PART NO. 9374318445-05
INSTALLATION MANUAL
For authorized service personnel only.
INSTALLATIONSANLEITUNG
Nur für autorisiertes Personal.
MANUEL D'INSTALLATION
Pour le personnel agréé uniquement.
MANUAL DE INSTALACIÓN
Solo para personal autorizado.
MANUALE D'INSTALLAZIONE
Ad uso esclusivo del personale autorizzato.
ΕΓΧΕΙΡΙΔΙΟ ΕΓΚΑΤΑΣΤΑΣΗΣ
Για εξουσιοδοτημένο προσωπικό σέρβις.
MANUAL DE INSTALAÇÃO
Apenas para técnicos autorizados.
РУКОВОДСТВО ПО УСТАНОВКЕ
Для уполномоченного персонала.
MONTAJ KILAVUZU
Yetkili servis personeli içindir.
INSTALLATION MANUAL
AIR CONDITIONER
INDOOR UNIT
Floor/Ceiling Type
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1. SAFETY PRECAUTIONS
Be sure to read this• Manual thoroughly before installation.
The warnings and precautions indicated in this Manual contain important information per-•
taining to your safety. Be sure to observe them.
Hand this Manual, together with the Operating Manual, to the customer. Request the cus-•
tomer to keep them on hand for future use, such as for relocating or repairing the unit.
WARNING
This mark indicates procedures which, if improperly performed, might lead to the death or serious injury of the user.
Request your dealer or a professional installer to install the indoor unit in accordance
with this Installation Manual. An improperly installed unit can cause serious accidents
such as water leakage, electric shock, or fi re. If the indoor unit is installed in disregard of
the instructions in the Installation Manual, it will void the manufacturer’s warranty.
Do not turn ON the power until all work has been completed. Turning ON the power
before the work is completed can cause serious accidents such as electric shock or fi re.
If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant
comes in contact with a fl ame, it produces a toxic gas.
Installation work must be performed in accordance with national wiring standards by
authorized personnel only.
CAUTION
This mark indicates procedures which, if improperly performed, might possibly result in personal harm to the user, or
damage to property.
Read carefully all security information before use or install the air conditioner.
Do not attempt to install the air conditioner or a part of the air conditioner by yourself.
This unit must be installed by qualifi ed personnel with a capacity certifi cate for handling
refrigerant fl uids. Refer to regulation and laws in use on installation place.
The installation must be carried out in compliance with regulations in force in the place
of installation and the installation instructions of the manufacturer.
This unit is part of a set constituting an air conditioner. It must not be installed alone or
with non-authorized by the manufacturer.
Always use a separate power supply line protected by a circuit breaker operating on all
wires with a distance between contact of 3mm for this unit.
The unit must be correctly grounded and the supply line must be equipped with a dif-
ferential breaker in order to protect the persons.
The units are not explosion proof and therefore should not be installed in explosive
atmosphere.
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.
Never touch electrical components immediately after the power supply has been turned
off. Electric shock may occur. After turning off the power, always wait 5 minutes before
touching electrical components.
This unit contains no user-serviceable parts. Always consult authorized service personnel to repairs.
When moving, consult authorized service personnel for disconnection and installation
of the unit.
2. ABOUT THE UNIT
2.1. Precautions for using R410A refrigerant
WARNING
Do not introduce any substance other than the prescribed refrigerant into the refrigeration cycle. If air enters the refrigeration cycle, the pressure in the refrigeration cycle will
become abnormally high and cause the piping to rupture.
If there is a refrigerant leak, make sure that it does not exceed the concentration limit.
If a refrigerant leak exceeds the concentration limit, it can lead to accidents such as
oxygen starvation.
Do not touch refrigerant that has leaked from the refrigerant pipe connections or other
area. Touching the refrigerant directly can cause frostbite.
If a refrigerant leak occurs during operation, immediately vacate the premises and thoroughly ventilate the area. If the refrigerant comes in contact with a fl ame, it produces a
toxic gas.
2.2. Special tool for R410A
WARNING
To install a unit that uses R410A refrigerant, use dedicated tools and piping materials that have been manufactured specifi cally for R410A use. Because the pressure of
R410A refrigerant is approximately 1.6 times higher than the R22, failure to use dedicated piping material or improper installation can cause rupture or injury. Furthermore, it
can cause serious accidents such as water leakage, electric shock, or fi re.
Tool name Changes
Gauge manifold
The pressure in the refrigerant system is extremely
high and cannot be measured with a conventional
gauge. To prevent erroneous mixing of other refrigerants, the diameter of each port has been changed. It
is recommended to use a gauge manifold with a high
pressure display range of –0.1 to 5.3 MPa and a low
pressure display range of –0.1 to 3.8 MPa.
Charging hose
To increase pressure resistance, the hose material
and base size were changed.
(The charging port thread diameter for R410A is 1/2
UNF 20 threads per inch.)
Vacuum pump
A conventional vacuum pump can be used by installing a vacuum pump adapter.
Be sure that the pump oil does not back fl ow into
the system. Use one capable for vacuum suction of
–100.7 kPa (5 Torr, –755 mmHg).
Gas leakage detector Special gas leakage detector for R410A refrigerant.
2.3. Accessories
WARNING
For installation purposes, be sure to use the parts supplied by the manufacturer or •
other prescribed parts.
The use of non-prescribed parts can cause serious accidents such as the unit falling, water leakage, electric shock, or fi re.
The following installation parts are furnished. Use them as required.•
Keep the Installation Manual in a safe place and do not discard any other accessories •
until the installation work has been completed.
Contents
1. SAFETY PRECAUTIONS ................................................................................................1
2. ABOUT THE UNIT ...........................................................................................................1
2.1. Precautions for using R410A refrigerant ..................................................................1
2.2. Special tool for R410A ............................................................................................. 1
2.3. Accessories ..............................................................................................................1
2.4. Optional parts ..........................................................................................................2
3. INSTALLATION WORK ...................................................................................................2
3.1. Selecting an installation location ..............................................................................2
3.2. Installation dimension ..............................................................................................2
3.3. Installation the unit ...................................................................................................3
4. PIPE INSTALLATION ......................................................................................................4
4.1. Selecting the pipe material ......................................................................................4
4.2. Pipe requirement .....................................................................................................4
4.3. Flare connection (pipe connection) ..........................................................................4
4.4. Installing heat insulation ..........................................................................................5
5. INSTALLING DRAIN HOSE ............................................................................................5
6. ELECTRICAL WIRING ....................................................................................................6
6.1. Wiring system diagram ............................................................................................7
6.2. Connection cable preparation ..................................................................................7
6.3. Connection of wiring ................................................................................................7
6.4.
Floor/ceiling select switch .......................................................................................................8
7. MOUNT THE COVER PLATE AND THE INTAKE GRILLE .............................................8
8. REMOTE CONTROLLER SETTING ...............................................................................8
8.1. Load batteries (R03/LR03 × 2) ................................................................................8
8.2.
