INSTALLATION

MANUAL

EH052EAMC

EH070EAM(1)C

DH094EAMC

System Air Conditioner

E S F I P D G R DB98-27157A(2)

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Safety Precautions

The following safety precautions must be taken when using your air conditioner.

WARNING

• Risk of electric shock Can cause injury or death. • Disconnect all remote electric power supplies before servicing, installing or cleaning. • This must be done by the manufacturer or its service agent or a similarqualified person in order to avoid a hazard.

INSTALLING THE UNIT

 The unit should not be installed by the user. Ask the dealer or authorizedcompany to install the units except room air conditioners for the U.S.A and

Canada area.

 If the unit is installed improperly, water leakage, electric shock or fire may

result.

 Mount with the lowest moving parts at least 2.5 m above the floor or grade

level. (If applicable)

 The manufacturer does not assume responsibility for accidents or injurycaused by an incorrectly installed air conditioner. If you are unsure aboutinstallation, contact an installation specialist.

 When installing the built-in type air conditioner, keep all electrical cablessuch as the power cable and the connection cord in pipe, ducts, cablechannels e.t.c to protect them against liquids, outside impacts and so on.

 This appliance is not accessible to the general public. This applianceshould be installed according to the provided installation instruction.

POWER SUPPLY

LINE,FUSE OR

CIRCUIT BREAKER

 If the power cord of this air conditioner is damaged, it must be replaced bythe manufacturer, its service agent or similarly qualified persons in order toavoid a hazard.

 The unit must be plugged into an independent circuit if applicable or connect the power cable to the auxiliary circuit breaker. An all pole disconnection from the power supply must be incorporated in the fixedwiring with a contact opening of >3mm.

 Do not use an extension cord with this product.

 If the unit is equipped with a power supply cord and a plug, the plug mustbe accessible after installation.

 The air conditioner must be installed in accordance with national wiring regulations and safety regulations wherever applicable.

2007-1-23 13:06:29

Contents



Preparation for Installation............................................................................ 4



Deciding on Where to Install the Air Conditioner ....................................... 5



Indoor Unit Installation ................................................................................ 9



Purging the Unit .......................................................................................... 10



Connecting the Connection Cord ................................................................ 11



Drain Hose Installation ................................................................................ 13



Connecting the Indoor Unit Assembly Piping .............................................. 15



Cutting/Flaring the Pipes ............................................................................. 16



Checking Correct Grounding ....................................................................... 17



Performing Leak Tests ................................................................................ 18



Insulation ..................................................................................................... 19



Adjusting Air Flow ....................................................................................... 20



Setting Up the Mode Option ........................................................................ 21



Assigning Address to Indoor Unit ................................................................ 24



Additional Functions .................................................................................... 25



Drain Pump Installation (Optional) ............................................................... 27



Troubleshooting .......................................................................................... 29



Parts List (Optional) ..................................................................................... 32

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Preparation for Installation

When deciding on the location of the air conditioner with the owner, the following restrictions must be taken into account.

General

Do NOT install the air conditioner in a location where it will come into contact with the following elements:

 Combustible gases

 Saline air

 Machine oil

 Sulphide gas

 Special environmental conditions

If you must install the unit in such conditions, first consult your dealer.

Accessories

 The following accessories are supplied with the indoor unit.

The type and quantity may differ depending on the specifications.

Owner’sInstructions(1)

Installation

Manual(1)

Insulation Cover

Pipe in(1)

Insulation

Cover Pipe out(1)

Insulation Drain (1)

Insulation

CoverDrain(1)

Insulation Pipe in(1) Insulation Pipe out(1)

Cable-Tie(8) Flexible hose(1) Clamp hose(2) Rubber(8)

Wired Remote Controller Accessories

Wired remote controller Cable-Tie Cable Clamp M4 x 16 Tapped

Screws

Indoor unit power drawing cable

Communication cable ofthe wired remote controller

Wire joint Owner’s Instruction

Installation Manual

2007-1-23 13:06:31

Deciding on Where to Install the Air Conditioner

Indoor Unit

 There must be no obstacles near the air inlet and outlet.

