlet and outlet ports should not be obstructed : the air should be able to blow all

over the room.
(3) Install the unit a dedicated electrical branch circuit.
(4) Do not install the unit where it will be exposed to direct sunlight.
(5) Install the unit where connection to the outdoor unit is easy.
(6) Install the unit where the drain pipe can be easily installed.
(7) Take servicing, etc. into consideration and leave the spaces shown in “6.1. Installation

dimensions”. Also install the unit where the fi lter can be removed.
(8) This product has a wireless LAN adapter as accessory. Refer to “7.4.1. Before

installing wireless LAN adapter” to decide on the place of installation.
Correct initial installation location is important because it is diffi cult to move the unit after it

is installed.

WARNING

Install the indoor unit where is capable to support the weight of the unit. Secure the
unit fi rmly so that the unit does not topple or fall.

En-4

CAUTION

Do not install the unit in the following areas:

• Area with high salt content, such as at the seaside. It will deteriorate metal parts, caus­ing the parts to fail or the unit to leak water.

• Area fi lled 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 fail or the unit to leak
water.

• Area where is close to heat sources.

• 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 fi bers or
fl ammable dust, or volatile in fl ammables such as paint thinner or gasoline.

• If gas leaks and settles around the unit, it can cause a fi re.

• 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.

• 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.)

• If children under 10 years old may approach the unit, take preventive measures so that
they cannot reach the unit.

• Install the indoor unit on the wall where the height from the fl oor is more than 1.8 m.

6. INSTALLATION WORK

WARNING

During transportation or relocation of the indoor unit, pipes shall be covered with the
wall hook bracket for protection. Do not move the appliance by holding the indoor unit
pipes.
(The stress applied to the pipe joints may cause the fl ammable gas to leak during
operation.)

CAUTION

• Do not hit or push the human sensor. This may lead to damage or malfunction.

• Do not touch the human sensor. Any scratches or dirt may lead to incorrect detection.

• Do not place large objects near the
sensor’s detection area.

Detection range of the

Vertical angle 90° (Side view)

human

7 m

You can change the orientation of the human sensor in accordance with the installation
position of the indoor unit. (Refer to “10. SETTING THE ORIENTATION OF THE HUMAN
SENSOR”.)

6.1. Installation dimensions

74 mm or over*

103 mm
or over**

1.8 m or over

Remote
controller

* The distance between the wall hook bracket and the ceiling should be 74 mm or more.
** The side next to the sidewall must follow the size indicated in figure.
*** If the depth of the obstacle is more than 95mm, please keep the distance from the

indoor unit to the obstacle more than 100mm.

Remote
controller
holder

Tapping screw
(small)

human

sensor. Also keep heating units outside the

sensor is as follows.

Horizontal angle 100° (Top view)

90°

Wall hook bracket

(Wall cap)

The flare connection
part should be installed
outdoors.

7 m

50°50°

Lowest position of
the dual fan

100 mm
or over**

100 mm
or over***

Obstacles such
as curtains

50 mm
or over

65 mm

95 mm

6.2. Indoor unit piping direction

The piping can be connected in the 3 directions in the fi gure. When the piping is con-
nected in direction (B) or (C), cut along the piping groove in the side of the front panel with
a hacksaw.

(Rear)

(B) Right

outlet

(C) Bottom

(A) Rear

outlet

outlet

6.3. Cutting the hole in the wall for the connecting piping

(1) Cut a 65 mm diameter hole in the wall at the position shown in the following.
(2) Cut the hole so that the outside end is lower (5 to 10 mm) than the inside end.
(3) Always align the center of the wall hole. If misaligned, water leakage will occur.

Cut the wall pipe to match the wall thickness, stick it into the wall cap, fasten the cap with

(4)

vinyl tape, and stick the pipe through the hole.

(5) For left piping and right piping, cut the hole a little lower so that drain water will fl ow

freely.

Wall hook bracket

Fasten with vinyl tape

Wall cap
(Field supply)

Wall pipe
(Field supply)

(Inside)

Centring marks

65 mm hole

5~10 mm

Wall

(Outside)

WARNING

Always use the wall pipe. If the wall pipe is not used, the cable that is connected between
the indoor unit and the outdoor unit may touch metal, and cause an electric discharge.

6.4. Installing the wall hook bracket

(1) Install the wall hook bracket so that it is correctly positioned horizontally and vertically.

