General ABHA36LA, ABHA36LAT, ABHA45LA, ABHA45LAT Installation Manual

Ceiling Type

321

Good

Bad

3 2 1

INSTALLATION INSTRUCTION SHEET

(PART NO. 9374318216)

For authorized service personnel only.

DANGER

WARNING

CAUTION

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

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

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

installation and service tools are special. (See the table below.) Especially, when replacing a conventional refrigerant model with a new refrigerant R410A model, always replace the conventional piping and flare nuts with the R410A piping and flare nuts.

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

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

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

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

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

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

Special tools for R410A

Tool name

Gauge manifold

Charge hose

Vacuum pump

Gas leakage detector

Copper pipes

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

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

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

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

DANGER

This air conditioner uses new refrigerant HFC (R410A).

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

3.8 MPa (–76 cmHg to 38 kgf/cm 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. Special gas leakage detector for HFC refrigerant R410A.

) for low pressure.

Contents of change

) for high pressure. –0.1 to

Thicknesses of Annealed Copper Pipes (R410A)

Pipe outside diameter

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

Thickness

0.80 mm

1.00 mm

1.20 mm

STANDARD PARTS

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

INDOOR UNIT ACCESSORIES

Name and Shape

Drain hose insulation

VT wire

Coupler heat insulator (large)

Coupler heat insulator (small)

Nylon fastener

Special nut A (large flange)

Special nut B (small flange)

Installation template

Auxiliary pipe assembly

Remote control unit

Battery (penlight)

Remote control unit holder

Tapping screw (ø3 × 12)

Q’ty

Large

Small

Application

Adhesive type 70 × 230

For fixing the drain hose L 280 mm

For indoor side pipe joint (Gas pipe)

For indoor side pipe joint (Liquid pipe)

For fixing the coupler heat insulator

For installing indoor unit

For positioning the indoor unit

For connecting the piping

Use for air conditioner operation

For remote control unit

Use as remote control unit holder

For remote control unit holder installation

OPTIONAL PARTS

The following options are available.

••

• DRAIN PUMP UNIT: UTR-DPB241 (P/N 9034087001)

••

• ROUND DUCT: UTD-RF204 (P/N 9093160004)

••

• WIRED REMOTE CONTROLLER: UTB–*UD

••

INSTALLATION PROCEDURE

REMOVE THE INTAKE GRILLE AND SIDE COVER

(1) Remove the two Air filters. (2) Remove the two Intake grilles.

(3) Remove the Side cover A (Right side) and Side cover B (Right and

(4) This air conditioner can be set up to intake fresh air. For information

Tapping screw

You can use the accessory template to help you install the indoor unit. The template helps you determine the appropriate locations for suspension bolts and pipe opening (drain pipe and connection cord).

1. LOCATION OF CEILING SUSPENSION BOLTS

PREPARING INDOOR UNIT

INSTALLATION

• For 4 Left rear drain and 5 Left drain: Remove air filters and intake

grilles at three places. (Refer to “2 INDOOR UNIT INSTALLATION”.)

Left side).

• For 5 Left drain: Remove both the Side cover A (Right and Left

side). (Refer to “2 INDOOR UNIT INSTALLATION”.)

about how to install for fresh-air intake, refer to “9 FRESH-AIR INTAKE”.

Air filter

Intake grille

INDOOR UNIT

Side cover B

(Left side)

Side cover A (Right side)

Side cover B (Right side)

INDOOR UNIT INSTALLATION

Drilling position for Suspension bolt

Ceiling

Wall

Template

30 mm Suspension bolt pitch 1600 mm

INDOOR UNIT (TOP VIEW)

INDOOR UNIT

Drilling position for piping

Suspension bolt should extend outward 30 to 75 mm.

30 mm Dimensions (Space Required for Installation)

10 mm 155 mm

300 mm

[For Half-Concealed Installation]

••

• Suspension-bolt pitch should be as shown in the figure.