Installing the remote controller holder ............................................................................ 9
9. FUNCTION SETTING .....................................................................................................9
9.1. Operation method .................................................................................................... 9
9.2. Function setting .....................................................................................................10
9.3. Selecting the remote controller signal code ...........................................................10
9.4. Special installation methods ..................................................................................11
10. TEST RUN ...................................................................................................................12
11. CHECK LIST ................................................................................................................13
12. OPTIONAL KIT INSTALLATION (OPTION) .................................................................13
12.1. Wired remote controller (Simple remote controller) ............................................. 13
12.2. External input and external output ....................................................................... 13
13. CUSTOMER GUIDANCE ............................................................................................13
14. ERROR CODES ..........................................................................................................13
INSTALLATION MANUAL
PART NO. 9374318445-05
INDOOR UNIT (Floor/Ceiling Type)
En-2
Name and Shape Q’ty Name and Shape Q’ty
Operating Manual
1
Installation Manual
(This manual)
1
Cover plate (left)
1
Cover plate (right)
1
Screw (M4 × 10 mm)
2
Installation template
Positioning for under ceiling
type
1
Bracket (left)
For suspending the indoor unit
from ceiling
1
Bracket (right)
For suspending the indoor unit
from ceiling
1
Special nut
For suspending the indoor unit
from ceiling
4
Wall bracket
For suspending the
indoor unit on the wall
2
Screw (M4 × 20 mm)
For fi xing the wall bracket
6
Coupler heat insulator (Large)
For indoor side pipe joint (Large
pipe)
1
Coupler heat insulator (Small)
For indoor side pipe
joint (Small pipe)
1
Cable-tie (Large)
For fi xing the drain hose
1
Cable-tie (Small)
For electrical wiring
2
Wire clamper
For electrical wiring
1
Drain hose
1
Hose band
For installing drain
hose
1
Insulation (drain hose)
Adhesive type 100 × 220 (mm)
1
VT wire
For fi xing the drain hose L
280 mm
1
Remote controller
For air conditioner
operation
1
Battery
For remote controller
2
Remote controller
holder
1
Screw (M3 × 12 mm)
For remote controller holder
installation
2
2.4. Optional parts
Parts name Model No. Summary
Wired remote controller UTY-RNN*M
Unit control is performed by
wired remote controller
Simple Remote Controller UTY-RSN*M
For air conditioner operation
External connect kit UTY-XWZX For control input/output port
Wired remote controller is recommended using simultaneous twin or triple connection.
3. INSTALLATION WORK
Especially, the installation place is very important for the split type air conditioner because
it is very diffi cult to move from place to place after the fi rst installation.
3.1. Selecting an installation location
Decide the mounting position together with the customer as follows.
WARNING
Select installation locations that can properly support the weight of the indoor unit.
Install the units securely so that they do not topple or fall.
CAUTION
Do not install the indoor unit in the following areas:
Area with high salt content, such as at the seaside. It will deteriorate metal parts, •
causing the parts to fall or the unit to leak water.
Area 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 fall or the unit
to leak water.
Area that generates substances that adversely affect the equipment, such as sulfu-•
ric 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 infl 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 install where there is the danger of combustible gas leakage.
Do not install the unit near a source of heat, steam, or fl ammable gas.
Install the indoor unit, outdoor unit, power supply cable, transmission cable, and
remote controller 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.
Take precautions to prevent the unit from falling.
Install the indoor unit on a place having a suffi cient strength so that it withstands (1)
against the weight of the indoor unit.
The inlet and outlet ports should not be obstructed; the air should be able to blow all (2)
over the room.
Leave the space required to service the air conditioner.(3)
Install the unit where connection to the outdoor unit is easy. (4)
Install the unit where the connection pipe can be easily installed. (5)
Install the unit where the drain pipe can be easily installed.(6)
Install the unit where noise and vibrations are not amplifi ed.(7)
Take servicing, etc., into consideration and leave the spaces. Also install the unit (8)
where the fi lter can be removed.
Do not install the unit where it will be exposed to direct sunlight.(9)
3.2. Installation dimension
A. Floor type
Left
300 300
Unit : mm
Right
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When installing set to wall install the accessory wall bracket at the position as shown in
the fi gure, and mount the set to it.
Wall bracket
Side of set
Unit : mm
990
500
245
100
100
65
65
50
125
530
45
655
B. Ceiling type
Using the installation template, drill holes for piping and suspension bolts (for holes).
Installation
template
Drilling position for
suspension bolt
Wall
Ceiling
Drilling position for piping
Unit : mm
900
200
B-1. Drilling for piping
Select piping and drain directions.
Top
Right
Hole
VIEW
Rear
(Install the drain hose in this direction.)
For direction
(Rear), bore the oval hole shown in the above fi gure.
CAUTION
Install the drain hose at the rear; it should not be installed on the top or right side.
When the directions are selected, drill 80 mm and 50 mm or 150 mm dia. hole on the wall
so that the hole is tilted downward toward the outdoor for smooth water fl ow.
6
Wall
Indoor side Outdoor side
Unit : mm
B-2. Drilling the holes and attaching the suspension bolts
Drill Φ25 mm holes at the suspension bolt locations, then install the bolts.
Bolt Strength 980 to 1470 N (100 to 150 kgf)
Ceiling panel
20 to 50 mm
Φ25 mm
[If using anchor bolts]
Drill holes for anchor bolts at the locations at which you will set the suspension bolts.
Note that anchor bolts are M10 bolts (to be obtained locally).
Anchor-Bolt Strength 980 to 1470 N (100 to 150 kgf)
Ceiling
20 to
50 mm
M10 Anchor bolt
(Field supply)
B. Ceiling type
Ceiling
Ceiling
Left
150
2300
Floor Unit : mm
20
300
Indoor unit
Right
3.3. Installation the unit
WARNING
Install the air conditioner in a location which can withstand a load of at least fi ve times
the weight of the main unit and which will not amplify sound or vibration. If the installation location is not strong enough, the indoor unit may fall and cause injuries.
3.3.1. Preparing indoor unit installation
Open the intake grille and remove the 3 screws.
Tapping screw
Intake grille
Machine screw
Tapping screw
Remark : The main unit can be wired before the indoor unit is installed.
Select the most appropriate installation order.
3.3.2. Indoor unit installation
A. Floor type
Drilling for piping
Select piping and drain directions.
The piping and drain can be made in three directions as shown below.
Rear
Right
Bottom
(Install the drain hose
in this direction.)
Hole
VIEW
For direction
(Bottom), bore the oval hole shown in the above fi gure.
The drain hose can be connected to either the left or right side.
Drain hose
(Left side)
Drain hose
(Right side)
When the directions are selected, drill a 100 mm dia. hole on the wall so that the hole is
tilted downward toward the outdoor for smooth water fl ow.
When the pipe is led out from the rear, make a hole as shown in the fi gure, at the position
shown.
Wall
100
Indoor side
Outdoor side Unit : mm
6
En-4
Do not use copper pipes that have a collapsed, deformed, or discolored portion (especially on the interior surface). Otherwise, the expansion valve or capillary tube may
become blocked with contaminants.
