LG AMNC093APM0, A3UH363FA0, AMNC123APM0, AMNH093APM0, AMNH123DEA0 User Manual 2

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Multi Type Air Conditioner

SERVICE MANUAL

CAUTION

website http://www.lgservice.com

• BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

• ONLY FOR AUTHORIZED SERVICE PERSONNEL.

MODEL

• Indoor Unit:

• Outdoor Unit: A3UH363FA0(LMU360HE) A3UC363FA0(LMU360CE)

Room Type

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

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

Art Cool Type

2 Multi type Air Conditioner

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

Service Manual 3

Model Number Nomenclature

Indoor Unit

Outdoor Unit

AMN H 3

4DA0

Serial Number

A3U H 336 F A 0

Electrical Ratings

MPS Variable Multi System Indoor Unit

Model Type

H: Heat Pump C: Cooling Only

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

Nominal Cooling Capacity in Btu/h

Electrical Rating

3: 1Ø, 208~230V, 60Hz

Chassis Name Indoor Unit Type

Wall mounted split

D : D- look type L : L- look type G : G- look type M : M- look type N : N- look type

Artcool type

A : standard/wide type D : Deluxe type

B : Ceiling Concealed Duct V : Ceiling & Floor(Convertible)

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

R-410A MPS Variable Multi System Outdoor Unit And No. of Connectable Indoor Units

Ex) A3U : Connectable max. 2 Indoor Units

Model Type

H: Heat Pump C: Cooling Only

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

Nominal Cooling Capacity in Btu/h

3: 1Ø, 208~230V, 60Hz

Multi Type

Function

A : Basic

F : Free Joint Multi Type

Serial Number

4 Multi type Air Conditioner

Model Number Nomenclature

Combination table

A B C Total Unit-A Unit-B Unit-C Total Unit-A Unit-B Unit-C Total (Btu/h.w) (w/w) 9 9 9000 9000 1320 5.9 6.8 9000 9000 1550 7.0 5.8 1.7

12 12 12000 12000 1320 5.9 9.1 12000 12000 1410 6.3 8.5 2.5

9 9 18 9000 9000 18000 2180 9.8 8.3 9000 9000 18000 2160 9.8 8.3 2.4 9 12 21 9000 12000 21000 2200 9.9 9.5 9000 12000 21000 2160 9.8 9.7 2.8

12 12 24 12000 12000 24000 2200 9.9 10.9 12000 12000 24000 2160 9.8 11.1 3.3

9 9 9 27 9000 9000 9000 27000 3650 16.5 7.4

9000 9000 9000 27000 3300 14.9 8.2 2.4

9 9 12 30 9000 9000 12000 30000 3650 16.5 8.2

9000 9000 12000 30000 3340 15.0 9.0 2.6

9 12 12 33 9000 12000 12000 33000 3650 16.5 9.0

9000 12000 12000 33000 3340 15.0 9.9 2.9

12 12 12 36 12000 12000 12000 36000 3680 16.6 9.8

12000 12000 12000 36000 3340 15.0 10.8 3.2

1 UNIT

COP

Operation

Combination(k Btu)

Cooling

2 UNIT

3 UNIT

Heating

Capacity (Btu/h)

Input

(W)

Current

(A)

EER

(Btu/h.w)

Capacity (Btu/h)

Input

(W)

Current

(A)

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

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.

NOTICE

Symbols Used in this Manual

Service Manual 5

Safety Precautions

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

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

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

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

WARNING

■ Installation

Be sure not to do.

Be sure to follow the instruction.

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.

• There is risk of fire or electric shock.

Install the panel and the cover of control box securely.

• There is risk of fire or electric shock.

Always install a dedicated circuit and breaker.

• Improper wiring or installation may cause fire or electric shock

Use the correctly rated breaker or fuse.

• There is risk of fire or electric shock.

WARNING

CAUTION

6 Multi type Air Conditioner

Safety Precautions

Do not modify or extend the power cable.

• There is risk of fire or electric shock.

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.

• There is risk of fire or electric shock.

Do not place anything on the power cable.

• There is risk of fire or electric shock.

Service Manual 7

Safety Precautions

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.

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.

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

• There is risk of fire or electric shock.

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.

Gasolin

8 Multi type Air Conditioner

Safety Precautions

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.

• There is risk of fire or electric shock.

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.

• There is risk of fire or electric shock.

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.

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.

CAUTION

■ Installation

90°

Service Manual 9

Safety Precautions

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.

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.

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.

■ Operational

Wax

Thinner

10 Multi type Air Conditioner

Safety Precautions

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.

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

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

• 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.

Service Manual 11

Dimensions

Indoor Unit

1. Split Type Indoor 2. Art Cool Type Indoor Unit

Pipe Hole

Fix Hole

Hanger Hole

Installation plate

W mm 840 895 570

H mm 270 282 568 D mm 153 165 129

Model

Dimension

Split Type ARTCOOL Type

S4 SE

9 kBtu/h 12 kBtu/h 9 kBtu/h 12 kBtu/h

SP3

12 Multi type Air Conditioner

Outdoor Unit

L6L7 L8

L10 L11L11 L11L11L11

Gas side 3-way valve

Liquid side 2-way valve

Dimensions

UE2 36k

MODEL

DIM

W mm 870

H mm 1038

D mm 320 L1 mm 360 L2 mm 340 L3 mm 25 L4 mm 1035 L5 mm 25 L6 mm 546 L7 mm 160 L8 mm 160 L9 mm 44

L10 mm 64.5 L11 mm 50

Service Manual 13

Product Specifications

Indoor Unit

Nominal Cooling Capacity kcal/h(W)

Btu/h

Nominal Heating Capacity kcal/h(W)

Btu/h Air Circulation H/M/L CMM(CFM) Setting temperature range(cool/heat) °C Fan motor Output W

Model Input V Running Current A

Fan Type

No. Used / Diameter EA/inch(mm)

Noise Level (Sound Press,1m)

H/M/L dBA Temperature controller Coil Tube Size (OD) inch(mm)

Fins per inch

No. of Rows & Column Dehumidification Rate l/h Dimensions (W*H*D) inch(mm) Net Weight kg(lbs) Piping Connection Liquid inch(mm)

Gas inch(mm)

Drain hose (ID Ø)mm Packing Dimension (W*H*D) inch(mm) Stuffing Quantity With(Without) S/Parts 20/40ft(hi-c)

Wall Mounted

AMNC093D4A0(LMN090CE)

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

Indoor Unit Type

Model

Note : 1.★See the page "Combination Table"

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

★

2,267(2,637) 2,267(2,637) 3,023(3,516) 3,023(3,516)

9,000 9,000 12,000 12,000

- 2,267(2,637) - 3,023(3,516)

- 9,000 - 12,000

8.2(289) 8.2(289) 9.4(332) 9.4(332) 18~30 16~30 18~30 16~30

15 15 15 15

DL-88430LGIF DL-88430LGIF DL-88430LGIF DL-88430LGIF

DC36 DC36 DC36 DC36

0.15 0.15 0.15 0.15

Cross Flow Fan Cross Flow Fan Cross Flow Fan Cross Flow Fan

1/3.74(95) 1/3.74(95) 1/3.74(95) 1/3.74(95) 31 / 29 / 22 31 / 29 / 22 36 / 32 / 29 36 / 32 / 29 Thermistor Thermistor Thermistor Thermistor

