General ABHF18LA, ABHF18LAT, AOHA18LALL, ABHF24LA, ABHF24LAT Installation Manual

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Floor Console/Under Ceiling Dual Type

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INSTALLATION INSTRUCTION SHEET

(PART NO. 9374318346)

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

WARNING

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

2 Connect the indoor unit and outdoor unit with the air conditioner piping and cords available from our standards parts. This instal-

lation instruction sheet describes the correct connections using the installation set available from our standard parts.

3 Installation work must be performed in accordance with national wiring standards by authorized personnel only.

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

CAUTION

This installation instruction sheet describes how to the indoor unit only. To install the outdoor unit, refer to the installation instruction sheet included with the outdoor unit.

••

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

••

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

••

• Let the customer keep this installation instruction sheet because it is used when the air conditioner is serviced or moved.

••

CONNECTION PIPE REQUIREMENT

CAUTION

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

MODEL

Diameter

••

• Use pipe with water-resistant heat insulation.

••

Liquid

Gas

14,000, 18,000 24,000

BTU/h model BTU/h model

6.35 mm (1/4 in.) 6.35 mm (1/4 in.)

12.70 mm (1/2 in.) 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

Connection cord (mm2)

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

INSTALLATION PROCEDURE

Install the room air conditioner as follows:

1. REMOVE THE INTAKE GRILLE

Open the intake grille and remove the three screws.

Remark: The main unit can be wired before the indoor unit is in-

A. FLOOR CONSOLE TYPE

1. DRILLING FOR PIPING

Select piping and drain directions. The piping and drain can be made in three directions as shown below.

For direction , bore the oval hole shown in the above figure.

The drain hose can be connected to either the left or right side.

When the directions are selected, drill a 10 cm (4") dia. hole on the wall so that the hole is tilted downward toward the outdoor for smooth water flow. When the pipe is led out from the rear, make a hole as shown in the figure, at the position shown.

PREPARING INDOOR UNIT

INSTALLATION

Machine screw

Tapping screw

Intake grille

stalled. Select the most appropriate installation order.

Tapping screw

INDOOR UNIT INSTALLATION

VIEW

Drain hose (Left side)

Wall

100 mm (4")

Indoor side

6 mm (1/4")

Outdoor side

Drain hose (Right side)

Hole

When installing set to wall install the accessory wall bracket at the position as shown in the figure, and mount the set to it.

65.5 cm (26") 53 cm (21")

4.5 cm (1-3/4")

99 cm (39")

50 cm (20")

6.5 cm (2-1/2")

10 cm (4") hole

5 cm (2") hole

12.5 cm (5") 10 cm (4")

24.5 cm 9-5/8"

(

)

Wall bracket

Side of set

6.5 cm (2-1/2")

2. INSTALLING THE DRAIN HOSE

Select whether the drain hose will be connected to the left or right side. Insert the drain hose into the drain pan, then secure the drain hose with a nylon fastener.

Drain pan

Nylon fastener

Drain hose

Wrap the insulation (drain hose) around the drain hose connection.

Drain pan

Insulation (Drain hose)

Drain hose

Be sure to arrange the drain hose so that it is leveled lower than the drain hose connecting port of the indoor unit.

Arrange the drain hose lower than this portion.

Do not install the unit so that the drain hose side is too high. Height A should be less than 5 mm.

Drain hose

CAUTION

Drain hose

B. UNDER CEILING TYPE

Using the installation template, drill holes for piping and anchor bolts (for holes).

900 mm (35-7/16")

Drilling position

200 mm (7-7/8")

Installation template

Drilling position for piping

1. DRILLING FOR PIPING

Select piping and drain directions.

Top

Rear (Install the drain hose in this direction.)

Right

Hole

For direction , bore the oval hole shown in the above figure.

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 (3-1/8") and 50 mm (2") or 150 mm (6") dia. hole on the wall so that the hole is tilted downward toward the outdoor for smooth water flow.

Wall

6 mm (1/4")

Indoor side Outdoor side

2. DRILLING HOLES FOR ANCHOR BOLTS AND INSTALLING THE ANCHOR BOLTS

With a concrete drill, drill four 12.7 mm (1/2") dia. holes.

ø12.7 mm (1/2")

Insert the anchor bolts into the drilled holes, and drive the pins completely into the anchor bolts with a hammer.

for anchor bolt

Ceiling

Wall

VIEW

60 to 70 mm

(2-3/8" to 2-3/4")

3. INSTALLING BRACKETS

Install the brackets with nuts, washers and spring washers.