Improper pipe selection will degrade performance. As an air conditioner using R410A
incurs pressure higher than when using conventional refrigerant, it is necessary to
choose adequate materials.
Thicknesses of copper pipes used with R410A are as shown in the table.•
Never use copper pipes thinner than those indicated in the table even if they are avail-•
able on the market.
Thicknesses of Annealed Copper Pipes (R410A)
Pipe outside diameter [mm (in.)] Thickness [mm]
6.35 (1/4) 0.80
9.52 (3/8) 0.80
12.70 (1/2) 0.80
15.88 (5/8) 1.00
19.05 (3/4) 1.20
4.2. Pipe requirement
CAUTION
Refer to the Installation Manual of the outdoor unit for description of the length and the
diameter of connecting pipe or for difference of its elevation.
Use pipe with water-resistant heat insulation.•
CAUTION
Install heat insulation around both the gas and liquid pipes. Failure to do so may cause
water leaks.
Use heat insulation with heat resistance above 120 °C. (Reverse cycle model only)
In addition, if the humidity level at the installation location of the refrigerant piping is
expected to exceed 70 %, install heat insulation around the refrigerant piping.
If the expected humidity level is 70-80 %, use heat
insulation that is 15 mm or thicker and if the expected humidity exceeds 80 %, use
heat insulation that is 20 mm or thicker. If heat insulation is used that is not as thick as
specifi ed, condensation may form on the surface of the insulation.
In addition, use heat insulation with heat conductivity of 0.045 W/(m·K) or less (at 20 °C).
4.3. Flare connection (pipe connection)
4.3.1. Flaring
Use special pipe cutter and fl are tool exclusive for R410A.•
Cut the connection pipe to the necessary length with a pipe cutter.(1)
Hold the pipe downward so that cuttings will not enter the pipe and remove any burrs.(2)
Insert the fl are nut (always use the fl are nut attached to the indoor and outdoor units (3)
respectively) onto the pipe and perform the fl are processing with a fl are tool.
Leakage of refrigerant may result if other fl are nuts are used.
Protect the pipes by pinching them or with tape to prevent dust, dirt, or water from (4)
entering the pipes.
L
Die
Pipe
Check if [L] is fl ared uniformly
and is not cracked or scratched.
Pipe outside diameter
[mm (in.)]
Dimension A [mm]
Dimension B
-00.4
[mm]
Flare tool for R410A,
clutch type
6.35 (1/4)
0 to 0.5
9.1
9.52 (3/8) 13.2
12.70 (1/2) 16.6
15.88 (5/8) 19.7
19.05 (3/4) 24.0
When using conventional fl are tools to fl are R410A pipes, the dimension A should be ap-
proximately 0.5 mm more than indicated in the table (for fl aring with R410A fl are tools) to
achieve the specifi ed fl aring. Use a thickness gauge to measure the dimension A.
Width across
fl ats
Pipe outside
diameter [mm (in.)]
Width across fl ats of
Flare nut [mm]
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
B-3. Installing Brackets
Install the bracket with nuts, spring washers.
Ceiling panel
Special nut A
(Accessories)
Bracket
M10 Nut (Field supply)
M10 Nut (Field supply)
Spring washer
(Field supply)
Bracket (Left)
Bracket (Right)
B-4. Installing indoor unit
Reset the hex bolts as shown in the fi gure
Indoor unit
Hex bolt
8 to 13
Unit : mm
Apply the indoor unit to the brackets.
Bolt
Bracket
Indoor unit
Now, securely tighten the hex bolts in both sides.
3.3.3. Barrier and RFM base removal and installation
Remove the barriers by removing the 4 fi xing screws (2 screws each).(1)
Remove the RFM base by removing the 2 fi xing screws and unhooking the 1 hook.(2)
After completing the work, install the barriers and RFM base as they were originally.(3)
Fixing screw
(2 positions)
Barriers
RFM base
Hook
Fixing screw
(2 positions)
Install the barriers in the correct direction.
4. PIPE INSTALLATION
CAUTION
Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with
refrigerant R410A models. Also, when storing the piping, securely seal the openings by
pinching, taping, etc.
While welding the pipes, be sure to blow dry nitrogen gas through them.
4.1. Selecting the pipe material
CAUTION
Do not use existing pipes.
Use pipes that have clean external and internal sides without any contamination which
may cause trouble during use, such as sulfur, oxide, dust, cutting waste, oil, or water.
It is necessary to use seamless copper pipes.
Material : Phosphor deoxidized seamless copper pipes It is desirable that the amount
of residual oil is less than 40 mg/10 m.
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Indoor unit
Gas pipe Liquid pipe
No gap
Coupler heat
insulation
No gap
Coupler heat
insulator (large)
Coupler heat
insulator (small)
Be sure to overlap the
insulation
CAUTION
There should be no gaps between the insulation and the unit.
5. INSTALLING DRAIN HOSE
CAUTION
Install the drain hose in accordance with the instructions in this Installation Manual and
keep the area warm enough to prevent condensation. Problems with the piping may
lead to water leaks.
Adhesive (polyvinyl chloride) so that there is no leakage. Always heat insulate the indoor
side of the drain hose. Use a drain pipe that matches the size of the drain hose.
Do not perform a rise, trap and air bleeding.•
Provide a downward gradient (1/100 or more).•
Provide supporters when long pipes are installed.•
Use an insulation material as needed, to prevent the pipes from freezing.•
Install the pipes in a way that allows for the removal of the control box.•
O.D.
Drain pipe 32 mm (VP25)
When using the drain port on the left side of the unit, remove the drain cap and install it to
the right side drain port. (Only when suspended from the ceiling)
Drain cap
Unit
INSTALL THE DRAIN HOSE
Working procedure
Install the attached drain hose to the drain port of the body. Install the hose band from (1)
the top of the hose within the graphic display area. Secure fi rmly with the hose band.
Use vinyl adhesive agent to glue the drain piping (PVC pipe VP25) which is prepared (2)
on site or piping socket. (Apply color adhesive agent evenly until the gauge line and
seal)
Check the drainage.(3)
Install the heat insulation.(4)
Use the attached heat insulation to insulate the drain port and band parts of the body.(5)
Top view
Drain pan
Ensure there is no space
10~15 mm
Drain hose
(Accessories)
Hose Band (Accessories)
Soft PVC side
Side view
Applying area of adhesive.
Hard PVC side
Joint pipe (Field supply)
4 mm or less
Drain pipe (VP25)
(Field supply)
Wrap the Drain hose insulation around the drain hose connection.
4.3.2 Bending pipes
The pipes are shaped by your hands or pipe bender. Be careful not to collapse them.•
Do not bend the pipes at 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.
CAUTION
To prevent breaking of the pipe, avoid sharp bends.
If the pipe is bent repeatedly at the same place, it will break.
4.3.3. Pipe connection
Centering the pipe against port on the indoor unit, turn the fl are nut with your hand. Be (1)
sure that the small pipe is completely installed before connecting the large the pipe.
CAUTION
Be sure to apply the pipe against the port on the indoor unit and the outdoor unit
correctly. If the centering is improper, the fl are nut cannot be tightened smoothly. If the
fl are nut is forced to turn, the threads will be damaged.