••

40 mm Ceiling Opening: 1580 mm 40 mm

Ceiling panel

Ceiling Opening: 640 mm

INDOOR UNIT

15 mm

Ceiling panel

Suspension bolt should extend outward 30 to 50 mm.

2. SELECT PIPING DIRECTION

Select connection piping and drain piping directions.

5 Left piping

(Drain pipe only)

4 Left rear piping

(Drain pipe only)

INDOOR UNIT (TOP VIEW)

2 Top piping

(Connection pipe only)

1 Right rear piping

Cut off the piping outlet cutting groove with a hacksaw, etc.

[FOR 4 Left rear piping, 5 Left piping]

••

• Transfer the Drain cap and Drain cap seal.

••

Drain cap seal

Drain cap

Indoor unit Drain pan

Push cap all the way on (as far as it will go).

Drain cap seal

Drain cap

3. DRILLING THE HOLES AND ATTACHING THE SUSPENSION BOLTS

(1) Drill ø25 mm holes at the suspension-bolt locations. (2) Install the bolts, then temporarily attach Special nuts A and B and a

normal M10 nut to each bolt. (The two special nuts are provided with the unit. The M10 nut must be obtained locally.) Refer to the figure.

Bolt Strength 980 to 1470 N (100 to 150 kgf)

Ceiling panel

10 to 15 mm

Special nut A (Included)

Special nut B (Included)

M10 Nut (Obtained locally)

3 Right

piping

4. INSTALLING THE INDOOR UNIT

(1) Lift unit so that suspension bolts pass through the suspension fittings

at the sides (four places), and slide the unit back.

Ceiling

Wall

Ceiling panel

Wall

INDOOR UNIT

(2) Fasten the indoor unit into place by tightening-up the special “B” bolts

and the M10 nuts. Make sure that unit is secure and will not shift back and forth.

[For Half-Concealed Installation]

When installing the indoor unit in a semi-concealed orientation, make sure to reinforce the insulation of the unit on all sides. Drops of water may fall from the unit if it is not thoroughly insulated.

Glass wool insulate (10 to 20 mm thick)

INDOOR UNIT

(Top view)

Wall

Ceiling panel

CAUTION

In order to check the drainage, be sure to use a level during installation of the indoor unit. If the installation site of the indoor unit is not level, water leakage may occur.

5. DRAIN PIPING

CAUTION

Install the drain pipe in accordance with the instructions in this installation instruction sheet and keep the area warm enough to prevent condensation. Problems with the piping may lead to water leaks.

••

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

••

there are no rises or traps in the pipe.

••

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

••

38 mm].

••

• During installation of the drain pipe, be careful to avoid applying

••

pressure to the drain port of the indoor unit.

••

• When the pipe is long, install supporters.

••

• Do not perform air bleeding.

••

• Always heat insulate (8 mm or over thick) the indoor side of the drain

••

pipe.

Drain pipe

Arrange the drain pipe lower than this portion.

Lifted up

Wave

End in water

Supporter

(1) Install insulation for the drain pipe.

Cut the included insulation material to an appropriate size and adhere it to the pipe.

Indoor unit (drain port)

Indoor unit

(2) If “1 Right rear piping” : fasten the drain pipe with VT wire so that the

pipe slopes correctly within the indoor unit.

Indoor unit (rear view)

(3) If the drain hose will not be connected to the right rear piping, cut the

hole cover at the points indicated in Fig. (a), and attach it to the piping hole as shown in Fig. (b).

(a)

Cut x 5

(b)

1.5 to 2 m

Insulation for drain pipe (To be obtained locally. Length should be at least 8 mm.)

Drain pipe insulation (accessories)

Drain pipe insulation

No gap

10 mm or over

VT wire

Drain pipe

Drain hose

Hole cover

CONNECTING THE PIPE

CAUTION

1 Do not use mineral oil on flared part. Prevent mineral

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

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

gas through them.

1. FLARING

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

remove the burrs.

(3) Insert the flare nut (always use the flare nut attached to the indoor

and outdoor units respectively) onto the pipe and perform the flare processing with a flare tool. Use the special R410A flare tool, or the conventional flare tool.