0.197(5.0) 0.197(5.0) 0.197(5.0) 0.197(5.0) 20 20 18 18

2R,15C 2R,15C 2R,15C 2R,15C

- 1.1 - 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) 7(15.4) 9.5(20.9) 9.5(20.9)

1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52)

20 20 20 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)

2,267(2,637) 2,267(2,637) 3,023(3,516) 3,023(3,516)

9,000 9,000 12,000 12,000

- 2,267(2,637) - 3,023(3,516)

- 9,000 - 12,000

7.5(264) 7.5(264) 8.5(300) 8.5(300) 18~30 16~30 18~30 16~30

24 24 24 24

DL-89812LGIB DL-89812LGIB DL-89812LGIB DL-89812LGIB

DC36 DC36 DC36 DC36

1.5 1.5 1.5 1.5

Turbo Fan Turbo Fan Turbo Fan Turbo Fan

1/24.32(617.7) 1/24.32(617.7) 1/24.32(617.7) 1/24.32(617.7)

37 / 31 / 27 37 / 31 / 27 43 / 39 / 31 43 / 39 / 31 Thermistor Thermistor Thermistor Thermistor

0.197(5.0) 0.197(5.0) 0.197(5.0) 0.197(5.0) 20 20 20 20

2R,20C 2R,20C 2R,20C 2R,20C

- 1.1 - 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) 9(19.84) 9(19.84) 9(19.84)

1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52)

20 20 20 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)

Nominal Cooling Capacity kcal/h(W)

Btu/h

Nominal Heating Capacity kcal/h(W)

Btu/h Air Circulation H/M/L CMM(CFM) Setting temperature range(cool/heat) °C Fan motor Output W

Model No. of Poles Input V Running Current A

Fan Type

No. Used / Diameter EA/inch(mm)

Noise Level (Sound Press,1m)

H/M/L dBA Temperature controller Coil Tube Size (OD) inch(mm)

Fins per inch

No. of Rows & Column Dehumidification Rate l/h Dimensions (W*H*D) inch(mm) Net Weight kg(lbs) Piping Connection Liquid inch(mm)

Gas inch(mm)

Drain hose (ID Ø)mm Packing Dimension (W*H*D) inch(mm) Stuffing Quantity With(Without) S/Parts 20/40ft(hi-c)

Artcool

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

Indoor Unit Type

Model

★

14 Multi type Air Conditioner

Outdoor Unit - Multiple piping models

Product Specifications

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.

★

: See the page "Combination Table"

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

Model

Cooling Capacity★ Btu/hr

kcal/hr

Heating Capacity★ Btu/hr

kcal/hr

Input★ Cooling W

Heating W

Running Current★(208/230V)

Cooling A

Heating A

Power Supply Ø,V,Hz Max. Number of Connectable Indoor Units Compressor Type (Constant) Model

Motor Type

Quantity Ea

Motor Input W

Oil Charge cc

Oil Type

Capacitor µF/Vac

O.L.P Type(model name)

Compressor Type (Constant) Model

Motor Type

Quantity Ea

Motor Input W

Oil Charge cc

Oil Type

Capacitor µF/Vac

O.L.P Type(model name)

Refrigerant charge Charge g(oz)

Type

Control

Coil Tube Size (OD) inch(mm)

Fins per inch

No. of Rows & Column/No.

Fan motor Model

Output W

Capacitor µF/Vac

Fan Type

No. Used / Diameter EA/inch(mm)

Discharge Side / Top

Air Circulation Outdoor CMM(CFM) Noise Level(H/L) at 230V

Sound Press,1m dB(A) 1

SVC Valve Liquid inch(mm)

Gas

Dimensions W*H*D inch(mm) Net Weight Outdoor kg(lbs) Max. Interunit Piping Length

Total of Each Room m

For One Room m

Max. Installation Indoor Unit~Outdoor Unit m Height Difference Indoor Unit~Indoor Unit m Packing Dimension W*H*D inch(mm) Stuffing Quantity 20/40ft

9,000~36,000 9,000~36,000

2637~10,550 2637~10,550

2267~9071 2267~9071

- 9,000~36,000

- 2637~10,550

- 2267~9071

1320~3680 1320~3680

- 1410~3340

5.9~16.6 5.9~16.6

- 6.3~15.0

1,208/230,60 1,208/230,60

Rotary Rotary

GK141K GK141K

2 Pole Induction(PSC) 2 Pole Induction(PSC)

1430 1430 350Å}10 350Å}10 FVC68D FVC68D

35 / 370 35 / 370

External Type External Type

Rotary Rotary

GJ230K GJ230K

2 Pole Induction(PSC) 2 Pole Induction(PSC)

2370 2370

700±10 7000±10

FVC68D FVC68D

50 / 400 50 / 400

Internal Type Internal Type

2400 2400

R410A R410A

L.E.V L.E.V

0.276(7.0) 0.276(7.0) 18 18

2R,48C 2R,48C

ARC286B01 * 2 ARC286B01 * 2

102 102

2/370 2/370

Propeller Propeller

2 / 15.7(400) 2 / 15.7(400)

Side Side

63(2225) 63(2225)

51 51

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

3/8 (9.52) * 3EA 3/8 (9.52) * 3EA

34.3*41.7*12.6 (870*1060*320) 34.3*41.7*12.6 (870*1060*320) 80(176) 80(176)

45 45 15 15

7.5 7.5

41.1*44.9*17.3 (1045*1140*440) 41.1*44.9*17.3 (1045*1140*440) 51/111 51/111

A3UC363FA0(LMU360CE) A3UH363FA0(LMU360HE)

Service Manual 15

Installation

Type "A" screw and plastic anchor

Type "B" screw

Remote Control Holder

Installation plate

Figure FigureName

Screw driver

Electric Drill

Measuring Tape, Knife

Hole Core Drill

Spanner

Torque wrench

Ohmmeter

Hexagonal wrench

Ammeter

Gas Leak Detector

Thermometer,

Level

Flaring Tool Set

Name

Installation Parts

Installation Tools

Read carefully, and then follow step by step.

Installation

16 Multi type Air Conditioner

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.

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.

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.

Select the best location

More than 5cm

(2.0 inch)

More than 5cm

(2.0 inch)

More than 2.3m

(90.6 inch)

More than 5cm

(2.0 inch)

CAUTION: Install the indoor unit

on the wall where the height from the floors more than 2.3m(7.5ft).

More than 10cm

More than 50cm

More than 2m

more than 30cm

(11.8 inch)

more than 30cm

(11.8 inch)

more than 70cm

(27.6 inch)

Service Manual 17

Installation

Piping length and elevation

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).

Multi Piping Type

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

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 out-

door unit (h1)

Max elevation

between indoor

units (h2)

9K 3/8" 1/4" 7.5m(25ft) 20g/m(0.32oz/ft)

12K 3/8" 1/4" 7.5m(25ft) 20g/m(0.32oz/ft)

Gas Liquid Standard Length Additional Refrigerant

Indoor Capacity

(Btu/h)

Pipe Size

18 Multi type Air Conditioner

Installation

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.