Do not remove the fl are nut from the indoor unit pipe until immediately before connect-
ing the connection pipe.
Do not use mineral oil on fl ared part. Prevent mineral oil from getting into the system
as this would reduce the lifetime of the units.
Install the outdoor unit wall cap (supplied with the optional installation set or procured (2)
at the site) to the wall hole pipe.
Connect the outdoor unit and indoor unit piping.(3)
After matching the center of the fl are surface and tightening the nut hand tight, tighten (4)
the nut to the specifi ed tightening torque with a torque wrench.
CAUTION
Hold the torque wrench at its grip, keeping it in the right angle with the pipe, in order to
tighten the fl are nut correctly.
Tighten the fl are nuts with a torque wrench using the specifi ed tightening method. Oth-
erwise, the fl are nuts could break after a prolonged period, causing refrigerant to leak
and generate a hazardous gas if the refrigerant comes into contact with a fl ame.
Torque wrench
Tighten with 2 wrenches.
Holding wrench
Flare nut
Connection pipe
Indoor unit pipe
(Body side)
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)
4.4. Installing heat insulation
CAUTION
After checking for gas leaks (refer to the Installation Manual of the outdoor unit),
perform this section.
Install heat insulation around both the large (gas) and small (liquid) pipes. Failure to do
so may cause water leaks.
After checking for gas leaks, insulate by wrapping insulation around the 2 parts (Gas and
Liquid) of the indoor unit coupling, using the coupler heat insulation.
After installing the coupler heat insulation, wrap both ends with vinyl tape so that there is
no gap.
Secure both ends of the heat insulation material using cable-tie.
And fi nally fi x connection pipe (Liquid) to connection pipe (Gas) by rolling vinyl tape over
coupler heat insulation (Gas) and coupler heat insulation (Liquid).
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Top view
Drain pan
100mm
Drain hose
Drain hose insulation
(Accessories)
Hose opening view
Wind the attached heat insulation around the
hose band. Make sure the alignment is on top.
A. Floor type
Be sure to arrange the drain hose so that it is leveled lower than the drain hose connecting port of the indoor unit.
Drain
hose
Lift up
Trap
Good No good No good
Arrange the drain
hose lower than
this portion.
CAUTION
Do not install the unit so that the drain hose side is too high. Height A should be less
than 5 mm.
AA
Drain hose
No good No good
B. Ceiling type
Be sure to arrange the drain hose so that it is leveled lower than the drain hose connecting port of the indoor unit.
Lift up
Drain hose
Good No good
Arrange the drain
hose lower than
this portion.
When drain hose is arranged backward.
Secure the drain hose with the VT wire.
VT wire
hole
Pass the drain hose
through here.
Base (Bottom)
Intake grille
Cut the grille
Drain hose
VT wire
6. ELECTRICAL WIRING
Cable Cable size (mm2) Type Remarks
Connection cable 1.5 (MIN.) Type 60245 IEC57 3Cable+Ground, 1φ230V
Max. Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage drop is
2% or more.
For simultaneous multi
Conductor size (mm2) Max length (m)
Bus wire 0.3 (MIN.) 500*
This length shall be the total extended length in the system of the group
.
(Total length of bus wire and remote controller cable.)
WARNING
Electrical work must be performed in accordance with this Manual by a person certifi ed
under the national or regional regulations. Be sure to use a dedicated circuit for the unit.
An insuffi cient power supply circuit or improperly performed electrical work can cause
serious accidents such as electric shock or fi re.
Before starting work, check that power is not being supplied to the indoor unit and
outdoor unit.
Use the included transmission cables and power cables or ones specifi ed by the
manufacturer. Improper connections, insuffi cient insulation, or exceeding the allowable
current can cause electric shock or fi re.
For wiring, use the prescribed type of wires, connect them securely, making sure that
there are no external forces of the wires applied to the terminal connections. Improperly connected or secured wires can cause serious accidents such as overheating the
terminals, electric shock, or fi re.
Do not modify the power cables, use extension cables, or use any branches in the wiring. Improper connections, insuffi cient insulation, or exceeding the allowable current can
cause electric shock or fi re.
Match the terminal block numbers and connection cable colors with those of the outdoor
unit or branch box. Erroneous wiring may cause burning of the electric parts.
Securely connect the connection cables to the terminal blocks. In addition, secure the
cables with wiring holders. Improper connections, either in the wiring or at the ends of
the wiring, can cause a malfunction, electric shock, or fi re.
Always fasten the outside covering of the connection cable with the cable clamp. (If the
insulator is chafed, electric leakage may occur.)
Securely install the electrical box cover on the unit. An improperly installed electrical box
cover can cause serious accidents such as electric shock or fi re through exposure to
dust or water.
Install sleeves into any holes made in the walls for wiring. Otherwise, a short circuit
could result.
Install a earth leakage breaker. In addition, install the earth leakage breaker so that the
entire AC main power supply is cut off at the same time. Otherwise, electric shock or fi re
could result.
Always connect the earth wire.
Improper grounding work can cause electric shocks.
Install the remote controller cable and bus wire so as not to be direct touched with your
hand.
(1) Use ring terminals with insulating sleeves as shown in the fi 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.
(3) Use the specifi ed wires, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(4) Use an appropriate screwdriver to tighten the terminal screws. Do not use a 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.
(6) See the table 1 for the terminal screw tightening torques.
Strip 10 mm
Sleeve
Ring terminal
Screw with
special washer
Screw with special washer
Ring terminal
Ring
terminal
Wire
Wire
Terminal block
Terminal
board
Table 1
Tightening torque
M4 screw 1.2 to 1.8 N·m (12 to 18 kgf·cm)
WARNING
Use crimp-type terminals, and tighten the terminal screws to the specifi ed torques. Other-
wise, overheating may be produced, and possibly cause heavy damage inside the unit.
En-7
R
W
B
*
*
Simultaneous twin (18, 22, 24 type only)
Connection cable
Indoor unit (Primary)
Indoor unit
(Secondary)
Junction box
(Local purchase)
Outdoor unit
Earth (Ground) line
Control line
Power line
Earth (Ground) line
Wired remote controller cable
Indoor unit (Primary)
Indoor unit
(Secondary)
Wired remote
controller
Remote controller cable
Bus wire
(Local purchase)
Red
White
Black
*Earth (Ground) the remote controller if it has a earth (ground) line.
• Connect the remote controller wires to the primary unit.
R
W
B
*
*
Simultaneous triple (18 type only)
Wired remote controller cable
Connection cable
Indoor unit (Primary)
Indoor unit
(Secondary)
Outdoor unit
Earth (Ground) line
Control line
Power line
Wired remote
controller
Remote controller cable
Bus wire
( Local purchase )
Junction box
(Local purchase)
Earth (Ground) line
Red
White
Black
• Connect the remote controller wires to the primary unit.
Wired remote controller is recommended using simultaneous twin or triple connection.
*Earth (Ground) the remote controller if it has a earth (ground) line.