 Install the indoor unit on a ceiling that can support its weight.

 Maintain sufficient clearance around the indoor unit.

 Make sure that the water dripping from the drain hose runs away correctlyand safely.

 The indoor unit must be installed in this way, that they are out of publicaccess. (Not touchable by the users)

 After connecting a chamber, insulate the connection part between the indoorunit and the chamber with t10 or thicker insulation. Otherwise, there can beair leak or dew from the connection part.

Space Requirements for Indoor Unit

1500mm or more

1500mm or more

1500mm or more

1500mm or more

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Deciding on where to install the Air Conditioner (Continued)

Drawing of the indoor unit



EH052EAMC

938.4

(Suspension position)

Unit : mm

1000 or more

8 100=800

860 (Air outlet duct flange)

900

22-ø3.2

Inspection hole

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6

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Number

7

8

5

6

3

4

1

2

Name

Liquid pipe connection

RGas pipe connection

Drain pipe connection

Drain pipe connection

Power supply connection

Air discharge flange

Air filter

Hook

Discharge side

Description

Ø6,35 Flare

Ø12,7 Flare

OD32 ID26

Using drain pump (Optional)

For M8~M10

Suction side

2007-1-23 13:06:33

Deciding on where to install the Air Conditioner (Continued)



EH070EAM(1)C

Unit : mm

(Suspension position)

or more

(Air outlet duct flanger)

Inspection hole

Number

7

8

5

6

3

4

1

2

Name

Liquid pipe connection

RGas pipe connection

Drain pipe connection

Drain pipe connection

Power supply connection

Air discharge flange

Air filter

Hook

Discharge side

Description

EH070EAMC:Ø9.52 Flare/EH070EAM1C:Ø6.35 Flare

Ø15.88 Flare

OD32 ID26

Using drain pump (Optional)

Suction side

For M8~M10

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Deciding on where to install the Air Conditioner (Continued)



DH094EAMC

18-Ø3.2

397 (Suspension position)

Unit : mm

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90 220

Inspection hole

480

Discharge side

Number

7

8

5

6

3

4

1

2

Name

Liquid pipe connection

RGas pipe connection

Drain pipe connection

Drain pipe connection

Power supply connection

Air discharge flange

Air filter

Hook

ODØ32

76

132

144

Suction side

Description

Ø9,52 Flare

Ø15,88 Flare

OD32 ID26

Using drain pump (Optional)

For M8~M10

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Indoor Unit Installation

1 Mark the place to insert the suspension bolt where you want to install theindoor unit.

Note  Refer to page 6~8 for the dimension.

2 Insert bolt anchors. Use existing ceiling supports or construct a suitablesupport as shown in figure.

3 Install the suspension bolts depending on the ceiling type.

IM PORTANT Ensure that the ceiling is strong enough to support the weight of the indoor unit.Before hanging the unit, test the strength of eachattached suspension bolt.

4 Screw eight nuts to the suspension bolts making space for hanging the indoor unit.

IM PORTANT You must install the suspension bolts more than 4 when installing the indoor unit.

5 Hang the indoor unit to the suspension bolts between two nuts.

Note  Tubing must be laid and connected inside the ceiling when suspending the unit. If the ceiling is already constructed, lay the tubing into position for connection to the unit before placing the unit inside the ceiling.

6 Screw the nuts to suspend the unit.

7 Adjust level of the unit by using measurement plate for all 4 sides.

Note  For proper drainage of condensate, give a 10mm slant to the left or right side of the unit which will be connected with the drainhose, as shown in the figure. Make a tilt when you wish to install the drain pump, too.

