Fujitsu ASU30RLE Installation Manual

AIR CONDITIONER
INDOOR UNIT (Wall Mounted Type)

For authorized service personnel only.

• Installation must be performed in accordance with the requirement of NEC and CEC by

authorized personnel only.

1. SAFETY PRECAUTIONS

1.1. IMPORTANT! Please read before starting

This air conditioning system meets strict safety and operating standards.
As the installer or service person, it is an important part of your job to install or service the

system so it operates safely and efciently.

For safe installation and trouble-free operation, you must:

• Carefully read this instruction booklet before beginning.

• Follow each installation or repair step exactly as shown.

• Observe all local, state, and national electrical codes.

• Pay close attention to all warning and caution notices given in this manual.

WARNING

CAUTION

• Hazard alerting symbols

If Necessary, Get Help

These instructions are all you need for most installation sites and maintenance conditions.

If you require help for a special problem, contact our sales/service outlet or your certied

dealer for additional instructions.

In Case of Improper Installation

The manufacturer shall in no way be responsible for improper installation or maintenance
service, including failure to follow the instructions in this document.

1.2. Special precautions

When Wiring

ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A
QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYS­TEM.

• Do not supply power to the unit until all wiring and tubing are completed or reconnected
and checked.

• Highly dangerous electrical voltages are used in this system. Carefully refer to the wir­ing diagram and these instructions when wiring. Improper connections and inadequate

earthing (grounding) can cause accidental injury or death.

• Earth (Ground) the unit following local electrical codes.

• Connect all wiring tightly. Loose wiring may cause overheating at connection points and
a possible re hazard.

When Transporting

Be careful when picking up and moving the indoor and outdoor units. Get a partner to
help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin
aluminum ns on the air conditioner can cut your ngers.

When Installing...

...In a Ceiling or Wall

Make sure the ceiling/wall is strong enough to hold the unit’s weight. It may be necessary
to construct a strong wood or metal frame to provide added support.

This symbol refers to a hazard or unsafe practice which can

result in severe personal injury or death.

This symbol refers to a hazard or unsafe practice which can

result in personal injury and the potential for product or prop­erty damage.

Electrical

Safety/alert

INSTALLATION MANUAL

PART No. 9387082098-02

Contents

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

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

3. GENERAL SPECIFICATIONS ........................................................... 2

4. SELECTING THE INSTALLATION LOCATION ................................. 3

5. INSTALLATION WORK .....................................................................3

6. ELECTRICAL WIRING ..........................................................................5

7. FINISHING ........................................................................................ 6

8. FRONT PANEL REMOVAL AND INSTALLATION .............................7

9. REMOTE CONTROLLER INSTALLATION ........................................ 7

10. OPTIONAL KIT INSTALLATION ........................................................ 8

11. INSTALLATION WORK (option) ........................................................ 9

12. GROUP CONTROL ......................................................................... 10

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

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

15. CHECK LIST .................................................................................... 13

16. TEST RUN ....................................................................................... 13

17. CUSTOMER GUIDANCE ................................................................ 13

18. ERROR CODES .............................................................................. 13

...In a Room

Properly insulate any tubing run inside a room to prevent “sweating” that can cause drip­ping and water damage to walls and oors.

...In an Area with High Winds

Securely anchor the outdoor unit down with bolts and a metal frame.
Provide a suitable air bafe.

...In a Snowy Area (for Heat Pump-type Systems)

Install the outdoor unit on a raised platform that is higher than drifting snow.

When Connecting Refrigerant Tubing

• Keep all tubing runs as short as possible.

• Use the are method for connecting tubing.

• Apply refrigerant lubricant to the matching surfaces of the are and union tubes before
connecting them, then tighten the nut with a torque wrench for a leak-free connection.

• Check carefully for leaks before opening the refrigerant valves.

When Servicing

• Turn the power OFF at the main circuit breaker panel before opening the unit to check
or repair electrical parts and wiring.

• Keep your ngers and clothing away from any moving parts.

• Clean up the site after you nish, remembering to check that no metal scraps or bits of
wiring have been left inside the unit being serviced.

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

WARNING

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.

If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant
comes in contact with a ame, it produces a toxic gas.

CAUTION

Do not attempt to install the air conditioner or a part of the air conditioner by yourself.

This unit must be installed by qualied personnel with a capacity certicate for handling
refrigerant uids. Refer to regulation and laws in use on installation place.

This unit is part of a set constituting an air conditioner. It must not be installed alone or

with a device non-authorized 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 1/8 in. (3 mm) for this unit.

The unit must be correctly earthed (grounded) and the supply line must be equipped

with a differential breaker in order to protect the persons.

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

atmosphere.

When moving, consult authorized service personnel for disconnection and installation
of the unit.

Do not place any other electrical products or household belongings under indoor unit or
outdoor unit.

Dripping condensation from the unit might get them wet, and may cause damage or

malfunction of your property.

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2. ABOUT THIS PRODUCT

2.1. Precautions for using R410A refrigerant

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

Since the working pressure is 1.6 times higher than that of conventional refrigerant

(R22) models, some of the piping and installation and service tools are special. (See

the following table.)
Especially, when replacing a conventional refrigerant (R22) model with a new refrigerant
R410A model, always replace the conventional piping and are nuts with the R410A piping
and are nuts.

Models that use refrigerant R410A have a different charging port thread diameter to pre-

vent erroneous charging with conventional refrigerant (R22) and for safety. Therefore,
check beforehand. [The charging port thread diameter for R410A is 1/2-20 UNF.]

Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with
refrigerant (R22) models. Also, when storing the piping ,securely seal the opening by

pinching, taping, etc.

When charging the refrigerant, take into account the slight change in the composition of
the gas and liquid phases. And always charge from the liquid phase where refrigerant

composition is stable.

2.2. Special tools for R410A

Tool name Contents of change

Pressure is high and cannot be measured with a conven-

Gauge manifold

Charge hose

Vacuum pump

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

Copper pipes

It is necessary to use seamless copper pipes and it is desirable that the amount of residual
oil is less than 0.004 oz/100 ft. (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 R410A incurs pressure higher than when using R22, it is nec-

essary to choose adequate materials.

Do not use the existing (for R22) piping and are nuts.
If the existing materials are used, the pressure inside the refrigerant cycle will rise and

cause failure, injury, etc. (Use the special R410A materials.)

When installing and relocating the air conditioner, do not mix gases other than the
specied refrigerant (R410A) to enter the refrigerant cycle.
If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to

an abnormally high value and cause failure, injury, etc.

2.3. For authorized service personnel only.

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

Connect the indoor unit and outdoor unit or branch box with the air conditioner piping

and cables available from your local distributor. This installation manual describes the
correct connections using the installation set available from your local distributor.

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

This installation manual describes how to install the indoor unit only.
To install the outdoor unit or branch box, refer to the installation manual included with
the outdoor unit or branch box.

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

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

tional (R22) gauge. To prevent erroneous mixing of other

refrigerants, the diameter of each port has been changed.

It is recommended the gauge with seals -30 inHg to 768 psi

(-0.1 to 5.3 MPa) for high pressure.

-30 inHg to 551 psi (-0.1 to 3.8 MPa) for low pressure.

To increase pressure resistance, the hose material and base

size were changed.

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

WARNING

WARNING

CAUTION

2.4. Accessories

The following installation accessories are supplied. Use t hem as re quired.

Name and Shape

Operating manual

Installation manual
(This manual)

Wall hook bracket

Cloth tape

Remote controller

Battery

Remote controller holder

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

Q’ty

1

1

1

1

1

2

1

Name and Shape

Tapping screw

(Large)

Tapping screw

(Small)

Air cleaning filter

Filter holders

Seal A

Cable clamper and screw

For the installation of the wired

remote controller (Option)

Q’ty

5

2

2

2

1

1

.

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

1 Saddle 1 set

2.5. 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

2.6. Optional parts

Refer to each installation manual for the method of installing optional parts.

Parts name Model No. Application

Wired Remote Controller UTY-RVNUM For air conditioner operation
Wired Remote Controller UTY-RNRUZ1 For air conditioner operation
Simple Remote Controller UTY-RSNUM For air conditioner operation

External connect kit UTY-XWZX For control input/output port
External input and output PCB*
PCB kit UTY-GXXB For the installation of UTY-XCSXZ1

* Optional PCB kit (UTY-GXXB) is necessary for the installation.

UTY-XCSXZ1 For connecting external devices

3. GENERAL SPECIFICATIONS

This INSTALLATION MANUAL brie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 for the outdoor unit for description of allowable pipe length

and height difference.

Liquid pipe Gas pipe

3/8 in. (9.52 mm) 5/8 in. (15.88 mm)

Diameter

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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 248 °F (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 3/4 in. (15 mm) or
thicker and if the expected humidity exceeds 80%, use heat insulation that is 13/16 in.
(20 mm) or thicker.
If heat insulation is used that is not as thick as specied, condensation may form on
the surface of the insulation. In addition, use heat insulation with heat conductivity of

0.045 W/(m•K) or less (at [68 °F (20 °C)]).

3.2. Electrical requirement

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

WARNING

Refer to local codes for acceptable cable type.

5. INSTALLATION WORK

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
the sensor’s detection area.

Detection range of the

Vertical angle 90° (Side view) Horizontal angle 100° (Top view)

22ft (7m)

human

sensor is as follows.

90°

5.1. Installation dimensions

3 (80) or over*

2-3/8 (60) or over**

human

sensor. Also keep heating units outside

22ft

(7m)

50° 50°

Wall hook bracket

4. SELECTING THE INSTALLATION LOCATION

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.
Install the unit a dedicated electrical branch circuit.

(3)
(4)

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

(5)

Install the unit where connection to the outdoor unit or branch box 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 [5.1. Installation

dimensions]. Also install the unit where the lter can be removed.

Correct initial installation location is important because it is difcult to move unit after it is

installed.

WARNING

Install the air conditioner in a location which can withstand a load of at least 3 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.

Withstandable weight (Unit weight x 3*)

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 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 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 bers or
ammable dust, or volatile inammables such as paint thinner or gasoline.

• If gas leaks and settles around the unit, it can cause a 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, grow-

ing 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 warning of combustible gas leakage.

• Do not install the unit near a source of heat, steam, or ammable gas.

• Install the unit where drainage does not cause any trouble.

• Install the indoor unit, outdoor unit, branch box, power supply cable, transmission
cable, and remote controller cable at least 40 in. (1m) 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 40 in. (1m) 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 oors more than 70 in.
(1.8 m).

120 Lbs (54kg)

*In accordance with UL standards.

CAUTION

5-1/8 (130) or

over**

59 (1.5 m)
or over

Unit: in. (mm)

Remote
controller

70 (1.8 m) or over

Remote
controller
holder

Tapping screw
(small)

(Wall cap)

* The distance between the wall hook

bracket and the ceiling should be

3 in (80 mm) or more.

