LG Electronics AMNC093D4A0(LMN090CE) Air Conditioner User Manual

website http://www.lgservice.com

LG

LG

Multi Type Air Conditioner

SERVICE MANUAL

MODEL

• Indoor Unit: Room Type Art Cool Type

AMNH093D4A0(LMN090HE)

AMNC093D4A0(LMN090CE)

AMNH123DEA0(LMN120HE)

AMNC123DEA0(LMN120CE)

AMNH093APM0(LMAN090HNS)

AMNC093APM0(LMAN090CNS)

AMNH123APM0(LMAN120HNS)

AMNC123APM0(LMAN120CNS)

• Outdoor Unit: A3UH363FA0(LMU360HE)

A3UC363FA0(LMU360CE)

CAUTION

• BEFORE SERVICING THE UNIT, READ THE SAFETY

PRECAUTIONS IN THIS MANUAL.

• ONLY FOR AUTHORIZED SERVICE PERSONNEL.

Multi type Air Conditioner Service Manual

TABLE OF CONTENTS

Model Number Nomenclature ....................................................................................................................3

Symbols Used in this Manual ...................................................................................................................4

Safety Precautions......................................................................................................................................5

Dimensions................................................................................................................................................11

Indoor Unit.............................................................................................................................................11

Outdoor Unit ...........................................................................................................................................12

Product Specifications .............................................................................................................................13

Installation .................................................................................................................................................15

Installation Parts.....................................................................................................................................15

Installation Tools .....................................................................................................................................15

Select the best location .........................................................................................................................16

Piping length and elevation ....................................................................................................................17

Fixing Installation Plate(Standart Type)..................................................................................................18

Preparing work for Installation (Artcool Type Only) ................................................................................19

Flaring Work and Connection of Piping..................................................................................................21

Flaring work............................................................................................................................................21

Connecting the Piping ............................................................................................................................22

Connecting the Cable between Indoor Unit and Outdoor Unit .............................................................30

Connect the cable to the Indoor unit. .....................................................................................................30

Connect the cable to the Outdoor unit....................................................................................................31

Connection method of the connecting cable(Example) ..........................................................................32

Connect the cable to the indoor unit.......................................................................................................33

Checking the Drainage, Forming the Pipings and Long Pipe Setting .................................................34

Checking the drainage............................................................................................................................34

Forming the piping..................................................................................................................................35

Air Purging and Evacuation .....................................................................................................................36

Checking method ...................................................................................................................................36

Evacuation..............................................................................................................................................37

Charging ....................................................................................................................................................38

Test Running .............................................................................................................................................39

Operation ...................................................................................................................................................40

Function of control..................................................................................................................................40

Function of Indoor Unit ...........................................................................................................................45

Function of Outdoor Unit ........................................................................................................................47

Remote Control Operation .....................................................................................................................48

Disassembly ..............................................................................................................................................49

Indoor Unit..............................................................................................................................................49

Schematic Diagram...................................................................................................................................54

Electronic Control Device .......................................................................................................................54

Wiring Diagram.......................................................................................................................................58

Components Locations...........................................................................................................................59

Troubleshooting Guide .............................................................................................................................64

Refrigeration Cycle Diagram ..................................................................................................................64

Self-diagnosis Function ..........................................................................................................................65

Cycle Troubleshooting Guide..................................................................................................................66

Electronic Parts Troubleshooting Guide .................................................................................................67

General Information................................................................................................................................72

2-way, 3-way Valve ....................................................................................................................................78

Exploded View & Replacement Parts List ..............................................................................................82

Indoor Unit .............................................................................................................................................82

Outdoor Unit ..........................................................................................................................................86

2 Multi type Air Conditioner

Model Number Nomenclature

Model Number Nomenclature

Indoor Unit

AMN H 09 3 D 4 A 0

Serial Number

Function

A : Basic, L : Nano Plasma + Auto Clean(Wall Mounted)

C: Plasma(Ceiling Cassette), G: Low Static Motor

ART COOL(DELUXE) Type Front Panel Color

B : Blue, D : Wood, M : Metal, R : Mirror, W : White

Chassis Name

Indoor Unit Type

Wall mounted split

D : D- look type

M : M- look type

Artcool type

L : L- look type G : G- look type

N : N- look type

A : standard/wide type D : Deluxe type

B : Ceiling Concealed Duct

V : Ceiling & Floor(Convertible)

Electrical Rating

3: 1Ø, 208~230V, 60Hz

Nominal Cooling Capacity in Btu/h

Ex) 9,000 Btu/h '09', 12,000 Btu/h '12'

Model Type

H: Heat Pump C: Cooling Only

MPS Variable Multi System Indoor Unit

Outdoor Unit

A3U H 36 3 F A 0

Serial Number

Function

A : Basic

Multi Type

F : Free Joint Multi Type

Electrical Ratings

3: 1Ø, 208~230V, 60Hz

Nominal Cooling Capacity in Btu/h

Ex) 24,000 Btu/h '24', 36,000 Btu/h '36'

Model Type

H: Heat Pump C: Cooling Only

R-410A MPS Variable Multi System Outdoor Unit

And No. of Connectable Indoor Units

Ex) A3U : Connectable max. 2 Indoor Units

Service Manual 3

Model Number Nomenclature

Combination table

Operation

1 UNIT

2 UNIT

3 UNIT

9

A

Cooling Heating

Combination(k Btu)

B C Total Unit-A Unit-B Unit-C Total

9 9000

Capacity (Btu/h)

9000

Input

(W)

1320

Current

(A)

5.9

EER

(Btu/h.w)

Unit-A Unit-B Unit-C Total

9000

Capacity (Btu/h)

9000

Input Current

(W)

1550

(A)

7.0

COP

(Btu/h.w) (w/w)

1.7

12

9 9

12

18

12000

9000 9000

12000 1320

18000 2180

5.9

9.8

12000

9000 9000

12000

18000

1410

2160

6.3

9.8

2.5

2.4

9

9

9 12

12 12

9

9

9 12

12 12

21 9000 12000

24 12000 12000

21000 2200

24000 2200

9.9

9.9

9000 12000

12000 12000

9 27 9000 9000 9000 27000 3650 16.5

12 30 9000 9000 12000 30000 3650 16.5

12 33 9000 12000 12000 33000 3650 16.5

12 36 12000 12000 12000 36000 3680 16.6

9000

9000

9000

9000

9000

12000

9000 12000 12000

12000 12000 12000

21000

24000

27000

30000

33000

36000

2160

2160

3300

3340

3340

3340

9.8

9.8

14.9

15.0

15.0

15.0

2.8

3.3

2.4

2.6

2.9

3.2

Notes :

1.Cooling Capacity is based on : indoor temp. 26.7°C(80.1°F)DB, 19.4°C(66.9°F)WB; outdoor temp. 35°C(95°F)DB, 23.9°C(75°F)WB

2.Heating Capacity is based on : indoor temp. 21.1°C(70°F)DB, 15.6°C(60.1°F)WB; outdoor temp. 8.3°C(46.9°F)DB, 6.1°C(43°F)WB

3.The total ability of connected a indoor unit is up to 24k Btu/h

Symbols Used in this Manual

NOTICE

This symbol alerts you to the risk of electric shock.

This symbol alerts you to hazards that could cause harm to the air conditioner.

This symbol indicates special notes.


Safety Precautions

Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions must be followed.

■

Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.

WARNING

This symbol indicates the possibility of death or serious injury.

CAUTION

This symbol indicates the possibility of injury or damage to properties only.

■

Meanings of symbols used in this manual are as shown below.

Be sure not to do.

Be sure to follow the instruction.

WARNING

■

Installation

Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.

• There is risk of fire or electric shock.

For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center.

• Do not disassemble or repair the product. There is risk of fire or electric shock.

Always ground the product.


Install the panel and the cover of control box securely.


Always install a dedicated circuit and breaker.

• Improper wiring or installation may cause fire or electric shock

Use the correctly rated breaker or fuse.


Service Manual 5


Do not modify or extend the power cable.


Do not install, remove, or reinstall the unit by yourself

(customer).

• There is risk of fire, electric shock, explosion, or injury.

Be cautious when unpacking and installing the product.

• Sharp edges could cause injury.

Be especially careful of the case edges and the fins on the condenser and evaporator.

For installation, always contact the dealer or an

Authorized Service Center.

• There is risk of fire, electric shock, explosion, or injury.

Do not install the product on a defective installation stand.

• It may cause injury, accident, or damage to the product.

Be sure the installation area does not deteriorate with age.

• If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.

Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open.

• Moisture may condense and wet or damage furniture.

Take care to ensure that power cable could not be pulled out or damaged during operation.


Do not place anything on the power cable.



Do not plug or unplug the power supply plug during operation.


Do not touch(operate) the product with wet hands.

• There is risk of fire or electrical shock.


Do not place a heater or other appliances near the power cable.

• There is risk of fire and electric shock.

Do not allow water to run into electric parts.

• It may cause There is risk of fire, failure of the product, or electric shock.

Do not store or use flammable gas or combustibles near the product.

• There is risk of fire or failure of product.

Do not use the product in a tightly closed space for a long time.

• Oxygen deficiency could occur.

Gasolin

When flammable gas leaks, turn off the gas and open a window for ventilation before turn the product on.

• Do not use the telephone or turn switches on or off. There is risk of explosion or fire

If strange sounds, or small or smoke comes from product.

Turn the breaker off or disconnect the power supply cable.

• There is risk of electric shock or fire.

Stop operation and close the window in storm or hurricane.

If possible, remove the product from the window before the hurricane arrives.

• There is risk of property damage, failure of product, or electric shock.

Service Manual 7


Do not open the inlet grill of the product during operation. (Do not touch the electrostatic filter, if the unit is so equipped.)

• There is risk of physical injury, electric shock, or product failure.

When the product is soaked

(flooded or submerged), contact an Authorized Service Center.


Be cautious that water could not enter the product.

• There is risk of fire, electric shock, or product damage.

Ventilate the product from time to time when operating it together with a stove, etc.


Turn the main power off when cleaning or maintaining the product.

• There is risk of electric shock.

When the product is not be used for a long time, disconnect the power supply plug or turn off the breaker.

• There is risk of product damage or failure, or unintended operation.

Take care to ensure that nobody could step on or fall onto the outdoor unit.

• This could result in personal injury and product damage.

CAUTION

■

Installation

Always check for gas (refrigerant) leakage after installation or repair of product.

• Low refrigerant levels may cause failure of product.

Install the drain hose to ensure that water is drained away properly.

• A bad connection may cause water leakage.

Keep level even when installing the product.

• To avoid vibration or water leakage.

90

°



Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods.

• It may cause a problem for your neighbors.

Use two or more people to lift and transport the product.

• Avoid personal injury.

Do not install the product where it will be exposed to sea wind (salt spray) directly.

• It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.

■

Operational

Do not expose the skin directly to cool air for long periods of time.

(Don't sit in the draft.)

• This could harm to your health.

Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer air conditioner, not a precision refrigeration system.

• There is risk of damage or loss of property.

Do not block the inlet or outlet of air flow.

• It may cause product failure.

Use a soft cloth to clean. Do not use harsh detergents, solvents, etc.

• There is risk of fire, electric shock, or damage to the plastic parts of the product.

Do not touch the metal parts of the product when removing the air filter. They are very sharp!

• There is risk of personal injury.

Wa x

Thinner

Service Manual 9


Do not step on or put anyting on the product. (outdoor units)

• There is risk of personal injury and failure of product.

Always insert the filter securely. Clean the filter every two weeks or more often if necessary.

• A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage.

Do not insert hands or other objects through the air inlet or outlet while the product is operated.

• There are sharp and moving parts that could cause personal injury.

Do not drink the water drained from the product.

Use a firm stool or ladder when cleaning or maintaining the product.

• It is not sanitary and could cause serious health issues.

• Be careful and avoid personal injury.

Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries.

• There is risk of fire or explosion

Do not recharge or disassemble the batteries.

Do not dispose of batteries in a fire.

• They may burn or explode.

If the liquid from the batteries gets onto your skin or clothes, wash it well with clean water.

Do not use the remote if the batteries have leaked.

• The chemicals in batteries could cause burns or other health hazards.