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

Die

Pipe

Pipe outside diameter

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

Pipe outside diameter

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

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

Width across flats

Pipe outside

diameter

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

Dimension A

Flare tool for R410A, clutch type

0 to 0.5

Dimension B

9.1

13.2

16.6

19.7

24.0

Width across flats

of Flare nut

17 mm

22 mm

26 mm

29 mm

36 mm

(mm)

-0.4

CONNECTION PIPE REQUIREMENT

CAUTION

The maximum/minimum lengths of this product, refer to the installation instruction sheet supplied with the outdoor unit. If the units are further apart than this, correct operation can not be guaranteed.

Diameter

Liquid

9.52 mm (3/8 in.)

••

• Use pipe with water-resistant heat insulation.

••

Gas

15.88 mm (5/8 in.)

CAUTION

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

ELECTRICAL REQUIREMENT

••

• Electric wire size:

••

Connection cord (mm )

MAX.

2.5

••

• Use conformed cord with Type 245 IEC57.

••

• Install all electrical works in accordance to the standard.

••

• Install the disconnect device with a contact gap of at least 3 mm in all poles nearby the units. (Both indoor unit and outdoor unit)

••

MIN.

1.5

SELECTING THE MOUNTING POSITION

Decide the mounting position with the customer as follows:

WARNING

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

CAUTION

1 Do not install where there is the danger of combustible gas leakage.

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

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

INDOOR UNIT

(1) Install the indoor unit level on a strong wall which is not subject to vibration. (2) The inlet and outlet ports should not be obstructed : the air should be able to blow all over the room. (3) Do not install the unit where it will be exposed to direct sunlight. (4) Install the unit where connection to the outdoor unit is easy. (5) Install the unit where the drain pipe can be easily installed. (6) Take servicing, etc., into consideration and leave the spaces shown in the figure. Also install the unit where the filter can be removed.

[FOR HALF CONCEALED INSTALLATION]

Ceiling panel

INDOOR UNIT

80 or over 150 or over

Ceiling panel

2300 or over

10 or over

1000 or over

Obstruction

Floor

80 or over

Ceiling

INDOOR UNIT

Ceiling

2300 or over

Obstruction

Floor

(Unit : mm)

150 or over

10 or over

1000 or over

2. BENDING PIPES

The pipes are shaped by your hands. Be careful not to collapse them. Do not bend the pipes in an angle more than 90°. When pipes are repeatedly bend or stretched, the material will harden, making it difficult to bend or stretch them any more. Do not bend or stretch the pipes more than three times.

CAUTION

1 To prevent breaking of the pipe, avoid sharp bends.

Bend the pipe with a radius of curvature of 150 mm or over.

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

break.

3. CONNECTION PIPES

Indoor unit

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

CAUTION

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

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

2 Do not remove the flare nut from the indoor unit pipe

until immediately before connecting the connection pipe.

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

with your hand.

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

(3) Remove the filter guide.

Indoor unit

(4) Attach the connection pipe.

Indoor unit

Filter guide

Connection pipe (Gas)

Connection pipe (Liquid)

• For 2 Top piping and 3 Right piping connections, use the Auxi-

liary pipe (Gas pipe) provided.

2 Top piping

Connection pipe (Gas)

Indoor unit (rear)

Connection pipe (Gas)

3 Right piping

(5) When the flare nut is tightened properly by your hand, use a torque

wrench to finally tighten it.

Body side

Auxiliary pipe (Gas pipe)

Holding spanner

Torque wrench

CAUTION

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

Flare nut Tightening torque

6.35 mm (1/4 in.) dia.

9.52 mm (3/8 in.) dia.

12.70 mm (1/2 in.) dia.

15.88 mm (5/8 in.) dia.

19.05 mm (3/4 in.) dia.