Concrete

Insert

Hole in anchor

Hole in plug

Suspension bolt(M8)-field supply

Support du plafond

10mm

Drain hose connection port

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Purging the Unit

On delivery, the indoor unit is loaded with an inert nitrogen gas. All this gas must therefore be purged before connecting the assemblypiping. To purge the inert gas, proceed as follows.

Unscrew the caps at the end of each pipe.

Result:All inert gas escapes from the indoor unit.

Note  To prevent dirt or foreign objects from getting into the pipes

during installation, do NOTremove the caps completely unti

lyou are ready to connect the piping.

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Connecting the Connection Cord

The indoor unit is powered from the outdoor unit via the connection cord.

1 Remove the screw on the electrical component box and remove the cover plate.

2 Route the connection cord through the side of the indoor unit and connectthe cable to terminals as shown in page 12.

3 Route the other end of the cable to the outdoor unit through the ceiling &the hole on the wall.

4 Reassemble the electrical component box cover, carefully tightening thescrew.

Note  When connecting the cables, you must pass them through

the cable clamp to fix them securely.

 Connect the Connection Cord as seen in next picture ,

and the torque of screw is 40~70kgf•cm .

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Connecting the Connection Cord(Continued)

Wiring Diagram

Receiver

& Display

Unit(Optional)

MAIN PCB

Float

SwitchDrain

Pump(Optional)

Indoor Unit

1(L) 2(N) Vc Vc Vw Vw F1 F2 V1 V2 F3 F4

Power

Communication

Wired Remote

Controller

MAIN POWER

1 ø, 220- 240V~, 50H z

F1 F2

Outdoor Unit

Cable Specifications

Power supply Max/Min(V) MCCB

Single Phase

ELB Power cable length

220-240V~/50Hz 264/198 Trip:25A 25A 2.5mm,2wires 10m or less

 The power cables are not supplied with the air conditioner.

 The power cables use the grade H07RN-F or H05RN-F materials.

Earth cable

Ø1.6mm,1wire

2007-1-23 13:06:38

Drain Hose Installation

Care must be taken when installing the drain hose for the indoor unitto ensure that any condensate water is correctly drained outside.

Thedrain hose can be installed to the right of the base pan.

1 Insert the flexible hose to the drain hose port.

Note Fix the flexible hose to the indoor unit with the supplied cableclamp securely.

(Use the screwdriver to fix the flexible hose securely.)

2 Install the drain hose so that its length can be as short as possible.Internal diameter of the drain hose should be the same or slightly biggerthan the external diameter of the drain hose port.

Note

32mm(Inner diameter)

 Give a slightly slant to the drain hose for proper drainage of condensate.

 Fix the flexible hose to the PVC with the supplied cable tiesecurely.

3 Wrap the drain hose with the insulation drain as shown in figure and secure it.

Indoor

Unit

Cable

Clamp

Cable-Tie

Insulation drain hose

Insulation cover drain

CAUTION

Must fit tightly againstbody without any gap.

No gap

CAUTION

When not installing the drain pump

Do not give the hose and upward gradient after the connection port.

This will cause water to flow backwards when the unit is stopped, resulting in water leaks.

Upward gradien

When installing the drain pump

If it is necessary to increase the height of the drain hose somewhat, the portion directly after

75cm. If it is raised higher than 75cm, there can be water leaks.

75cm or less

Ceiling

Do not apply force to the piping on the unit side when connecting the drain hose. The hose should not be allowed to hang loose from its connection to the unit. Fasten the hose to a wall, frame or other support as close to the unit as possible.

Support pieces

Ceiling

Ceiling

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Drain Hose Installation (Continued)

Testing the drainage

Prepare a little water about 5 liters.

1 Pour water into the base pan in the indoor unit as shown in figure.

2 Confirm that the water flows out through the drain hose.

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Connecting the Indoor Unit Assembly Piping

There are two refrigerant pipes of differing diameters:

◆ A smaller one for the liquid refrigerant

◆ A larger one for the gas refrigerant

◆ The thickness of tube should not less than 1.0mm

◆ The inside of copper tube must be clean & has no dust.