Indoor unit
(Secondary)
Indoor unit (Primary)
Indoor unit
(Secondary)
Indoor unit
(Secondary)
6.1. Wiring system diagram
Connection diagrams
R
W
B
*
*
Standard pair
Indoor unit
Indoor unit
Indoor unit
Remote controller cable
*Earth (Ground) the remote controller if it has a earth (ground) line.
Red
White
Black
Wired remote
controller
Earth (Ground) line
Outdoor unit
Power line
Control line
Connection cable
Wired remote controller cable
R
W
B
*
*
R
W
B
*
*
Flexible multi
Indoor unit
Outdoor unit
Indoor unit
Red
White
Black
Earth (Ground) line
Control line
Connection cable
Wired remote controller cable
Power line
Indoor unit
Remote controller cable
*Earth (Ground) the remote controller if it has a earth ground) line.
Wired remote
controller
UNIT A
UNIT B
Flexible multi (branch box)
Indoor unit
Branch box
Outdoor unit
Control line
Control line
Power line
Power line
Indoor unit
Earth (Ground) line
Red
White
Black
Wired remote controller cable
Connection cable
Indoor unit
Remote controller cable
*Earth (Ground) the remote controller if it has a earth ground) line.
Wired remote
controller
INDOOR UNIT A
INDOOR UNIT B
OUTDOOR UNIT
En-8
CAUTION
Tighten the indoor unit
connection cable and power supply indoor and outdoor unit,
branch box terminal board connections fi rmly with the terminal board screws. Faulty
connection may cause a
fi re.
If the indoor unit connection cable and power supply are wired incorrectly, the air conditioner may be damaged.
Connect the indoor unit connection cable by matching the numbers of the outdoor,
branch box and indoor units terminal board numbers as shown in terminal label.
Earth both the indoor and outdoor, branch box units by attaching a earth cable.
Unit shall be grounded in compliance with the applicable local and national cables.
CAUTION
Be sure to refer to the above diagram for do correct fi eld wiring. Wrong wiring causes mal-
function of the unit.
Check local electrical rules and also any specifi c wiring instructions or limitation.
6.2. Connection cable preparation
Keep the earth wire longer than the other wires.
Power supply cable
or connection cable
20 mm
50mm or more
Earth wire
• Use a 4-core wire cable.
6.3. Connection of wiring
(1) Remove the 4 topping screws.
Electric component
box
Electric component box
RFM
CAUTION
Do not remove the screws. If the stays are removed, the electric component box will
fall.
If you use as “Floor console”, you must remove screws and RFMs (2 positions).
(2) Pull out the electric component box.
Electric component box
Wires
Clamp
Remove the
clamp.
Install the
clamp.
When removing the electric component box, remove the clamp from the cables.•
After completing the work, fasten the cables as they were originally by installing the •
clamp.
Remove the electric component box cover.(3)
Base
Electric component cover box
Remove the 3 tapping screws.
CAUTION
Be careful not to pinch the lead wires between the electric component box and base.
(4) After wiring is complete, secure the remote controller cable, connection cable with the
cable-tie.
Cable-tie (accessory)
Remove excess after
installing
Wired remote controller cable (option)
Transmission cable
Install the electrical component box in the original position after securing the cover.(5)
Install the connection cable with the supplied wire clamper.(6)
Transmission cable
Wire clamper (accessory)
Remove excess after
installing
CAUTION
Do not bundle the remote controller cable, or wire the remote controller cable in parallel, with the indoor unit connection wire (to the outdoor unit) and the power supply
cable. It may cause erroneous operation.
6.4.
Floor/ceiling select switch
This unit was set for use as a ceiling type at the factory.(1)
When using the unit as a fl oor type, perform the following settings in FUNCTION SET-(2)
TING. (Refer to 9. FUNCTION SETTING.)
Setting the Cooler Room Temperature Correction
→ Setting Value “01”
Setting the Heater Room Temperature Correction
→ Setting Value “01”
7. MOUNT THE COVER PLATE AND THE INTAKE
GRILLE
1. Mount the cover plate (right)
Cut a pipe exit hole in the right plate. This is only when the pipe exits from the right (1)
side. (This operation is not required when the protrusion is on the top or rear.)
Cover plate (Right)
Join the cover plates (right) and mount with the screw (ø4 × 10).(2)
En-9
2. Mount the cover plate (left)
Join the cover plates (left) and mount with the screw (M4 × 10).
Cover plate (Left)
3. Mount the intake grille
Cut the right side of the intake grille. This is only when the pipe exits from the right side.(1)
Insert the hinges on the bottom of the intake grille into the holes in the base assembly. (2)
Then mount the arms to the 3 areas on the top of the intake grille.
8. REMOTE CONTROLLER SETTING
Refer to the installation manual enclosed with the remote controller when the wired
remote controller (option) is used.
8.1. Load batteries (R03/LR03 × 2)
Press and slide the battery compartment lid on the reverse side to open it. Slide in the (1)
direction of the arrow while pressing the
mark.
Insert batteries. (2)
Be sure to align the battery polarities (＋ −) correctly.
Close the battery compartment lid.(3)
CAUTION
Take care to prevent infants from accidentally swallowing batteries.
When not using the Remote Controller for an extended period, remove the batteries to
avoid possible leakage and damage to the unit.
If leaking battery fl uid comes in contact with your skin, eyes, or mouth, immediately
wash with copious amounts of water, and consult your physician.
Dead batteries should be removed immediately and disposed of properly, either in a
battery collection receptacle or to the appropriate authority.
Do not attempt to recharge dry batteries.
NOTE：
Never mix new and used batteries, or batteries of different types.•
Batteries should last about 1 year under normal use. If the Remote controller’s operating •
range becomes appreciably reduced, replace the batteries and press the RESET button
with the tip of a ballpoint pen or other small object.
8.2.
Installing the remote controller holder
CAUTION
Check that the indoor unit correctly receives the signal from the remote controller, then
install the remote controller holder.
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.
Install the remote controller with a distance of 7 m between the remote controller and •
the photocell as the criteria. However, when installing the remote controller, check that it
operates positively.
Install the remote controller holder to a wall, pillar, etc., with the tapping screw.•
Mount the holder.(1)
Set the remote controller.(2)
To remove the remote controller (when use at hand).(3)
Screws
Insert
Press in
Slide up
Pull out
(3)(2)(1)
9. FUNCTION SETTING
CAUTION
Confi rm whether the wiring work for outdoor unit has been fi nished.
Confi rm whether the cap for electric control box on the outdoor unit is close.
This procedure changes to the function settings used to control the indoor unit according •
to the installation conditions. Incorrect settings can cause the indoor unit malfunction.
After the power is turned on, perform the “FUNCTION SETTING” according to the instal-•
lation 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.•
Refer to the installation manual enclosed with the remote controller when the wired •
remote controller (option ) is used.
9
9.1. Operation method
While pressing the FAN button and SET TEMP. (• ) simultaneously, press the RESET
button to enter the function setting mode.