Dimensions

Dimensions

Indoor Unit

1. Split Type Indoor

H

W

D

2. Art Cool Type Indoor Unit

W D

H

Pipe Hole

Hanger Hole

Fix Hole

Installation plate

Model

Dimension

W

H

D mm mm mm

S4

9 kBtu/h

840

270

153

Split Type

SE

12 kBtu/h

895

282

165

ARTCOOL Type

SP3

9 kBtu/h 12 kBtu/h

570

568

129

Service Manual 11

Dimensions

Outdoor Unit

W

L7 L6 L8

L9

MODEL

DIM

L4

L5

L6

L7

L8

L9

L10

L11

L1

L2

L3

W

H

D mm mm mm mm mm mm mm mm mm mm mm mm mm mm


UE2 36k

1035

25

546

160

160

44

64.5

50

870

1038

320

360

340

25

Gas side

3-way valve

Liquid side

2-way valve

Product Specifications

Product Specifications

Indoor Unit

Nominal Cooling Capacity

★

Indoor Unit Type

Model

Nominal Heating Capacity

★

Air Circulation H/M/L

Setting temperature range(cool/heat)

Fan motor Output

Model

Input

Running Current

Fan Type

No. Used / Diameter

Noise Level (Sound Press,1m) H/M/L

Temperature controller

Coil Tube Size (OD)

Fins per inch

No. of Rows & Column

Dehumidification Rate

Dimensions (W*H*D)

Net Weight

Piping Connection Liquid

Gas

Drain hose (ID Ø)

Packing Dimension (W*H*D)

Stuffing Quantity With(Without) S/Parts kcal/h(W)

Btu/h kcal/h(W)

Btu/h

CMM(CFM)

°C

W

V

A

EA/inch(mm) dBA inch(mm) l/h inch(mm) kg(lbs) inch(mm) inch(mm) mm inch(mm)

20/40ft(hi-c)

Wall Mounted

AMNC093D4A0(LMN090CE) AMNH093D4A0(LMN090HE) AMNC123DEA0(LMN120CE) AMNH123DEA0(LMN120HE)

2,267(2,637)

9,000

-

-

8.2(289)

18~30

15

DL-88430LGIF

DC36

0.15

Cross Flow Fan

1/3.74(95)

31 / 29 / 22

2,267(2,637)

9,000

2,267(2,637)

9,000

8.2(289)

16~30

15

DL-88430LGIF

DC36

0.15

Cross Flow Fan

1/3.74(95)

31 / 29 / 22

3,023(3,516)

12,000

-

-

3,023(3,516)

12,000

3,023(3,516)

12,000

9.4(332) 9.4(332)

18~30 16~30

15

DL-88430LGIF

DC36

0.15

Cross Flow Fan

1/3.74(95)

36 / 32 / 29

15

DL-88430LGIF

DC36

0.15

Cross Flow Fan

1/3.74(95)

36 / 32 / 29

Thermistor

0.197(5.0)

20

2R,15C

-

Thermistor

0.197(5.0)

20

2R,15C

1.1

Thermistor

0.197(5.0)

18

2R,15C

-

Thermistor

0.197(5.0)

18

2R,15C

1.2

33.0*10.6*6.0(840*270*153) 33.0*10.6*6.0(840*270*153) 35.2*11.1*6.5(895*282*165) 35.2*11.1*6.5(895*282*165)

7(15.4)

1/4 (6.35)

7(15.4)

1/4 (6.35)

9.5(20.9)

1/4 (6.35)

9.5(20.9)

1/4 (6.35)

3/8 (9.52)

20

3/8 (9.52)

20

3/8 (9.52)

20

3/8 (9.52)

20

35.7*13.1*8.8(906*332*223) 35.7*13.1*8.8(906*332*223) 38.3*9.1*14.6(973*231*372) 38.3*9.1*14.6(973*231*372)

440/910 (1091) 440/910 (1091) 353/719 (792) 353/719 (792)

Nominal Cooling Capacity

Nominal Heating Capacity

★

★

Indoor Unit Type

Model

Air Circulation H/M/L

Setting temperature range(cool/heat)

Fan motor Output

Model

No. of Poles

Input

Running Current

Fan Type

No. Used / Diameter

Noise Level (Sound Press,1m) H/M/L

Temperature controller

Coil Tube Size (OD)

Fins per inch

No. of Rows & Column

Dehumidification Rate

Dimensions (W*H*D)

Net Weight

Piping Connection Liquid

Gas

Drain hose (ID Ø)

Packing Dimension (W*H*D)

Stuffing Quantity With(Without) S/Parts kcal/h(W)

Btu/h kcal/h(W)

Btu/h

CMM(CFM)

°C

W

V

A

EA/inch(mm) dBA inch(mm) l/h inch(mm) kg(lbs) inch(mm) inch(mm) mm inch(mm)

20/40ft(hi-c)

Artcool

AMNC093APM0(LMAN090CNS) AMNH093APM0(LMAN090HNS) AMNC123APM0(LMAN120CNS) AMNH123APM0(LMAN120HNS)

2,267(2,637)

9,000

-

-

2,267(2,637)

9,000

2,267(2,637)

9,000

7.5(264) 7.5(264)

18~30 16~30

24 24

DL-89812LGIB DL-89812LGIB

3,023(3,516)

12,000

-

-

8.5(300)

18~30

24

DL-89812LGIB

3,023(3,516)

12,000

3,023(3,516)

12,000

8.5(300)

16~30

24

DL-89812LGIB

DC36

1.5

Turbo Fan

1/24.32(617.7)

37 / 31 / 27

Thermistor

0.197(5.0)

20

2R,20C

-

DC36

1.5

Turbo Fan

1/24.32(617.7)

37 / 31 / 27

Thermistor

0.197(5.0)

20

2R,20C

1.1

DC36

1.5

Turbo Fan

1/24.32(617.7)

43 / 39 / 31

Thermistor

0.197(5.0)

20

2R,20C

-

DC36

1.5

Turbo Fan

1/24.32(617.7)

43 / 39 / 31

Thermistor

0.197(5.0)

20

2R,20C

1.4

22.4*22.4*5.1(570*568*129) 22.4*22.4*5.1(570*568*129) 22.4*22.4*5.1(570*568*129) 22.4*22.4*5.1(570*568*129)

9(19.84)

1/4 (6.35)

9(19.84)

1/4 (6.35)

9(19.84)

1/4 (6.35)

9(19.84)

1/4 (6.35)

3/8 (9.52)

20

3/8 (9.52)

20

3/8 (9.52)

20

3/8 (9.52)

20

26.2*25.7*9.1(665*653*231) 26.2*25.7*9.1(665*653*231) 26.2*25.7*9.1(665*653*231) 26.2*25.7*9.1(665*653*231)

237/534(239/539) 237/534(239/539) 237/534(239/539) 237/534(239/539)

Note : 1.

★

See the page "Combination Table"

2. Due to our policy of innovation some specifications may be changed without notification.

Service Manual 13

Product Specifications

Outdoor Unit - Multiple piping models

Model

Cooling Capacity

Heating Capacity

★

★

Input

★

Cooling

Heating

Running Current

★

(208/230V) Cooling

Heating

Power Supply

Max. Number of Connectable Indoor Units

Compressor

(Constant)

Type

Model

Compressor

(Constant)

Motor Type

Quantity

Motor Input

Oil Charge

Oil Type

Capacitor

O.L.P Type(model name)

Type

Model

Motor Type

Ea

W cc

µF/Vac

Refrigerant charge

Coil

Quantity

Motor Input

Oil Charge

Oil Type

Capacitor

O.L.P Type(model name)

Charge

Type

Control

Tube Size (OD)

Ea

W cc

µF/Vac g(oz) inch(mm)

Fan motor

Fins per inch

No. of Rows & Column/No.

Model

Output

Capacitor

Fan Type

No. Used / Diameter

Discharge

Air Circulation Outdoor

Noise Level(H/L) at 230V Sound Press,1m

SVC Valve Liquid

Dimensions

Net Weight

Gas

W*H*D

Outdoor

Max. Interunit Piping Length Total of Each Room

Max. Installation

Height Difference

Packing Dimension

Stuffing Quantity

For One Room

Indoor Unit~Outdoor Unit

Indoor Unit~Indoor Unit

W*H*D

W

µF/Vac

EA/inch(mm)

Side / Top

CMM(CFM) dB(A) 1 inch(mm) inch(mm) kg(lbs) m m m m inch(mm)

20/40ft

Btu/hr

W kcal/hr

Btu/hr

W kcal/hr

W

W

A

A

Ø,V,Hz

Notes: 1. Capacities are based on the following conditions:

Cooling: -Indoor Temperature 26.7°C(80.1°F)DB/19.4°C66.9°F)WB

-Outdoor Temperature 35°C(95°F)DB/23.9°C(75°F)WB

-Interconnecting Piping Length 7.5m

-Level Difference of Zero.

Heating: -Indoor Temperature 21.1°C(70°F)DB/15.6°C(60.1°F)WB

-Outdoor Temperature 8.3°C(46.94°F)DB/6.1°C(42.98°F)WB

-Interconnecting Piping Length 7.5m

-Level Difference of Zero.

2. Capacities are Net Capacities.

3.

★

: See the page "Combination Table"

4. Due to our policy of innovation some specifications may be changed without notification.

A3UC363FA0(LMU360CE) A3UH363FA0(LMU360HE)

9,000~36,000

2637~10,550

2267~9071

-

-

-

1320~3680

-

5.9~16.6

-

1,208/230,60

3

Rotary

9,000~36,000

2637~10,550

2267~9071

9,000~36,000

2637~10,550

2267~9071

1320~3680

1410~3340

5.9~16.6

6.3~15.0

1,208/230,60

3

Rotary

GK141K

2 Pole Induction(PSC)

1

GK141K


1

1430 1430

350Å}10 350Å}10

FVC68D FVC68D

35 / 370

External Type

35 / 370

External Type

Rotary

GJ230K

Rotary

GJ230K


1

2370


1

2370

700±10 7000±10

FVC68D FVC68D

50 / 400

Internal Type

2400

R410A

L.E.V

50 / 400

Internal Type

2400

R410A

L.E.V

0.276(7.0)

18

2R,48C

ARC286B01 * 2

102

2/370

Propeller

2 / 15.7(400)

Side

63(2225)

0.276(7.0)

18

2R,48C

ARC286B01 * 2

102

2/370

Propeller

2 / 15.7(400)

Side

63(2225)

51

1/4 (6..35) * 3EA

3/8 (9.52) * 3EA

34.3*41.7*12.6 (870*1060*320)

80(176)

45

15

7.5

7.5

41.1*44.9*17.3 (1045*1140*440)

51/111

51

1/4 (6..35) * 3EA

3/8 (9.52) * 3EA

34.3*41.7*12.6 (870*1060*320)

80(176)

45

15

7.5

7.5

41.1*44.9*17.3 (1045*1140*440)

51/111


Installation

Installation

Read carefully, and then follow step by step.

Installation Parts

Installation plate

Type "B" screw

Type "A" screw and plastic anchor

Remote Control Holder

Installation Tools

Figure Name

Screw driver

Electric Drill

Measuring Tape, Knife

Hole Core Drill

Spanner

Torque wrench

Figure Name

Ohmmeter

Hexagonal wrench

Ammeter

Gas Leak Detector

Thermometer,

Level

Flaring Tool Set

Service Manual 15

Installation

Select the best location

Indoor unit

1. Do not have any heat or steam near the unit.

2. Select a place where there are no obstacles in front of the unit.

3. Make sure that condensation drainage can be conveniently routed away.

4. Do not install near a doorway.

5. Ensure the spaces indicated by arrows from the wall, ceiling, fence or other obstacles.

6. Use a stud finder to locate studs to prevent unnecessary damage to the wall.

CAUTION: Install the indoor unit on the wall where the height from the floors more than 2.3m(7.5ft).

Outdoor unit

1. If an awning is built over the unit to prevent direct sunlight or rain exposure, make sure that heat radiation from the condenser is not restricted.

2. Ensure that the spaces indicated by arrows around front, back and side of the unit.

3. Do not place animals and plants in the path of the warm air.

4. Take the air conditioner weight into account and select a place where noise and vibration are minimum.

5. Select a place so that the warm air and sound from the air conditioner do not disturb neighbors.

Rooftop Installations:

If the outdoor unit is installed on a roof structure, be sure to level the unit. Ensure the roof structure and anchoring method are adequate for the unit location.

Consult local codes regarding rooftop mounting.

More than 5cm

(2.0 inch)

More than 2.3m

(90.6 inch)

More than 50cm

More than 2m more than 30cm

(11.8 inch) more than 70cm

(27.6 inch)

More than 5cm

(2.0 inch)

More than 5cm

(2.0 inch)

More than 10cm

More than 50cm more than 30cm

(11.8 inch)


Installation

Piping length and elevation

Multi Piping Type

Capacity(Btu/h)

Max total length of all pipes

(A+B/A+B+C)

Max length of each pipe (A/B/C)

Min length of each pipe (A/B/C)

Max Elevation between each indoor unit and outdoor unit (h1)

Max elevation between indoor units (h2)

36k 45m(150ft) 15m(50ft) 3m(10ft) 7.5m(25ft) 7.5m(25ft)

Indoor Capacity

(Btu/h)

9K

12K

Gas

3/8"

3/8"

Liquid

1/4"

1/4"

Pipe Size

Standard Length

7.5m(25ft)

7.5m(25ft)

Additional Refrigerant

20g/m(0.32oz/ft)

20g/m(0.32oz/ft)

A

B h2 h2 h1

C h1 h1

CAUTION: Capacity is based on standard length and maximum allowance length is on the basis of reliability. Oil trap should be installed every 5~7 meters (16.4~23.0ft).