The connection procedure for the refrigerant pipes varies according to the exit position of the pipes from the indoor unit, as seen when facing the indoor in the “A” side.

◆ Liquid refrigerant port

◆ Gas refrigerant port

◆ Drain hose connection port

1 Remove the pinch pipe on the pipes and connect the assembly pipes to each pipe, tightening the nuts, first manually and then with a torque wrench, a spanner applying the following torque.

Outer Diameter

6.35 mm (1/4")

9.52 mm (3/8")

Torque (kgf•cm)

140~170 kgf•cm

250~280kgf•cm

12.70 mm (1/2")

15.88 mm (5/8")

380~420kgf•cm

440~480kgf•cm

19.05 mm (3/4") 990~1210kgf•cm

22.23 mm (7/8") 990~1210kgf•cm

Note ◆ If the pipes must be shortened refer to page 16.

2

3

Must use insulator which is thick enough to cover the refrigerant tube to protect the condensate water on the outside of pipe falling onto the floor and the efficiency of the unit will be better.

Cut off any excess foam insulation.

A

Gas refrigerant port

Liquid refrigerant port

Drain hose connection port a. When the indoor unit is above the outdoor unit

Indoor unit

Outdoor unit

Oil trap (Must be installevery 10m) b. When the outdoor unit is above the indoor unit

4 Be sure that there must be no crack or wave on the bended area.

5

6

It would be necessary to double the insulation thickness (10mm or more) to prevent condensation even on the insulator when if the installed area is warm and humid.

Shape an oil trap as shown in figure the oil trap must be formed every level difference of 10m.

Radius

5cm

Outdoor unit

Oil trap(Must be installedevery 10m)

Indoor unit

Oil trap(suction tube)

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Cutting/Flaring the Pipes

Connect the pipe within 50m and cutting pieces will not be gone into the pipe as being clean to pipe section.

1 Make sure that you have the required tools available

(pipe cutter, reamer, flaring tool and pipe holder).

2 If you wish to shorten the pipes, cut it with a pipe cutter, taking care to ensure that the cut edge remains at a 90° angle with the side of the pipe. Refer to the illustrations below for examples of edges cut correctly and incorrectly.

90 O

Oblique Rough Burr

3

4

5

To prevent any gas from leaking out, remove all burrs at the cut edge of the pipe, using a reamer.

Slide a flare nut on to the pipe and modify the flare.

Outer Diameter (D)

6.35 mm (1/4")

9.52 mm (3/8")

12.70 mm (1/2")

15.88 mm (5/8")

19.05 mm (3/4")

22.23 mm (7/8")

Depth (A)

1.3mm

1.8mm

2.0mm

2.2mm

2.2mm

2.2mm

Check that the flaring is correct, referring to the illustrations below for examples of incorrect flaring.

Inclined Damaged Surface Cracked Uneven Thickness

6 Align the pipes and tighten the flare nuts first manually and then with a torque wrench, applying the following torque.

Outer Diameter

6.35 mm (1/4")

9.52 mm (3/8")

Torque (kgf•cm)

140~170 kgf•cm

250~280kgf•cm

12.70 mm (1/2")

15.88 mm (5/8")

380~420kgf•cm

440~480kgf•cm

19.05 mm (3/4") 990~1210kgf•cm

22.23 mm (7/8") 990~1210kgf•cm

CAUTION

◆ In case of welding the pipe, you must weld with nitrogen gas blowing.

2007-1-23 13:06:44

Connect the pipe within 50m and cutting pieces will not be gone into the pipe as being clean to pipe section.

1 Make sure that you have the required tools available

(pipe cutter, reamer, flaring tool and pipe holder).