If the wall hook bracket is titled, water will drip to the fl oor.

(2)

Install the wall hook bracket so that it is strong enough to support the weight of the unit.

• Fasten the wall hook bracket to the wall with 9 or more screws through the holes near
the outer edge of the bracket.

• Check that there is no rattle at the wall hook bracket.

Wall hook bracket

CAUTION

Install the wall-hook bracket both horizontally and vertically aligned.
Misaligned installation may cause water leakage.

Tapping screw (large)
(Accessory, 9 pcs)

En-5

6.5.

Forming the drain hose and pipe

6.6. Flare connection (Pipe connection)

CAUTION

• Insert drain hose and drain cap securely. Drain should slope down to avoid water leakage.

• When inserting the drain hose, no other material than water should be applied.
Application of other material than water will cause deterioration of the hose, and may
cause water leakage.

• After you remove a drain hose, be sure to attach the drain cap.

• When you secure the piping and drain hose with tape, arrange the drain hose so that
it is at the bottom of the piping.

• For drain hose piping in low temperature environment, you need to apply freeze
protection to prevent a frozen drain hose.
After cooling operation is performed in low temperature environment, (when outdoor
temperature under 0 °C,) water in the drain hose could be frozen. Frozen drain water
will block the water fl ow in the hose, and may cause water leakage at the indoor unit.

[Rear piping, Right piping, Bottom piping]

• Install the indoor unit piping in the direction of the wall hole and bind the drain hose
and pipe together with vinyl tape.

• Install the piping so that the drain hose is at the bottom.

• Wrap the pipes of the indoor unit that are visible from the outside with decorative tape.

Right piping

Bottom piping

Bind with vinyl tape

Pipe (top)

Rear piping

Indoor unit drain hose
(bottom)

CAUTION

Insert the drain hose and drain cap into the drain port, making sure that it comes
in contact with the back of the drain port, and then mount it. If the drain hose is not
connected properly, leaking will occur.

[Installing the indoor unit]

• Hang the indoor unit from the hooks at the top of the wall hook bracket.

• Insert the spacer, etc. between the indoor unit and the wall hook bracket and separate

the bottom of the indoor unit from the wall.

Indoor unit

(Spacer)

Wall hook bracket

Top hooks

CAUTION

Tighten the flare nuts with a torque wrench using the specified tightening method.
Otherwise, the fl are nuts could break after a prolonged period, causing refrigerant to leak
and generate hazardous gas if the refrigerant comes into contact with a fl ame.

6.6.1. Flaring

Use special pipe cutter and fl are tool designed for R410A or R32 pipework.
(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 any burrs.
(3) Insert the fl are nut (always use the fl are nut attached to the indoor unit(s) and outdoor

unit or branch box respectively) onto the pipe and perform the fl are processing with a
fl are tool. Use the special R410A or R32 fl are tool, or the conventional fl are tool. Leak-
age of refrigerant may result if other fl are nuts are used.

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

entering the pipes.

Check if [L] is flared uniformly

B

and is not cracked or scratched.

Die

A

Pipe

Pipe outside diameter

[mm (in.)]

6.35 (1/4)

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 fl are tools to fl are R32 pipes, the dimension A should be approx-
imately 0.5 mm more than indicated in the table (for fl aring with R32 fl are tools) to achieve
the specifi ed fl aring. Use a thickness gauge to measure the dimension A.

Width across

flats

Pipe outside diameter [mm (in.)]

Dimension A [mm]
Flare tool for R32,

6.35 (1/4) 17

9.52 (3/8) 22

12.70 (1/2) 26

15.88 (5/8) 29

19.05 (3/4) 36

L

Dimension B [mm]

clutch type

9.1

0 to 0.5

Width across flats

of Flare nut [mm]

6.6.2. Bending pipes

CAUTION

To prevent breaking of the pipe, avoid sharp bends.

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

Wall hook
bracket

Indoor
unit

• After hooking the indoor unit to the top hook, hook the fi ttings of the indoor unit to the 2

bottom hooks while lowering the unit and pushing it against the wall.

(Fitting)

Bottom hooks

En-6

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

• Bend R70 mm or more with a pipe bender.

• 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 3 times.