16 to 18 N·m (160 to 180 kgf·cm)

30 to 42 N·m (300 to 420 kgf·cm)

49 to 61 N·m (490 to 610 kgf·cm)

63 to 75 N·m (630 to 750 kgf·cm)

90 to 110 N·m (900 to 1100 kgf·cm)

4. HEAT INSULATION ON THE PIPE JOINTS (INDOOR SIDE ONLY)

After checking for gas leaks, insulate by wrapping insulation around the two parts (Gas and Liquid) of the indoor unit coupling, using the coupler heat insulation. After installing the coupler heat insulation, wrap both ends with vinyl tape so that there is no gap. Secure both ends of the heat insulation material using nylon fasteners. And finally fix connection pipe (Liquid) to connection pipe (Gas) by rolling vinyl tape over coupler heat insulation (Gas) and coupler heat insulation (Liquid).

Coupler heat insulation (Large)

Indoor unit

Coupler heat insulation (Small)

Indoor unit

• When using an auxiliary pipe, make sure that the fastener used is insulated in the same way.

There should be no gaps between the insulation and the product.

Connection pipe (Gas)

Connection pipe (Liquid)

Nylon fastener (Large)

Nylon fastener (Small)

Connection pipe (Gas)

Connection pipe (Liquid)

Vinyl tape

CAUTION

No gap

Coupler heat insulation

ELECTRICAL WIRING

WARNING

1 Before starting work, check that power is not being

supplied to the indoor unit and outdoor unit.

2 Match the terminal board numbers and connection

cord colors with those of the outdoor unit. Erroneous wiring may cause burning of the electric parts.

3 Connect the connection cords firmly to the terminal

board. Imperfect installation may cause a fire.

4 Always fasten the outside covering of the connection

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

5 Always connect the ground wire.

6 Install the remote controller wires so as not to be di-

rect touched with your hand.

HOW TO CONNECT WIRING TO THE TERMINALS For strand wiring

(1) Use crimp-type terminals with insulating sleeves as shown in the

figure below to connect to the terminal block.

(2) Securely crimp the crimp-type terminals to the wires using an ap-

propriate tool so that the wires do not come loose.

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

so that there is no stress placed on the terminals.

(4) Use an appropriate screwdriver to tighten the terminal screws.

Do not use a screwdriver that is too small, otherwise, the screw heads may be damaged and prevent the screws from being properly tightened.

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

may break.

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

Crimp-type terminal

Strip 10 mm

Sleeve

Screw with special washer

Wire

Crimp-type terminal

Terminal board

Terminal block

M4 screw 1.2 to 1.8 N·m (12 to 18 kgf·cm)

Wire

Tighting torque

WARNING

Use crimp-type terminals and tighten the terminal screws to the specified torques, otherwise, abnormal overheating may be produced and possibly cause heavy damage inside the unit.

Screw with special washer

Crimp-type terminal

1. CONNECTION DIAGRAMS

Connection cord (to outdoor unit)

Control line

Power line

Indoor unit

side

Wired remote controller cord (option)

Black

White

Red

Indoor unit

side

Ground the remote controller ip it has a ground wire

2. CONNECTION CORD PREPARATION

Keep the earth wire longer than the other wires.

30 mm

Earth wire

40 mm or more

• Use a 4-core wire cord.

Power supply cord or connection cord

3. INDOOR UNIT

CAUTION

Use care not to mistake the power supply cord and connection wires when installing.

(1) Remove the two tapping screws and pull the control box downward.

Indoor unit

Control box

Tapping screw

(2) Remove the Cover A and install the Connection cord. (3) Reattach Cover A. Then fasten the control box back into its original

position using the two tapping screws.

Control box

Cover A

(4) After wiring is complete, clamp the Connection cord with the Cord

clamp.

(5) Attach the connection cord and cable clips. Make sure that they are

positioned so that they will not interfere with opening and closing of the intake grille or with removal and installation of the air filters.