2 If you wish to shorten the pipes, cut it with a pipe cutter, taking care to ensure that the cut edge remains at a 90° angle with the side of the pipe. Refer to the illustrations below for examples of edges cut correctly and incorrectly.

90 O

Oblique Rough Burr

3

4

5

To prevent any gas from leaking out, remove all burrs at the cut edge of the pipe, using a reamer.

Slide a flare nut on to the pipe and modify the flare.

Outer Diameter (D)

6.35 mm (1/4")

9.52 mm (3/8")

12.70 mm (1/2")

15.88 mm (5/8")

19.05 mm (3/4")

22.23 mm (7/8")

Depth (A)

1.3mm

1.8mm

2.0mm

2.2mm

2.2mm

2.2mm

Check that the flaring is correct, referring to the illustrations below for examples of incorrect flaring.

Checking Correct Grounding

If the power distribution circuit does not have an earth or the ground does not comply with specifications, an grounding electrode must be installed.

The corresponding accessories are NOT supplied with the air conditioner.

1 Select an grounding electrode that complies with the specifications given in the illustration.

2

3

4

Determine a suitable location for the grounding electrode:

◆ I n damp hard soil rather than loose sandy or gravel soil that has a higher grounding resistance

◆ Away from underground structures or facilities, such as gas pipes, water pipes, telephone lines and underground cables

◆ At least two metres away from a lightening conductor grounding electrode and its cable

Note ◆

The grounding wire for the telephone line cannot be used to ground the air conditioner.

Finish wrapping insulating tape around the rest of the pipes leading to the outdoor unit.

Install a green/yellow coloured grounding wire (Ø1.6 mm, section

2-mm2 or greater):

◆

If the grounding wire is too short, connect an extension lead, in a mechanical way and wrapping it with insulating tape (do not bury theconnection)

◆ Secure the grounding wire in position with staples

Note ◆ If the grounding electrode is installed in an area of heavy traffic, its wire must be connected securely.

5 Carefully check the installation, by measuring the grounding resistance with a ground resistance tester. If the resistance is above required level, drive the electrode deeper into the ground or increase the number of grounding electrodes.

6 Connect the grounding wire to the electrical component box inside of the outdoor unit.

Carbon plastic

Steel core

PVC-insulated green/yellow wire, 2mm2x 3.5 m

Terminal M4

To grounding screw

50cm

6

Inclined Damaged Surface Cracked Uneven Thickness

Align the pipes and tighten the flare nuts first manually and then with a torque wrench, applying the following torque.

CAUTION

◆ In case of welding the pipe, you must weld with nitrogen gas blowing.

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Performing Leak Tests

Leak Test

Before completing the installation (insulation of the hose and pipe), you must check that there are no gas leaks.

1 After closing both high and low stop valve of the outdoor unit, inject nitrogen gas into refrigerant pipe.

2 By using soap bubbles, check leak on flare nut connection of pipes.

3 Purge nitrogen gas after finishing leak test.

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Insulation

Once you have checked that there are no leaks in the system, you can insulate the piping and hose.

1 To avoid condensation problems, place heat-resistant polyethylene foam separately around each refrigerant pipe.

Note ◆ Always make the seam of pipes face upwards.

2 Wind insulating tape around the pipes.

3 Finish wrapping insulating tape around the rest of the pipes leading to the outdoor unit.

No gap

Heat resistant polyethylene foam

Insulation cover

pipe Insulation pipe

Body

Be sure to overlap the insulation

CAUTION

Must fit tightly against body without any gap.

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Adjusting Air Flow

E. S. P(External Static Pressure) Setting for Phase Control Motor

With its phase control motor, you can adjust the indoor unit fan speed depending on the installation condi- tion. If the external static pressure is high so that the duct becomes longer or if the external static pressure is low so that the duct becomes shorter, adjust the fan speed by referring the following table. Refer to the page 21 to set the option code.