** The side next to the sidewall must

follow the size indicated in figure.

5.2. Indoor unit piping direction

The piping can be connected in the 6 directions indicated in the following.
When the piping is connected to direction (B) , (C) , (D) or (E) ,

on the side of the front cover with a hacksaw.

(Rear)

(B) Right

outlet

(C) Bottom

outlet

(A) Rear

outlet

(F) Centre

outlet

cut along the piping groove

(E) Left

outlet

(G) Left rear

outlet

(D) Left bottom

outlet

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

(1) Cut a 80 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.

(4)

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

freely.

10 mm
or more

Fasten with

vinyl tape

Wall hook bracket

80 mm hole

Centring marks

80 mm hole

5 to 10 mm low

10 mm
or more

LowerLower

Wall pipe*

Wall cap*

(Inside) (Outside)

Wall

*Locally purchased

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.

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

(2)

•

Fasten the wall hook bracket to the wall with 5 or more screws through the holes near the
outer edge of the bracket.

•

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

Removal method of drain hose

Remove the screw at the left of drain

hose and pull out drain hose.

Drain xture

Drain hose

Installation method of drain hose

Vertic al ly insert the drai n ho se toward the
inside, so that the drain xture (white) can ac­curately align with the screw hole around the
drain cock.

After inserting and before replacing, please

reinstall and x the removed screws.

Screw hole

Drain cock

Drain xture

Screw

Wall hook bracket

Tapping screw (large)

(Accessory, 8 pcs)

CAUTION

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

5.5.

Forming the drain hose and pipe

CAUTION

• Insert drain hose and drain cap securely. Drain should slope down to avoid water leakage.
When inserting, be sure not to attach any material besides water. If any other material is

•
attached, it will cause deterioration and water leakage.

• After removing drain hose, be sure not to forget mounting drain cap.

• Be sure to x the drain hose with tape to the bottom of piping.

• Prevent drain water freezing under low temperature environment.
When installing indoor unit’s drain hose outdoors, necessary measure for frost
protection should be taken to prevent drain water freezing.
Under low temperature environment (when outdoor temperature under 32 °F (0 °C)),
after cooling operation is executed, water in the drain hose could be frozen. Once drain
water is frozen, the drain hose will be blocked and water leakage may result 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.

Screw

• Please hold around the joint of the drain hose during working.
As the screw is inside, be sure to use screwdriver treated with magnet.

•

•

For left piping and left rear piping, align the marks on the wall hook bracket and shape the

connection pipe.

• Bend the connection piping at a bend radius of 4 in. (100 mm) or more and install no
more than 1-6/16 in. (35 mm) from the wall.
After passing the indoor piping and drain hose through the wall hole, hang the indoor unit on

•
the hooks at the top and bottom of the wall hook bracket.

Drain hose

Alignment marks

Wall hook
bracket

Connection
piping

Small piping

Large piping

[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

Unit: in. (mm)

(Spacer)

Wall hook bracket

Top hooks

Right piping

Bind with vinyl tape

Pipe (top)
Rear piping

Bottom piping

Indoor unit drain hose
(bottom)

[For Left rear piping, Left piping]

Interchange the drain cap and the drain hose.

For left outlet piping, cut
off the piping outlet cutting

groove with a hacksaw.

Remove the drain cap by pull-

Indoor unit
drain hose

ing at the projection at the end

of the cap with pliers, etc.

Drain cap

Installation method of Drain cap

Use a hexagonal wrench 3/16 in. (4 mm) at opposite side

to insert the drain cap, till the drain cap contacts the tip of

drain cock.

No gap

Hexagonal
wrench

Drain

cock

Drain cap

Indoor
unit

(Fitting)

Bottom hooks

Wall hook
bracket

After hooking the indoor unit to the top hook, hook the ttings of the indoor unit to the 2
bottom hooks while lowering the unit and pushing it against the wall.

5.6. Flare connection (Pipe connection)

CAUTION

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

5.6.1. Flaring

Use special pipe cutter and are tool exclusive for R410A.
(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 are nut (always use the are nut attached to the indoor unit(s) and outdoor

unit respectively) onto the pipe and perform the are processing with a are tool. Use
the special R410A are tool, or the conventional are tool. Leakage of refrigerant may
result if other 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

Die

A

Pipe

and is not cracked or scratched.

L

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Pipe outside diameter

Wid

th acr

oss

flats

[in. (mm)]

1/4 (6.35)

3/8 (9.52)
1/2 (12.70)
5/8 (15.88)
3/4 (19.05)

When using conventional are tools to are R410A pipes, the dimension A should be
approximately 0.020 in. (0.5 mm) more than indicated in the table (for aring with R410A
flare tools) to achieve the specified flaring. Use a thickness gauge to measure the

dimension A.

Width across

Dimension A [in. (mm)]

Flare tool for R410A,

flats

clutch type

0 to 0.020

(0 to 0.5)

Pipe outside

diameter [in. (mm)]

1/4 (6.35)

3/8 (9.52)
1/2 (12.70)
5/8 (15.88)

3/4 (19.05)

Dimension B [in. (mm)]

3/8 (9.1)
1/2 (13.2)
5/8 (16.6)
3/4 (19.7)

15/16 (24.0)

Width across flats of

Flare nut [in. (mm)]

11/16 (17)

7/8 (22)

1 (26)

1-1/8 (29)

1-7/16 (36)

5.6.2. Bending pipes

• 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 difcult

to bend or stretch them anymore.

• 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.

5.6.3. Pipe connection

CAUTION

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

• Do not remove the 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 are nut correctly.