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.

Fixing Installation Plate(Standard Type)

Installation Plate

Type "A" screw

Chassis

Hook

ABCD S4 50 105 59 105 SE 65 110 85 110

CHASSIS

(Grade)

Distance (mm)

Ø70mm

Left rear piping Right rear piping

Installation plate

Ø70mm

Service Manual 19

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.

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.

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

NOTICE

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.

Panel Front

Connector

Pipe hole

Adhesive

Only one

desiring direction

Connecting

Drain

hose

part

rubber cap

20 Multi type Air Conditioner

Installation

■ Sticking the installation guide map and

fixing Indoor unit

■ 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.

Plastic anchors

INSTALLATION GUIDE MAP

10m

INSTALLATION GU

INSTAIIATION G

UIDE MAP

INSTALLATION GUIDE MAP

1. Put an Installation Guide Map on the desired surface.

2. Make a hole with diameter of 6mm and depth of 30-35mm when piercing a screw point.

3. Drive the fore plastic anchors into drilled points.

4. Hang the hole of product at the upper screws. (In this time, Remove the map)

(Falling attention)

5. Check the fixed product with light power.

6. Look at suited horizon by horizontal meter on the horizontal setting line, and Fix lightly the map by adhesive tape.

7. Drill the piercing part for connecting pipe as diameter 50mm. (In case of piercing rear surface)

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)

9. Drive the lower parts after facing the hole of product with plastic anchors, and fix completely the upper screws.

In case of nothing wrong in the matter, connect the pipe and the wire. (Installation manual reference)

Horizontality

Plastic anchors

Hanger hole

(Rear side of

product)

5-7mm

(0.2~0.3")

Indoor

WALL

Outdoor

Service Manual 21

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.

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

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.

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)

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.

Copper

pipe

90°

Slanted Uneven Rough

mm inch mm

Ø6.35 1/4 0~0.5 Ø9.52 3/8 0~0.5

Outside diameter A

Bar

Copper pipe

Clamp handle

Red arrow mark

Cone

Yoke

Handle

Bar

"A"

Flaring Work and Connection of Piping

Pipe

Reamer

Point down

Flare nut

Copper tube

22 Multi type Air Conditioner

Flaring Work and Connection of Piping

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.

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.

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

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.

Inclined

Inside is shiny without scratches

Smooth all round

Even length

all round

Surface

damaged

Cracked Uneven

thickness

= Improper flaring =

Connecting the Piping

For right rear piping

Drain hose

Tape

Connecting pipe

Drain hose

Connecting cable

Drain hose

Connecting cable

Drain hose

Loop

Gas side piping

Liquid side piping

Service Manual 23

Flaring Work and Connection of 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.

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

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.

Drain hose

Connecting

cable

mm inch kg.m

Ø6.35 1/4 1.8 Ø9.52 3/8 4.2

Outside diameter Torque

Indoor unit tubing Flare nut Pipes

Open-end wrench (fixed)

Flare nut

Wrench

Indoor unit tubing

Connection pipe

Drain pipe

Connection pipe

Vinyl tape (wide)

Connecting cable

Pipe

Indoor unit drain hose

Adhesive

Vinyl tape(narrow)

Plastic bands

Insulation material

Wrap with vinyl tape

Vinyl tape(narrow)

Wrap with vinyl tape

Indoor unit pipe

Pipe

Drain hose

Vinyl tape(wide)

24 Multi type Air Conditioner

Flaring Work and Connection of 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.

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.

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.

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

For left rear piping

mm inch kg.m

Ø6.35 1/4 1.8 Ø9.52 3/8 4.2

Outside diameter Torque

1 2

Connecting

cable

Drain pipe

Indoor unit

Spacer

Installation plate

8cm

Indoor unit tubing Flare nut Pipes

Open-end wrench (fixed)

Flare nut

Wrench Indoor unit tubing

Drain hose

Indoor unit drain hose

Adhesive

Vinyl tape

Connection pipe

(narrow)

Service Manual 25

Flaring Work and Connection of Piping

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.

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).

Plastic bands

Insulation material

Connection pipe

Vinyl tape (wide)

Connecting cable

Drain hose

Wrap with vinyl tape

Pipe

Vinyl tape(narrow)

Pipe

Vinyl tape(narrow)

Wrap with vinyl tape(wide)

Indoor unit piping

Piping for passage through piping hole

Connecting

cable

Drain hose

26 Multi type Air Conditioner

Flaring Work and Connection of Piping

■ 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

3. Drive two screws.

Panel F ront

Connector

Service Manual 27

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.

Flaring Work and Connection of Piping

28 Multi type Air Conditioner

Flaring Work and Connection of Piping

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.

REMOTE CONTROL PREPARATION(OPTIONAL)

HOW TO MOUNT ONTO A WALL

HOW TO INSERT BATTERIES

• 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.

HOW TO INSERT BATTERIES

Service Manual 29

Flaring Work and Connection of Piping

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.

Outdoor unit

Outside diameter Torque

mm inch kg.m

Ø6.35 1/4 1.8 Ø9.52 3/8 4.2

A-UNIT

Gas side piping

B-UNIT

Liquid side piping

C-UNIT

Torque wrench

30 Multi type Air Conditioner

Connecting the Cable between Indoor Unit and Outdoor 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.

Connect the cable to the Indoor unit.

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.

RECOMMAND:

The power cord connected to the outdoor unit should be complied with the following

specifications (ETL recognized and CSA certified).

The power connecting cable connected to the indoor and outdoor unit should be complied with the following specifications

(ETL recognized and CSA certified).

Air

Conditioner

Main power source

Circuit Breaker Use a circuit breaker or time delay fuse.

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.

Connecting the Cable between Indoor Unit and Outdoor Unit

AWG14

Line voltage (208~230V)

GN/YL

20mm

AWG18

Low voltage (below 40V)

GN/YL

20mm

Service Manual 31

Connect the cable to the Outdoor unit.

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

screw. 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.

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.

NOTICE

Outdoor unit

Over 5mm

Holder for

power supply

cord

Connecting

cable

Cover control

Terminal block

Power supply

cable

Connecting cable(Low voltage)

Connecting the Cable between Indoor Unit and Outdoor Unit

36k Outdoor side

A-UNIT

4321

B-UNIT

4321

Connecting cable(Low voltage)

C-UNIT

4321

Terminal BLOCK

Indoor A-UNIT

4321

Power Source

208/230V AC

(High voltage)

Terminal BLOCK

Indoor B-UNIT

4321

Terminal BLOCK

Indoor C-UNIT

4321

32 Multi type Air Conditioner

(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.

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.

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.

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.

Connection method of the connecting cable(Example)

Terminal block

Lock nut

Power supply line

(1ø, 230/208V)

Conduit panel

Cap(Reuse)

Cord clamp

Hole (for low voltage line)

Cap(Remove) Taping

(for sealing)

Low voltage line (connecting cable)

High voltage

Low voltage

Strip 10mm(3/8")

Round terminal

Connecting cable

Loosening the terminal block screw

Fastening the wire tightly

Strand wire

Connecting the Cable between Indoor Unit and Outdoor Unit

Service Manual 33

Connect the cable to the indoor unit

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

below.

