LG ARNU09GTJA1, ARUN Series, ARNU12GTJA1, ARNU18GTLA1, ARNU24GTLA1 Service Manual

System

Air Conditioner

SVC MANUAL

MODEL : ARUV/ARUN Series ARNU Series

CAUTION

Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized service personnel.

Internal Use Only

http://biz.lgservice.com

- 2 -

LGE Internal Use Only

Air Conditioner Service Manual

TABLE OF CONTENTS

Safety Precautions............................................................................................................................3

Model Names ..................................................................................................................................11

External Appearance ......................................................................................................................12

Combination of Outdoor Units ......................................................................................................14

Nomenclature..................................................................................................................................15

Outdoor Units Information.............................................................................................................16

Indoor Units .................................................................................................................................19

Ceiling Mounted Cassette Type (1 way).......................................................................................21

Ceiling Mounted Cassette Type (2 way).......................................................................................29

Ceiling Mounted Cassette Type (4 way).......................................................................................39

Art Cool Type ...............................................................................................................................51

Art Cool Type(Wide).....................................................................................................................65

Art Cool Type(Mirror)....................................................................................................................79

Ceiling Concealed Duct Type (Low static)....................................................................................95

Ceiling Concealed Duct Type (Built in).......................................................................................105

Ceiling Concealed Duct Type (High static).................................................................................115

Wall Mounted Type.....................................................................................................................127

Convertible Type ........................................................................................................................141

Floor Standing Type...................................................................................................................153

Outdoor Units .........................................................................................................163

Trouble shooting guide..........................................................................................229

Exploded View & Replacement Parts List............................................................297

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LGE Internal Use Only

Safety Precautions

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

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

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

WARNING

CAUTION

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

Be sure not to do.

Be sure to follow the instruction.

WARNING

■ Installation

Have all electric work done by a licensed electrician according to "Electric Facility Engineering Standard" and "Interior Wire Regulations" and the instructions given in this manual and always use a special circuit.

• If the power source capacity is inadequate or electric work is performed improperly, electric shock or fire may result.

Ask the dealer or an authorized technician to install the air conditioner.

• Improper installation by the user may result in water leakage, electric shock, or fire.

Always ground the product.

• There is risk of fire or electric shock.

Always intstall a dedicated circuit and breaker.

• Improper wiring or installation may cause fire or electric shock.

- 4 -

LGE Internal Use Only

Safety Precautions

For re-installation of the installed product, always contact a dealer or an Authorized Service Center.

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

Do not install, remove, or re-install the unit by yourself (customer).

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

Do not store or use flammable gas or combustibles near the air conditioner.

• There is risk of fire or failure of product.

Use the correctly rated breaker or fuse.

• There is risk of fire or electric shock.

Prepare for strong wind or earthquake and install the unit at the specified place.

• Improper installation may cause the unit to topple and result in injury.

Do not install the product on a defective installation stand.

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

When installing and moving the air conditioner to another site, do not charge it with a different refrigerant from the refrigerant specified on the unit.

• If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may be damaged.

Do not reconstruct to change the settings of the protection devices.

• If the pressure switch, thermal switch, or other protection device is shorted and operated forcibly, or parts other than those specified by LGE are used, fire or explosion may result.

Gasolin

R22

R407C

R410A

- 5 -

LGE Internal Use Only

■ Operation

Safety Precautions

Ventilate before operating air conditioner when gas leaked out.

• It may cause explosion, fire, and burn.

Securely install the cover of control box and the panel.

• If the cover and panel are not installed securely,

dust or water may enter the outdoor unit and fire or electric shock may result.

If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit when the refrigerant leaks.

• Consult the dealer regarding the appropriate measures to prevent the safety limit from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, harzards due to lack of oxygen in the room could result.

Do not damage or use an unspecified power cord.

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

Use a dedicated outlet for this appliance.

• There is risk of fire or electrical shock.

Be cautious that water could not enter the product.