STEP 1
Selecting the Remote Controller Signal
Code
Use the following steps to select the signal code of the
remote controller. (Note that the air conditioner cannot
receive a signal code if the air conditioner has not been
set for the signal code.)
The signal codes that are set through this process are
applicable only to the signals in the FUNCTION SETTING.
For details on how to set the signal codes through the
normal process, refer to Remote controller signal code.
Press SET TEMP. ((1) ) ( ) button to change the
signal code between Match the
code on he display to the air conditioner signal code.
(initially set to
) (If the signal code does not need
to be selected, press the MODE button and proceed
to STEP 2.)
Press the TIMER MODE button and check that the (2)
indoor unit can receive signals at the displayed signal
code.
Press the MODE button to accept the signal code, and (3)
proceed to STEP 2.
The air conditioner signal code is factory-set to A .
Contact your retailer to change the signal code.
The remote controller resets to signal code A when the batteries in the remote controller
are replaced. If you use a signal code other than signal code A, reset the signal code
after replacing the batteries.
If you do not know the air conditioner signal code setting, try each of the signal codes
( ) until you fi nd the code which operates the air conditioner.
En-10
STEP 2
Selecting the Function Number and Setting Value
Press the SET TEMP. ((1) ) ( ) buttons
to select the function number. (Press the
MODE button to switch between the left
and right digits.)
Press the FAN button to proceed to (2)
setting the value. (Press the FAN button
again to return to the function number
selection.)
Press the SET TEMP. ((3) ) ( ) buttons
to select the setting value. (Press the
MODE button to switch between the left
and right digits.)
Press the TIMER MODE button, and (4)
START/STOP button, in the order listed
to confi rm the settings.
Press the RESET button to cancel the (5)
function setting mode.
After completing the FUNCTION SET-(6)
TING, be sure to turn off the power and
turn it on again.
CAUTION
After turning off the power, wait 30 seconds or more before turning on it again. The
FUNCTION SETTING doesn’t become effective if it doesn’t do so.
9.2. Function setting
(1) Filter sign
The indoor unit has a sign to inform the user that it is time to clean the fi lter. Select the
time setting for the fi lter sign display interval in the table below according to the amount
of dust or debris in the room. If you do not wish the fi lter sign to be displayed, select the
setting value for “No indication”.
(¡... Factory setting)
Setting description
Function number Setting value
Standard (400 hours)
11
00
Long interval (1,000 hours) 01
Short interval (200 hours) 02
¡
No indication 03
(2) Ceiling height
Select the setting values in the table below according to the height of the ceiling.
(¡... Factory setting)
Setting description
Function number Setting value
¡
Standard
20
00
High ceiling 01
* When using fl oor console installation, don’t need to change the setting value.
(3) Cooling room temperature correction
Depending on the installed environment, the room temperature sensor may require a correction.
The settings may be selected as shown in the table below.
(¡... Factory setting)
Setting description
Function number Setting value
¡
Standard
30
00
Slightly lower control 01
Lower control 02
Warmer control 03
When using fl oor console installation, change the setting value to “01”.
(4) Heating room temperature correction
Depending on the installed environment, the room temperature sensor may require a correction.
The settings may be changed as shown in the table below.
(¡... Factory setting)
Setting description
Function number Setting value
¡
Standard
31
00
Lower control 01
Slightly warmer control 02
Warmer control 03
When using fl oor console installation, change the setting value to “01”.
(5) Auto restart
Enable or disable automatic system restart after a power outage.
(¡... Factory setting)
Setting description
Function number Setting value
¡
Yes
40
00
No 01
* Auto restart is an emergency function such as for power failure etc. Do not start and stop
the indoor unit by this function in normal operation. Be sure to operate by the control unit,
or external input device.
(6) Indoor room temperature sensor switching function
(Only for Wired remote controller)
The following settings are needed using the Wired remote controller temperature sensor
(¡... Factory setting)
Setting description
Function number Setting value
¡
No
42
00
Yes 01
* If setting value is “00”:
Room temperature is controlled by the indoor unit temperature sensor.
* If setting value is “01”:
Room temperature is controlled by either indoor unit temperature sensor or remote
controller unit sensor.
(7) Wireless remote controller signal code
Change the indoor unit Signal Code, depending on the wireless remote controllers.
(¡... Factory setting)
Setting description
Function number Setting value
¡
A
44
00
B 01
C 02
D 03
(8) External input control
“Operation/Stop” mode or “Forced stop” mode can be selected.
(¡... Factory setting)
Setting description
Function number Setting value
¡
Operation/Stop mode
46
00
(Setting forbidden) 01
Forced stop mode 02
Setting record
•
Record any changes to the settings in the following table.
Setting Setting Value
(1) Filter sign
(2) Ceiling height
(3) Cooling room temperature correction
(4) Heating room temperature correction
(5) Auto restart
(6) Indoor room temperature sensor switching function
(7) Wireless remote controller signal code
(8) External input control
After completing the FUNCTION SETTING, be sure to turn off the power and turn it on
again.
9.3. Selecting the remote controller signal 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 signal code
of the remote controller to operate only the air conditioner you wish to set (four selections
possible).
When two or more air conditioners are installed in a room, please contact your retailer to
set the individual air conditioner signal codes.
Confi rm the setting of the remote controller signal code and the printed circuit board setting.•
If these are not confi rmed, the
remote
controller cannot be used to operate for the air conditioner
.
Selecting the Remote Controller Signal Code
Use the following steps to select the signal code of the
remote controller. (Note that the air conditioner cannot
receive a signal code if the air conditioner has not
been set for the signal code.)
Press the START/STOP button until only the clock (1)
is displayed on the remote controller display.
Press the MODE button for at least 5 seconds to (2)
display the current signal code (initially set to
).
Press SET TEMP. ((3) ) ( ) button to change the
signal code between . Match the
code on the display to the air conditioner signal
code.
Press the MODE button again to return to the clock (4)
display. The signal code will be changed.
Function number
Setting value
En-11
If no buttons are pressed within 30 seconds after the signal code is displayed, the system returns to the original clock display. In this case, start again from step 1.
The air conditioner signal code is set to A prior to shipment.
Contact your retailer to change the signal code.
The remote controller resets to signal code A when the batteries in the remote controller
are replaced. If you use a signal code other than signal code A, reset the signal code
after replacing the batteries.
If you do not know the air conditioner signal code setting, try each of the signal codes
( ) until you fi nd the code which operates the air conditioner.
9.4. Special installation methods
This possible only the wired remote controller (Option)
CAUTION
When setting DIP switches, do not touch any other parts on the circuit board directly
with your bare hands.
Be sure to turn off the main power.
9.4.1. Simultaneous multi-system operation
By combining with an outdoor unit, 2 units for twin and 3 units for triple indoor units, can •
be switched ON/OFF simultaneously.