Service Manual 17

Installation

Fixing Installation Plate(Standard Type)

The wall you select should be strong and solid enough to prevent vibration

1. Mount the installation plate on the wall with type "A" screws. If mounting the unit on a concrete wall, use anchor bolts.

• Mount the installation plate horizontally by aligning the centerline using a level.

Chassis

Hook

Installation Plate

Type "A" screw

2. Measure the wall and mark the centerline. It is also important to use caution concerning the location of the installation plate-routing of the wiring to power outlets is through the walls typically. Drilling the hole through the wall for piping connections must be done safely.

CHASSIS

(Grade)

S4

SE

A

50

65

Distance (mm)

B

105

110

C

59

85

D

105

110

D

Ø70mm

C

Left rear piping

Installation plate

B

A

Right rear piping

Ø70mm


Installation

Preparing work for Installation (Artcool Type Only)

Open panel front

1. First, push the front panel backward and lift it up to remove the two screws.

2. The moment of lifting the both lower parts of panel front, you can hear sound this panel came out, In this time panel front is separated

3. After pull down this panel a bit, and separate connecting wire with product.

Panel Front

Connector

Remove cover pipe and cover side

1. Remove two screws(for fixing cover pipe)

2. Pull up the cover side of desired connecting direction, then cover side is separated.

3. In case of connecting direction is left or right, path through the hole of cover side.

CAUTION: After removing the pipe hole, cut the burr for safety.

NOTICE

When connecting pipe path through rear wall, don’t remove the hole.

Drain hose junction

1. Remove the rubber stopple of desired direction of drainage.

2. As the following picture, Insert drain hose in the handle of drain pan, and join drain hose and connecting hose.

Pipe hole

Adhesive

Drain hose

Connecting part

Only one desiring direction rubber cap

Service Manual 19

Installation

■

Sticking the installation guide map and fixing Indoor unit

1. Put an Installation Guide Map on the desired

surface.

INSTALLATION GUIDE MAP

7. Drill the piercing part for connecting pipe as

diameter 50mm. (In case of piercing rear surface)

2. Make a hole with diameter of 6mm and depth of

30-35mm when piercing a screw point.

INST

AIIA

TION G

UIDE MAP

Refer to No. 5 on this page when making a hole in the wall.

8. First, Drive the two points of the upper parts by

screws. (Leave 10mm for hanging product)

10m m

INST

ALLA

TION GU

3. Drive the fore plastic anchors into drilled points.

IN

STA

LL

AT

IO

N G

UID

E M

AP

9. Drive the lower parts after facing the hole of

product with plastic anchors, and fix completely

the upper screws.

Plastic anchors

Plastic anchors

4. Hang the hole of product at the upper screws.

(In this time, Remove the map)

(Falling attention)

INST

ALLA

TION GUIDE MAP

Hanger hole

(Rear side of product)

In case of nothing wrong in the matter, connect the pipe and the wire.

(Installation manual reference)

5. Check the fixed product with light power.

■

Drill a hole in the wall

• Drill the piping hole with a ø50mm hole core drill. Drill the piping hole at either the right or the left with the hole slightly slanted to the outdoor side.

WALL

Indoor Outdoor

6. Look at suited horizon by horizontal meter on

the horizontal setting line, and Fix lightly the

map by adhesive tape.

Horizontality

IN

STA

LL

AT

IO

N G

UID

E M

AP


Flaring Work and Connection of Piping

Flaring Work and Connection of Piping

Flaring work

Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure.

Cut the pipes and the cable.

1. Use the piping kit accessory or the pipes purchased locally.

2. Measure the distance between the indoor and the outdoor unit.

3. Cut the pipes a little longer than measured distance.

Copper pipe

4. Cut the cable 1.5m (5.0ft) longer than the pipe length.

90

°

Slanted Uneven Rough

Burrs removal

1. Completely remove all burrs from the cut cross section of pipe/tube.

2. Put the end of the copper tube/pipe in a downward direction as you remove burrs in order to avoid dropping burrs into the tubing.

Pipe

Reamer

Point down

Putting nut on

• Remove flare nuts attached to indoor and outdoor unit, then put them on pipe/tube having completed burr removal.

(not possible to put them on after flaring work)

Flare nut

Copper tube

Flaring work

• Carry out flaring work using flaring tool as shown below.

• Firmly hold copper pipe in a die in the dimension shown in the table above.

Outside diameter mm

Ø6.35

Ø9.52

inch

1/4

3/8

A mm

0~0.5

0~0.5

Bar

Bar

Handle

Yoke

Cone

Copper pipe

Clamp handle

Red arrow mark

Service Manual 21


Check

1. Compare the flared work with the figure by.

2. If a flared section is defective, cut it off and do flaring work again.

Smooth all round

Inside is shiny without scratches

= Improper flaring =

Even length all round

Connecting the Piping

Indoor

1. Prepare the indoor unit's piping and drain hose for installation through the wall.

2. Remove the plastic tubing retainer(see the illustration by) and pull the tubing and drain hose away from chassis.

3. Replace only the plastic tubing holder 1, not the holder 2 in the original position.

Inclined Surface damaged

Cracked Uneven thickness

For right rear piping

1. Route the indoor tubing and the drain hose in the direction of rear right.

2. Insert the connecting cable into the indoor unit from the outdoor unit through the piping hole.

• Do not connect the cable to the indoor unit.

• Make a small loop with the cable for easy connection later.

3. Tape the tubing, drain hose, and the connecting cable. Be sure that the drain hose is located at the lowest side of the bundle. Locating at the uper side can cause drain pan to overflow inside the unit.

If the drain hose is routed inside the room, insulate the hose with an insulation material* so that dripping from "sweating"(condensation) will not damage furniture or floors.

*Foamed polyethylene or equivalent is recommended.

Drain hose

Drain hose

Tape

Connecting pipe

Drain hose

Connecting cable

Connecting cable

Drain hose

Loop

Gas side piping

Liquid side piping



4. Indoor unit installation

Hook the indoor unit onto the upper portion of the installation plate.(Engage the two hooks of the rear top of the indoor unit with the upper edge of the installation plate.)

Ensure that the hooks are properly seated on the installation plate by moving it left and right.

Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots(clicking sound).

Connecting the piping to the indoor unit and drain hose to drain pipe.

1. Align the center of the pipes and sufficiently tighten the flare nut by hand.

2. Tighten the flare nut with a wrench.

Outside diameter mm

Ø6.35

Ø9.52

inch

1/4

3/8 the drain pipe.

Torque kg.m

1.8

4.2

3. When extending the drain hose at the indoor unit, install

Connecting cable

Drain hose

Indoor unit tubing Flare nut Pipes

Open-end wrench (fixed)

Flare nut

Connection pipe Wrench

Indoor unit tubing

Drain pipe

Indoor unit drain hose

Adhesive

Vinyl tape(narrow)

Plastic bands

Insulation material

Wrap the insulation material around the connecting portion.

1. Overlap the connection pipe insulation material and the indoor unit pipe insulation material. Bind them together with vinyl tape so that there may be no gap.

2. Wrap the area which accommodates the rear piping housing section with vinyl tape.

3. Bundle the piping and drain hose together by wrapping them with vinyl tape for enough to cover where they fit into the rear piping housing section.

Connection pipe

Indoor unit pipe

Vinyl tape (wide) Wrap with vinyl tape

Connecting cable

Pipe

Vinyl tape(narrow)

Wrap with vinyl tape

Pipe

Vinyl tape(wide)

Drain hose

Service Manual 23


For left rear piping

1. Route the indoor tubing and the drain hose to the required piping hole position.

2. Insert the piping, drain hose, and the connecting cable into the piping hole.

3. Insert the connecting cable into the indoor unit.

• Don't connect the cable to the indoor unit.

• Make a small loop with the cable for easy connection later.

4. Tape the drain hose and the connecting cables.

1 2

Connecting cable

Drain pipe

5. Indoor unit installation

• Hang the indoor unit from the hooks at the top of the installation plate.

• Insert the spacer etc. between the indoor unit and the installation plate and separate the bottom of the indoor unit from the wall.

Connecting the piping to the indoor unit and the drain hose to drain pipe.

1. Align the center of the pipes and sufficiently tighten the flare nut by hand.

2. Tighten the flare nut with a wrench.

Outside diameter mm

Ø6.35

Ø9.52

inch

1/4

3/8

Torque kg.m

1.8

4.2

3. When extending the drain hose at the indoor unit, install the drain pipe.

Indoor unit

Installation plate

8cm

Spacer

Indoor unit tubing Flare nut Pipes

Open-end wrench (fixed)

Flare nut

Connection pipe

Wrench

Indoor unit tubing

Drain hose

Indoor unit drain hose

Adhesive

Vinyl tape (narrow)


Wrap the insulation material around the connecting portion.

1. Overlap the connection pipe heat insulation and the indoor unit pipe heat insulation material. Bind them together with vinyl tape so that there may be no gap.

2. Wrap the area which accommodates the rear piping housing section with vinyl tape.

3. Bundle the piping and drain hose together by wrapping them with cloth tape over the range within which they fit into the rear piping housing section.


Plastic bands

Insulation material

Connection pipe

Vinyl tape

(wide)

Connecting cable

Indoor unit piping

Wrap with vinyl tape

Pipe

Vinyl tape(narrow)

Drain hose

Pipe

Vinyl tape(narrow)

Wrap with vinyl tape(wide)

Reroute the pipings and the drain hose across the back of the chassis.

Indoor unit installation

1. Remove the spacer.

2. Ensure that the hooks are properly seated on the installation plate by moving it left and right.

3. Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots(clicking sound).

Piping for passage through piping hole

Connecting cable

Drain hose

Service Manual 25


■

Panel Assembly(Art Cool Type only)

1. First, Check the side cover assembly exactly, Fix power cord in the bottom groove of cover side left.

2. Assemble connecting lead wire with controller and first fix the upper part of panel front, then match the lower part of panel front

Panel Front

Connector

3. Drive two screws.


Installation Information. For left piping. Follow the instruction below.

Good case

• Press on the upper side of clamp and unfold the tubing to downward slowly.


Bad case

• Following bending type from right to left may cause damage to the tubing.

Service Manual 27


REMOTE CONTROL PREPARATION(OPTIONAL)

HOW TO MOUNT ONTO A WALL

Remove the battery cover from the remote controller.

• Slide the cover according to the arrow direction.

Insert the two batteries.

• Be sure that the (+) and (-) directions are correct.

• Be sure that both batteries are new.

Re-attach the cover.

• Slide it back into position.

• Do not use rechargeable batteries, such batteries differ from standard dry cells in shape, dimensions, and performance.

• Romove the batteries from the remote controller if the air conditioner is not going to be used for some long time.


Outdoor

Align the center of the pipings and sufficiently tighten the flare nut by hand.


Finally, tighten the flare nut with torque wrench until the wrench clicks.

• When tightening the flare nut with torque wrench, ensure the direction for tightening follows the arrow on the wrench.

Outside diameter mm inch

Ø6.35

Ø9.52

1/4

3/8

Torque kg.m

1.8

4.2

Outdoor unit

A-UNIT

Gas side piping

B-UNIT

Liquid side piping

C-UNIT

Torque wrench

Service Manual 29

Connecting the Cable between Indoor Unit and Outdoor Unit

Connecting the Cable between Indoor Unit and Outdoor Unit

Connect the cable to the Indoor unit.

Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individually

according to the outdoor unit connection. (Ensure that the color of the wires of the outdoor unit and the terminal No. are the same as those of the indoor unit.)

The earth wire should be longer than the common wires.

The circuit diagram is not subject to change without notice.

When installing, refer to the electrical diagram behind the front panel of Indoor Unit.

The wiring for the outdoor unit can be found on the inside of the Outdoor Unit control cover.

RECOMMAND:

• The circuit diagram is not subject to change without notice.

• Be sure to connect wires according to the wiring diagram.

• Connect the wires firmly, so that not to be pulled out easily.

• Connect the wires according to color codes by referring to the wiring diagram.

RECOMMAND: Provide a circuit breaker between power source and the outdoor unit as shown below.

Main power source

Air

Conditioner

Circuit Breaker

Use a circuit breaker or time delay fuse.

RECOMMAND: The power cord connected to the outdoor unit should be complied with the following specifications (ETL recognized and CSA certified).