0 1 2 3 4 6 8 Static Pressure(mmAq)

Model

EH052EAMC

EH070EAM(1)C

DH094EAMC

Step

Mid

Low

Hi

Mid

Low

Hi

Mid

Low

Hi

CMM

(CFM)

18

16

25

22

19

15

13

11

20

0114B3

-1901CF

011443

-1C019E

015431

-1E03F6

0114B4

-190221

011443

-1C01FF

-

Option Code for Indoor Unit

0114B4

-1902F3

011444

-1C0271

015433

-1E0137

0114B4

-1902F6

0114B4

-1902FC

011444

-1C02F5

011444

-1C02FB

-

-

-

-

-

015433

-1E01AA

015433

-1E03BE

015434

-1E02F6

Note ◆ represents E. S. P(External Static Pressure) range of factory setting. You don't have to adjust the fan speed separately if the external static pressure of the installation place is in

. When it is out of , input the appropriate option code.

◆ If you input the inappropriate option code, error may occur or the air conditioner is out of order.

The option code must be inputted correctly by the installation specialist or service agent.

Range of static pressure (Factory preset)

Model

EH052EAMC/EH070EAM(1)C

DH094EAMC

Min.

External static pressure(mmAq)

Normal Max.

0 2 4

4 6 8

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Setting Up the Mode Option

1

Setting Option Setup Method

For example) Option Code :

Prepare of the Option Setup mode.

a. Take out the batteries of remote control.

b. Press the button simultaneously and insert the battery again.

c. Make sure the remote control display shows as .

2 Enter the Option Setup mode and select your option according to the following procedure.

1 The default value is . Otherwise, push the button to .

◆ Every time you press the button, the display panel reads or repeatedly.

2 Press the button to set the display panel to .

◆

...

3 Press the button to set the display panel to .

◆

...

4 Press the button to set the display panel to .

◆

...

5 Press the button to set the display panel to .

◆

...

6 Press the button to set the display panel to .

◆

...

 Setting is not required if you want to input

. is displayed by default.

1

2

3

4

5

6

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Setting Up the Mode Option (Continued)

7

8

9

10

11

12

◆

...

◆

...

 Setting is not required if you want to input

. is displayed by default.

◆

...

◆

...

◆

...

3 Check you made right selections upon completion of the selection.

a. Press the button once to check the former part of option code you inputted.

◆ The display part shows .

b. Press the button once more to check the latter part of option code you inputted.

◆ The display part shows .

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Setting Up the Mode Option (Continued)

4

5

Press the button.

◆ When you press the button towards the indoor unit, the sound 'Ding' or 'Diriring' is heard and the power indicator of the display flashes at the same time. Then the option code setting is completed.

(If the sound is not heard, press the button again.)

Check the air conditioner operates normally.

a. Remove the battery from the remote control. b. Insert the battery into the remote control again.

c. Press the towards the indoor unit.

Note ◆ If all indicators of the indoor unit are flashing, plug out the power plug and plug it in again. Then press the button.

◆ If the air conditioner does not operate normally or all lamps indicators flash, check that the correct option code is set up.

Option items

Remote

Model

Control SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12

EH052EAMC 0 1 1 4 B 4 1 9 0 2 F 3

EH070EAM(1)C 0

DH094EAMC 0

1

1

1

5

4

4

4

3

4

3

1

1

C

E

0

0

2

3

7

B

1

E

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Assigning Address to Indoor Unit

1 Before installing the indoor unit, assign an address to the indoor unitaccording to the air conditioning system plan..

2 The address of the indoor unit is assigned by adjusting MAIN(SW02) andRMC(SW04) rotary switches.

SW02

SW05 SW06 SW07

SW04

K1 K2 K3 K4

SW02

K5 K6 K7 K8

SW04

K9 K10 K11K12

SW05 SW06 SW07

3 It is required to set the RMC address if you install the wired remote controllerand/or the centralized controller.

4 If you install optional accessories such as the wired remote controller, centralizedcontroller, etc. see an appropriate installation manual.