• When bending the pipe, do not bend it as
is. The pipe will be collapsed. In this case,
cut the insulating pipe with a sharp cutter
as shown on the right, and bend it after
exposing the pipe. After bending the pipe
as you want, be sure to put the heat insu­lating pipe back on the pipe, and secure it
with tape.

Insulating
Pipe

Pipe

Cutter

Cut line

6.6.3. Pipe connection

WARNING

• The fl are connection shall not be performed indoors.

CAUTION

Be sure to Install the pipe against the port on the indoor unit correctly. If the centering
is improper, the fl are nut cannot tighten smoothly. If the fl are nut is forced to turn, the
threads will be damaged.

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

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.

Tighten the fl are nuts with a torque wrench using the specifi ed tightening method.
Otherwise, the fl are nuts could break after a prolonged period, causing refrigerant to
leak and generate hazardous gas if the refrigerant comes into contact with a fl ame.

Connect the piping so that the control box cover can easily be removed for servicing
when necessary.

In order to prevent water from leaking into the control box, make sure that the piping
is well insulated.

When the flare nut is tightened properly by your hand, hold the body side coupling with a
wrench, then tighten with a torque wrench. (See the table below for the flare nut tightening

torques.)

Tighten with 2 wrenches.

Holding wrench

Torque wrench

Flare nut

7.2.

Indoor unit wiring

(1) Remove the intake grill. (Refer to “9.1. Intake grill removal and installation”.)
(2) Remove the tapping screw for the wire cover and remove the wire cover.

Wire cover

Screw

(3) Remove the tapping screw and while minding the cable clamp hook, remove the cable

clamp.

Cable clamp

Screw

Hook

Indoor unit pipe
(Body side)

Connection pipe

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)

Do not remove the cap from the connection pipe before connecting the pipe.

7. ELECTRICAL WIRING

CAUTION

Be careful not to generate a spark as follows for using a fl ammable refrigerant.

• Do not remove the fuse while the power is on.

• Do not disconnect the wiring while the power is on.

• It is recommended to position the outlet connection in a high position. Place the
cords so that they do not get tangled.

7.1.

Wiring system diagram

WARNING

• Before connecting the wires, make sure the power supply is OFF.

• Every wire must be connected fi rmly.

• No wire should be allowed to touch refrigerant tubing, the compressor, or any mov-

ing part.

• Loose wiring may cause the terminal to overheat or result in unit malfunction. A fi re

hazard may also exist. Therefore, be sure all wiring is tightly connected.

• Connect wires to the matching numbers of terminals.

INDOOR UNIT

TERMINAL

Power line

Control line

Earth (Ground) line

OUTDOOR UNIT

Please connect to the
specifi ed terminal.

7.3. How to connect wiring to the terminals

Caution when wiring cable

To strip off the insulation of a lead wire, always use a special tool such as a wire stripper.
If there is no special tool, carefully strip off the insulation by using a knife or other utensil.

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

terminal block.

(2) Securely clamp the ring terminals to the wires by using an appropriate tool so that the

wires do not come loose.

Strip : 10 mm

(3) Connect specifi ed wires securely, and fasten them so that there is no stress applied on

the terminals.

(4) Use a screwdriver with an appropriate bit size to tighten the terminal screws. Using of

screwdriver with inappropriate bit size will damage the screw heads, and the screws
will not be tightened properly.

(5) Do not overtighten the terminal screws. Otherwise, the screws may break.

Screw with special washer

Wire

Ring terminal

Terminal blocks

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

Tightening torque [N·m (kgf·cm)]

M4 screw 1.2 to 1.8 (12 to 18)

• Match the terminal block numbers and connection cable colors with those of the
outdoor unit. Incorrect wiring may cause a fi re.

• Connect the connection cables fi rmly to the terminal block. Imperfect installation may
cause a fi re.

• When fi xing the connection cable with the cable clamp, always fasten the cable at the
plastic jacket portion, but not at the insulator portion. If the insulator is chafed, electric
leakage may occur.

• Always connect the earth (ground) wire. Improper earthing (grounding) work can

cause electric shocks.

• Do not use the earth (ground) screw for the indoor unit to the outdoor unit unless it is

specifi ed.

Ring terminal

Sleeve

Screw with special washer

Ring terminal

Wire

CAUTION

En-7

7.4. Wireless LAN adapter installation

7.4.1. Before installing wireless LAN adapter

CAUTION

• Do not bundle the wireless LAN adapter wiring with the connection cable running
between the indoor and outdoor units, or the power supply cable.