AWG14

Line voltage (208~230V)

GN/YL

20mm

The power connecting cable connected to the indoor and outdoor unit should be complied with the following specifications (ETL recognized and CSA certified).

AWG18

Low voltage (below 40V)

GN/YL

20mm

RECOMMAND: When using the separate wire as the power cord, please fix the separate wire into the control box panel by using tie wrap as the fixture.



Connect the cable to the Outdoor unit.

1. Remove the cover control from the unit by loosening the screw.

Connecting cable(Low voltage)

Connect the wires to the terminals on the control board individually as the following.

2. Secure the cable onto the control board with the holder

(clamper).

3. Refix the cover control to the original position with the screw.

Outdoor unit

Terminal block

Over 5mm

Holder for power supply cord

Power supply cable

36k Outdoor side

1

A-UNIT

2 3 4 1

B-UNIT

2 3 4

1

C-UNIT

2 3 4

Cover control

Connecting cable

1 2 3 4

Terminal BLOCK

Indoor A-UNIT

L N

Power Source

208/230V AC

(High voltage)

1 2 3 4

Terminal BLOCK

Indoor B-UNIT

1 2 3 4

Terminal BLOCK

Indoor C-UNIT

NOTICE

:

1. Separately wire the high and low voltage line.

2. Use heat-proof electrical wiring capable of withstanding temperature up to 75°C(167°F).

3. Use outdoor and waterproof connection cable rated more than 300V for the connection between indoor and outdoor unit.

(For example, Type SJO-WA)

WARNING:

• Be sure to comply with local codes while running the wire from the indoor unit to the outdoor unit(size of wire and wiring method, etc).

• Every wire must be connected firmly.

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

Service Manual 31


Connection method of the connecting cable(Example)

(1) Remove two-caps on the conduit panel.

(2) Make a hole appropriate for the passage of connection cable through on cap by tool.

(for low voltage line)

(3) Pass the connecting cable through the hole.

(4) Properly connect the cable on the terminal block.

(5) Fix the connection cable with cord clamp provided on the unit not to have strain at the terminal when the connection cable is pulled outside up to a 35 pound weight.

(6) Wind the vinyl tape round the connecting cable for sealing between the surface of the connection cable and cap.

(7)Finally, Fix the cap to the conduit panel.

Lock nut

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

G

Terminal block

Cord clamp

Cap(Reuse)

Power supply line

(1ø, 230/208V)

Conduit panel

Hole

(for low voltage line)

Cap(Remove)

Taping

(for sealing)

Low voltage line

(connecting cable)

When connecting each power wire to the corresponding terminal, follow instructions "How to connect wiring to the terminals" and fasten the wire tightly with the fixing screw of the terminal plate.

High voltage

Strand wire

How to connect wiring to the terminals

■

For strand wiring

(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip the insulation to expose the strand wiring about

10mm(3/8").

(2) Using a screwdriver, remove the terminal screw(s) on the terminal plate.

(3) Using a round terminal fastener or pliers, securely clamp each stripped wire end with a round terminal.

(4) Position the round terminal wire, and replace and tighten the terminal screw using a screwdriver.

Loosening the terminal block screw

Low voltage

Fastening the wire tightly

Round terminal

Connecting cable



CAUTION: Provide a circuit breaker between power source and the unit as shown below.

Main power source

Air

Conditioner

Circuit Breaker

Use a circuit breaker or time delay fuse.

Model

36k 1Ø, 230/208V

Connect the cable to the indoor unit

1. Connect the wires to the terminals on the control board individually according to the outdoor unit connection.

• Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of indoor unit respectively.

40A

Connecting cable

2. Attach the Grille onto the cabinet.

• Grasp the lower left and right side of the Grille and engage four tabs on the top inside edge of the chassis.

• Press the Grille toward the chassis until it will be back into place.

Service Manual 33

Checking the Drainage, Forming the Pipings and Long Pipe Setting

Checking the Drainage, Forming the Pipings and Long Pipe Setting

Checking the drainage

To check the drainage.

1. Pour a glass of water on the evaporator.

2. Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit.

Drain piping

1. The drain hose should point downward for easy drain flow.

2. Do not make drain piping.

Water leakage

Do not raise

Accumulated drain water

Air

Water leakage

Waving

Water leakage

Tip of drain hose dipped in water

Ditch

Downward slope

Less than

50mm gap



Forming the piping

Form the piping by wrapping the connecting portion of the indoor unit with insulation material and secure it with two kinds of vinyl tape.

• If you want to connect an additional drain hose, the end of the drain outlet should be routed above the ground.

Secure the drain hose appropriately.

In cases where the outdoor unit is installed below the indoor unit perform the following.

1. Tape the piping, drain hose and connecting cable from down to up.

2. Secure the tapped piping along the exterior wall using saddle or equivalent.

Seal a small opening around the pipings with gum type sealer.

Taping

Drain hose

Plastic band

Pipings

Connecting cable

Power supply cord

• Trap is required to prevent water from entering into electrical parts.

In cases where the Outdoor unit is installed above the Indoor unit perform the following.

1. Tape the piping and connecting cable from down to up.

2. Secure the taped piping along the exterior wall. Form a trap to prevent water entering the room.

3. Fix the piping onto the wall by saddle or equivalent.

Seal a small opening around the pipings with gum type sealer.

Trap

Trap

Service Manual 35

Air Purging and Evacuation

Air Purging and Evacuation

Air and moisture remaining in the refrigerant system have undesirable effects as indicated below.

1. Pressure in the system rises.

2. Operating current rises.

3. Cooling(or heating) efficiency drops.

4. Moisture in the refrigerant circuit may freeze and block capillary tubing.

5. Water may lead to corrosion of parts in the refrigeration system.

Therefore, the indoor/outdoor unit and connecting tube must be checked for leak tight, and vacuumed to remove incondensible gas and moisture in the system.

Checking method

Preparation

• Check that each tube(both liquid and gas side tubes) between the indoor and outdoor units have been properly connected and all wiring for the test run has been completed. Remove the service valve caps from both the gas and the liquid side on the outdoor unit. Check that both the liquid and the gas side service valves on the outdoor unit are kept closed at this stage.

Leakage test

• Connect the manifold valve(with pressure gauges) and dry nitrogen gas cylinder to this service port with charge hoses.

CAUTION: Be sure to use a manifold valve for leak testing.

The high side manifold valve must always be kept closed.

• Pressurize the system to no more than 150 P.S.I.G. with dry nitrogen gas and close the cylinder valve when the gauge reading reached 150 P.S.I.G. Next, test for leaks with liquid soap.

CAUTION: To avoid nitrogen entering the refrigerant system in a liquid state, the top of the cylinder must be higher than its bottom when you pressurize the system. Usually, the cylinder is used in a vertical standing position.

1. Do a leakage test of all joints of the tubing(both indoor and outdoor) and both gas and liquid side service valves.

Bubbles indicate a leak. Be sure to wipe off the soap with a clean cloth.

2. After the system is found to be free of leaks, relieve the nitrogen pressure by loosening the charge hose connector at the nitrogen cylinder. When the system pressure is reduced to normal, disconnect the hose from the cylinder.

Outdoor unit

Manifold valve

Pressure gauge

Lo Hi

Indoor unit

Charge hose

NOTICE

: Leakage test shoud be done for each indoor unit connection set, separately.

Nitrogen gas cylinder(in vertical standing position)



Evacuation

1. Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit.

Confirm the "Lo" knob of the manifold valve is open. Then, run the vacuum pump.

The operation time for evacuation varies with tubing length and capacity of the pump. The following table shows the time required for evacuation.

Required time for evacuation when 30 gal/h vacuum pump is used

If tubing length is less than 10m (33 ft)

10 min. or more

If tubing length is longer than 10m (33 ft)

15 min. or more

Outdoor unit

Indoor unit

2. When the desired vacuum is reached, close the "Lo" knob of the manifold valve and stop the vacuum pump.

Finishing the job

1. With a service valve wrench, turn the valve stem of liquid side valve counter-clockwise to fully open the valve.

2. Turn the valve stem of gas side valve counter-clockwise to fully open the valve.

3. Loosen the charge hose connected to the gas side service port slightly to release the pressure, then remove the hose.

4. Replace the flare nut and its bonnet on the gas side service port and fasten the flare nut securely with an adjustable wrench. This process is very important to prevent leakage from the system.

5. Replace the valve caps at both gas and liquid side service valves and fasten them tight.

This completes air purging with a vacuum pump.

The air conditioner is now ready for test running.

NOTICE

: Repeat evacuation procedure for each indoor unit.

Pressure gauge

Manifold valve

Lo Hi

Open

Vacuum pump

Close

Service Manual 37

Charging

Charging

■

Each outdoor unit is factory charged (nameplate charge) for the evaporator as well as a 7.5m(25ft) line set for each indoor line.

Any time total line set is used either shorter or longer then the nominal 22.5m(75ft: for tri-zone) line set length the refrigerant charge has to be adjusted.

■

Whether the line set is made shorter or longer you must adjust the charge based on how many ft of tubing are either added or removed based on 20g(0.22oz) of R-410A per meter(foot).

Capacity (Btu/h)

Max total length of all pipes

(A+B+C)

Max length of each pipe

(A/B/C)

Min length of each pipe

(A/B/C)

Max Elevation between each indoor unit and outdoor unit

(h1)

Max elevation between indoor units (h2)

Additional

Refrigerant

36k 45m(150ft) 15m(50ft) 3m(10ft) 7.5m(25ft) 7.5m(25ft) 20g/m(0.22oz/ft)

Example:

A 80ft line set is used for tri - zone 5 additional ft X 0.22 ounces per foot= add 1.1 ounces of R-410A

Important:

If you are ever uncertain of the unit charge, reclaim, evacuate and weigh in the correct charge using the unit nameplate charge adjusting for line sets longer or shorter than 7.5m(25ft) for each indoor unit.


Test Running

Test Running

Split, Art Cool Type

1. Check that all tubing and wiring have been properly connected.

2. Check that the gas and liquid side service valves are fully open.

1) Prepare remote controller

Remove the battery cover by pulling it according to the arrow direction.

Insert new batteries making sure that the (+) and (–) of battery are installed correctly.

Reattach the cover by pushing it back into position.

Bolt

NOTE:

• Use 2 AAA(1.5volt) batteries. Do not use rechargeable batteries.

• Remove the batteries from the remote controller if the system is not going to be used for a long time.

2) Precautions in test run

■

The initial power supply must provide at least 90% of the rated voltage.

Otherwise, the air conditioner should not be operated.

■

For test run, carry out the cooling operation firstly even during heating season. If heating operation is carried out firstly, it leads to the trouble of compressor. Then attention must be paid.

■

Carry out the test run more than 5 minutes without fail. (Test run will be cancelled 18 minutes later automatically)

■

The test run is started by pressing timer cancel button five times continuously. (Room type)

■

To cancel the test run, press any button.

3) Settlement of outdoor unit

■

Anchor the outdoor unit with a bolt and nut(ø10mm) tightly and horizontally on a concrete or rigid mount.

■

When installing on the wall, roof or rooftop, anchor the mounting base securely with a nail or wire assuming the influence of wind and earthquake.

■

In the case when the vibration of the unit is conveyed to the hose, secure the unit with an anti-vibration rubber.

Tubing connection

4) Evaluation of the performance

Operate unit for 15~20 minutes, then check the system refrigerant charge:

1. Measure the pressure of the gas side service valve.

2. Measure the temperature of the intake and discharge of air.

3. Ensure the difference between the intake temperature and the discharge is more than 8°C(46°F) (Cooling) or reversely (Heating).

Refrigerant

Outside ambient

TEMP.

The pressure of the gas side service valve.

R-410A 35°C (95°F) 8.5~9.5kg/cm 2 G(120~135 P.S.I.G.)

Discharge air

Discharge air

Intake temperature

Discharge temperature

Intake temperature

Discharge temperature

Service Manual 39

Operation

Operation

Function of control

1. MAIN UNIT FUNCTION

• DISPLAY

Operation Indicator

• On while in appliance operation, off while in appliance pause

• Flashing while in disconnection or short in Thermistor (3 sec off / 0.5 sec on)

Sleep Timer Indicator

• On while in sleep timer mode, off when sleep timer cancel or appliance operation pause

Timer Indicator

• On while in timer mode (on/off), off when timer mode is completed or canceled

Defrost Indicator

• Off except when hot start during heating mode operation or while in defrost control

■

Cooling Mode Operation

• When the intake air temperature reaches 0.5°C(32.9°F) below the setting temp, the compressor and the outdoor fan stop.

• When it reaches 0.5°C(32.9°F) above the setting temp, they start to operate again.