Powe r

Remote

Connection cord (To outdoor unit)

Wired remote controller cord (Option)

Cable clip

Connection cord

Wired remote controller cord

- Continued on back -

SUMOTUWETH FR

3 4

1 2

123

123 123 123

REMOTE CONTROLLER

SETTING

1. LOAD BATTERIES (R03/LR03

1 Press and slide the battery compartment lid on the reverse side to

open it. Slide in the direction of the arrow while pressing the

2 Insert batteries.

Be sure to align the battery polarities (

3 Close the battery compartment lid.

CAUTION

1 Take care to prevent infants from accidentally

swallowing batteries.

2 When not using the Remote Control Unit for an

extended period, remove the batteries to avoid possible leakage and damage to the unit.

3 If leaking battery fluid comes in contact with your skin,

eyes, or mouth, immediately wash with copious amounts of water, and consult your physician.

4 Dead batteries should be removed immediately and

disposed of properly, either in a battery collection receptacle or to the appropriate authority.

5 Do not attempt to recharge dry batteries.

NOTES

• Never mix new and used batteries, or batteries of different types.

• Batteries should last about one year under normal use. If the Remote Control Unit’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.

2. REMOTE CONTROL UNIT HOLDER INSTALLA-

TION

CAUTION

1 Check that the indoor unit correctly receives the sig-

nal from the remote control unit, then install the remote control unit holder.

2 Select the remote control unit 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 control unit with a distance of 7 m between the remote control unit and the photocell as the criteria. However, when installing the remote control unit, check that it operates positively.

• Install the remote control unit holder to a wall, pillar, etc. with the tapping screw.

××

× 2)

××

) correctly.

mark.

1 Mount the Holder.

Screws

2 Set the Remote Control Unit.

Insert

Press in

3 To remove the Remote Control Unit (when use at hand).

Slide up

Pull out

• This procedure changes to the function settings used to control the indoor unit according to the installation conditions. Incorrect settings can cause the indoor unit malfunction.

• After the power is turned on, perform the “FUNCTION SETTING” according to the installation conditions using the remote controller.

• The settings may be selected between the following two: Function Number or Setting Value.

• Settings will not be changed if invalid numbers or setting values are selected.

FUNCTION SETTING

Entering the Function Setting Mode

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

STEP 1

Selecting the Remote Control Unit Signal Code

Use the following steps to select the signal code of the remote control unit. (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 SELECTING THE REMOTE CONTROL UNIT SIGNAL CODE.

1 Press the SET TEMP. (

between .

Match the code on the 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.)

2 Press the TIMER MODE button and check that the indoor unit can

receive signals at the displayed signal code.

3 Press the MODE button to accept the signal code, and proceed to

STEP 2.

) ( ) button to change the signal code

The air conditioner signal code is set to A prior to shipment. Contact your retailer to change the signal code.

The remote control unit resets to signal code A when the batteries in the remote control unit 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 ( operates the air conditioner.

) until you find the code which

STEP 2

Selecting the Function Number and Setting Value

1 Press the SET TEMP. ( ) ( ) buttons to select the function number.

(Press the MODE button to switch between the left and right digits.)

2 Press the FAN button to proceed to setting the value.

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

3 Press the SET TEMP. (

(Press the MODE button to switch between the left and right digits.)

4 Press the TIMER MODE button, and START/STOP button, in the

order listed to confirm the settings.

5 Press the RESET button to cancel the function setting mode. 6 After completing the FUNCTION SETTING, be sure to turn off the

power and turn it on again.

Function number

After turning off the power, wait 10 seconds or more before turning on it again. The FUNCTION SETTING doesn’t become effective if it doesn’t do so.

) ( ) buttons to select the setting value.

Setting value

CAUTION

Setting the Ceiling Height

• Select the setting values in the table below according to the height of the ceiling. (The unit is factory-set to “00”.)

Setting Description

Standard

(2.3 m to 3.0 m)

High ceiling

(3.0 m or more)

Function Number

Setting Value

Setting the Filter Sign

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

• Select the time setting for the filter sign display interval in the table below according to the amount of dust or debris in the room. (The unit is factory-set to “00”.)

• If you do not wish the filter sign to be displayed, select the setting value for “No indication”.