• Install the wireless LAN adapter near the wireless router. (The connection will be­come unstable if it is placed further away, which will make using the system more
diffi cult)

• Install the wireless LAN adapter between the indoor unit and wireless router.

• Certain types of wall materials may shut out wireless communications.

• Do not touch the heat exchanger.

• During installing or removing operation, be sure not to have wire caught by parts or
draw it hard. Or it may result troubles to the air conditioner.

• Please do not install the wireless LAN adapter in the following places. Otherwise,
radio communication may be interfered.

- Places exposed to direct sunlight

- Places subject to extremely high and low temperatures, such as near the outlet

port of the air conditioner main body

- Near the air conditioner air inlet

- Places with high humidity

- Places near moving parts of the air conditioner main body

- Places near the bottom of the air conditioner main body

- Inside or on the side of the air conditioner main body

- Near microwave ovens

- Within 1 m of a TV or radio

- Places in the reach of children

- Near automatic control devices such as automatic door sensors or fi re detectors

- Places with oil, vapour or fl ammable gases

- Near medical equipment, pacemakers, defi brillators or other devices

- Places where the wireless LAN adapter could get wet, such as in the bathroom

- Places where the wireless LAN adapter is diffi cult to access for maintenance

• Please install the wireless LAN adapter in a place where the switches and buttons
can be operated and where the lamp display can be confi rmed. (In the areas shown
below.)

(4) Remove the electrical equipment lid tabs (left and right, 2 places), pull the knob in the

direction of the arrow and remove the electrical equipment cover.

Electrical
equipment lid

Ta b

(5) Gather the connection cable and wireless LAN adapter wiring tips with an item like tape.

Connection cable

(6) Pull the gathered wiring to the front side through the back of the indoor unit.

Knob

Bind together with
tape, etc.

Wireless LAN
adapter wiring

7.4.2. Installation work

WARNING

Disconnect the power supply or turn off the breaker before starting work. Failure to
disconnect the power supply may lead to electric shock or fi re.

CAUTION

Discharge static electricity on your body before starting work. If static electricity is not
discharged, there is a risk that the board parts may be damaged.

(1) Remove the dust box. (Refer to “9.2. Dust box removal and installation”.)
(2) Remove the front panel. (Refer to “9.3. Front panel removal and installation”.)
(3) Remove the control box tab (1 location), and open the control box to the front.

Ta b

Control box

Summarized wiring

(7) Connect the wireless LAN adapter terminal to the control board (CN34).

Leave excess wiring so that force is not applied to the base of the wireless LAN
adapter terminal.

Wireless LAN
adapter terminal

CN34 connector

Pull out the wiring
on the front side

Control board

Wireless LAN
adapter wiring

Relay connector

CAUTION

• Firmly insert the connector. If the connector is not fully inserted, there is a risk of this
causing a malfunction.

• Do not disconnect the relay connector.

(8) Place the wireless LAN adapter wiring along the other wiring.

This is placed along with
other wiring.

En-8

(9) Fit the electrical equipment lid claws (left and right, 2 places) and replace the electrical

equipment lid.

CAUTION

Do not cut the wiring in the electrical equipment lid and do not squeeze the wiring in.
Damage to the wiring may lead to a short circuit.

(10) Connect the end of the connection cable fully into the terminal block.

(15) Replace the front panel. (Refer to “9.3. Front panel removal and installation”.)
(16) Replace the dust box. (Refer to “9.2. Dust box removal and installation”.)
(17) Replace the wiring cover.
(18) Replace the intake grill. (Refer to “9.1. Intake grill removal and installation”.)

25 mm

Earth (ground) wire

(11) Push the connection cable into the groove on the side of the electrical equipment lid.

(12) Fix the cables with the attached cable clamp with a screw.

Screw

Cable clamp

Viewed from direction

GOOD

A

35 mm

Push into the groove.

Arrange so that the connection cable is on
the left side, and the wireless LAN adapter
wiring on the right, and secure with the
cable clamp.

GOOD

Wireless LAN
adapter wiring

Connection cable

GOOD

PROHIBITED

PROHIBITED

8. FINISHING

(1) Insulate between pipes.

• Insulate suction and discharge pipes separately.

• For rear, right, and bottom piping, overlap the connection pipe heat insulation and
indoor unit pipe heat insulation and bind them with vinyl tape so that there is no gap.