Compressor ON Temp

➲

Setting Temp+0.5°C(32.9°F)

Compressor OFF Temp

➲

Setting Temp-0.5°C(31.1°F)

• While in compressor running, operating with the airflow speed set by the remote control. While compressor is off fan operates at low speed regardless of the setting.

■

Soft Dry Operation Mode

• When the dehumidification operation input by the remote control is received, the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature.

26°C(78.8°F)

≤

Intake Air Temp

24°C(75.2°F)

≤

Intake Intake Air Temp<26°C(78.8°F)

18°C(64.4°F)

≤

Intake Intake Air Temp<24°C(75.2°F)

➲

➲

➲

25°C(77°F)

Intake Air Temp-1°C(30.2°F)

Intake Air Temp-0.5°C(31.1°F)

Intake Air Temp<18°C(64.4°F)

➲

18°C(64.4°F)

• While compressor off, the indoor fan repeats low airflow speed and stop.

• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidification operation and 4-min compressor off repeat.

Compressor ON Temp.

➲


Compressor OFF Temp.

➲

Setting Temp-0.5°C(31.1°F)

• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.

■

Heating Mode Operation

• When the intake air temp reaches +3°(37.4°F)…above the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on.

Compressor ON Temp.

➲

Setting Temp.

Compressor OFF Temp.

➲

Setting Temp.+3°C(37.4°F)

• While compressor on, the indoor fan is off when the indoor pipe temp. is below 20°C(68°F), when above

27°C(80.6°F) , it operates with the low or setting speed. When the indoor pipe temp is between 20°C(68°F) and


Operation

27°C(80.6°F), it operates with Super-Low(while in sleep mode, with the medium airflow speed).

• While compressor off, the indoor fan is off when the indoor pipe temp is below 33°C(91.4°F), when above

35°C(95°F) , it operates with the low airflow speed.

• While in defrost control, the indoor is outdoor fans are turned off.

■

Defrost Control(Heating)

• Defrost operation is controlled by timer and sensing temperature of outdoor pipe.

• The first defrost starts only when the outdoor pipe temperature falls below -6°C(21.2°F) after 35 minutes passed from starting of heating operation and more than 4 minutes operation of compressor.

• Defrost ends after 12 minutes passed from starting of defrost operation when the outdoor pipe temperature rises over 15°C(59°F) even before 12 minutes.

• The second defrost starts only when the outdoor pipe temperature falls below -6°C(21.2°F) after 35 minutes passed from ending of the first defrost and more than 4 minutes operation of compressor.

■

Fuzzy Operation

• When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed since the operation off, the operation mode is selected.

• When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and only the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake air temp at that moment as follows.

24°C(75.2°F)

≤

Inatake Air Temp

21°C(69.8°F)

≤

Inatake Air Temp<24°C(75.2°F)

Inatake Air Temp<21°C(69.8°F)

➲

➲

➲

Fuzzy Operation for Cooling

Fuzzy Operation for Dehumidification

Fuzzy Operation for Heating

• If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for 10 sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.

1) Fuzzy Operation for Cooling

• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C(32.9°F) or more below the setting temp, the compressor is turned off. When 0.5°C(32.9°F) or more above the setting temp, the compressor is turned on.

Compressor ON Temp

Compressor OFF Temp

➲

Setting Temp +0.5°C(32.9°F)

➲

Setting Temp + 0.5°C(32.9°F)

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time.

26°C(78.8°F)

≤

Intake Air Temp

24°C(75.2°F)

≤


22°C(71.6°F)

≤


18°C(64.4°F)

≤



➲

➲

➲

➲

➲

25°C(77°F)

Intake Air Temp + 1°C(33.8°F)

Intake Air Temp + 0.5°C(32.9°F)

Intake Air Temp

18°C(64.4°F)

• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the

Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule.

• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.

Service Manual 41

Operation

2) Fuzzy Operation for Dehumidification

• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C(32.9°F) or more below the setting temp, the compressor is turned off. When 0.5°C(32.9°F) or more above the setting temp, the compressor is turned on.

Compressor ON Temp

Compressor OFF Temp

➲

Setting Temp + 0.5°C(32.9°F)

➲



26°C(78.8°F)

≤

Intake Air Temp

24°C(75.2°F)

≤


22°C(71.6°F)

≤


18°C(64.4°F)

≤



➲

➲

➲

➲

➲

25°C(77°F)

Intake Air Temp+1°C(33.8°F)

Intake Air Temp+0.5°C(32.9°F)

Intake Air Temp

18°C(64.4°F)



• While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as in dehumidification operation.

3) Fuzzy Operation for Heating

• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C(37.4°F) or more above the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on.

Compressor ON Temp

Compressor OFF Temp

➲

Setting Temp

➲

Setting Temp + 3°C(37.4°F)


20°C(68°F)

≤

Intake Air Temp

Intake Air Temp<20°C(68°F)

➲

➲

Intake Air Temp + 0.5°C(32.9°F)

20°C(68°F)



• While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or the medium according to the intake air temperature and the setting temperature.

■

Airflow Speed Selection

• The airflow speed of the indoor fan is set to high, medium, low, or power (auto) by the input of the airflow speed selection key on the remote control.

■

On-Timer Operation

• When the set time is reached after the time is input by the remote control, the appliance starts to operate.

• The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.

• If the appliance is operating at the time set by the timer, the operation continues.

While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.

■

Off-Timer Operation

• When the set time is reached after the time is input by the remote control, the appliance stops operating.

• The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.


Operation

• If the appliance is on pause at the time set by the timer, the pause continues.

■

Off-Timer <=> On-Timer Operation

• When the set time is reached after the on/off time is input by the remote control, the on/off-timer operation is carried out according to the set time.

■

Sleep Timer Operation

• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote control while in appliance operation, the operation of the appliance stops.

• While the appliance is on pause, the sleep timer mode cannot be input.

• While in cooling mode operation, 30 min later since the start of the sleep timer, the setting temperature increases by 1°C(33.8°F). After another 30 min elapse, it increases by 1°C(33.8°F) again.

• When the sleep timer mode is input while in cooling cycle mode, the airflow speed of the indoor fan is set to the low.

• When the sleep timer mode is input while in heating cycle mode, the airflow speed of the indoor fan is set to the medium.

■

Chaos Swing Mode

• By the Chaos Swing key input, the upper/lower vane automatically operates with the Chaos Swing or they are fixed to the desired direction.

• While in Chaos Swing mode, the angles of cooling and heating cycle operations are different.

■

Chaos Natural Wind Mode

• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the airflow mode is operated for 2~15 sec. randomly by the Chaos Simulation.

■

Jet Cool Mode Operation

• While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in the other mode operation (cooling, dehumidification, ventilation), the Jet Cool mode is operated.

• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.

• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C(64.4°F).

• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.

• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then operated in order that the air outflow could reach further.

■

Auto Restarting Operation

• When the power is restored after a sudden power failure while in appliance operation, the mode before the power failure is kept on the memory and the appliance automatically operates in the mode on the memory.

Service Manual 43

Operation

■

Forced Operation

• To operate the appliance by force in case that the remote control is lost, the forced operation selection switch is on the main unit of the appliance to operate the appliance in the standard conditions.

• When the power is supplied while the slide switch is on the forced operation position, or when the slide switch position is switched to the Auto Restarting (or test operation) position or switched from the remote control position to the forced operation position while the power is on, the forced operation is carried out.

• When the slide switch position is switched from the forced operation position to the Auto Restarting position or the remote control position, the forced operation is canceled and the appliance stops operating.

• In the forced operation mode, the indoor fan is operated at low speed for around 15 sec and then the operation condition is set according to the intake air temperature as follows.

24°C(75.2°F)

≤

Intake Air Temp

21°C(69.8°F)

≤


➲

➲

Cooling Mode Operation, 22°C(71.6°F), High Speed

Dehumidification Operation, 23°C(73.4°F), High Speed


➲

Heating Mode Operation, 24°C(75.2°F), High Speed

■

Buzzer Sounding Operation

• When the appliance-operation key is input by the remote control, the short "beep-beep-" sounds.

• When the appliance-pause key is input by the remote control, the long "beep—" sounds.


Operation

Function of Indoor Unit

Split Type Indoor Unit

Operation ON/OFF by Remote controlle r

Sensing the Room Temperature

• Room temperature sensor. (THERMISTOR)

Room temperature control

• Maintains the room temperature in accordance with the Setting Temp.

Starting Current Control

• Indoor fan is delayed for 5 seconds at the starting.

Time Delay Safety Control

• Restarting is delayed for approx. 3 minutes.

Indoor Fan Speed Control

• High, Med, Low, Chaos, Jet Cool

Operation indication Lamps (LED)

On/Off

: Lights up during the system operation.

Sleep Mode : Lights up during Sleep Mode Auto operation.

Timer

: Lights up during Timer operation.

Defrost Mode

: Lights up during Defrost Mode or Hot Start operation (Heat pump model only)

Outdoor unit operation

: Lights up during outdoor unit operation.(Cooling model only)

Desire temperature For cooling,dehumidification,heating modes it display Destired temperature

indicator

• Cooling

• Dehumidification : 18

°

C~30

°

C(64

°

F~86

°

F) • Po : Jet Cool

• Heating

: 18

°

C~30

°

C(64

°

F~86

: 16~30

°

C(60

°

F~86

°

F)

°

F) • AI : Auto Operation

• Lo : Test Mode

Plasma

: The function illustrates its dynamic mode by using a multiple lighting system. (Optional)


• Intermittent operation of fan at low speed.

Sleep Mode Auto Control

• The fan is switched to low(Cooling), med(Heating) speed.

• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

Natural Air Control by CHAOS Logic

• The fan is switched to intermittent or irregular operation

• The fan speed is automatically switched from high to low speed.

* Airflow Direction Control

• The louver can be set at the desired position or swing up and down automatically.(Model base)

Deice (defrost) control (Heating)

• Both the indoor and outdoor fan stops during deicing.

• Hot start after deice ends.

Hot-start Control (Heating)

• The indoor fan stops until the evaporator piping temperature will be reached at 27

°

C(80.6

°

F).

"Wall Mounted Type is standard"

* Functions is dependent on model type.

Service Manual 45

Operation

Art Cool Type Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

• Room temperature sensor. (THERMISTOR)

Room temperature control

• Maintains the room temperature in accordance with the Setting Temp.

Starting Current Control

• Indoor fan is delayed for 5 sec at the starting.

Time Delay Safety Control

• Restarting is inhibited for approx. 3 minutes.

Indoor Fan Speed Control

• High, Med, Low, CHAOS, JET COOL

Operation indication Lamps (LED)

On/Off

Sleep Mode

Timer

Defrost Mode

: Lights up during the system operation.

: Lights up during Sleep Mode Auto operation.

: Lights up during Timer operation.

: Lights up during Defrost Mode or

Hot Start operation.(Heat pump model only)

: Lights up during outdoor unit operation.(Cooling model only)

Outdoor unit operation

Desire temperature For cooling,dehumidification,heating modes it display Destired temperature

indicator

• Cooling

• Dehumidification : 18

°

C~30

°

C(64

°

F~86

°

F) • Po : Jet Cool

• Heating

: 18

°

C~30

°

C(64

°

F~86

: 16~30

°

C(60

°

F~86

°

F)

°

F) • AI : Auto Operation

• Lo : Test Mode

PLASMA

: Indicate PLASMA purifier operation.


• Intermittent operation of fan at low speed.

Sleep Mode Auto Control

• The fan is switched to low(Cooling), med(Heating) speed.

• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

Natural Air Control by CHAOS Logic

• The fan is switched to intermittent or irregular operation

• The fan speed is automatically switched from high to low speed.

Airflow Direction Control

• The louver can be set at the desired position or swing up and down automatically.

PLASMA

• The function will be operated while in any operation mode with selecting the function.

• The function is to be stopped while it is operating with selecting the function.

Defrost(Deice) control (Heating)

• Both the indoor and outdoor fan stops during defrosting.

Hot-start Control (Heating)

• The indoor fan stops until the evaporator pipe temperature will be reached at 28

°

C(82.4

°

F).


Operation

Function of Outdoor Unit

Outdoor Unit

Two Comp algorithm

• Inverter Comp is first priority and then Constant Comp is turning on responding to load condtion.

Operating Step

• Compressor step varies considering condition such as room temp,outdoor temp, operating room number,Temp gap between room temp and set temp and so on.

LEV Control

• LEV pulse is modulated to keep constant superheat or subcooling.

Out door Fan Control

• Outdoor fan operates at High or Off to respond to the load condition.

R/Valve Control(Heating Model Only)

• Convert R/Valve to change cooling to heating, heating to cooling.

Defrost Function

• After 45 min heating operation, check the defrost condition and if outdoor pipe temp is below -

5

°

C(23

°

F) and released from deice operation in case outdoor pipe temp is over 12

°

C(53.6

°

F) or 9 min cooing mode.