Air

Conditioner

Circuit Breaker

Use a circuit breaker or time delay fuse.

Main power source

Model

36k 1Ø, 230/208V 40A

Power source

Fuse or breaker

Capacity

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.

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.

Connecting cable

Connecting the Cable between Indoor Unit and Outdoor Unit

34 Multi type Air Conditioner

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.

Checking the Drainage, Forming the Pipings and Long Pipe Setting

Accumulated drain water

Air

Waving

Water leakage

Do not raise

Water leakage

Tip of drain hose dipped in water

Ditch

Downward slope

Less than 50mm gap

Service Manual 35

Checking the Drainage, Forming the Pipings and Long Pipe Setting

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.

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 is required to prevent water from entering into electrical parts.

Plastic band

Taping

Drain hose

Pipings Connecting

cable

Power supply cord

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

36 Multi type Air Conditioner

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.

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.

Leakage test shoud be done for each indoor

unit connection set, separately.

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.

NOTICE

Checking method

Charge hose

Nitrogen gas cylinder(in vertical standing position)

Indoor unit

Outdoor unit

Lo Hi

Manifold valve

Pressure gauge

Air Purging and Evacuation

Service Manual 37

Checking the Drainage, Forming the Pipings and Long Pipe Setting

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.

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.

: Repeat evacuation procedure for each indoor

unit.

NOTICE

Required time for evacuation when 30 gal/h vacuum

pump is used

10 min. or more 15 min. or more

If tubing length is less

than 10m (33 ft)

If tubing length is longer

than 10m (33 ft)

Indoor unit

Outdoor unit

Lo Hi

Manifold valve

Vacuum pump

Pressure gauge

Open

Evacuation

38 Multi type Air Conditioner

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).

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.

Charging

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

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

Service Manual 39

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.

NOTE:

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

batteries.

• Remove the batteries from the remote controller if the sys-

tem 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.

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).

Bolt

Tubing connection

Discharge temperature

Discharge air

Intake temperature

Test Running

Split, Art Cool Type

Discharge temperature

Discharge air

Intake temperature

R-410A 35°C (95°F) 8.5~9.5kg/cm2G(120~135 P.S.I.G.)

Outside ambient

TEMP.

Refrigerant

The pressure of the gas side

service valve.

Test Running

40 Multi type Air Conditioner

Operation

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 ➲ 25°C(77

°F)

24°C(75.2

°F)

≤ Intake Intake Air Temp<26°C(78.8

°F)

➲ Intake Air Temp-1°C(30.2

°F)

18°C(64.4

°F)

≤ Intake Intake Air Temp<24°C(75.2

°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. ➲ Setting Temp+0.5°C(32.9

°F)

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

Function of control

Operation

Service Manual 41

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 ➲ Fuzzy Operation for Cooling

21°C(69.8

°F)

≤ Inatake Air Temp<24°C(75.2

°F)

➲ Fuzzy Operation for Dehumidification

Inatake Air Temp<21°C(69.8

°F)

➲ 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 ➲ Setting Temp +0.5°C(32.9

°F)

Compressor OFF Temp ➲ 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 ➲ 25°C(77

°F)

24°C(75.2

°F)

≤ Intake Air Temp<26°C(78.8

°F)

➲ Intake Air Temp + 1°C(33.8

°F)

22°C(71.6

°F)

≤ Intake Air Temp<24°C(75.2

°F)

➲ Intake Air Temp + 0.5°C(32.9

°F)

18°C(64.4

°F)

≤ Intake Air Temp<22°C(71.6

°F)

➲ Intake Air Temp

Intake Air Temp<18°C(64.4

°F)

➲ 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.

42 Multi type Air Conditioner

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 ➲ Setting Temp + 0.5°C(32.9

°F)

Compressor OFF Temp ➲ 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 ➲ 25°C(77

°F)

24°C(75.2

°F)

≤ Intake Air Temp<26°C(78.8

°F)

➲ Intake Air Temp+1°C(33.8

°F)

22°C(71.6

°F)

≤ Intake Air Temp<24°C(75.2

°F)

➲ Intake Air Temp+0.5°C(32.9

°F)

18°C(64.4

°F)

≤ Intake Air Temp<22°C(71.6

°F)

➲ Intake Air Temp

Intake Air Temp<18°C(64.4

°F)

➲ 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 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 ➲ Setting Temp Compressor OFF Temp ➲ Setting Temp + 3°C(37.4

°F)

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the

intake air temp at that time.

20°C(68

°F)

≤Intake Air Temp ➲ Intake Air Temp + 0.5°C(32.9

°F)

Intake Air Temp<20°C(68

°F)

➲ 20°C(68

°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 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.

Service Manual 43

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.

44 Multi type Air Conditioner

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 ➲ Cooling Mode Operation, 22°C(71.6

°F)

, High Speed

21°C(69.8

°F)

≤Intake Air Temp<24°C(75.2

°F)

➲ Dehumidification Operation, 23°C(73.4

°F)

, High Speed

Intake Air Temp<21°C(69.8

°F)

➲ 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.

Service Manual 45

"Wall Mounted Type is standard" * Functions is dependent on model type.

Operation

Function of Indoor Unit

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

Outdoor unit operation

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

Desire temperature For cooling,dehumidification,heating modes it display Destired temperature indicator • Cooling : 18°C~30°C(64°F~86°F) • AI : Auto Operation

• Dehumidification : 18°C~30°C(64°F~86°F) • Po : Jet Cool

• Heating : 16~30°C(60°F~86°F) • Lo : Test Mode

Plasma

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

• Room temperature sensor. (THERMISTOR)

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

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

• Restarting is delayed for approx. 3 minutes.

• High, Med, Low, Chaos, Jet Cool

• Intermittent operation of fan at low speed.

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

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

• The fan is switched to intermittent or irregular operation

•

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

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

Split Type

Indoor Unit

Operation ON/OFF by Remote controlle

Sensing the Room Temperature

Room temperature control

Starting Current Control

Time Delay Safety Control

Indoor Fan Speed Control

Operation indication Lamps (LED)

Soft Dry Operation Mode

• Both the indoor and outdoor fan stops during deicing.

• Hot start after deice ends.

• The indoor fan stops until the

evaporator piping temperature will be reached at 27°C(80.6°F).

Sleep Mode Auto Control

Natural Air Control by CHAOS Logic

* Airflow Direction Control

Deice (defrost) control (Heating)

Hot-start Control (Heating)

46 Multi type Air Conditioner

Operation

• Room temperature sensor. (THERMISTOR)

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

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

• Restarting is inhibited for approx. 3 minutes.

• High, Med, Low, CHAOS, JET COOL

• Intermittent operation of fan at low speed.

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

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

• The fan is switched to intermittent or irregular operatio

•

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

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

Art Cool Type Indoor Unit

Operation ON/OFF by Remote controller Sensing the Room Temperature

Room temperature control

Starting Current Control

Time Delay Safety Control

Indoor Fan Speed Control

Operation indication Lamps (LED)

Soft Dry Operation Mode

• 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.

• Both the indoor and outdoor fan stops during defrosting.

• The indoor fan stops until the evaporator pipe temperature will be reached at 28°C(82.4°F).