(2) Temporarily fasten the connection cable along the connection pipe with vinyl tape.

(Wrap to about 1/3 the width of the tape from the bottom of the pipe so that water

does not enter.)
(3) Fasten the connection pipe to the outside wall with a saddle, etc.
(4) Fill the gap between the outside wall pipe hole and the pipe with sealer so that rain

water and wind cannot blow in.
(5) Fasten the drain hose to the outside wall, etc.

Outside wall cap*

Saddle*

Sealer putty*

(Outdoors)

Pipe

Connection pipe
(heat insulation)

Bind the pipes together
so that there is no gap.

Pipe

Drain hose

Drain hose insulation is used
when the diameter of gas pipe is
Ø12.70 or more.

Wall

Overlap the insulation

Vinyl tape

Wrap with cloth tape

Cloth tape

*Locally purchased

Indoor unit pipe
(heat insulation)

PROHIBITED

(13) Close the control box.

Please confi rm that the control box is closed completely.

Control box

(14) Attach the Wireless LAN adapter to the wall with 2 screws (Large).

For details, refer to the setting manual of wireless LAN control.

Install the wireless LAN adapter in the
direction as shown in the fi gure.
If the wireless LAN adapter is installed in
a wrong direction, water may get into the

Tapping screws
(Large)

adapter through the wire, causing failure.

GOOD PROHIBITED

Ta b

Check the following:

GOOD

Butt connection pipe (heat
insulation) against the indoor
unit pipe (heat insulation) and
wrap with drain hose insula­tion so that there is no gap.

Drain hose
Saddle

Lifted up Wave End in water

PROHIBITED

Reverse direction On the fl oor

En-9

9. REMOVING AND REPLACING PARTS

9.1. Intake grill removal and installation

Intake grill removal

(1) In the recesses of the lower ends of the intake grill, carefully work on them and pull them

to the front, and open the intake grill wide until it is slightly higher than the horizontal
line.

(2) While gently pressing and expanding the intake grill left and right mounting shaft to the

outside (arrow “a” direction), remove the intake grill in the arrow “b” (front) direction.

Mounting shaft Mounting shaft

a

b

Intake grill

a

b

(2) Push the dust box to the rear and attach it, downwards to the lower side.

(1) Push to the rear of

(3) Close the handle.

Handle

the indoor unit.

(2) Push down to the

lower side to attach.

Intake grill installation

(1) Attach the left and right mounting shaft in the direction of the arrow to the panel top

bearing while supporting the intake grill horizontally. Press this until it clicks so that each
shaft snaps into place.

Intake grill

Mounting shaft

Bearing Bearing

(2) Press and close the intake grille.

Press here

9.2. Dust box removal and installation

Dust box removal

(1) Slide the stopper to the right.

The handle
opens.

The stopper locks when
the handle is lowered.

9.3. Front panel removal and installation

* This description has the intake grill, dust box and wire cover removed.

Front panel removal

Remove the screws (7 places) on the front panel, and remove the front panel by pulling it
to the front.

Front panelScrew

Front panel installation

Fit the front panel, and attach the front panel screws (7 places).

CAUTION

Please take caution when removing or installing the front panel. If the front panel falls,
there is a risk of injury.

10. SETTING THE ORIENTATION OF THE HUMAN SENSOR

Stopper

(2) Pull out the dust box and air fi lter.

Handle

Hold the handle and
pull upward.

Dust box installation

(1) Insert the air fi lter along the indoor unit rails.

Rails (left and right)

Pull out towards you.

(1) Open the intake grille.
(2) Press the human sensor operation part with your fi nger and align the detection direc-

tion. (The detection direction can be changed by approximately 30° to the left and

right.)

Human sensor
operation part

(3) Press and close the intake grille.

[Guide to selection of installation position]

Indoor unit installa­tion position

Direction of human
sensor (detection
direction)

Center of indoor unit
is on the left of the
wall

Right direction Center direction Left direction

Center of indoor unit
is in the center of the
wall

Center of indoor unit
is on the right of the
wall

En-10

The detection range of the human sensor can be checked with the following steps.
(1) If the energy saving function is OFF, press the “SENSOR” button to enable the energy

saving function.

(2) In FAN mode, press the “TEST RUN” button on the remote controller.

The “ECONOMY” indicator fl ashes when the human sensor detects a person.