• To deice outdoor heat exchanger in low temp condtion, convert operating mode from heating to

Oil Return System

• In single(one) comp operation duration, another comp will operate for 30 seconds every 1 hours.

Comp Overload Protection

• To protect comp from being overload, protector will turn off the comp.

High Pressure Protction

• If cycle pressure is too high(around 36.7 kgf/cm 2 ), it will turn off comp A

Service Manual 47

Operation

Remote Control Operation

The Remote Controller transmits the signals to the system.

5

6

4

2

7

11

8

13

14

Signal transmitter

ON

CANCEL

OFF SET

AUTO CLEAN

°

C/

°

F

Flip-up door

(opened)

Operation Mode

Cooling Operation

Auto Operation

Healthy Dehumidification Operation

Heating Operation

• Cooling Model( ), Heat Pump Model( )

1

3

10

9

16

12

17

18

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

START/STOP BUTTON

Operation starts when this button is pressed and stops when the button is pressed again.

OPERATION MODE SELECTION BUTTON

Used to select the operation mode.

(Heat Pump) (Cooling Only)

ROOM TEMPERATURE

SETTING BUTTONS

Used to select the room temperature.

INDOOR FAN SPEED SELECTOR

Used to select fan speed in four steps low, medium, high and CHAOS.

JET COOL

Used to start or stop the speed cooling/heating.

(Speed cooling/heating operates super high fan speed.)

CHAOS SWING BUTTON

Used to stop or start louver movement and set the desired up/down airflow direction.

ON/OFF TIMER BUTTONS

Used to set the time of starting and stopping operation.

TIME SETTING BUTTONS

Used to adjust the time.

TIMER SET/CANCEL BUTTON

Used to set the timer when the desired time is obtained and to cancel the Timer operation.

SLEEP MODE AUTO BUTTON

Used to set Sleep Mode Auto operation.

AIR CIRCULATION BUTTON

Used to circulate the room air without cooling or heating.

ROOM TEMPERATURE CHECKING BUTTON

Used to check the room temperature.

PLASMA(OPTIONAL)

Used to start or stop the plasma-purification function.

RESET BUTTON

Initialize remote controller.

2nd F Button

Used prior to using modes printed in blue at the bottom of buttons.

AUTO CLEAN

Used to set Auto Clean mode.

˚C TO ˚F SWITCHING BUTTON

Used to switch temperature reading from Centigrade to Fahrenheit.

18

HORIZONTAL AIRFLOW DIRECTION CONTROL BUTTON (NOT ON

ALL MODELS)

Used to set the desired horizontal airflow direction.


Disassembly

Indoor Unit

Split Type Indoor Unit

Disconnect the unit from power supply before making any checks.

Be sure the power switch is set to “OFF”.

To remove the Grille from the Chassis.

• Set the up-and-down air discharge louver to open position (horizontally) by finger pressure.

• Remove the securing screws.

• To remove the Grille, pull the lower left and right side of the grille toward you (slightly tilted) and lift it straight upward.

1. Before removing the control box, be sure to take out the wire screwed at the other end.

Earth

Conductor

Disassembly

Service Manual 49

Disassembly

2. To remove the Control Box.

• Remove securing screws.

• Pull the control box out from the chassis carefully.

3. To remove the Discharge Grille.

• Unhook the discharge grille and pull the discharge grille out from the chassis carefully.

Screw

4. To remove the Evaporator.

• Remove 3 screws securing the evaporator(at the left 2EA in the Eva Holder, at the right 1EA).

• When repair, do not damage the Caution label.


Disassembly

• Unhook the tab on the right inside of the chassis at the same time, slightly pull the evaporator toward you until the tab is clear of the slot.

5. To remove the Motor Cover

• Remove 2 securing screw.

• Pull the motor cover out from the chassis carefully.

6. To remove the Cross-Flow Fan

• Loosen the screw securing the cross-flow fan to the fan motor (do not remove).

• Lift up the right side of the cross-flow fan and the fan motor, separate the fan motor from the cross-flow fan.

• Remove the left end of the cross-flow fan from the self-aligning bearing.

Motor cover

Bearing

Cross-flow fan

Service Manual 51

Disassembly

Art Cool Type Indoor Unit

CAUTION: Disconnect the unit from power supply before making any checks.

Be sure the power switch is set to

“OFF”.

1. To remove the Grille from the Chassis.

- Pull the grille bottom, the remove 2 securing screws.

- Lift the both lower parts of panel front.

- After pull down this panel a bit, separate connecting wire with product.

2. To remove the Control Box.

- Before removing the control box, be sure to disconnect the wires from PWB.

- Pull the cover control out from the control box and disconnect other wires.

- Remove securing screws.

- Pull the control box out from the chassis carefully.

Panel Front

Connector

Step Motor Connectors

Sensor Connector

4Way/Fan Connector

Comp Connector

Power Connector

Power Connector

Comp Connector

Motor

Connector


Disassembly

3) To remove the Evaporator.

- Remove 4 screws securing the evaporator.

- Pull the evaporator out from the chassis carefully.

4) Before removing the Turbo Fan.

- Remove the securing screws from the chassis.

- Pull the pipe cover, top cover and the air guide.

Top Cover

Air Guide

Pipe Cover

5) To remove the Motor.

- Remove the securing bolt from the motor shaft.

- Pull the fan out from the motor shaft.

- Remove 4 screws securing motor mount from the chassis and lift up the motor mount and the bracket.

Turbo Fan

Bracket

Bolt Motor Mount

Service Manual 53

Schematic Diagram

Schematic Diagram

Electronic Control Device

1. Indoor Unit

1) Split Type


2) Art Cool Type

10V 220

BL PK YL

OR RD

BL PK YL

OR RD

Schematic Diagram

5V

FG

AVdd1

AVss

RD

OR YL PK BL

RD

OR YL PK BL

Service Manual 55

Schematic Diagram

2. Outdoor Unit


Schematic Diagram

Service Manual 57

Schematic Diagram

Wiring Diagram

1. Room Type Indoor Unit -S4/SE chassis 2. Art Cool Type Indoor Unit

3. Outdoor Unit

1. A3UH363FA0(LMU360HE) 2. A3UC363FA0(LMU360CE)


Components Locations

1. Indoor Unit

MAIN P.C.B ASM

1) Split Type

• TOP VIEW

PCB :6870A90409B

ASSY:6871A20771

6871A20782

• BOTTOM VIEW

Schematic Diagram

Service Manual 59

Schematic Diagram

2) Art Cool Type

• TOP VIEW

• BOTTOM VIEW


2. Display ASSEMBLY

1) Split Type (6871A20680)

2) Art Cool Type (6871A20462)

TOP VIEW

BOTTOM VIEW

Schematic Diagram

Service Manual 61

Schematic Diagram

3. Outdoor Unit

1) Component side


2) Solder side

Schematic Diagram

Service Manual 63

Troubleshooting Guide

Troubleshooting Guide

Refrigeration Cycle Diagram

1. A3UH363FA0(LMU360HE)

Field Piping

Gas

Ø9.52

Room C

Ø9.52

Room B

Ø9.52

Room A

Header

High pressure S/W

Th1 Th2

OUTDOOR UNIT

Th3

Heat

Exchanger

Field Piping

Liquid

Ø6.35

Room C

Ø6.35

Room B

Ø6.35

Room A

LEV-C

LEV-B

LEV-A

Refrigerant Flow

Cooling

Th1: Discharge thermistor


Th3: Outdoor temperature thermistor

2. A3UC363FA0(LMU360CE)

Field Piping

Gas

Ø9.52

Room C

Ø9.52

Room B

Ø9.52

Room A

Header

High pressure S/W

OUTDOOR UNIT

Th3

Th1 Th2

Heat

Exchanger

Field Piping

Liquid

Ø6.35

Room C

Ø6.35

Room B

Ø6.35

Room A

Refrigerant Flow

Cooling

Heating



Th3: Outdoor temperature thermistor

Th4: Defrost thermistor


LEV-C

LEV-B

LEV-A

Th4


Self-diagnosis Function

■

Error Indicator

• The function is to self-diagnoisis airconditioner and express the troubles identifically if there is any trouble.

• Error mark is ON/OFF for the operation LED of evaporator body in the same manner as the following table.

• If more than two troubles occur simultaneously, primarily the highest trouble fo error code is expressed.

• After error occurrence, if error is released, error LED is also released simultaneously.

• To operate again on the occurrence of error code, be sure to turn off the power and then turn on.

• Having or not of error code is different from Model.

LED1 LED2

Indoor Error

Error code

06

07

10

00

01

02

05

Description

No Error

Indoor Room Thermistor Error

Indoor In-Piping Error

Communication Error between In and Out

Indoor Out-Piping Error

Differnt mode operation

Indoor fan motor locked error

MPS Variable LED1

1 time

2 times

5 times

6 times

7 times

LED2

1 times

Indoor Status

ON

OFF

OFF

OFF

OFF

OFF

OFF

Outdoor Error

Error code

33

44

45

47

51

Description

D-Pipe High(Normal)

Outdoor Air Thermistor Error(Open/Short)

Cond Pipe Thermistor Error(Open/Short)

Const. D-Pipe Thermistor Error(Open/Short)

Capcity Error(High/Low)

MPS Variable LED1(Red) LED2(Green) Indoor Status

3 times

4 times

4 times

4 times

5 times

3 times

4 times

5 times

7 times

1 times

OFF

OFF

OFF

OFF

OFF

Service Manual 65


Cycle Troubleshooting Guide

Trouble analysis

1. Check temperature difference between intake and discharge air, and operating current.

Temp. difference : approx. 0°C(32°F)

Current : less than 80% of rated current

All amount of refrigerant leaked out.

Check refrigeration cycle.

Temp. Difference

Temp. difference : approx. 8°C(46.4°F)

Current : less than 80% of rated current

Refrigerant leakage

Clog of refrigeration cycle

Defective compressor

Operating Current

Temp. difference

Current

: less than 8°C(46.4°F)

: near the rated current

Excessive amount of refrigerant

Temp. difference : over 8°C(46.4°F)

Normal

Notice:

Temperature difference between intake and discharge air depends on room air humidity. When the room air humidity is relatively higher, temperature difference is smaller. When the room air humidity is relatively lower temperature difference is larger.

2. Check temperature and pressure of refrigeration cycle.

Suction pressure

(Compared with

Temperature

(Compared with the normal value) the normal value)

High

Higher

Normal

Cause of Trouble

Defective compressor

Description

Current is low.

Lower Higher

Excessive amount of refrigerant

Insufficient amount of refrigerant(Leakage)

Clogging

High pressure does not quickly rise at the beginning of operation.

Current is low.

Notice:

1. The suction pressure is usually 4.5~6.0 kg/cm

2

G at normal condition.

2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty.


Electronic Parts Troubleshooting Guide

❇

Refer to electronic contorol device drawing & schematic diagram.

Trouble 1

The Product doesn’t operate at all.

Turn off the main power and wait until LED on outdoor PCB is off.


Turn on the main power again.

Does "Beeping" sound is made from the indoor unit?

NO

Check the voltage of power(AC208V/AC230V, 60Hz).

• The voltage of main power.

• The voltage applied to the unit.

• The connecting method of Indoor/Outdoor connecting cable (each color)

• The P.W.B. Ass'y

(Fuse, Noise Filter, Power Transformer, IC01D, IC02D, etc.)

YES

• Primarily, the operating condition of Micom is O.K.

• Check CN-DISP1

The operation check of the P.C.B. Ass'y

Procedure

1) The input voltage of power transformer.

2) The output voltage of power transformer.

3) IC01D(7812)

4) IC02D(7805)

5) IC01A(KIA7036)

Specification

1) AC230V ± 30V

: Check the rated voltage

2) 15V ± 1.5V

3) DC12V

4) DC5V

5) The voltage of micom pin 29

: DC4.5V

↑

Remedy

1) Replace power transfomer.

2) Replace power transfomer.

3) Replace IC01D.

4) Replace IC02D.

5) Replace IC01A.

Service Manual 67


Trouble 2

Product doesn't operate with the remote controller.

Turn on main power.

While the compressor has been stopped, the compressor does not operate owing to the delaying function for 3 minutes after stopped.

When the compressor stopped Indoor Fan is driven by a low speed.

At this point the wind speed is not controlled by the remote controller.

(When operated in the Sleeping Mode, the wind speed is set to the low speed as force.)

Caused by the remote controller.

Caused by other parts except the remote controller

When the mark ( ) is displayed in LCD screen, replace battery.

Check the contact of CN-DISP 1 connector

When the detect switch (double key) inside the remote controller door is fault, it is impossible to operate temperature regulating(

▲

/

▼

) and wind speed selecting.