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

6. ELECTRICAL WIRING

Cable Cable size Remarks

Connection cable 14AWG 3 cable+Earth (Ground), 1φ 208/230 V

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

6.1.

Wiring system diagram

WARNING

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

• Every wire must be connected rmly.

•

No wire should be allowed to touch refrigerant tubing, the compressor or any moving part.

• Loose wiring may cause the terminal to overheat or result in unit malfunction. A re
hazard may also exist. Therefore, be sure all wiring is tightly connected.

• Connect wires to the matching numbers of terminals.

INDOOR UNIT SIDE

INDOOR UNIT

TERMINAL

DISCONNECT
SWITCH
(Locally purchased)

6.2.

Indoor unit wiring

1. Remove the wire cover. (Remove 1 screw.)

2. Remove the cable clamp.

3. Ring terminals connect to the connection cable.

4. Connect the ring terminals fully into the terminal block.

5. Fasten the connection cable with a cable clamp.

6.

Insert the wire cover tab into the square hole of the indoor unit and fasten with a screw.

Power line

Control line

Earth (ground)
line

OUTDOOR UNIT

Connect it to

the specied

terminal.

CAUTION

• 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 two wrenches.

Holding wrench

Torque wrench

Indoor unit pipe
(Body side)

Flare nut

Connection pipe

Flare nut [in. (mm)] Tightening torque [lb·ft (N·m)]

1/4 (6.35) dia. 11.8 to 13.3 (16 to 18)

3/8 (9.52) dia. 23.6 to 31.0 (32 to 42)
1/2 (12.70) dia. 36.1 to 45.0 (49 to 61)
5/8 (15.88) dia. 46.5 to 55.3 (63 to 75)
3/4 (19.05) dia. 66.4 to 81.1 (90 to 110)

Screw

Screw

2.5 in. (65 mm)

Wire cover

Cable clamp

1 2 3

1 in. 25 mm

Hook

Cable clamp

1 2 3

Earth (ground) wire

En-5

Terminal block for the optional remote controller

Earth
(Ground)

Indoor unit terminal block

screw

Disconnect switch

Outdoor unit or

Branch box

Please connect
it to the specified
terminal.

• To connect the indoor unit wires to the terminal correctly, refer to the gure for proper

length.

Unit: in. (mm)

Earth (Ground) wire

14AWG

6.4. How to connect wiring to the terminals

Caution when wiring cable

When stripping off the insulation of a lead wire, always use a special tool such as a wire
stripper. If there is no special tool available, carefully strip the insulation with a knife etc.
(1) Use ring terminals with insulating sleeves as shown in the gure below to connect to

the terminal block.

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

wires do not come loose.

Strip : 3/8 in. (10 mm)

(3) Use the specied wires, connect them securely, and fasten them so that there is no

stress placed on the terminals.

(4) Use an appropriate screwdriver to tighten the terminal screws. Do not use a screw-

driver that is too small, otherwise, the screw heads may be damaged and prevent the
screws from being properly tightened.

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

Screw with special washer

Wire

Ring terminal

Ring terminal

Sleeve

Screw with special washer

Ring terminal

9-7/16

9-1/16

(240)

(230)

Conduit holder

Conduit connector

6.3. How to the install the indoor unit wire harness

(1) Remove the screws, then remove the conduit holder.
(2) Fasten the indoor unit wire harness to the conduit holder using the lock nut.
IMPORTANT: Refer to [6.1. Wiring system diagram] about the length of indoor unit wire

harness.

(3) Use the screws to install the conduit holder provide with the indoor unit.
(4) Remove the screws, then remove the cable clamper.
(5) Connect indoor unit wire harness to the terminal.
Refer to the wiring diagram
(6) Use the screws to install the cable clamper.

Lock nut

Conduit holder

Screw

Conduit connector

Terminal blocks

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

Wire

Tightening torque [lbf·in (N·m)]

M4 screw 11 to 16 (1.2 to 1.8)

CAUTION

• Attach the cable clamp rmly by holding the connection cable, and make sure that the
clamp is xed securely.

Incomplete attachment of the cable clamp might cause a malfunction of the open
panel.

• Match the terminal block numbers and connection cable colors with those of the

outdoor unit.

Erroneous wiring may cause burning of the electric parts.

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

• Always fasten the outside covering of the connection cable with the cable clamp.

(If the insulator is chafed, electric discharge may occur.)

• Always connect the ground wire.

• Do not use the earth screw of the indoor unit for the connection other than a specied

outdoor unit.

7. 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.

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

• For left and left rear piping, wrap the area which accommodates the rear piping
housing section with cloth tape.

• For left and left rear piping, bind the connection cable to the top of the pipe with

vinyl tape.

• For left and left rear piping, bundle the piping and drain hose together by wrapping
them with cloth tape over the range within which they t into the rear piping

housing section.

(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*

En-6

Pipe

Wall

(Outdoors)

*Locally purchased

Overlap the insulation

Connection pipe
(heat insulation)

Bind the pipes together
so that there is no gap.

Vinyl tape

Indoor unit pipe
(heat insulation)

Pipe

Wrap with cloth tape

Drain hose

Cloth tape

Left piping For connection from the left rear

Connection cable

Pipe

Drain hose

Check the following:

GOOD

Seal A is used when the diam­eter of gas pipe is Ø12.70 or
more.

Butt connection pipe (heat
insulation) against the indoor
unit pipe (heat insulation) and

wrap with Seal A so that there

is no gap.