Sleep Mode Auto Control

Natural Air Control by CHAOS Logic

Airflow Direction Control

Defrost(Deice) control (Heating)

Hot-start Control (Heating)

PLASMA

: 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)

PLASMA : Indicate PLASMA purifier operation.

On/Off

Desire temperature For cooling,dehumidification,heating modes it display Destired temperature indicator • Cooling : 18°C~30°C(64°F~86°F) • AI : Auto Operation

• Dehumidification : 18°C~30°C(64°F~86°F) • Po : Jet Cool

• Heating : 16~30°C(60°F~86°F) • Lo : Test Mode

Outdoor unit operation

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

Service Manual 47

Operation

Function of Outdoor Unit

Outdoor Unit

Two Comp algorithm

Operating Step

LEV Control

Out door Fan Control

• 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 pulse is modulated to keep constant superheat or subcooling.

• 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/cm2), it will turn off comp A

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

48 Multi type Air Conditioner

Operation

Remote Control Operation

OFF

CANCEL

AUTO CLEAN

°C/°F

SET

Cooling Operation

Auto Operation

Healthy Dehumidification Operation

Flip-up door (opened)

Heating Operation

Signal transmitter

•

Cooling Model( ), Heat Pump Model( )

18 15

4 2

Operation Mode

The Remote Controller transmits the signals to the system.

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.

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.

HORIZONTAL AIRFLOW DIRECTION CONTROL BUTTON (NOT ON ALL MODELS)

Used to set the desired horizontal airflow direction.

(Heat Pump)

(Cooling Only)

Service Manual 49

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

50 Multi type Air Conditioner

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.

4. To remove the Evaporator.

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

Screw

• When repair, do not damage the Caution label.

Service Manual 51

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

52 Multi type Air Conditioner

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.

Step Motor Connectors

Sensor Connector

Comp Connector

4Way/Fan Connector

Motor Connector

Power Connector

Comp Connector

Panel Front

Connector

Service Manual 53

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.

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.

Top Cover

Pipe Cover

Air Guide

Turbo Fan

Bracket

Bolt Motor Mount

54 Multi type Air Conditioner

Schematic Diagram

Electronic Control Device

1. Indoor Unit

1) Split Type

Service Manual 55

Schematic Diagram

2) Art Cool Type

OUTDOOR

Digit2

LED2

LED4

LED3

LED1

DEFROST

ON/OFF

TIMER

SLEEP

6(d)

Digit1

8(c)

7(e)

gfa

9(b)

1(g)

3(a)

4(f)

31.

52 51

HVB ASSY

231

CN-HVB(BL)

Vdd0

VssO

R28H 20K

R27H 20K

DISPLAY

STEPPING MOTOR

KEY

TEST

Vcc

RECEIVER

Vout

GND

DC 5V

25V

0.01

C04L

CN-MAIN

765 765

1010

CN-D5

1 1

CN-D6

CN-D3

5 5

BLPK

3 3

BLPK

receiver

4965321

CN-D2

CN-D2(WH)

564

C02L

10V

220

R12H

10K

50V

C13H

103

R11H

123

876

DCS

Q02C

Q03C

R05G 220

R06G 220

R07G 220

Q01C

LED scan

digit 1

digit 2

ecd

CN-D1

CN-D1(WH)

R02G 220

R03G 220

R04G 220

R01G 220

IC01M

KID65004AF

agb

KID65004AF

IC02M

12V

680pF

50V

R01L

C01L

5.1K

OJ02H

OR2H

OR3HOR6H OR5H OR4H

MedS-Hi Hi Low

AVss

AVdd1

AVret

AVdd

RESET

X1X2INTO

Vss1

INT1

R23H

OR1H

R25H

R24H

R26H

R21H~R26H

12.1K 1%

R22H

R21H

CST-8.00MTW

OSC01B

uPD780023AGC

0IMCRNE002M

CN-UD(BL)

R01E

12V

R02E 20

PKM13EPP-4002

BZ01E

PIPE-TH

ROOM-TH

STEP MOTOR

6.2K

12.1K

R05H

10K

R02H

R04H

receiver

CN-TH1(WH)

CN-LR2(WH)

L / R 2

STEP MOTOR

12V

PK1BL

CN-LR1(WH)

344

L / R 1

STEPPING MOTOR

PKBL YL OR

SUB PCB ASM

HVB

11 1111

10987654

321

8910

123

456

654

1098

HVB PIN1

13 13

421

124

4 3

E3 1K

E2 1K

C02M

103

C01M

103

C03M

103

CN-D1(WH)

CN-CON(WH)

CN-12V(WH)

2112 2

3 3

2222

3 3

OJ01H

0.01

25V

C01A

R02A 20K

KSC7536

KIA7036P

3.6V

IC01A

R02L

R01B

HVB PIN2

HVB PIN1

HVB

HVB PIN2

12V

DC5V

103

C06D

C01D

35V

2200uF

DC12V

IC02D

7805

C05D

25V

470uF

C04D

104

50V

C03D

25V

470uF

7812

IC01D

104

C02D

50V

R97

10K

R96

10K

DC 5V

IC9-1

KA393

DC12V

R95

10K

63V

100uF

C07D

CN-MOTOR1(WH)

MOTOR1

INDOOR

FAN

104,50V

CN-DC/DC(BL)

POLY SW1

RXE250

1/4W

C92

DC 5V

R90 1K

C91

103

IC9-2

KA393

R92 10K

4.7K

R91

R93 10K

DC12V

R99

750

C03L

10V

220

RXD

TXD

RXD

C81

103

R81 1K

FG1

EEPROM

KID65004AF

IC03M

12V

4 23

FAN

INDOOR

MOTOR2

23 1

RXE250~POLY SW2

FG2

DC12V

CN-MOTOR2(WH)

R81A 1K

FG2

C81A

103

56 Multi type Air Conditioner

Schematic Diagram

2. Outdoor Unit

Service Manual 57

Schematic Diagram

58 Multi type Air Conditioner

1. Room Type Indoor Unit -S4/SE chassis

2. Art Cool Type Indoor Unit

Wiring Diagram

Schematic Diagram

3. Outdoor Unit

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

Service Manual 59

Schematic Diagram

1. Indoor Unit

MAIN P.C.B ASM

1) Split Type

Components Locations

• TOP VIEW

• BOTTOM VIEW

PCB :6870A90409B ASSY:6871A20771

6871A20782

60 Multi type Air Conditioner

Schematic Diagram

2) Art Cool Type

• TOP VIEW

• BOTTOM VIEW

Service Manual 61

Schematic Diagram

2. Display ASSEMBLY

1) Split Type (6871A20680)

2) Art Cool Type (6871A20462)

BOTTOM VIEW

TOP VIEW

62 Multi type Air Conditioner

Schematic Diagram

3. Outdoor Unit

1) Component side

Service Manual 63

Schematic Diagram

2) Solder side

64 Multi type Air Conditioner

Field Piping Gas

Field Piping Liquid

Refrigerant Flow

Th1: Discharge thermistor Th2: Discharge thermistor Th3: Outdoor temperature thermistor

Room A

Cooling

LEV-B

LEV-A

Heat Exchanger

Header

OUTDOOR UNIT

Room B

Ø9.52

Room A

Room B

Ø6.35

Ø9.52

Room C

Ø9.52

Th2

High pressure S/W

Th3

Th1

LEV-C

Room C

Constant

Compressor

Constant

Compressor

Accumulator

1. A3UH363FA0(LMU360HE)

2. A3UC363FA0(LMU360CE)

Troubleshooting Guide

Refrigeration Cycle Diagram

Ø9.52

Room C

Room B

Room A

Room C

Room B

Room A

Ø9.52

Ø6.35

Field Piping Gas

Field Piping Liquid

Refrigerant Flow

Cooling Heating

Th1: Discharge thermistor Th2: Discharge thermistor Th3: Outdoor temperature thermistor Th4: Defrost thermistor

Header

LEV-C

LEV-B

LEV-A

Accumulator

Constant

Th1

Compressor

High pressure S/W

Th2

Constant

Compressor

OUTDOOR UNIT

Th3

Heat Exchanger

Th4

Service Manual 65

Troubleshooting Guide

■ 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.