Wiring method(1)
Refer to 6.ELECTRICAL WIRING for wiring procedure and wiring method.•
The indoor unit is connected the outdoor unit using a transmission cable is “primary”.•
Connect the remote controller wire to the primary unit.•
Twin type ( 18, 22, 24 type only )
Outdoor
unit
Indoor
unit
1
Indoor
unit
2
Remote
controller
[primary]
[secondary]
Triple type ( 18type only )
Outdoor
unit
Remote
controller
: Transmission cable, Power supply cable : Power supply cable
: Bus wire: Remote controller cable
Indoor
unit
1
[primary]
Indoor
unit
2
[secondary]
Indoor
unit
3
[secondary]
Set the R.C. address (DIP switch setting )(2)
Set the R.C. address of each indoor unit using the DIP switches on the indoor unit
circuit board. (See the following table and fi gure.)
The DIP switches are normally set to make the R.C. address 00.
Indoor unit R.C. address DIP SWITCH No.
1234
1
00 OFF OFF OFF OFF
2
01 ON OFF OFF OFF
3
02 OFF ON OFF OFF
DIP switches
Example :
R.C. address 02
ON
Circuit board in the control box of indoor unit.
NOTE
Be sure to set the R.C. address sequentially.
Set the primary and secondary (Remote controller setting)(3)
Turn on all of the indoor units.1.
Set the “primary” and “secondary” settings.2.
(Set the indoor unit that is connected to the outdoor unit using a transmission cable
as the “primary”.)
Function Number
Setting Value
Primary
51
00
Secondary 01
After completing the function settings, turn off all of the indoor units, and then turn 3.
them back on.
If error code 21, 22, 24 or 27 is displayed, there may be an incorrect setting. *
Perform the remote controller setting again.
Twin type ( 18, 22, 24 type only )
00 01
00 01
R.C. address
Primary/Secondary setting
(DIP switch setting)
(Function number 51)
Out door
unit
Remote
controller
Indoor
unit
1
[primary]
Indoor
unit
2
[secondary]
Triple type ( 18type only )
00 01 02
00 01 01
R.C. address
Primary/Secondary setting
(DIP switch setting)
(Function number 51)
Out door
unit
Remote
controller
: Transmission cable, Power supply cable : Power supply cable
: Bus wire: Remote controller cable
Indoor
unit
1
[primary]
Indoor
unit
2
[secondary]
Indoor
unit
3
[secondary]
9.4.2. Group control system
CAUTION
Group control cannot be used when using it by the fl exible multi type.
A number of indoor units can be operated at the same time using a single remote controller.
(1) Wiring method (indoor unit to remote controller)
123
123
123 123 123
Indoor
unit 1
Bus wire
Remote
controller cable
Remote controller
When ground wire is necessary
Indoor
unit 2
Indoor
unit 3
Indoor
unit 4
En-12
Set the R.C. address (DIP switch setting) (2)
Set the R.C. address of each indoor unit using the DIP switches on the indoor unit
circuit board. (See the following table and fi gure.)
The DIP switches are normally set to make the R.C. address 00.
Indoor unit
R.C. address
DIP SWITCH No.
1234
①
00 OFF OFF OFF OFF
②
01 ON OFF OFF OFF
③
02 OFF ON OFF OFF
④
03 ON ON OFF OFF
⑤
04 OFF OFF ON OFF
⑥
05 ON OFF ON OFF
⑦
06 OFF ON ON OFF
⑧
07 ON ON ON OFF
⑨
08 OFF OFF OFF ON
⑩
09 ON OFF OFF ON
⑪
10 OFF ON OFF ON
⑫
11 ON ON OFF ON
⑬
12 OFF OFF ON ON
⑭
13 ON OFF ON ON
⑮
14 OFF ON ON ON
⑯
15 ON ON ON ON
NOTE
Be sure to set the R.C. address sequentially.
00 01 02 03
R.C. address
(DIP switch setting)
Remote
controller
: Transmission cable, Power supply cable : Power supply cable
: Bus wire: Remote controller cable
Outdoor
unit
1
Indoor
unit
1
Indoor
unit
2
Indoor
unit
3
Indoor
unit
4
Outdoor
unit
2
Outdoor
unit
3
Outdoor
unit
4
¡Settings when simultaneous Multi is included
Set the refrigerant circuit address (Remote controller setting)(3)
Turn on all of the indoor units.1.
* Turn on the indoor unit with the R.C. address 00 last.
(Within 1 minute)
Set the refrigerant circuit address.2.
Assign the same number to all of the indoor units connected to an outdoor unit.
(The unit is factory-set to “00”)
Refrigerant circuit address
Function Number Setting Value
00
02
00
〜
15
01
〜
14
15
Set the “primary” and “secondary” settings. (Remote controller setting)(4)
(Set the indoor unit that is connected to the outdoor unit using a transmission cable as the
“primary”.)
Function Number
Setting Value
Primary
51
00
Secondary 01
After completing the function settings, turn off all of the indoor units,
and then turn them back on.
* If error code 21, 22, 24, or 27 is displayed, there may be an incorrect
setting. Perform the remote controller setting again.
NOTE
When different indoor unit models are connected using the group control system, some •
functions may no longer be available.
If the group control system contains multiple units that are operated simultaneously, con-•
nect and set the units as shown below.
Auto-changeover operates under the same mode with model R.C. address 00.•
It should not be connected to any other Gr that is not of the same series (A**G only).•
R.C. address
Standard
pair
Standard
pair
Simultaneous
twin
Simultaneous
triple
Refrigerant circuit
address setting
Primary/Secondary setting
(DIP switch setting)
(Function number 02)
(Function number 51)
Remote
controller
: Transmission cable, Power supply cable : Power supply cable
: Bus wire: Remote controller cable
Outdoor
unit
1
Outdoor
unit
2
Outdoor
unit
3
Outdoor
unit
4
Indoor
unit
1
Indoor
unit
2
Indoor
unit
3
Indoor
unit
4
Indoor
unit
5
Indoor
unit
6
Indoor
unit
7
9.4.3. Dual remote controllers
2 separate remote controllers can be used to operate the indoor units.•
The timer and self-diagnosis functions cannot be used on the secondary unit of remote •
controller.
Wiring method (indoor unit to remote controller)(1)
1 231 23
1 2 3
Indoor unit
Secondary
unit
Primary unit
Remote controller cable
Remote
controller
Remote
controller
When ground wire
is necessary
Remote controller DIP switch 1 setting (2)
Set the remote controller DIP switch 1-No. 2 according to the following table.
DIP SW 1-No. 2
Primary unit OFF
Secondary unit ON
10. TEST RUN
CHECK ITEMS
Is operation of each button on the remote controller normal?(1)
Does each lamp light normally?(2)
Do not air fl ow direction louvers operate normally?(3)
Is the drain normal?(4)
Is there any error noise and vibration during operation?(5)
Do not operate the air conditioner in the running state for a long time.•
Test running•
When the air conditioner is run by pressing the remote controller test run button, the
OPERATION and TIMER Lamps fl ash slowly at the same time.
[Operation method]
For the operation method, refer to the operating •
manual.
The outdoor unit may not operate depending on the •
room temperature. In this case, press the TEST RUN
button on the remote controller while the air conditioner is running. (Point the transmitter section of
the remote controller toward the air conditioner and
press the TEST RUN button with the tip of a ballpoint
pen, etc.)