Drain hose

Wall pipe Connection cable

Drain hose

Connection pipe

PROHIBITED

Saddle

Lifted up Wave End in water

8. FRONT PANEL REMOVAL AND INSTALLATION

Intake grill removal Intake grill installation

b

8.1. Front panel removal

(1) Remove intake grille (Reference the intake grille removal.)

(2) Remove 4 caps.

(3) Remove wire cover.
(4) Remove 10 screws.

Open the intake

grille. While gently
pressing the left
and right mounting

a

shafts of the intake
grille outward “a”,
remove the intake

grille in direction of

the arrow “b”.

Screws (Wire cover)

While holding the
grille horizontal, set
the left and right
mounting shafts into

the pillow blocks at

c

the top of the panel

“c”.

To latch each shaft
properly, insert the
shaft until it snaps.

Press 4 places on

the intake grille to

close it completely.

8.2. Front panel installation

(1) First, t the lower part of the front panel, and insert top and bottom hooks. (3 top

sides, 5 middles)

Top hooks

Top holes (3 position)

Indoor unit

(2) Attach the 10 screws.
(3) Attach the wire cover.

(4) Attach the 4 caps.

(5) Attach the intake grille.

Middle hooks

(5 position)

Front panel

(3 position)

Middle hooks

(5 position)

CAUTION

Install the Front panel and Intake grille securely. If installation is imperfect, the Front

panel or Intake grille may fall off and cause injury.

9. REMOTE CONTROLLER INSTALLATION

• Check that the indoor unit correctly receives the signal from the remote controller, then

install the remote controller holder.

CAUTION

• Select the remote controller holder selection site by paying careful attention to the
following:

Avoid places in direct sunlight.

Select a place that will not be affected by the heat from a stove, etc.

9.1. Remote controller holder installation

Install the remote controller a maximum distance of 22 ft. (7 m) from the remote control

•

receiver. However, when 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 xing

Remote
controller holder

Tapping screw

(small)

remote controller
mounting

Set

1

Push

2

Remote
controller

Wire cover

Screws (10 position)

Caps (4 position)

NOTE: When replacing the front panel, do not scratch or damage the louver.
(5)

The front panel is pulled to the front, raising the upper surface, and a front panel is removed.

Front panel

En-7

10. OPTIONAL KIT INSTALLATION

This air conditioner can be connected with the following optional kits. To install these op­tional kits, the optional PCB kit is necessary.

• External input and output PCB.

Option type Connector No.

UTY-XCSXZ1 (External input and output PCB) CN6

CAUTION

• Before installing, be sure to disconnect all power supply.

• Do not touch the heat exchanger.

• When installing or removing parts of the air conditioner, be sure that the wire is not

caught by any parts or pulled hard. It may result in damage or malfunction of the air
conditioner.

10.1.

External input and output

10.1.1. External input

• Indoor unit functions such as Operation/Stop or Forced stop can be done by using

indoor unit terminals.

• “Operation/Stop” mode or “Forced stop” mode can be selected with function setting of

indoor unit.

•

A twisted pair cable (22 AWG) should be used. Maximum length of cable is 150 m (492 ft.).

• Use an external input and output cable with appropriate external dimension, depending

on the number of cables to be installed.

• The wire connection should be separate from the power cable line.

● Dry contact terminal

When a power supply is unnecessary at the input device you want to connect, use the Dry

contact terminal.

*1

PCB

Terminal

(External in)

● When displaying “Operation/Stop”

Resistor

LED

Connected device

PCB

CN47

Operation behavior

*If function setting “60” is set to “00”
refer to “14 FUNCTION SETTING”

10.1.3. Connection methods

Wire modication

• Remove insulation from wire attached to wire kit connector.

• Remove insulation from locally purchased cable. Use crimp type insulated butt
connector to join eld cable and wire kit wire.

• Connect the wire with connecting wire with solder.

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

Option parts

Locally purchased

Solder and insulate the connected parts.

• Connecting wires to the terminals.

Use ring terminals with insulating sleeves to connect to the terminal block.

• Connection terminals and wiring arrangement

In following gure, all the possible connections are done for description.
In actual installation, connections will differ according to each installation requirements.

External output wire

Connected device

*1: The switch can be used on the following condition: DC 12 V to 24 V, 1 mA to 15 mA.

Operation behavior

● Input signal type

ON

Edge

OFF

● When function setting is “Operation/Stop” mode 1.

Input signal Command

OFF → ON Operation

ON → OFF Stop

● When function setting is “Forced stop” mode.

Input signal Command

OFF → ON Forced stop

ON → OFF Normal

* When the forced stop is triggered, indoor unit stops and Operation/Stop operation by a

remote controller is restricted.

● When function setting is “Operation/Stop” mode 2.

Input signal Command

OFF → ON Operation

ON → OFF Stop (R.C. disabled)

10.2.

Wired remote controller

DIP switch

2-wire type

White

Red

Remote
controller

Remote controller

Connecting the

Optional parts

NOTE: When this remote controller is

connected, wireless remote controller

cannot be used.

cable

“2 WIRE”

Print circuit board

Remote controller

Factory setting

(PCB)

3-wire type

Black

White

Red

Set to “3 WIRE”

Remote
controller
cable

10.1.2. External output

• A twisted pair cable (22AWG) should be used. Maximum length of cable is 25 m (82 ft.).

• Use an external input and output cable with appropriate external dimension, depending

on the number of cables to be installed.

• Output voltage: Hi DC12V±2V, Lo 0V.

• Permissible current: 50mA

Output select

● When interlocking with external device

Connected

device

Relay (locally purchased)

PCB

CN47

or

En-8

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

11. INSTALLATION WORK (option)

11.1.