Self-diagnosis Function

00 No Error ON 01 Indoor Room Thermistor Error 1 time OFF 02 Indoor In-Piping Error 2 times OFF 05 Communication Error between In and Out 5 times OFF 06 Indoor Out-Piping Error 6 times OFF 07 Differnt mode operation 7 times OFF 10 Indoor fan motor locked error 1 times OFF

Error code Description MPS Variable LED1 LED2 Indoor Status

33 D-Pipe High(Normal) 3 times 3 times OFF 44 Outdoor Air Thermistor Error(Open/Short) 4 times 4 times OFF 45 Cond Pipe Thermistor Error(Open/Short) 4 times 5 times OFF 47

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

4 times 7 times OFF

51 Capcity Error(High/Low)

5 times 1 times OFF

Error code Description MPS Variable LED1(Red) LED2(Green) Indoor Status

Indoor Error

Outdoor Error

LED1

LED2

66 Multi type Air Conditioner

Troubleshooting Guide

Trouble analysis

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

All amount of refrigerant leaked out. Check refrigeration cycle.

Refrigerant leakage Clog of refrigeration cycle Defective compressor

Excessive amount of refrigerant

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.

Notice:

1. The suction pressure is usually 4.5~6.0 kg/cm2G at normal condition.

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

Temp. difference : approx. 0°C(32°F) Current : less than 80% of

rated current

Temp. difference : approx. 8°C

(46.4°F)

Current : less than 80% of

rated current

Temp. difference : less than 8°C

(46.4°F)

Current : near the rated cur-

rent

Temp. difference : over 8°C

(46.4°F)

Temp. Difference

Operating Current

Suction pressure Temperature

(Compared with (Compared with Cause of Trouble Description

the normal value) the normal value)

High Defective compressor Current is low.

Normal Excessive amount of High pressure does not quickly

refrigerant rise at the beginning of operation. Insufficient amount of Current is low.

Lower Higher refrigerant(Leakage)

Clogging

Higher

Cycle Troubleshooting Guide

Service Manual 67

Troubleshooting Guide

Electronic Parts Troubleshooting Guide

❇ Refer to electronic contorol device drawing & schematic diagram.

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?

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

• Check CN-DISP1

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.)

Trouble 1

YES

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.

68 Multi type Air Conditioner

Troubleshooting Guide

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

Product doesn't operate with the remote controller.

Trouble 2

Service Manual 69

Troubleshooting Guide

Turn on the main power.

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

Turn off main power.

Check the electrical wiring diagram of Outdoor side. Check the open or short of connecting wires between Indoor and Outdoor.

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.

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.

The Compressor/Outdoor Fan are don't operate

Trouble 3

Check Point

Between Micom(No. 50,51) and GND

DC 5V DC 0V

DC 12VDC 1V↓

Between IC01M(No. 10) and GND

Comp. ON Comp. OFF

70 Multi type Air Conditioner

Troubleshooting Guide

When indoor Fan does not operate.

Check connecting condition of the CN-MOTOR CONNECTOR

Does the voltage of terminal of CN-DC/DC CONNECTOR in Indoor unit corresponds to the values in the table of page 56

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 patterns and the conditions of outdoor unit PWB Assy's.

Check the connecting condition and disconnection of connecting wires between Indoor and Outdoor unit.

Check the pattern and the condition of Indoor unit PWB Ass'y.

Check the interference of Indoor Fan.

Does the voltage of each terminals of CN-MOTOR CONNECTOR in Indoor unit corresponds to values in the Table of page 69

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)

YES

When indoor Fan does not operate.

Trouble 4

Service Manual 71

Troubleshooting Guide

When the louver does not operate.

Trouble 5

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

72 Multi type Air Conditioner

Troubleshooting Guide

Error Code

■ Trouble Shooting

Error

Title Cause of error Check point & Normal condition

code

01 Indoor air sensor

02 Indoor inlet pipe sensor

06 Indoor outlet pipe sensor

• Open / Short

• Soldered poorly

• Internal circuit error

• Open / Short

• Soldered poorly

• Internal circuit error

• Open / Short

• Soldered poorly

• Internal circuit error

Normal resistor : 10KΩ / at 25°C (Unplugged) Normal voltage : 2.5Vdc / at 25°C (plugged)

Normal resistor : 5KΩ/ at 25°C (Unplugged) Normal voltage : 2.5Vdc / at 25°C (plugged)

❑ 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 10KΩ/5KΩ at 25°C, then sensor is normal

4. If the resistance of the sensor is 0 KΩ 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

10KΩ

Ω

2.5Vdc

Check the resistance / voltage

Service Manual 73

Troubleshooting Guide

Error

Title Cause of error Check point & Normal condition

code

05 / 53

Communication (Indoor ➔ Outdoor)

• 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 2MΩ)

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.

74 Multi type Air Conditioner

Troubleshooting Guide

Error

Title Cause of error Check point & Normal condition

code

33 D-Pipe Temp. High

• 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.

Error

Title Cause of error Check point & Normal condition

code

51 Capacitor error

• 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.

❑ 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.

115°C(239°F) 100°C(212°F)

95°C(203°F)

A3UH363FA0(LMU360HE)/A3UC363FA0(LMU360CE)

COMP OFF

LEV OPEN(16PULSE/MIN) LEV OPEN(10PULSE/MIN)

NORMAL

Service Manual 75

Troubleshooting Guide

Error

Title Cause of error Check point & Normal condition

code

44 Outdoor air sensor

45 Condensor pipe sensor

47 D-Pipe sensor

• Open / Short

• Soldered poorly

• Internal circuit error

• Open / Short

• Soldered poorly

• Internal circuit error

• Open / Short

• Soldered poorly

• Internal circuit error

Normal resistor : 10KΩ / at 25°C(77°F) (Unplugged) Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged)

Normal resistor : 5KΩ/ at 25°C

(77°F)

(Unplugged)

Normal voltage : 2.5Vdc / at 25°C

(77°F)

(plugged)

Normal resistor : 200KΩ/ at 25°C

(77°F)

(Unplugged)

Normal voltage : 4.5Vdc / at 25°C

(77°F)

(plugged)

❑ 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

Ω

Check the resistance

76 Multi type Air Conditioner

2-way, 3-way Valve

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

Works Shaft position Shaft position Service port

Shipping Closed Closed Closed

(with valve cap) (with valve cap) (with cap)

Air purging Open Closed Open

(Installation) (counter-clockwise) (clockwise) (push-pin or with

vacuum pump)

Operation Open Open Closed

(with valve cap) (with valve cap) (with cap)

Pumping down Closed Open Open

(Transfering) (clockwise) (counter-clockwise) (connected

manifold gauge)

Evacuation Open Open Open

(Servicing) (with charging

cylinder)

Gas charging Open Open Open

(Servicing) (with charging

cylinder)

Pressure check Open Open Open

(Servicing) (with charging

cylinder)

Gas releasing Open Open Open

(Servicing) (with charging

cylinder)

Flare nut

To piping connection

Open position Closed position

Flare nut

Valve cap

To piping connection

Open position Closed position

Hexagonal wrench (4mm)

To outdoor unit

Service port

Service port cap

To outdoor unit

Service Manual 77

2-way, 3-way Valve

(1) Pumping down

• 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.