Setting Description

Standard

(2,500 hours)

Long interval

(4,400 hours)

Short interval (1,250 hours)

No indication

Function Number

Setting Value

Setting the Cooler Room Temperature Correction

• Depending on the installed environment, the room temperature sensor may require a correction. The settings may be selected as shown in the table below. (The unit is factory-set to “00”.)

Setting Description

Standard

Lower control

Function Number

Setting Value

Setting the Heater Room Temperature Correction

• Depending on the installed environment, the room temperature sensor may require a correction. The settings may be changed as shown in the table below. (The unit is factory-set to “00”.)

Setting Description

Standard

Lower control

Slightly warmer control

Warmer control

Function Number

Setting Value

Setting Other Functions

• The following settings are also possible, depending on the operating conditions. (The unit is factory-set to “00”.)

Auto Restart

Setting Description

Ye s

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

Setting Description

Ye s

• 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 control unit sensor.

Function Number

Setting Value

Setting record

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

Setting

Ceiling height

Filter sign

Cooler room temperature correction

Heater room temperature correction

Auto restart

Indoor room temperature sensor switching function

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

Setting Value

SELECTING THE REMOTE

CONTROL UNIT SIGNAL CODE

When two or more air conditioners are installed in a room and the remote control unit is operating an air conditioner other than the one you wish to set, change the signal code of the remote control unit 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.

• Confirm the setting of the remote control unit signal code and the printed circuit board setting. If these are not confirmed, the remote control unit cannot be used to operate for the air conditioner.

Selecting the Remote Control Unit Signal Code

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

1 Press the START/STOP button until only the clock is displayed on the

remote control unit display.

2 Press the MODE button for at least five seconds to display the current

signal code (initially set to

3 Press the SET TEMP. (

between .

Match the code on the display to the air conditioner signal code.

4 Press the MODE button again to return to the clock display. The signal

code will be changed.

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.

of the signal codes ( operates the air conditioner.

) ( ) button to change the signal code

) until you find the code which

Indoor unit setting

Jumper wire

JM1

Connect

Disconnect

Connect

Disconnect

Connect

Disconnect

JM2

Remote control unit

signal code

A (Primary setting)

Indoor unit Printed circuit board

TEST RUN

CHECK ITEMS

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

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

• Test running

When the air conditioner is run by pressing the remote control unit test run button, the OPERATION and TIMER lamps flash 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 control unit while the air conditioner is running. (Point the transmitter section of the remote control unit toward the air conditioner and press the test run button with the tip of a ball-point pen, etc.)

Transmitter section

Test run button

•

To end test operation, press the remote control unit START/STOP button. (When the air conditioner is run by pressing the test run button, the OPERATION indicator lamp and TIMER indicator lamp will simultaneously flash slowly.)

[Using the wired remote control] (Option)

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

(1) Stop the air conditioner operation. (2) Press the master control button and the fan control button simulta-

neously for 2 seconds or more to start the test run.

Test run display

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

Troubleshooting

(Troubleshooting with the indoor display) Troubleshooting at the display is possible either on the wired or wireless remote control.

FILTER lamp (Orange)

TIMER lamp (Green)

OPERATION lamp (Red)

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

Error contents

Indoor signal error

Wired remote controller abnormal

Indoor room temperature sensor error

Indoor heat exchanger temperature sensor (middle) error

Indoor heat exchanger temperature sensor (inlet) error

Float switch operated

Outdoor discharge pipe temperature sensor error

Outdoor heat exchanger temperature sensor (outlet) error

Outdoor temperature sensor error

Heatsink thermistor error

Compressor temperature sensor error

2-way valve temperature sensor error

3-way valve temperature sensor error

Outdoor heat exchanger temperature sensor (middle) error

Indoor manual auto switch abnormal

Power supply frequency detection error

IPM protection

CT error

Compressor location error

Outdoor fan error

Connected indoor unit abnormal

Outdoor unit computer communication error

Indoor fan abnormal

Discharge temperature error

Excessive high pressure protection on cooling

4-way valve abnormal

Pressure switch abnormal

Compressor temperature error

Active filter abnormal

PFC circuit error

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

OPERATION

lamp (RED)