Front panel, control box cover removal

(1) Front panel removal Refer to “8.1. Front panel removal”
(2) Remove 2 screws, then remove the control box cover.

11.3.

Screw

Screw

Connecting the remote controller cable (communication cable)

Control box

cover

11.2.

Connecting the external cable

(1) Install the cable as shown in the following photographs.
Be sure to place the wiring under the tabs.

(1) Attach the remote controller cable to the terminal block.
Position the wires so that the colors match.

For details, refer to the installation manual of the remote controller.

(2) Install the cable as shown in the following photographs. Be sure to place the wiring under the tabs.
(3) Fix the cable with the cable clamper and screw (M4x14, accessory).

Tabs

CAUTION

Do not connect the cable to the terminal for power supply.
When connecting the wired remote controller with the indoor unit, please use the connecting cable supplied with the wired

remote controller.

Make sure to insulate the connecting parts when extending the cable.

[Server room control]
For server room control, connect the communication cable to the terminal block following the same procedure as the remote controller cable. For details,

refer to the service instruction for Server room control.
Note: Wire colors may not match. Match the numbers on the terminal block of each indoor unit.

Red

White

(Front view)

Tab

Black

(Right view)

Cable clamper and screw
(M4x14, accessory)

Remote controller
cable

En-9

11.3.

Front panel, control box cover replacement

Reinstall by reversing the procedure in “11.1. Front panel, control box cover removal”
(1) Replace the control box cover and screws.

Screw

Screw

(2) Open a hole in the front panel for the remote

controller cable to pass through.

* Choose from 4 knockout holes marked on

the inside of the front panel.

(3) Replace the front cover.

Refer to “8.2. Front panel installation”

(2) Set the R.C. address (Function setting)
Set the R.C. address of each indoor unit using the Function setting.

(a) 3-wire type

Function setting (RC AD setting)...Factory setting “00”

When connecting multiple indoor units to 1 standard wired remote controller, set the

address at RC AD setting in sequence from “00”.

(b) 2-wire type

Function setting (RC AD setting)...Factory setting “00”
Since the remote controller address settings are automatically congured, you do not
need to congure them.
If conguring manually, it is necessary to congure both the indoor unit and the remote

controller. For details, please refer to the remote controller installation manual.

Example

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

If 4 indoor units are connected.

Indoor unit 1

Indoor unit 2 Indoor unit 3 Indoor unit 4

RC AD SW

00

Remote
controller

RC AD SW

01

RC AD SW

02

RC AD SW

03

12. GROUP CONTROL

CAUTION

Group control is only possible between units with remote controllers of the same type.
To conrm the type of remote controller, see the back of the remote controller or
“2.3. Accessories”.

A number of indoor units can be operated at the same time using a single remote controller.
(1) Connect up to 16 indoor units in a system.

I.U. I.U. I.U. I.U.

B C D E

A

Remote
controller

A, B, C, D, E : Remote controller cable.
A+B+C+D+E ≤ 300 m.

Total wiring length of RC Cross section of cable

328ft (100m) or less 0.01-0.03inch (0.3-0.8mm)(AWG 18-22)
328-656ft (100-200m) 0.02-0.03inch (0.5-0.8mm)(AWG 18-20)
656-984ft (200-300m) 0.03inch (0.8mm)(AWG18)

Example of wiring method (3-wire type)

Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4

1 2 3 1 2 3 1 2 3 1 2 3

Remote controller address setting

(♦... Factory setting)

Function

Number

00

* When connecting Polar 3-core wired remote controller, set the remote controller address

in the order of 0, 1, 2, ....., and 15.

* When different type of indoor units (such as wall-mounted type and cassette type, cassette

type and duct type, or other combinations) are connected using group control system, some
functions may no longer be available.

Setting Value Setting Description

00 Unit no. 0 ♦

01 Unit no. 1

02 Unit no. 2

03 Unit no. 3

04 Unit no. 4

05 Unit no. 5

06 Unit no. 6

07 Unit no. 7

08 Unit no. 8

09 Unit no. 9

10 Unit no. 10

11 Unit no. 11

12 Unit no. 12

13 Unit no. 13

14 Unit no. 14

15 Unit no. 15

En-10

1 2 3

R W B

Remote controller

Remote
controller cable

Bus wire

13.

SELECTING THE REMOTE CONTROLLER CUSTOM CODE

14.1.

Function details

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).

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 (

is displayed on the remote controller display.

(2) Press the MODE button for at least 5 seconds to display

the current custom code (initially set to A).

(3) Press the SET TEMP. (

custom 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

/ ) buttons to change the

14. FUNCTION SETTING

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

controller.

CAUTION

• Conrm whether the wiring work for Outdoor unit has been nished.

• Con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.

• Match the custom code of the indoor unit and the custom code of the remote controller.
(See “11. SELECTING THE REMOTE CONTROLLER CUSTOM CODE”.)

Entering the Function Setting Mode

While pressing the POWERFUL button and SET TEMP. ( ) button simultaneously, press
the RESET button to enter the function setting mode.

Selecting the Function Number and Setting Value

(1) Press the SET TEMP. ( / ) buttons to select

the function number. (Press the MIN. HEAT button

to switch between the left and right digits.)

(2) Press the POWERFUL button to proceed to setting

the value. (Press the POWERFUL button again to
return to the function number selection.)

(3) Press the SET TEMP. (

the setting value. (Press the MIN. HEAT button to

switch between the left and right digits.)
Press the MODE button, in the order listed to conrm

(4)

the settings.