(3) To fi nish checking the detection range, push the “Start/Stop(

operation.

)” button and stop the

11. TEST RUN

Check items

(1) Is operation of each button on the remote control unit normal?
(2) Does each lamp light normally?
(3) Do air fl ow direction louvers operate normally?
(4) Is the drain normal?
(5) Do not have an abnormal noise and vibration during operation?
 Do not operate the air conditioner in test run for a long time.

[Operation method]

Before starting the test run, wait for 1 minute after connecting the power supply.
By the wireless remote controller
 To start the test run, press the “Start/Stop(

remote controller with a by using the tip of a ballpoint pen or other small object.

By the indoor unit

 To start the test run, keep on pressing the indoor unit button for more than 10 seconds.
 To end test operation, press the remote controller “Start/Stop(

(When the air conditioner is running by pressing the “TEST RUN” button, the
“OPERATION” Lamp and “TIMER” Lamp will simultaneously fl ash slowly.)

)” button, the “TEST RUN” button on the

)” button.

12. REMOTE CONTROLLER INSTALLATION

Check that the indoor unit correctly receives the signal from the remote controller, then
install the remote controller holder.

CAUTION

Do not install the remote controller holder in the following conditions:

• Any places exposed in direct sunlight

• Positions affected by the heat from a stove or heater

12.1. Remote controller holder installation

 Install the remote controller a maximum distance of 7 m from the remote control signal

receiver. After installing the remote controller, check that it operates correctly.

 I

nstall the remote controller holder to a wall, pillar, etc. with the tapping screw.

Remote controller
holder fi xing

Remote controller
holder

Tapping
screw
(small)

Remote controller
mounting

(1) Set

Remote
controller

(2) Down

13. SELECTING THE REMOTE CONTROLLER CUSTOM CODE

When two or more air conditioners are installed in a room and the remote controller is
operating an air conditioner other than the one you wish to set, change the custom code
of the remote controller to operate only the air conditioner you wish to set (4 selections
possible).
When two or more air conditioners are installed in a room, please contact your retailer to
set the individual air conditioner custom codes.

Selecting the Remote Controller Custom Code

Use the following steps to select the custom code of the remote controller. (Note that the
air conditioner cannot receive a signal if the air conditioner has not been set for the match­ing custom code.)

(1) Press the “Start/Stop(

displayed on the remote controller display.

(2) Press the “MODE” button for at least 5 seconds to dis-

play the current custom code (initially set to A).

(3) Press the “TEMP.” (

tom code between A→B→C→D.
Match the code on the display to the air conditioner
custom code.

(4) Press the “MODE” button again to return to the clock

display. The custom code will be changed.

• If no buttons are pressed within 30 seconds after the custom code is displayed, the
system returns to the original clock display. In this case, start again from step 1.

• The air conditioner custom code is set to A prior to shipment.

)” button until only the clock is

/ ) buttons to change the cus-

14. FUNCTION SETTING

Perform the “FUNCTION SETTING” according to the installation conditions using the
remote controller.

CAUTION

• Confi rm whether the wiring work for outdoor unit has been fi nished.

• Confi rm that the cover for the electrical enclosure on the outdoor unit is in place.

• 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 to
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.

Selecting the Function Number and Setting Value

(1) While pressing the “POWERFUL” button and “TEMP.” ( ) button simultaneously,

press the “RESET” button to enter the function setting mode.

(2) Press the “10°C HEAT” button.

Function Number

Setting Value

(3) Press the “TEMP.” ( / ) buttons to select the function number. (Press the “10°C

HEAT” button to switch between the left and right digits.)

(4) Press the “POWERFUL” button to proceed to setting value. (Press the “POWERFUL”

button again to return to the function number selection.)

(5) Press the “TEMP.” (

HEAT” button to switch between the left and right digits.)

(6) Press the “MODE” button once. Please confi rm the beeping sound.

(7) Next, please press “Start/Stop(

confi rm the beeping sound.

(8) Press the “RESET” button to cancel the function setting mode.

(9) After completing the FUNCTION SETTING, be sure to disconnect the power supply

and then reconnect it.

After disconnecting the power supply, wait 30 seconds or more before reconnecting it.
The function setting will not become active unless the power supply is disconnected
and then reconnected.

Filter clean operation interval

Select appropriate intervals for automatically cleaning the air fi lter according to environmental
conditions and the conditions of use.