5 If an optional accessory is not installed, you do not have to set the

RMCaddress. However, adjust K1 and K2 switches of the SW05 DIPswitch to “ON”position in this case.

2007-1-23 13:06:54

Additional Functions

Compensation for lost temperature in heating operation

◆ Reduces the difference between an actual room temperature and a sensed temperature by the air conditioner when heating.

Switch No.

K5

Switch ON

2°C compensation

Switch OFF

5°C compensation

K5 K6 K7 K8

SW06

Adjusting filter cleaning cycle

◆ You can adjust the cycle for filter sign indicator.

Switch No.

K6

Switch ON

1000 hours

Switch OFF

2000 hours

K5 K6 K7 K8

SW06

Hot water heater

◆ You must adjust the K7 when you install the hot water heater.

Switch No.

K7

Switch ON

No use of hot water heater

Switch OFF

Use of hot water heater

K5 K6 K7 K8

SW06

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Additional Functions (Continued)

K 9 K10 K11 K12

SW07

External Control

◆ You must adjust the K11 when you use external control.

Switch No.

K11

Switch ON

No use of external control

Switch OFF

Use of external control

◆ You can use external control when the K11 switch is turned off.

Operation ON/OFF Function

Connector No.

CN83(RED)

SHORT

Operation ON

OPEN

Operation OFF

CN83(RED)

ON/OFF Switch

Operation State Display

Connector No.

Function

PIN #1 and #2 of CN81(RED) +12V Out if any error occurs

PIN #3 and #4 of CN81(RED) +12V Out when the compressor is operating

Error Display

AC

220V

Comp. Status Display

Sub. PCB

CN81(RED)

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Drain Pump Installation (Optional)

Accessories

Drain Pump and

FloatSwitch(1)

M4 X 12

TappedScrew (4)

Cable-Tie (3) Insulation Drain (2) Drain Hose (1)

1 Remove the air filter.

2 Assemble the drain socket as seen in the picture after removing the rubbercap.

3 Assemble the float switch with the drain pump.

Drain socket

Drain pump andfloat switch

4 Connect the drain hose.

Note Attach the drain hose tightly with the cable tie or a bondingagent so that it does not get removed or water does not drain.

Drain hose

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Drain Pump Installation (optional) (Continued)

Must fit tightly against body without any gap.

Cable-tie

Indoor unit Drain hose drain

Insulation

5 IInsert the flexible hose into the drain socket until it clicks.

Note ◆ Check if water does not drain.

◆ Insulate the drain hose so that frost does not form.

Float switch

6 Connect the cable to the electrical component box as shown at the figure.

Note ◆ Connect the drain pump cable to yellow terminal(CN74)and the float switch to black terminal(CN51).

Drain pump

SW05

7 Adjust K4 DIPswitch(SW05) to the “OFF” position.

Switch No.

Switch Position Using Drain Pump

K4

ON

OFF

X

O

Note ◆ Wrap the drain tube outlet on the right and left side ofthe indoor unit with an insulating materials.

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Troubleshooting

Detection of errors

◆ If an error occurs during the operation, one or more LED flickers and the operation is stopped except the LED.

◆ If you re-operate the air conditioner, it operates normally at first, then detect an error again.

LED Display on the receiver & display unit

LED Display

Indicators

Concealed Type

Abnormal conditions

Power reset

Error of temperature sensor in the indoor unitt (Open/Short)

Error of heat exchanger sensorin the indoor unit

Blue Red

Standard Type

X

X X

X

X X

X

X

X

X

X

Remarks

Error of the outdoor temperature sensor

Error of the condensor temperature sensor-

Error of the discharge temperature sensor

X X X

1. No communication for 2 minutesbetween indoor units (Communication error for more than 2 minutes)

2. Indoor unit receiving the communicationerror from outdoor unit

3. Outdoor unit tracking 3 minutes error

X X X

4. When sending the communication errorfrom the outdoor unit, the mismatchingof the communication numbers andinstalled numbers after completion oftracking

(Communication error for more than 2 minutes)

● On Flickering X Off

◆ If you turn off the air conditioner when the LED is flickering, the LED is also turned off.