Please conrm that the beep sounds.

(5) Next, please press START/STOP (

Please conrm that the beep sounds.

(6) Press the RESET button to cancel the function set-

ting mode.

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

on again.

/ ) buttons to select

) button.

CAUTION

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

The Function Setting does not become active unless the power is turned off then on

again.

Function number

Setting
value

Filter Sign

Select appropriate intervals for displaying the lter sign on the indoor unit according to the

estimated amount of dust in the air of the room.

If the indication is not required, select “No indication” (03).

(♦... Factory setting)

Function Number

11

Auto Restart

Enable or disable automatic restart after a power interruption.

Function Number

40

* 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.

Room temperature sensor switching

(Only for Wired remote controller)

When using the Wired remote controller temperature sensor, change the setting to “Both”

(01).

Function Number

42

00: Sensor on the indoor unit is active.
01: Sensors on both indoor unit and wired remote controller are active.
* Remote controller sensor must be turned on by using the remote controller.

Remote controller custom code

(Only for wireless remote controller)

The indoor unit custom code can be changed.
Select the appropriate custom code.

Function Number

44

External input control

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

Function Number

46

Room temperature sensor switching (Aux.)

To use the temperature sensor on the wired remote controller only, change the setting to
“Wired remote controller” (01). This function will only work if the function setting 42 is set
at “Both” (01)
When the setting value is set to “Both” (00), more suitable control of the room temperature

by setting function setting 30 and 31 too.

Function Number

48

Setting

Value

00 Standard (400 hours)
01 Long interval (1000 hours)
02 Short inter val (200 hours)
03 No indication ♦

Setting

Value

00 Enable ♦
01 Disable

Setting

Value

00 Indoor unit ♦
01 Both

Setting

Value

00 A ♦
01 B
02 C
03 D

Setting

Value

00 Operation/Stop mode 1 ♦
01 (Setting prohibited)
02 Forced stop mode
03 Operation/Stop mode 2

Setting

Value

00 Both ♦
01 Wired remote controller

Setting Description

(♦... Factory setting)

Setting Description

(♦... Factory setting)

Setting Description

(♦... Factory setting)

Setting Description

(♦... Factory setting)

Setting Description

(♦... Factory setting)

Setting Description

En-11

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.

Function Number

49

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.

*When using a wired remote controller without Indoor unit fan control for energy saving for

cooling function, or when connecting a single split converter, the setting cannot be made
by using the remote controller. Set to “00” or “01”.

To conrm if the remote controller has this function, refer to the operating manual of each

remote controller.

Switching functions for external output terminal

Functions of the external output terminal can be switched. For details, refer to “External
input and output”.

Function Number

60

Server room control switching

Switches between normal control and server room control.

To use this function, address setting of the primary unit and secondary unit needs to be done.

Function Number

96

Setting record

Record any changes to the settings in the following table.

Setting

Value

00 Disable

01 Enable
02 Remote controller ♦

Setting

Value

00 Operation status ♦

01-08

09 Error status

10 Indoor unit fan operation status

(refer to Design & Technical

Setting

Value

00 Normal control ♦

Server room control (Primary

01

Server room control (Secondary

02

(♦... Factory setting)

Setting description

(♦... Factory setting)

Setting Description

Other status

manual)

(♦... Factory setting)

Setting Description

unit)

unit)

Setting Description Setting Value

Filter sign

Auto restart

Room temperature sensor switching

Remote controller custom code

External input control

Room temperature sensor switching (Aux.)

Indoor unit fan control for energy saving for cooling

Switching functions for external output terminal

Server room control switching

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

again.

14.2.

Temperature correction

NOTE:

When changing Function 95, perform this setting before other Room temp. control settings
(Function 30, 31, 92, 93).

If Function 95 is not set rst, Room temperature control settings (Function 30, 31, 92, 93)
will be reset and you must re-do them again.

Heat Insulation condition (building insulation)

Heat insulation conditions differ according to the installed environment.

“Standard insulation” (00) allows system to rapidly respond to the cooling or heating load

changes.

“High insulation” (01) is when the heat insulation structure of the building is high and does

not require system to rapidly respond to cooling or heating load changes.

When “High insulation” (01) is selected;

• Overheating (overcooling) is prevented at the start-up.

• All room temp. control settings (Function 30, 31, 92, 93) will reset to “No correction” [0.0°F
(0.0°C)].

(♦... Factory setting)

Function Number

95

Setting

Value

00 Standard insulation ♦
01 High insulation

Setting Description

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).
* When Function 95-01(High insulation) is set, the “Standard setting” (00) will be the same

as “No correction” (01) [0.0°F (0.0°C)].

Function Number

30

(For cooling)31(For heating)

Room temperature control for wired remote controller sensor

Depending on the installed environment, correction of the wire remote temperature sensor

may be required.
Select the appropriate control setting according to the installed environment.

To change this setting, set Function 42 to Both “01”.

Ensure that the Thermo Sensor icon is displayed on the remote controller screen.