(2 times)

(3 times)

(4 times)

(5 times)

(6 times)

(7 times)

(8 times)

TIMER lamp

(8 times)

(2 times)

(3 times)

(4 times)

(6 times)

(2 times)

(3 times)

(4 times)

(7 times)

(8 times)

(2 times)

(4 times)

(2 times)

(3 times)

(5 times)

(6 times)

(7 times)

(8 times)

(2 or 3 times)

(2 times)

(3 times)

(4 times)

(5 times)

(6 times)

(2 or 3 times)

(4 times)

(GREEN)

FILTER lamp

(ORANGE)

(2 times)

(3 times)

(4 times)

[Troubleshooting at the remote control LCD]

This possible only on the wired remote control. (Option)

[SELF-DIAGNOSIS]

This possible only on the wired remote control. (Option) If an error occurs, the following display will be shown. (“EE” will appear in the set room temperature display.)

Unit number

Error code

Ex. Self-diagnosis

Error code Error contents

01 13 26 27 00 02

09 0C

0A 0E 15 1d 1E

20 2A 17 18 1A 1b 1F 1c 12 0F 24 2c 16 2b 19 25

If “CO” appears in the unit number display, there is a remote controller error.

Unit number

Indoor signal error

Wired remote controller abnormal

Indoor room temperature sensor error

Indoor heat exchanger temperature sensor (middle) error

Indoor heat exchanger temperature sensor (inlet) error

Float switch operated

Outdoor discharge pipe temperature sensor error

Outdoor heat exchanger temperature sensor (outlet) error

Outdoor temperature sensor error

Heatsink thermistor error

Compressor temperature sensor error

2-way valve temperature sensor error

3-way valve temperature sensor error

Outdoor heat exchanger temperature sensor (middle) error

Indoor manual auto switch abnormal

Power supply frequency detection error

IPM protection

CT error

Compressor location error

Outdoor fan error

Connected indoor unit abnormal

Outdoor unit computer communication error

Indoor fan abnormal

Discharge temperature error

Excessive high pressure protection on cooling

4-way valve abnormal

Pressure switch abnormal

Compressor temperature error

Active filter abnormal

PFC circuit error

Error code

Incompatible indoor unit is connected

Indoor unit ↔ remote controller communication error

Content

(1) Open up the knockout hole for the fresh-air intake, as shown in the

figure. (If using half-concealed installation, open up the top knockout hole instead.)

FRESH-AIR INTAKE

For half concealed installation

Indoor unit

CAUTION

1 When removing the cabinet (iron plate), be careful

not to damage the indoor unit internal parts and surrounding area (outer case).

2 When processing the cabinet (iron plate), be careful

not to injure yourself with burrs, etc.

(2) Fasten the round flange (optional) to the fresh-air intake, as shown in

the figure. (If using half-concealed installation, attach to the top.)

Round duct (option parts)

[After completing “2 INDOOR UNIT INSTALLATION”...]

(3) Connect the duct to the round flange.

(4) Seal with a band and vinyl tape, etc. so that air does not leak from the

connection.

Duct

SPECIAL INSTALLATION

METHODS

CAUTION

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

on the circuit board directly with your bare hands.

2 Be sure to turn off the main power.

1. GROUP CONTROL SYSTEM

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

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

Remote controller cord

Remote controller

When ground wire is necessary

(2) DIP switch setting (indoor unit)

Set the unit number of each indoor unit using DIP switch on the indoor unit circuit board. (See following table and figure.) DIP switch is normally set to make unit number No. 0.

Indoor unit

Unit number DIP SWITCH No.

Example : No. 3

OFF

Bus wire

OFF

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

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

adjustment, timer, air flow switching, and other remote control unit

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

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

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

CUSTOMER GUIDANCE

PART NO. 9374318216