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 fl ash slowly.)
Transmitter section
TEST RUN button
En-13
[Using the wired remote controller] (Option)
For the operation method, refer to the operating manual.•
Stop the air conditioner operation.(1)
Press the MODE button and the FAN button simultane-(2)
ously for 2 seconds or more to start the test run.
Press the START/STOP button to stop the test run.(3)
If “C0” appears in the R.C. address display, there is a remote controller error. Refer to the
installation manual included with the remote controller.
R.C. address Error code Content
Incompatible indoor unit is connected
Indoor unit ↔ remote controller communication error
11. CHECK LIST
Pay special attention to the check items below when installing the indoor unit (s). After
installation is complete, be sure to check the following check items again.
CHECK ITEMS If not performed correctly CHECK BOX
Has the indoor unit been installed
correctly?
Vibration, noise, indoor unit
may drop
Has there been a check for gas
leaks (refrigerant pipes)?
No cooling, No heating
Has heat insulation work been
completed?
Water leakage
Does water drain easily from the
indoor units?
Water leakage
Are the wires and pipes all connected completely?
No operation, heat or burn
damage
Is the connection cable the specifi ed thickness?
No operation, heat or burn
damage
Are the inlets and outlets free of
any obstacles?
No cooling, No heating
After installation is completed,
has the proper operation and
handling been explained to the
user?
12. OPTIONAL KIT INSTALLATION (OPTION)
WARNING
Regulation of cable differs from each locality, refer in accordance with local rules.
This air conditioner can be connected with the following optional kits. Refer to each installation manual for the method of installing optional parts.
• Wired remote controller
• Simple remote controller
• External connect kit
12.1. Wired remote controller (Simple remote controller)
Please refer to [6. ELECTRICAL WIRING].
12.2. External input and external output
Connection methods
Wire modifi cation:
Use a tool to cut off the terminal on the end of the wire,
and then remove the insulation from the cut end of the
wire.
Connect the wire with connecting wire with solder.
Important:
Be sure to insulate the connection between the wires
.
External input terminal (CN102) External output terminal (CN103)
13. CUSTOMER GUIDANCE
Explain the following to the customer in accordance with the operating manual:
Starting and stopping method, operation switching, temperature adjustment, timer, air (1)
fl ow switching, and other remote controller unit operations.
Air fi lter removal and cleaning, and how to use the air louvers.(2)
Give the operating and Installation Manuals to the customer.(3)
If the signal code is changed, explain to the customer how it changed (the system (4)
returns to signal code A when the batteries in the remote controller unit are replaced).
*(4) is applicable to using wireless remote controller.
14. ERROR CODES
If you use a wired type remote controller, error codes will appear on the remote controller
display. If you use a wireless remote controller, the lamp on the photo detector unit will
output error codes by way of blinking patterns. See the lamp blinking patterns and error
codes in the table below.
Error display
Wired
remote
controller
Error code
Description
OPERATION
lamp
(green)
TIMER
lamp
(orange)
ECONOMY
lamp
(green)
●
(1)
●
(1)
◊
Serial communication error
●
(1)
●
(2)
◊
Wired remote controller communication error
●
(1)
●
(5)
◊
Check run unfi nished
●
(2)
●
(1)
◊
R.C. address or Refrigerant
circuit address setting error
[Simultaneous Multi]
●
(2)
●
(2)
◊
Indoor unit capacity error
●
(2)
●
(3)
◊
Combination error
●
(2)
●
(4)
◊
Connection R.C. address error •
(indoor secondary unit)
[Simultaneous Multi]
Connection R.C. address error •
(indoor unit or branch unit)
[Flexible Multi]
●
(2)
●
(7)
◊
Primary unit, secondary unit setup error [Simultaneous Multi]
●
(3)
●
(1)
◊
Power supply interruption error
●
(3)
●
(2)
◊
Indoor unit PCB model information error
●
(3)
●
(5)
◊
Manual auto switch error
●
(4)
●
(1)
◊
Room temp. sensor error
●
(4)
●
(2)
◊
Indoor unit Heat Ex. Middle
temp. sensor error
●
(5)
●
(1)
◊
Indoor unit fan motor error
●
(5)
●
(3)
◊
Drain pump error
●
(5)
●
(7)
◊
Damper error
●
(5)
●
(15)
◊
Indoor unit error
Option parts
External input/
output wire
Insulated
connection
Cable
(Field supply)
Test run display
En-14
●
(6)
●
(2)
◊
Outdoor unit main PCB model
information error or communication error
●
(6)
●
(3)
◊
Inverter error
●
(6)
●
(4)
◊
Active fi lter error, PFC circuit
error
●
(6)
●
(5)
◊
Trip terminal L error
●
(6)
●
(10)
◊
Display PCB microcomputers
communication error
●
(7)
●
(1)
◊
Discharge temp. sensor error
●
(7)
●
(2)
◊
Compressor temp. sensor error
●
(7)
●
(3)
◊
Outdoor unit Heat Ex. liquid
temp. sensor error
●
(7)
●
(4)
◊
Outdoor temp. sensor error
●
(7)
●
(5)
◊
Suction Gas temp. sensor error
●
(7)
●
(6)
◊
2-way valve temp. sensor error•
3-way valve temp. sensor error•
●
(7)
●
(7)
◊
Heat sink temp. sensor error
●
(8)
●
(2)
◊
Sub-cool Heat Ex. gas inlet •
temp. sensor error
Sub-cool Heat Ex. gas outlet •
temp. sensor error
●
(8)
●
(3)
◊
Liquid pipe temp. sensor error
●
(8)
●
(4)
◊
Current sensor error
●
(8)
●
(6)
◊
Discharge pressure sensor •
error
Suction pressure sensor error•
High pressure switch error•
●
(9)
●
(4)
◊
Trip detection
●
(9)
●
(5)
◊
Compressor rotor position detection error (permanent stop)
●
(9)
●
(7)
◊
Outdoor unit fan motor1 error
●
(9) ●(8)
◊
Outdoor unit fan motor 2 error
●
(9)
●
(9)
◊
4-way valve error
●
(9)
●
(10)
◊
Coil (expansion valve ) error
●
(10)
●
(1)
◊
Discharge temp. error
●
(10)
●
(3)
◊
Compressor temp. error
●
(10)
●
(4)
◊
High pressure error
●
(10)
●
(5)
◊
Low pressure error
●
(13)
●
(2)
◊
Branch boxes error
[Flexible Multi]
Display mode
●
: 0.5s ON / 0.5s OFF
◊
: 0.1s ON / 0.1s OFF
( ) : Number of fl ashing
Troubleshooting
[Troubleshooting with the indoor display]
Troubleshooting at the display is possible either on the wired or wireless remote controller.
OPERATION Lamp (green)
TIMER Lamp (orange)
ECONOMY Lamp (green)
[Troubleshooting at the remote controller LCD]
This is possible only on the wired remote controller.
[Self-diagnosis]
If an error occurs, the following display will be shown.
(“Er” will appear in the set room temperature display.)
Error code
R.C. address
EX. Self-diagnosis
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