Setting Description

♦ Standard (40 hours)

Long interval (64 hours) 01

Short interval (24 hours) 02

Filter cleaning disabled * 03

* You can use the “FILTER CLEAN” button to clean the fi lter manually.

Left/right swing operation range

Select the operation range of the left/right swing according to the installation condition.

Setting Description

♦ Standard

Left side

Right side

/ ) buttons to select the setting value. (Press the “10°C

)” button once to fi x the function setting. Please

CAUTION

(♦... Factory setting)

LeftRight

Slightly right



Left

Slightly left



Function

Number

10

Function

Number

24

Right

Setting Value

00

(♦... Factory setting)

Setting Value

00

01

02

En-11

Room temperature control for indoor unit sensor

Depending on the installed environment, correction of the room temperature sensor may
be required. Select the appropriate control setting according to the installed environment.
The temperature correction values show the difference from the Standard setting “00”
(manufacturer’s recommended value).

Setting Description

♦ Standard setting

No correction 0.0 °C 01

-0.5 °C (-1 °F)

-1.0 °C (-2 °F) 03

-1.5 °C (-3 °F) 04

-2.0 °C (-4 °F) 05

-2.5 °C (-5 °F) 06

-3.0 °C (-6 °F) 07

-3.5 °C (-7 °F) 08

-4.0 °C (-8 °F) 09
+0.5 °C (+1 °F)
+1.0 °C (+2 °F) 11
+1.5 °C (+3 °F) 12
+2.0 °C (+4 °F) 13
+2.5 °C (+5 °F) 14
+3.0 °C (+6 °F) 15
+3.5 °C (+7 °F) 16
+4.0 °C (+8 °F) 17

More cooling
Less heating

Less cooling

More heating

Function

Number

30

(For cooling)31(For heating)

(♦... Factory setting)

Setting Value

00

02

10

Auto restart

Enable or disable automatic restart after a power interruption.

Setting Description

♦ Enable

Disable 01

* Auto restart is an emergency function such as for power outage etc. Do not attempt to

use this function in normal operation. Be sure to operate the unit by remote controller or
external device.

Remote controller custom code

(Only for wireless remote controller)
The indoor unit custom code can be changed. Select the appropriate custom code.

Setting Description

♦ A

Indoor unit fan control for energy saving for cooling

Enables or disables the power-saving function by controlling the indoor unit fan rotation when
the outdoor unit is stopped during cooling operation.

Setting Description

♦ Remote controller 02

00: When the outdoor unit is stopped, the indoor unit fan operates continuously following

the setting on the remote controller.

01: When the outdoor unit is stopped, the indoor unit fan operates intermittently at a very

low speed.

02: Enable or disable this function by remote controller setting.
* As the factory setting, this setting is initially activated.

Dual fan air fl ow (in COOL, DRY, FAN modes)

Switch the Dual fan vertical air fl ow in COOL, DRY and FAN modes. (Set this when the Dual
fan air fl ow is too strong or weak.)

Setting Description

♦ Standard

B01
C02
D03

Disable

Enable 01

Down 01

Up 02

Function

Number

Function

Number

Function

Number

Function

Number

40

44

49

92

(♦... Factory setting)

Setting Value

00

(♦... Factory setting)

Setting Value

00

(♦... Factory setting)

Setting Value

00

(♦... Factory setting)

Setting Value

00

Dual fan vertical air fl ow angle (in COOL, DRY, FAN modes)

Switch the Dual fan vertical air fl ow angle in COOL, DRY and FAN modes. (Set this when
the Dual fan air fl ow hits furniture or does not reach the intended area.)

Setting Description

♦ Standard (70°)

0° 01
30° 02
40° 03
45° 04
50° 05
60° 06

Function

Number

(♦... Factory setting)

Setting Value

00

93

Maintenance indicator switchover

Display/hide the indicator that shows when to clean the dust box or the plasma air clean unit.

Setting Description

♦ Enable

Setting record

Record any changes to the settings in the following table.

Filter clean operation interval
Left and right swing movable range
Room temperature control for indoor

unit sensor
Auto restart
Remote controller custom code
Indoor unit fan control for energy saving for cooling
Dual fan air fl ow
Dual fan vertical air fl ow angle
Maintenance indicator switchover

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

Disable 01

Setting Description Setting Value

Cooling
Heating

Function

Number

97

(♦... Factory setting)

Setting Value

00

15. 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 control unit operations.
(2) Air fi lter removal and cleaning, and how to use the air louvers.
(3) Give the operating manual to the customer.