Function number

35

(For cooling)

36

(For heating)

Setting

Value

00 Standard setting* ♦

01 No correction 0.0°F (0.0°C)

02 -1°F (-0.5°C)

03 -2°F (-1.0°C)

04 -3°F (-1.5°C)

05 -4°F (-2.0°C)

06 -5°F (-2.5°C)

07 -6°F (-3.0°C)

08 -7°F (-3.5°C)

09 -8°F (-4.0°C)

10 +1°F (+0.5°C)

11 +2°F (+1.0°C)

12 +3°F (+1.5°C)

13 +4°F (+2.0°C)

14 +5°F (+2.5°C)

15 +6°F (+3.0°C)

16 +7°F (+3.5°C)

17 +8°F (+4.0°C)

Setting

value

00 No correction 0.0°F (0.0°C) ♦

01 No correction 0.0°F (0.0°C)

02 -1°F (-0.5°C)

03 -2°F (-1.0°C)

04 -3°F (-1.5°C)

05 -4°F (-2.0°C)

06 -5°F (-2.5°C)

07 -6°F (-3.0°C)

08 -7°F (-3.5°C)

09 -8°F (-4.0°C)

10 +1°F (+0.5°C)

11 +2°F (+1.0°C)

12 +3°F (+1.5°C)

13 +4°F (+2.0°C)

14 +5°F (+2.5°C)

15 +6°F (+3.0°C)

16 +7°F (+3.5°C)

17 +8°F (+4.0°C)

(♦... Factory setting)

Setting Description

(♦... Factory setting)

Setting description

More

Cooling

Less

Heating

Less

Cooling

More

Heating

More

Cooling

Less

Heating

Less

Cooling

More

Heating

En-12

Setting record

Record any changes to the settings in the following table.

•

Heat Insulation condition (building insula­tion)

Room temperature control for indoor unit
sensor

Room temperature control for wired remote

controller sensor

After completing the Function Setting, be sure to turn off the power and turn it on again.

Setting Setting Value

Cooling
Heating
Cooling
Heating

15. 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 Check box

Has the indoor unit been installed correctly?

Has there been a check for gas leaks (refrigerant pipes)?
Has heat insulation work been completed?
Does water drain easily from the indoor units?
Is the voltage of the power source the same as that indicated on the label

on the indoor unit?

Are the wires and pipes all connected completely?

Is the indoor unit grounded?

Is the connection cable the specified thickness?

Are the inlets and outlets free of any obstacles?
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.

16. TEST RUN

Check items

(1) Is operation of each button on the remote controller normal?
(2) Does each lamp light normally?

(3) Do air 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]

By the wireless remote controller

To start the test run, press the START/STOP button, the TEST RUN button on the

•

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 MANUAL AUTO button of the indoor unit

•

for more than 10 seconds.

To end test operation, press the remote controller Start/Stop button.

•

(When the air conditioner is running by pressing the TEST RUN button, the

OPERATION Lamp and TIMER Lamp will simultaneously ash slowly.)

[Using the wired remote controller] (Option)

For the operation method, refer to the operating manual and the installation manual of the
optional remote controller.

17. 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

ow switching, and other remote controller operations.

(2) Air lter removal and cleaning, and how to use the air louvers.

(3) Give the operating manual to the customer.

18. 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 controller display. See the lamp blinking patterns and error codes in

the table. An error display is displayed only during operation.

OPERATION
lamp (green)

(1)



(1)



(1)



Error display

TIMER

lamp

(orange)

(1)



(2)



(5)



ECONOMY

lamp

(green)

Wired

remote

controller

Error code

Description

Serial communication error

Wired remote controller
communication error

Check run unfinished

OPERATION
lamp (green)

(1)



(1)



(2)



(2)



(2)



(2)



(2)



(2)



(2)



(3)



(3)



(3)



(3)



(4)



(4)



(4)



(5)



(5)



(5)



(5)



(5)



(6)



(6)



(6)



(6)



(6)



(6)



(7)



(7)



(7)



(7)



(7)



(7)



Error display

TIMER

lamp

(orange)

(6)



(8)



(1)



(2)



(3)



(4)



(6)



(7)



(9)



(1)



(2)



(5)



(10)



(1)



(2)



(4)



(1)



(3)



(7)



(8)



(15)



(1)



(2)



(3)



(4)



(5)



(10)



(1)



(2)



(3)



(4)



(5)



(6)



ECONOMY

lamp

(green)

Wired

remote

controller

Error code

Description

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 secondary unit)

[Simultaneous Multi]

• Connection unit number error

(indoor unit or branch unit)

[Flexible Multi]

Indoor unit address setting error

Primary unit, secondary unit setup

error [Simultaneous Multi]

Connection unit number error in

wired remote controller system
Power supply interruption error

Indoor unit PCB model
information error

Manual auto switch error

Indoor unit communication circuit

(wired remote controller) error

Room temp. sensor error

Indoor unit Heat Ex. Middle temp.

sensor error
Human sensor error

Indoor unit fan motor error

Drain pump error

Damper error

Intake grille error

Indoor unit error

Outdoor unit reverse/missing

phase and wiring 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

En-13

OPERATION
lamp (green)

(7)



(8)



(8)



(8)



(8)



(9)



(9)



(9)



(9)



(9)



(9)



(10)



(10)



(10)



(10)



(13)



Display mode

Error display

TIMER

(orange)

: 0.5s ON / 0.5s OFF

●

: 0.1s ON / 0.1s OFF

◊

( ) : Number of flashing

lamp

(7)



(2)



(3)



(4)



(6)



(4)



(5)



(7)



(8)



(9)



(10)



(1)



(3)



(4)



(5)



(2)



ECONOMY

lamp

(green)

Wired

remote

controller

Error code

Description

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 (permanent stop)

Outdoor unit fan motor 1 error

Outdoor unit fan motor 2 error

4-way valve error

Coil (expansion valve) error

Discharge temp. error

Compressor temp. error

High pressure error

Low pressure error

Branch boxes error
[Flexible Multi]

En-14