Bracket (Left)

Spring washer

Special nut

Bracket

Bracket (Right)

4. INSTALLING INDOOR UNIT

Reset the hex bolts as shown in the figure.

Hex bolt

Indoor unit

Apply the indoor unit to the brackets.

Bolt

Indoor unit

Now, securely tighten the hex bolts in both sides.

8 to 13 mm (5/16" to 1/2")

Bracket

5. INSTALLING THE DRAIN HOSE

Select whether the drain hose will be connected to the left or right side. Insert the drain hose into the drain pan, then secure the drain hose with a nylon fastener. Wrap the insulation (drain hose) around the drain hose connection. Be sure to arrange the drain hose so that it is leveled lower than the drain hose connecting port of the indoor unit.

Remove the hole cover.

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.

Cut the grille

Drain hose

Base (Bottom)

Intake grille

VT wire

Drain hose

STANDARD PARTS

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

INDOOR UNIT ACCESSORIES

Name and Shape

Cover plate (left)

Cover plate (right)

Tapping screw (ø4 × 10)

Installation template

Bracket (left)

Bracket (right)

Anchor bolt (M12)

Spring washer

Special nut

Wall bracket

Tapping screw (ø4 × 20)

Coupler heat insulator (large)

Coupler heat insulator (small)

Q’ty

Application

For positioning the indoor unit For under ceiling type

For suspending the indoor unit from ceiling

For suspending the indoor unit on the wall

For fixing the wall bracket

For indoor side pipe joint (Large pipe)

For indoor side pipe joint (Small pipe)

Name and Shape

Drain hose

Insulation (drain hose)

VT wire

Remote control unit

Battery (penlight)

Remote control unit holder

Tapping screw (ø3 × 12)

Q’ty

Adhesive type 70 × 230

For fixing the drain hose

L 280 mm

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.

• WIRED REMOTE CONTROLLER: UTB–*UD

Application

SELECTING THE MOUNTING POSITION

WARNING

Install at a place that can withstand the weight of the indoor and outdoor units and install positively so that the units will not topple or fall.

CAUTION

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

2 Do not install near heat sources.

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

Decide the mounting position with the customer as follows:

INDOOR UNIT

(1) Install the indoor unit level on a strong wall, floor, ceiling which is not subject to vibration. (2) The inlet and outlet ports should not be obstructed : the air should be able to blow all over the room. (3) Install the unit near an electric outlet or special branch circuit. (4) Do not install the unit where it will be exposed to direct sunlight. (5) Install the unit where connection to the outdoor unit is easy. (6) Install the unit where the drain pipe can be easily installed. (7) Take servicing, etc., into consideration and leave the spaces as shown in the figure. Also install the unit where the filter can be removed.

••

• Floor console

••

30 cm (12") or more 30 cm (12") or more

Floor console

Indoor unit

Left

Right

To outdoor unit

••

• Under ceiling

••

Left

15 cm (6") or more 30 cm (12") or more

Ceiling

Indoor unit

Ceiling

230 cm (90-1/2")

or more

Floor

2 cm (3/4") or more

Under ceiling

Indoor unit

Right

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.

3 The maximum lengths of this product are shown in the

table. If the units are further apart than this, correct operation can not be guaranteed.

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

Dimension B

Width across flats

(mm)

0 to 0.5

(mm)

-0.4

9.1

13.2

16.6

19.7

24.0

of Flare nut

17 mm

22 mm

26 mm

29 mm

36 mm

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.

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.

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

Be sure to connect the gas pipe after connecting the

Flare nut tightening torque

Flare nut Tightening torque

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)

CAUTION

BARRIER AND RFM BASE

REMOVAL

BARRIER AND RFM BASE REMOVAL AND INSTALLATION

(1) Remove the barriers by removing the 4 fixing screws (2 screws each). (2) Remove the RFM base by removing the 2 fixing screws and unhooking

the 1 hook.

(3) After completing the work, install the barriers and RFM base as they

were originally.

liquid pipe completely.

3. CONNECTION PIPES

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

with your hand. Be 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 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) Install the outdoor unit wall cap (supplied with the optional installation

set or procured at the site) to the wall hole pipe. (3) Connect the outdoor unit and indoor unit piping. (4) After matching the center of the flare surface and tightening the nut

hand tight, tighten the nut to the specified tightening torque with a

torque wrench.