Check DISP PWB Ass'y

-Voltage between CN1

➀

-

➆

: DC +5V

Check the Display PWB Ass'y • Check receiver ass'y


Trouble 3


The Compressor/Outdoor Fan are don't operate

Turn on the main power.

Operate Cooling Mode by setting the disired temperature of the remote controller is less than one of the Indoor temperature by 1°C at least.

When in air circulation mode, compressor/outdoor fan is stopped.

Check the sensor for Indoor temperature is attatched as close as to be effected by the themperature of Heat Exchange (EVA.)

When the sensor circuit for Indoor temperature and connector are in bad connection or are not engaged, Compressor/Outdoor fan is stopped.

• Check the related circuit of R01H(1K), R02H(1K), R03H(1K), R04H(1K), Micom(pin No.

74 ,

75 , 76 , 77

).

• Check the Indoor temperature sensor is disconnected or not (about 10K at 25°C).

Check the Relay(RY-PWR, RY-START) for driving Compressor.

• Check the voltage between brown and blue cable of terminal to connect the Outdoor

(About AC208V / 230V).

• Check the related circuit of relay in Outdoor PCB Ass'y.

Comp. ON Comp. OFF Check Point

Between Micom(No. 50,51) and

GND

Between IC01M(No. 10) and

GND

DC 5V

DC 1V

↓

DC 0V

DC 12V

Turn off main power.

Check the electrical wiring diagram of Outdoor side.

Check the open or short of connecting wires between Indoor and Outdoor.

Service Manual 69


Trouble 4

When indoor Fan does not operate.

When indoor Fan does not operate.

Does the voltage of each terminals of CN-MOTOR CONNECTOR in

Indoor unit corresponds to values in the Table of page 69

Does the voltage of terminal of CN-DC/DC CONNECTOR in

Indoor unit corresponds to the values in the table of page 56

Check connecting condition of the CN-MOTOR CON-

NECTOR

Do the voltage of terminal of

CN-DC/DC CONNECTOR in

Outdoor unit corresponds to the values in the table of page 56

Check the pattern and the condition of Indoor unit PWB

Ass'y.

Check the interference of Indoor Fan.

NO

Check the patterns and the conditions of outdoor unit

PWB Assy's.

YES

Check the connecting condition and disconnection of connecting wires between

Indoor and Outdoor unit.

Check the motor of Indoor Fan

Indoor Fan may be stopped in the Soft Dry Mode(change to the Cooling Operation Mode).

Indoor Fan is to be stopped when Indoor pipe(coil) termperature is lower than 79°F.

(At that times, Defrost indicator is turned on)


Trouble 5

When the louver does not operate.

When Vertical Louver does not operate.

• Confirm that the Vertical Louver is normally geared with the shaft of

Stepping Motor.

• If the regular torque is detected when rotating the Vertical Louver with hands Normal


• Check the connecting condition of CN-UP/DOWN Connector

• Check the soldering condition(on PWB) of CN-UP/DOWN Connector

Check the operating circuit of the Vertical Louver

• Confirm that there is DC +12V between pin (RED) of CN-UP/DOWN and

GND.

• Confirm that there is a soldering short at following terminals.

- Between

60

,

61

,

62 and

63 of MICOM

- Between

2

,

3

,

4 and

5 of IC01M

- Between

12

,

13

,

14

,

15 of IC01M

- Between

1

,

2

,

3

,

4 and

5 of CN-UP/DOWN

If there are no problems after above checks

• Confirm the assembly conditions that are catching and interfering parts in the rotation radial of the Vertical Louver

Service Manual 71


Error Code

■

Trouble Shooting

Error code

Title

01 Indoor air sensor

02 Indoor inlet pipe sensor

06 Indoor outlet pipe sensor

Cause of error

• Open / Short

• Soldered poorly

• Internal circuit error

• Open / Short

• Soldered poorly


• Open / Short

• Soldered poorly


Check point & Normal condition

Normal resistor : 10K

Ω

/ at 25°C (Unplugged)

Normal voltage : 2.5Vdc / at 25°C (plugged)


Ω




Ω



10K

Ω

Ω

2.5Vdc

V

Check the resistance / voltage

❑

Check Point

1. Unplug the sensor on Indoor unit PCB.

2. Estimate the resistance of each sensor

3. If the resistance of the sensor is 10K

Ω

/5K

Ω at 25°C, then sensor is normal

4. If the resistance of the sensor is 0 K

Ω or

∞

, then sensor is abnormal.

➔

Change the sensor.

5. Plug the sensor on Indoor unit PCB and Power ON.

6. Estimate the voltage of each sensor.

7. If the voltage of the sensor is 2.5Vdc / at 25°C, then sensor is normal.

8. If the resistance of the sensor is 0 or 5Vdc, then sensor is abnormal.

➔

Repair or Change the PCB


Error code

Title

05 / 53

Communication

(Indoor

➔

Outdoor)


Cause of error Check point & Normal condition

• Communication poorly

• Power input AC 230V.(Outdoor, Indoor)

• The connector for transmission is disconnected.

• The connecting wires are misconnected.

• The GND 1,2 is not connected at main GND.

• The communication line is shorted at GND.

• Transmission circuit of outdoor PCB is abnormal.

• Transmission circuit of indoor PCB is abnormal.

❑

Check Point

1. Check the input power AC 230V.(Outdoor, Indoor)

2. Check the communication wires are correctly connected.

➔

Adjust the connection of wire

➔

Confirm the wire of "Live", "Neutral".

3. Check the resistance between communication line and GND.(Normal : Over 2M

Ω

)

4. Check the connector for communication is correctly connected.

5. Check the connection of GND1, GND2, and main GND.

6. If one indoor unit is operated normally, outdoor PCB is no problem.

➔

Check the another indoor unit.

* CH05 is displayed at indoor unit, CH53 is displayed at outdoor unit.

Service Manual 73


Error code

Title

33 D-Pipe Temp. High

Cause of error

• Discharge sensor temp. high


• Check the discharge pipe sensor.

• Check the install condition for over load.

• Check the leakage of refrigerent.

• Check the SVC V/V open.

115

°

C(239

°

F)

100

°

C(212

°

F)

95

°

C(203

°

F)

COMP OFF

LEV OPEN(16PULSE/MIN)

LEV OPEN(10PULSE/MIN)

NORMAL

A3UH363FA0(LMU360HE)/A3UC363FA0(LMU360CE)

❑

Check Point

1. Check the install condition for over load.

2. Check the SVC V/V open.

3. Check the leakage of refrigerent.

4. Check the constant compressor.

Error code

Title

51 Capacitor error

Cause of error Check point & Normal condition

• Over Capacitor combination

• Check the indoor unit capacity.

• Check the combination table

❑

Check Point

1. Check the indoor unit capacity.

2. Check the combination table.

★

In the tropical model case

➔ single cycle has no error for over capacity.


Error code

44

Title

Outdoor air sensor

45 Condensor pipe sensor

47 D-Pipe sensor


Cause of error

• Open / Short

• Soldered poorly


• Open / Short

• Soldered poorly


• Open / Short

• Soldered poorly




Ω

/ at 25°C(77°F) (Unplugged)

Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged)


Ω




Ω



Ω

Ω

Check the resistance

❑

Check Point

1. Estimate the resistance of each sensor.(Unplugged)

2. Estimate the voltage of each sensor.(Plugged)

3. If the resistance is 0V or 5Vdc, then sensor is abnormal

Service Manual 75

2-way, 3-way Valve

2-way, 3-way Valve

2-way Valve (Liguid Side) 3-way Valve (Gas Side)

Works

Shipping

1.

Air purging

(Installation)

Operation

2.

Pumping down

(Transfering)

3.

Evacuation

(Servicing)

4.

Gas charging

(Servicing)

5.

Pressure check

(Servicing)

6.

Gas releasing

(Servicing)


Shaft position

Closed

(with valve cap)

Open

(counter-clockwise)

Open

(with valve cap)

Closed

(clockwise)

Open

Open

Open

Open

Flare nut

Hexagonal wrench

(4mm)

Open position

Closed position

To piping connection

To outdoor unit

Valve cap

Flare nut

Open position

Closed position

Pin

To piping connection

Service port cap

Service port

To outdoor unit

Shaft position

Closed

(with valve cap)

Closed

(clockwise)

Open

(with valve cap)

Open

(counter-clockwise)

Open

Open

Open

Open

Service port

Closed

(with cap)

Open

(push-pin or with vacuum pump)

Closed

(with cap)

Open

(connected manifold gauge)

Open

(with charging cylinder)

Open


Open


Open



(1) Pumping down

Indoor unit

Liquid side

2-Way valve

Close

Gas side

3-Way valve

Open

Outdoor unit

Indoor unit

Liquid side

2-Way valve

Close manifold gauge

Gas side

3-Way valve

Open

Lowhandle

(CLOSE)

Hi- handle

(CLOSE)

•

Procedure

1. Confirm that both the gas side and liquid side valves are set to the open position.

- Remove the valve stem caps and confirm that the valve stems are in the raised position.

- Be sure to use a hexagonal wrench to operate the valve stems.

2. Operate the unit for 10 to 15 minutes.

6. Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 1kg/cm

2 g.

7. Immediately set the gas side valve to the closed position.

- Do this quickly so that the gauge ends up indicating 1kg/ g.

3. Stop operation and wait for 3 minutes, then connect the manifold gauge to the service port of the gas side valve.

- Connect the hose of the gauge with the push pin to the service port.

4. Air purging of the charge hose.

- Open the Low-handle valve on the gauge slightly to air purge from the hose.

8. Disconnect the charge set, and mount the liquid side and gas side valve caps and the service port nut.

- Use torque wrench to tighten the service port nut to a torque of 1.8kg.m.(4.2kg.m/5.5kg.m)

- Be sure to check for gas leakage.

5. Set the liquid side valve to the closed position.

• Be sure to short pressure S/W. otherwise Low pressure S/W detect low pressure skete and stops the compressor.

Service Manual 77


(2) Evacuation

(All amount of refrigerant leaked)

Indoor unit

Liquid side

2-Way valve

Open

Gas side

3-Way valve

Open

Outdoor unit

Indoor unit

Liquid side

2-Way valve

Open

Vacuum pump

Lowhandle

(OPEN) manifold gauge

Gas side

3-Way valve

Open

Hi- handle

(OPEN)

• Procedure

1. Confirm that both the liguid side valve and gas side valve are set to the opened position.

2. Connect the vaccum pump to the center hose of the manifold gauge.

3. Connect the service port of the gas side valve to the low side of the gauge.

4. Evacuation for approximately one hour.

- Confirm that the gauge needle has moved toward-76 cmHg (vacuum of 4 mmHg or less).

5. Close the Low handle of the gauge turn off the vacuum pump, and confirm that the gauge needle does not move(approximately 5 minutes after turning off the vacuum pump).

6. Disconnect the charge hose from the vacuum pump.

- Vacuum pump oil.

If the vacuum pump oil becomes dirty or depleted,replenish as needed.

7. Mount the valve caps and the service port caps.



(3) Gas Charging

(After Evacuation)

Indoor unit

Liquid side

2-Way valve

Open

Gas side

3-Way valve

Open

Outdoor unit

Indoor unit

Liquid side

2-Way valve

Open

Charging cylinder

Low-handle

Check valve

(OPEN) manifold gauge

Gas side

3-Way valve

Open

Hi- handle

(OPEN)

• Procedure

1. Connect the gauge to the charging cylinder.

- Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder.

- If you are using a gas cylinder, also use a scale and reverse the cylinder so that the system can be charged with liquid.

2. Purge the air from the charge hose.

- Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air. (Be careful of the liquid refrigerant). The procedure is the same if using a gas cylinder.

3. Open the low handle on the gauge and charge the system with liquid refrigerant.

- If the system can not be charged with the specified amount of refrigerant, it can be charged with a little at a time (approximately 150g each time) while operating the air conditioner in the cooling cycle; however, one time is not sufficient, wait approximately 1 minute and then repeat the procedure(pumping down-pin).

4. Immediately disconnect the charge hose from the gas side valve's service port.

This is different from previous procedures.

Because you are charging with liquid refrigerant from the gas side, absolutely do not attempt to charge with larger amounts of liquid refrigerant while operating the air conditioner.

- Stopping partway will allow the gas to be discharged.

- If the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose.

5. Mount the valve stem nuts and the service port nut.

- Use torque wrench to tighten the service port nut to a torque of 1.8 kg.m.(4.2kg.m/5.5kg.m.)

- Be sure to check for gas leakage.

Service Manual 79

Exploded View & Replacement Parts List

Exploded View & Replacement Parts List

Indoor Unit

S4, SE chassis

135311

152302-1

152302-2

135301

131410 733010

152313

342800

354210

359011

135312

159901

268712

352150

147582

267110


146811

249951

268714

668713

35211B

263230-2 263230-1

135500

346810

135516


Parts List (S4, SE chassis)

PART No.