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.

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

6. Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 1kg/cm2g.

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

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

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.

Indoor unit

Outdoor unit

Liquid side

Gas side

2-Way

valve

Open

3-Way

valve

manifold gauge

Indoor unit

Liquid side

Gas side

2-Way

valve

Open

3-Way

valve

Hi- handle (CLOSE)

Lowhandle (CLOSE)

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

78 Multi type Air Conditioner

2-way, 3-way Valve

(2) Evacuation

(All amount of refrigerant leaked)

• 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.

Indoor unit

Outdoor unit

Liquid side

Open

Gas side

2-Way

valve

Open

3-Way

valve

manifold gauge

Indoor unit

Liquid side

Open

Gas side

2-Way

valve

Open

3-Way

valve

Vacuum pump

Hi- handle (OPEN)

Lowhandle (OPEN)

Service Manual 79

2-way, 3-way Valve

(3) Gas Charging

(After Evacuation)

• 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.

- Stopping partway will allow the gas to be dis-

charged.

- 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.

manifold gauge

Charging

cylinder

Hi- handle (OPEN)

Low-handle

(OPEN)

Check valve

Indoor unit

Outdoor unit

Liquid side

Open

Gas side

2-Way

valve

Open

3-Way

valve

Indoor unit

Liquid side

Open

Gas side

2-Way

valve

Open

3-Way

valve

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.

80 Multi type Air Conditioner

135301

152302-2

152313

152302-1

342800

263230-2 263230-1

359011

131410 733010

135311

135312

159901

268712

146811

147582

346810

135516

35211B

354210

249951

352150

268714

668713

267110

135500

Exploded View & Replacement Parts List

Indoor Unit

S4, SE chassis

Service Manual 81

Exploded View & Replacement Parts List

Parts List (S4, SE chassis)

PART No.

S4 chassis SE chassis

AMNH093D4A0

(LMN090HE)

AMNC093D4A0

(LMN090CE)

AMNH123DEA0

(LMN120HE)

AMNC123DEA0

(LMN120CE)

131410 CHASSIS ASSEMBLY 3141A20019C 3141A20019C 3141A20034A 3141A20034A R 135311 GRILLE ASSEMBLY,FRONT(INDOOR) 3531A14003K 3531A14003K 3531A18015A 3531A18015A R

135301 GRILLE,FRONT 3530A10253A 3530A10253A 3530A10287A 3530A10287A R 152302-1 FILTER,AIR 5230A20051B 5230A20051B 5230A20064A 5230A20064A R 152302-2 FILTER,AIR 5230A20051D 5230A20051D 5230A20064A 5230A20064A R

135312

GRILLE ASSEMBLY,DISCHARGE(INDOOR)

3531A11307A 3531A10307V 3531A11362A 3531A11362B R 159901 LOUVER,HORIZONTAL 5990A20069A 5990A20069A 5990A20068A 5990A20068A R 147582 LOUVER,VERTICAL 4758A30052A 4758A30052A 4758A30057A 4758A30057A R 146811 MOTOR,DC 4681A20055A 4681A20055A 4681A20055A 4681A20055A R 268712 PCB ASSEMBLY,DISPLAY 6871A20680D 6871A20680F 6871A20680D 6871A20680F R 135516 COVER ASSEMBLY,MOTOR 3551A20156B 3551A20156B 3551A20156B 3551A20156B R 346810 MOTOR,DC 4681AR2295L 4681AR2295L 4681AR2295L 4681AR2295L R 152313 FILTER ASSEMBLY,DEODORIZER 5231A20040A 5231A20040A 5231A20040K 5231A20040K R 249951 CASE ASSEMBLY,CONTROL(INDOOR) 4995A20831A 4995A20831A 4995A20831A 4995A20831A R 268714 PCB ASSEMBLY,MAIN 6871A20782A 6871A20782A 6871A20782A 6871A20782A R 668713 PCB ASSEMBLY(OPTION PCB) 6871A20989A 6871A20989D 6871A20989B 6871A20989C R

263230-1 THERMISTOR,NTC 6323AQ3226T 6323AQ3226T 6323AQ3226T 6323AQ3226T R 263230-2 THERMISTOR,NTC 6323A20004A 6323A20004A 6323A20004A 6323A20004A R

267110 REMOTE CONTROLLER ASSEMBLY 6711A20128C 6711A20128A 6711A20128C 6711A20128A R 342800 BEARING 4280A20004B 4280A20004B 4280A20004B 4280A20004B R 354210 EVAPORATOR ASSEMBLY,FINAL 5421A20222C 5421A20222C 5421A20282A 5421A20282A R 35211B TUBE ASSEMBLY,TUBING 5211A21363E 5211A21363E 5211A15008A 5211A15008A R 352150 HOSE ASSEMBLY,DRAIN 5251A20011B 5251A20011B 5251A20011G 5251A20011G R 359011 FAN ASSEMBLY,CROSS FLOW 5901A20017F 5901A20017F 5901A20017H 5901A20017H R 733010 PLATE ASSEMBLY,INSTALLATION 3301A20020C 3301A20020C 3301A20020A 3301A20020A R 135500 COVER 3550A30262A 3550A30262A 3550A30315A 3550A30315A R

DESCRIPTION

SVC

CODE

LOCATION

No.

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

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

82 Multi type Air Conditioner

Exploded View & Replacement Parts List

135515

267110

135500-3

268714

352150

35211B

263230-2

147581

359012

349600

352380

146811

147581

346810

147581

268712

135500-1

131410

354210

263230-1

135500-2

146811

268717-1

268717-2

330870

135312

146811

135314

159830

249951

SP3 Chassis Art Cool Type

Service Manual 83

Exploded View & Replacement Parts List

Parts List (SP3 chassis)

PART No.