16. ERROR CODES

If you use a wireless remote controller, the lamp on the photo detector unit will output error
codes by way of blinking patterns. If you use a wired remote controller, error codes will ap­pear on the remote control display. See the lamp blinking patterns and error codes in the
table. An error display is displayed only during operation.

Error display

OPERATION

lamp

(green)

●

●

●

●

●

●

●

●

●

TIMER

ECONOMY

lamp

(orange)

(1)

(1)

(1)

(1)

(1)

(2)

(2)

(2)

(2)

●

●

●

●

●

●

●

●

●

lamp

(green)

(1)

(2)

(5)

(6)

(8)

(1)

(2)

(3)

(4)

Error code Description

◊

◊

◊

◊

◊

◊

◊

◊

◊

Serial communication error

• Wired remote controller
communication error

• Server room control
communication error

Check run unfinished

Peripheral unit transmission PCB
connection error

External communication error

Unit number or Refrigerant circuit
address setting error
[Simultaneous Multi]

Indoor unit capacity error

Combination error

• Connection unit number error
(indoor slave unit)
[Simultaneous Multi]

• Connection unit number error
(indoor unit or branch unit)
[Flexible Multi]

En-12

(2)

●

(2)

●

(3)

●

(3)

●

(4)

●

(4)

●

(5)

●

(5)

●

(5)

●

(5)

●

(5)

●

(5)

●

(5)

●

(5)

●

(5)

●

(6)

●

(6)

●

(6)

●

(6)

●

(6)

●

(7)

●

(7)

●

(7)

●

(7)

●

(7)

●

(7)

●

(7)

●

(8)

●

(8)

●

(8)

●

(8)

●

(9)

●

(9)

●

(9)

●

(9)

●

(10)

●

(6)

●

(7)

●

(2)

●

(5)

●

(1)

●

(2)

●

(1)

●

(3)

●

(4)

●

(5)

●

(7)

●

(8)

●

(9)

●

(10)

●

(15)

●

(2)

●

(3)

●

(4)

●

(5)

●

(10)

●

(1)

●

(2)

●

(3)

●

(4)

●

(5)

●

(6)

●

(7)

●

(2)

●

(3)

●

(4)

●

(6)

●

(4)

●

(5)

●

(7)

●

(9)

●

(1)

●

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

◊

Address setting error in wired
remote controller system

Master unit, slave unit set-up error
[Simultaneous Multi]

Indoor unit PCB model
information error

Manual auto switch error

Room temp. sensor error

Indoor unit Heat Ex. Middle temp.
sensor error

Indoor unit fan motor 1 error
(Main fan)

Drain pump error

Electric air cleaner reverse VDD
error

Filter set error

Damper error

Intake grille error

Indoor unit fan motor 2 error
(Left side fan)

Indoor unit fan motor 3 error
(Right side fan)

Indoor unit error

Outdoor unit main PCB model
information error or
communication error

Inverter error

Active filter error, PFC circuit error

Trip terminal L error

Display PCB microcomputers
communication error

Discharge temp. sensor error

Compressor temp. sensor error

Outdoor unit Heat Ex. liquid temp.
sensor error

Outdoor temp. sensor error

Suction Gas temp. sensor error

• 2-way valve temp. sensor error

• 3-way valve temp. sensor error
Heat sink temp. sensor error

• Sub-cool Heat Ex. gas inlet
temp. sensor error

• Sub-cool Heat Ex. gas outlet
temp. sensor error

Liquid pipe temp. sensor error

Current sensor error

• Discharge pressure sensor error

• Suction pressure sensor error

• High pressure switch error

Trip detection

Compressor rotor position
detection error

Outdoor unit fan motor error

4-way valve error

Discharge temp. error

(10)

●

(10)

●

(10)

●

(13)

●

Display mode

(3)

●

(4)

●

(5)

●

(2)

●

: 0.5s ON / 0.5s OFF

●

◊

: 0.1s ON / 0.1s OFF

( ) : Number of flashing

◊

◊

◊

◊

Compressor temp. error

High pressure error

Low pressure error

Branch boxes error
[Flexible Multi]

En-13