LOCATION

No.

DESCRIPTION

S4 chassis

AMNH093D4A0

(LMN090HE)

AMNC093D4A0

(LMN090CE)

SE chassis

AMNH123DEA0

(LMN120HE)

AMNC123DEA0

(LMN120CE)

131410 CHASSIS ASSEMBLY 3141A20019C 3141A20019C

135311 GRILLE ASSEMBLY,FRONT(INDOOR) 3531A14003K 3531A14003K

135301 GRILLE,FRONT

152302-1 FILTER,AIR

3530A10253A

5230A20051B

3530A10253A

5230A20051B

152302-2 FILTER,AIR 5230A20051D 5230A20051D

135312 GRILLE ASSEMBLY,DISCHARGE(INDOOR) 3531A11307A 3531A10307V

159901 LOUVER,HORIZONTAL

147582 LOUVER,VERTICAL

5990A20069A

4758A30052A

5990A20069A

4758A30052A

146811 MOTOR,DC

268712 PCB ASSEMBLY,DISPLAY

135516 COVER ASSEMBLY,MOTOR

346810 MOTOR,DC

4681A20055A

6871A20680D

4681A20055A

6871A20680F

3551A20156B 3551A20156B

4681AR2295L 4681AR2295L

152313 FILTER ASSEMBLY,DEODORIZER 5231A20040A

249951 CASE ASSEMBLY,CONTROL(INDOOR) 4995A20831A

268714 PCB ASSEMBLY,MAIN

668713 PCB ASSEMBLY(OPTION PCB)

6871A20782A

6871A20989A

5231A20040A

4995A20831A

6871A20782A

6871A20989D

263230-1 THERMISTOR,NTC

263230-2 THERMISTOR,NTC

267110 REMOTE CONTROLLER ASSEMBLY

342800 BEARING

354210 EVAPORATOR ASSEMBLY,FINAL

35211B TUBE ASSEMBLY,TUBING

352150 HOSE ASSEMBLY,DRAIN

359011 FAN ASSEMBLY,CROSS FLOW

733010 PLATE ASSEMBLY,INSTALLATION

135500 COVER

3141A20034A

3531A18015A

3530A10287A

5230A20064A

5230A20064A

3531A11362A

5990A20068A

4758A30057A

4681A20055A

6871A20680D

3551A20156B

4681AR2295L

5231A20040K

4995A20831A

6871A20782A

6871A20989B

3141A20034A

3531A18015A

3530A10287A

5230A20064A

5230A20064A

3531A11362B

5990A20068A

4758A30057A

4681A20055A

6871A20680F

3551A20156B

4681AR2295L

5231A20040K

4995A20831A

6871A20782A

6871A20989C

6323AQ3226T 6323AQ3226T 6323AQ3226T 6323AQ3226T

6323A20004A 6323A20004A 6323A20004A 6323A20004A

6711A20128C

4280A20004B

6711A20128A

4280A20004B

6711A20128C

4280A20004B

6711A20128A

4280A20004B

5421A20222C 5421A20222C

5211A21363E 5211A21363E

5251A20011B

5901A20017F

5251A20011B

5901A20017F

3301A20020C 3301A20020C

3550A30262A 3550A30262A

5421A20282A

5211A15008A

5251A20011G

5901A20017H

3301A20020A

3550A30315A

5421A20282A

5211A15008A

5251A20011G

5901A20017H

3301A20020A

3550A30315A

SVC

CODE

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

NOTE)

*

Please ensure GCSC since these parts may be changed depending upon the buyer's request.

(GCSC WEBSITE http://biz.LGservice.com)

Service Manual 81


SP3 Chassis Art Cool Type



Parts List (SP3 chassis)

LOCATION

No.

DESCRIPTION

PART No.

AMNH093APM0

(LMAN090HNS)

AMNC093APM0

(LMAN090CNS)

AMNH123APM0

(LMAN120HNS)

AMNC123APM0

(LMAN120CNS)

SVC

CODE

131410 CHASSIS ASSEMBLY 3141A20030C 3141A20030C 3141A20030C 3141A20030C

135312 GRILLE ASSEMBLY,FRONT(INDOOR) 3531A21035N 3531A21035T 3531A21035N 3531A21035T

135314 GRILLE ASSEMBLY,INLET

152302 FILTER, AIR

3531A20212K

5230A20032A

3531A20212K

5230A20032A

3531A20212K

5230A20032A

3531A20212K

5230A20032A

268712 PCB ASSEMBLY,DISPLAY

268717-1 PCB ASSEMBLY,SUB

268717-2 PCB ASSEMBLY,SUB

135500-1 COVER

6871A20462A

6871A20259B

6871A20363D

3550A20123C

6871A20462B

6871A20259B

6871A20363D

3550A20123C

6871A20462A

6871A20259B

6871A20363D

3550A20123C

6871A20462B

6871A20259B

6871A20363D

3550A20123C

135500-2 COVER

135500-3 COVER

3550A20124B 3550A20124B 3550A20124B 3550A20124B

3550A20060A 3550A20060A 3550A20060A 3550A20060A

135515 COVER ASSEMBLY,TOP(INDOOR) 3551A20031H 3551A20031H 3551A20031H 3551A20031H

147581 LOUVER,HORIZONTAL 4758A20014B 4758A20014B 4758A20014B 4758A20014B

146811 MOTOR,DC

159830 FILTER ASSEMBLY,AIR CLEANER

4681A20055A 4681A20055A 4681A20055A 4681A20055A

5983A20007F 5983A20007F 5983A20007F 5983A20007F

249951 CASE ASSEMBLY,CONTROL(INDOOR) 4995A20832B 4995A20832A 4995A20832D 4995A20832C

268714 PCB ASSEMBLY 6871A20387K 6871A20387M 6871A20387M 6871A20387N

263230-2 THERMISTOR,NTC(ROOM+IN PIPE) 6323A20004N 6323A20004N 6323A20004N 6323A20004N

263230-1 THERMISTOR,NTC(OUT PIPE) 6323AQ3226T 6323AQ3226T 6323AQ3226T 6323AQ3226T

267110 REMOTE CONTROLLER ASSEMBLY 6711A20128F 6711A20083R 6711A20128F 6711A20083R

330870 PAN ASSEMBLY,DRAIN 3087A30004A 3087A30004A 3087A30004A 3087A30004A

346810 MOTOR,UNCLASSIFIED

349600 BRACKET,MOTOR

35211B TUBE ASSEMBLY,TUBING

352150 HOSE ASSEMBLY,DRAIN

354210 EVAPORATOR ASSEMBLY,FIRST

359012 FAN,TURBO

4681A20047B

4960A20016A

5211AR7066F

5251AR1222R

5421A20072A

5900A00003A

4681A20047B

4960A20016A

5211AR7066F

5251AR1222R

5421A20072A

5900A00003A

4681A20047B

4960A20016A

5211AR7066F

5251AR1222R

5421A20072A

5900A00003A

4681A20047B

4960A20016A

5211AR7066F

5251AR1222R

5421A20072A

5900A00003A

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

NOTE)

*



Service Manual 83


Outdoor Unit

A3UH363FA0(LMU360HE), A3UC363FA0(LMU360CE)



Parts List (A3UH363FA0(LMU360HE), A3UC363FA0(LMU360CE))

LOCATION

No.

DESCRIPTION

PART No.

A3UH363FA0(LMU360HE) A3UC363FA0(LMU360CE)

SVC

CODE

135301 GRILLE,DISCHARGE

135314 GRILLE,REAR

263230-1 THERMISTOR, NTC

263230-2 THERMISTOR, NTC

430410 BASE ASSEMBLY, OUTDOOR

435511 COVER ASSEMBLY,CONTROL(OUTDOOR)

435512 COVER ASSEMBLY,TOP(OUTDOOR)

437211 PANEL ASSEMBLY,FRONT(OUTDOOR)

447910 BARRIER ASSEMBLY,OUTDOOR

546810 MOTOR ASSEMBLY,OUTDOOR

548490 ACCUMULATOR ASSEMBLY(MECH)

552112 TUBE ASSEMBLY,CONDENSER IN

552113 TUBE ASSEMBLY, CONDENSER OUT

552116 TUBE ASSEMBLY, REVERSING

552117 TUBE ASSEMBLY, SUCTION(OUTDOOR)

554031 CONDENSER ASSEMBLY, BENDING

3530A20006G

3530A10176B

6323A20028A

6323A20026A

3041AP2741H

3551A10044G

3H03266H

3721A10109C

4791A10019B

4681AR1392X

4848A20006L

5211A11010A

5211A12001A

AJR30111101

AJR30125001

5403A20168A

3530A20006G

3530A10176B

6323A20028A

6323A20026A

3041AP2741H

3551A10044H

3H03266H

3721A10109C

4791A10019B

4681AR1392X

4848A20006L

5211A11010A

5211A12001A

AJR30111101

AJR30125001

5403A20168C

559010 FAN ASSEMBLY, PROPELLER

561410 COIL ASSEMBLY, REVERSING VALVE

649950 CASE ASSEMBLY,CONTROL(OUTDOOR)

668711-1 PWB(PCB) ASSEMBLY,MAIN(AC)

668711-2 PWB(PCB) ASSEMBLY,MAIN(OUTDOOR)

137213-1 PANEL ASSEMBLY, SIDE

137213-2 PANEL ASSEMBLY, SIDE

552203-1 VALVE,SERVICE

5901A10033A

3A02028Z

4995A00002H

6871A20500B

6871A20479E

3721A10110A

3721A10111C

5220A20001K

5901A10033A

-

4995A00002H

6871A20500B

6871A20479E

3721A10110A

3721A10111C

5220A20001K

552203-2 VALVE,SERVICE

554160-1 COMPRESSOR

554160-2 COMPRESSOR

561411-1 DRAWING,ASSEMBLY(EEV COIL)

2H02479J

2520UHGK2AA

TBZ30111701

6877A20050A

2H02479J

2520UHGK2AA

TBZ30111701

6877A20050A



W0CZZ-1 CAPACITOR,FILM,BOX 0CZZA20007Q

W0CZZ-2 CAPACITOR,FILM,BOX 2H01451S

567502 O.L.P

6877A20050B

6877A20050C

6877A20050B

6877A20050C

0CZZA20007Q

2H01451S

R

R

6750U-L048A 6750U-L048A R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

NOTE)

*



Solenoid(Coil Assembly, Reverse) is only for heat pump model.

Service Manual 85

P/No.: 3828A20474C

May, 2006

Printed in Korea

LG Electronics AMNC093D4A0(LMN090CE) Air Conditioner User Manual

Multi Type Air Conditioner

SERVICE MANUAL

MODEL

Multi type Air Conditioner Service Manual

TABLE OF CONTENTS

2 Multi type Air Conditioner

Model Number Nomenclature

Indoor Unit

Outdoor Unit

Combination table

Symbols Used in this Manual

4 Multi type Air Conditioner

Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions must be followed.

Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.

WARNING

This symbol indicates the possibility of death or serious injury.

CAUTION

This symbol indicates the possibility of injury or damage to properties only.

WARNING

Installation

6 Multi type Air Conditioner

CAUTION

Installation

8 Multi type Air Conditioner

Operational

10 Multi type Air Conditioner

Dimensions

Indoor Unit

1. Split Type Indoor

2. Art Cool Type Indoor Unit

Outdoor Unit

12 Multi type Air Conditioner

Product Specifications

14 Multi type Air Conditioner

Installation

Installation Parts

Installation Tools

Select the best location

16 Multi type Air Conditioner

Piping length and elevation

Fixing Installation Plate(Standard Type)

18 Multi type Air Conditioner

Preparing work for Installation (Artcool Type Only)

INST

ALLA

TION GU

20 Multi type Air Conditioner

Flaring Work and Connection of Piping

Flaring work

Connecting the Piping

For right rear piping

22 Multi type Air Conditioner

For left rear piping

24 Multi type Air Conditioner

26 Multi type Air Conditioner

28 Multi type Air Conditioner

Connecting the Cable between Indoor Unit and Outdoor Unit

Connect the cable to the Indoor unit.

30 Multi type Air Conditioner

Connect the cable to the Outdoor unit.

Connection method of the connecting cable(Example)

32 Multi type Air Conditioner

Connect the cable to the indoor unit

Checking the Drainage, Forming the Pipings and Long Pipe Setting

Checking the drainage

34 Multi type Air Conditioner

Forming the piping

Air Purging and Evacuation

Checking method

36 Multi type Air Conditioner

Evacuation

Charging

Example:

Important:

38 Multi type Air Conditioner

Test Running

Operation

Function of control