1. Indoor unit error (Display is unrelated with operation)

2. Outdoor unit error (Display is unrelated with operation)

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Troubleshooting (Continued)

LED Display

Concealed Type

Indicators

Abnormal conditions

Communication error between indoor units

Blue Red

Standard Type

X X X

1. Error of electronic expansion valve close

2. Error of electronic expansion valve open

3. 2’nd detection of high temperature cond

4. 2’nd detection of high temperaturedischarge

5. Error of reverse phase6. Compressor down due to

6’th detectionof freezing

X X

Detection of the float switch

Error of setting option switches for optionalaccessories

EEPROM error

X

X

X

X

X

X

X

X

EEPROM option error

● On Flickering X Off

◆ If you turn off the air conditioner when the LED is flickering, the LED is also turned off.

Remarks

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Setting up Option (Continued)

Wired remote controller

◆ If an error occurs, is displayed on the wired remote controller.

If you would like to see an error code, press the Test button.

Display Explanation

Compressor down due to protection control of the dischargetemperature sensor

Control due to the condenser temperature sensor when coolingmode

Error of the low pressure switch (Protection control)

Remark

Error about protection control of the outdoor unit

Reverse phase error (Protection control)

In removing frost

Error of the outdoor temperature sensor (Open/Short)

Error of condensor temperature sensor (Open/Short)

Error about the outdoor unitsensor (Open/Short)Detection during the operation of the indoor unit(sensing and sending errorsinto the communication data)

Error of discharge temperature sensor (Open/Short)

-System down caused by communication error after completionof tracking- Mismatching of the indoor unit numbers set with those communication after completion of 5 times tracking

Communication and theindoor unit errors

Error of temperature sensor in the indoor unit (Open/Short)

Self-diagnosis of theindoor and outdoor unit

Error of the heat exchanger sensor in the indoor unit (Open/

Short)

Error of electronic expansion valve open in the outdoor unit(when it is detected more than once)

Error of electronic expansion valve close in the outdoor unit(when it is detected more than once)

Error of communication between the indoor unit and the wiredremote controller

Wired remote controllererrors

Master wired remote controller�Slave wired remote controller

COM1/COM2 Cross-installed error

Error of setting option for wired remote controller COM2

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Parts list (Optional)

Centralized Controller Accessories

Centralized controller

Cable-tie

1 2 5 7

Owner’s instructions

1

Installation manual

1

Function Controller Accessories

Function controller

Cable-tie

1 2 6 7

Owner’s instructions

1

Installation manual

1

Transmitter Accessories

Transmitter

1

Transmitter power cable

1

Transmitter communication cable

1

Installation manual

1

Note ◆

If you would like to install the centralized controller, you must install the transmitter in the outdoor unit.

7-day Scheduler Accessories

7-day

Scheduler

1

Cable-tie

2 2 4

Owner’s instructions

1

Installation manual

1

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Receiver & Display Unit Accessories

Concealed Type

◆ Receiver & display unit

Receiver & display unit

1

STS 2S-2x10 tapped screw

2S-4x12 tapped screw

4 2

Owner’s instructions

1

Installation manual

1

◆ Wire kit

Wire kit

1

Standard Type

◆ Receiver & display unit

Wireless remote controller

1

M4x16 tapped screw

7

Cable-tie

2

Cable clamp

5

Owner’s instructions

1

Installation manual

1

◆ Wire kit

Wire kit

1

Wireless Remote Controller Accessories

Wireless remote controller

1

Battery

2

Remote control holder

STS 2S-2x10 tapped screw

1 2

Owner’s instructions

1

Installation manual

1

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