Tighten with two wrenches.

Wrench (fixed)

Torque wrench

Indoor unit pipe

Flare nut

Connection pipe

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

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

Put coupler heat insulator on the joints (indoor side only).

Indoor unit

No gap

Coupler heat insulator (large)

Gas pipe Liquid pipe

No gap

Coupler heat insulation

Coupler heat insulator (small)

Be sure to overlap the insulation

Fixing screw (2 positions)

Install the barriers in the correct direction.

Barrier

Fixing screw (2 positions)

Hook

RFM base

Nylon fastener

For fixing the drain hose

To outdoor unit

(Continued to the next page)

SUMOTUWETH FR

3 2 1

3 4

1 2

123

123 123 123

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

Strip 10 mm

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.

terminal

Sleeve

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

60 mm or more

• Use a 4-core wire cord.

Power supply cord or connection cord

3. CONNECTION OF WIRING

INDOOR UNIT SIDE

(1) Remove the electric component box.

Electric component box

RFM

Remove the four tapping screws.

CAUTION

1 Do not remove the screws. If the stays

are removed, the electric component box will fall.

2 If you use as “Floor console”, you must

remove screws and RFMs (2 positions).

Wires

Remove the clamp. Install the clamp.

(1) When removing the electric component box, remove the clamp from

the cables.

(2) After completing the work, fasten the cables as they were originally by

installing the clamp.

Clamp

(2) Pull out the electric component box.

Electric component box

(3) Remove the electric component box cover.

Base

Electric component box cover

Remove the three tapping screws.

CAUTION

Be careful not to pinch the lead wires between the electric component box and base.

(4) Wiring

1 Remove the cord clamp. 2 Process the end of the connection cords to the dimensions as shown

in the figure.

3 Connect the end of the connection cord fully into the terminal block.

Wired remote

Cord clamp

4 Fasten the connection cord with a cord clamp. 5 Fasten the end of the connection cord with the screw.

controller cord (option)

Cord clamp

Connection cord (to outdoor unit)

CAUTION

Do not bundle the remote controller cord, or wire the remote controller cord in parallel, with the indoor unit connection wire (to the outdoor unit) and the power supply cord. It may cause erroneous operation.

(5) Floor console/Under celing select switch

1 This unit was set for use as a ceiling type at the factory. 2 When using the unit as a floor type, perform the following settings in

FUNCTION SETTING. (Refer to 8 FUNCTION SETTING.) Setting the Cooler Room Temperature Correction

Setting the Heater Room Temperature Correction

MOUNT THE COVER PLATE

→Setting Value “01”

AND THE INTAKE GRILLE

1. MOUNT THE COVER PLATE (RIGHT)

(1) Cut a pipe exit hole in the right plate. This is only when the pipe exits

from the right side. (This operation is not required when the protrusion is on the top or rear.)

(2) Join the cover plates (right) and mount with the screw (ø4 × 10).

Cover plate (Right)

2. MOUNT THE COVER PLATE (LEFT)

Join the cover plates (left) and mount with the screw (ø4 × 10).

Cover plate (Left)

3. MOUNT THE INTAKE GRILLE

(1) Cut the right side of the intake grille. This is only when the pipe exits

from the right side.

(2) Insert the hinges on the bottom of the intake grille into the holes in the

base assembly. Then mount the arms to the three areas on the top of the intake grille.

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.

××

× 2)

××

) correctly.

mark.

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.

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.

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.

) ( ) button to change the signal code

) 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

) ( ) buttons to select the setting value.

Setting value

CAUTION

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.

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

High ceiling

When using floor console installation, don't need to change the setting value.

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

(400 hours)

Long interval (1,000 hours) Short interval

(200 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

When using floor console installation, change the setting value to “01”.

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

When using floor console installation, change the setting value to “01”.

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

Yes

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

Setting Description

Yes

• 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

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

•

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.

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

TEST RUN

Test run button

Test run display

Troubleshooting

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

OPERATION lamp (Green)

TIMER lamp (Orange)

FILTER 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

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

Exessive 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 (Green)

(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)

(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)

FILTER lamp

(Orange)

(2 times)

(3 times)

(4 times)

(Red)

[Troubleshooting at the remote control LCD]

This is 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 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

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

Exessive 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

SPECIAL INSTALLATION

METHODS

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

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. 9374318346