AMNH093APM0

(LMAN090HNS)

AMNC093APM0 (LMAN090CNS)

AMNH123APM0 (LMAN120HNS)

AMNC123APM0 (LMAN120CNS)

131410 CHASSIS ASSEMBLY 3141A20030C 3141A20030C 3141A20030C 3141A20030C R 135312

GRILLE ASSEMBLY,FRONT(INDOOR)

3531A21035N 3531A21035T 3531A21035N 3531A21035T R 135314 GRILLE ASSEMBLY,INLET 3531A20212K 3531A20212K 3531A20212K 3531A20212K R 152302 FILTER, AIR 5230A20032A 5230A20032A 5230A20032A 5230A20032A R 268712 PCB ASSEMBLY,DISPLAY 6871A20462A 6871A20462B 6871A20462A 6871A20462B R

268717-1 PCB ASSEMBLY,SUB 6871A20259B 6871A20259B 6871A20259B 6871A20259B R 268717-2 PCB ASSEMBLY,SUB 6871A20363D 6871A20363D 6871A20363D 6871A20363D R 135500-1 COVER 3550A20123C 3550A20123C 3550A20123C 3550A20123C R 135500-2 COVER 3550A20124B 3550A20124B 3550A20124B 3550A20124B R 135500-3 COVER 3550A20060A 3550A20060A 3550A20060A 3550A20060A R

135515 COVER ASSEMBLY,TOP(INDOOR) 3551A20031H 3551A20031H 3551A20031H 3551A20031H R 147581 LOUVER,HORIZONTAL 4758A20014B 4758A20014B 4758A20014B 4758A20014B R 146811 MOTOR,DC 4681A20055A 4681A20055A 4681A20055A 4681A20055A R 159830 FILTER ASSEMBLY,AIR CLEANER 5983A20007F 5983A20007F 5983A20007F 5983A20007F R 249951

CASE ASSEMBLY,CONTROL(INDOOR)

4995A20832B 4995A20832A 4995A20832D 4995A20832C R 268714 PCB ASSEMBLY 6871A20387K 6871A20387M 6871A20387M 6871A20387N R

263230-2 THERMISTOR,NTC(ROOM+IN PIPE) 6323A20004N 6323A20004N 6323A20004N 6323A20004N R 263230-1 THERMISTOR,NTC(OUT PIPE) 6323AQ3226T 6323AQ3226T 6323AQ3226T 6323AQ3226T R

267110 REMOTE CONTROLLER ASSEMBLY 6711A20128F 6711A20083R 6711A20128F 6711A20083R R 330870 PAN ASSEMBLY,DRAIN 3087A30004A 3087A30004A 3087A30004A 3087A30004A R 346810 MOTOR,UNCLASSIFIED 4681A20047B 4681A20047B 4681A20047B 4681A20047B R 349600 BRACKET,MOTOR 4960A20016A 4960A20016A 4960A20016A 4960A20016A R

35211B TUBE ASSEMBLY,TUBING 5211AR7066F 5211AR7066F 5211AR7066F 5211AR7066F R

352150 HOSE ASSEMBLY,DRAIN 5251AR1222R 5251AR1222R 5251AR1222R 5251AR1222R R 354210 EVAPORATOR ASSEMBLY,FIRST 5421A20072A 5421A20072A 5421A20072A 5421A20072A R 359012 FAN,TURBO 5900A00003A 5900A00003A 5900A00003A 5900A00003A R

DESCRIPTION

SVC

CODE

LOCATION

No.

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

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

84 Multi type Air Conditioner

Exploded View & Replacement Parts List

546810

559010

552116

552203-1

552203-2

554160-2

554160-1

567502

554031

447910

430410

435512

135301

437211

137213-2137213-1

135314

548490

552112

552113

552117

561411-1

561411-2

561411-3

263230-1

263230-2

649950

668711-2

668711-1

W0CZZ-1

W0CZZ-2

435511

561410

A3UH363FA0(LMU360HE), A3UC363FA0(LMU360CE)

Outdoor Unit

Service Manual 85

Exploded View & Replacement Parts List

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

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

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

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

PART No.

A3UH363FA0(LMU360HE) A3UC363FA0(LMU360CE)

135301 GRILLE,DISCHARGE 3530A20006G 3530A20006G R

135314 GRILLE,REAR 3530A10176B 3530A10176B R 263230-1 THERMISTOR, NTC 6323A20028A 6323A20028A R 263230-2 THERMISTOR, NTC 6323A20026A 6323A20026A R

430410 BASE ASSEMBLY, OUTDOOR 3041AP2741H 3041AP2741H R

435511 COVER ASSEMBLY,CONTROL(OUTDOOR) 3551A10044G 3551A10044H R

435512 COVER ASSEMBLY,TOP(OUTDOOR) 3H03266H 3H03266H R

437211 PANEL ASSEMBLY,FRONT(OUTDOOR) 3721A10109C 3721A10109C R

447910 BARRIER ASSEMBLY,OUTDOOR 4791A10019B 4791A10019B R

546810 MOTOR ASSEMBLY,OUTDOOR 4681AR1392X 4681AR1392X R

548490 ACCUMULATOR ASSEMBLY(MECH) 4848A20006L 4848A20006L R

552112 TUBE ASSEMBLY,CONDENSER IN 5211A11010A 5211A11010A R

552113 TUBE ASSEMBLY, CONDENSER OUT 5211A12001A 5211A12001A R

552116 TUBE ASSEMBLY, REVERSING AJR30111101 AJR30111101 R

552117 TUBE ASSEMBLY, SUCTION(OUTDOOR) AJR30125001 AJR30125001 R

554031 CONDENSER ASSEMBLY, BENDING 5403A20168A 5403A20168C R

559010 FAN ASSEMBLY, PROPELLER 5901A10033A 5901A10033A R

561410 COIL ASSEMBLY, REVERSING VALVE 3A02028Z - R

649950 CASE ASSEMBLY,CONTROL(OUTDOOR) 4995A00002H 4995A00002H R 668711-1 PWB(PCB) ASSEMBLY,MAIN(AC) 6871A20500B 6871A20500B R 668711-2 PWB(PCB) ASSEMBLY,MAIN(OUTDOOR) 6871A20479E 6871A20479E R 137213-1 PANEL ASSEMBLY, SIDE 3721A10110A 3721A10110A R 137213-2 PANEL ASSEMBLY, SIDE 3721A10111C 3721A10111C R 552203-1 VALVE,SERVICE 5220A20001K 5220A20001K R 552203-2 VALVE,SERVICE 2H02479J 2H02479J R 554160-1 COMPRESSOR 2520UHGK2AA 2520UHGK2AA R 554160-2 COMPRESSOR TBZ30111701 TBZ30111701 R 561411-1 DRAWING,ASSEMBLY(EEV COIL) 6877A20050A 6877A20050A R 561411-2 DRAWING,ASSEMBLY(EEV COIL) 6877A20050B 6877A20050B R 561411-3 DRAWING,ASSEMBLY(EEV COIL) 6877A20050C 6877A20050C R W0CZZ-1 CAPACITOR,FILM,BOX 0CZZA20007Q 0CZZA20007Q R W0CZZ-2 CAPACITOR,FILM,BOX 2H01451S 2H01451S R

567502 O.L.P 6750U-L048A 6750U-L048A R

DESCRIPTION

SVC

CODE

LOCATION

No.

P/No.: 3828A20474C

May, 2006

Printed in Korea

LG AMNC093APM0, A3UH363FA0, AMNC123APM0, AMNH093APM0, AMNH123DEA0 User Manual 2

Specifications and Main Features

Frequently Asked Questions

User Manual