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

Do not touch the power switch with wet hands.

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

- 6 -

LGE Internal Use Only

CAUTION

■ Installation

Safety Precautions

When the product is soaked (flooded or submerged), contact an Authorized Service Center.

• There is risk of fire or electric shock.

Be cautious not to touch the sharp edges when installing.

• It may cause injury.

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

• This could result in personal injury and product damage.

Do not open the inlet grille 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.

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

• Low refrigerant levels may cause failure of product.

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.

Keep level even when installing the product.

• To avoid vibration or water leakage.

Do not install the unit where combustible gas may leak.

• If the gas leaks and accumulates around the unit, an explosion may result.

90˚

Gasolin

- 7 -

LGE Internal Use Only

Safety Precautions

Use power cables of sufficient current carrying capacity and rating.

• Cables that are too small may leak, generate heat, and cause a fire.

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.

Keep the unit away from children. The heat exchanger is very sharp.

• It can cause the injury, such as cutting the finger. Also the damaged fin may result in degradation of capacity.

When installting the unit in a hospital, communication station, or similar place, provide sufficient protection against noise.

•

The inverter equipment, private power generator, high-frequency medical equipment, or radio communication equipment may cause the air conditioner to operate erroneously, or fail to operate. On the other hand, the air conditioner may affect such equipment by creating noise that disturbs medical treatment or image broadcasting.

Do not install the product where it is 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.

- 8 -

LGE Internal Use Only

Safety Precautions

■ Operation

Do not use the air conditioner in special environments.

• Oil, steam, sulfuric smoke, etc. can significantly reduce the performance of the air conditioner or damage its parts.

Do not block the inlet or outlet.

• It may cause failure of appliance or accident.

Make the connections securely so that the outside force of the cable may not be applied to the terminals.

• Inadequate connection and fastening may generate heat and cause a fire.

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, or personal injury.

Install and insulate the drain hose to ensure that water is drained away properly based on the installation manual.

• A bad connection may cause water leakage.

Be very careful about product transportation.

• Only one person should not carry the product if it weighs more than 20 kg.

• Some products use PP bands for packaging. Do not use any PP bands for a means of transportation. It is dangerous.

• Do not touch the heat exchanger fins. Doing so may cut your fingers.

• When transporting the outdoor unit, suspending it at the specified positions on the unit base. Also support the outdoor unit at four points so that it cannot slip sideways.

- 9 -

LGE Internal Use Only

Safety Precautions

Safely dispose of the packing materials.

•

Packing materials, such as nails and other metal or wooden parts, may cause stabs or other injuries.

•

Tear apart and throw away plastic packaging bags so that children may not play with them. If children play with a plastic bag which was not torn apart, they face the risk of suffocation.

Turn on the power at least 6 hours before starting operation.

• Starting operation immediately after turning on the main power switch can result in severe damage to internal parts. Keep the power switch turned on during the operational season.

Do not touch any of the refrigerant piping during and after operation.

• It can cause a burn or frostbite.

Do not operate the air conditioner with the panels or guards removed.

• Rotating, hot, or high-voltage parts can cause injuries.

Do not directly turn off the main power switch after stopping operation.

• Wait at least 5 minutes before turning off the main power switch. Otherwise it may result in water leakage or other problems.

Auto-addressing should be done in condition of connecting the power of all indoor and outdoour units. Auto-addressing should also be done in case of changing the indoor unit PCB.

Use a firm stool or ladder when cleaning or maintaining the air conditioner.

• Be careful and avoid personal injury.

Do not insert hands or other objects through the air inlet or outlet while the air conditioner is plugged in.

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

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LGE Internal Use Only

Part 1

General Information

1. Model Names ................................................................11

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

1.2 Outdoor Unit..........................................................11

2. External Appearance.....................................................12

2.1 Indoor Unit.............................................................12

2.2 Outdoor Unit..........................................................13

3. Combination of Outdoor Units.....................................14

4. Nomenclature.................................................................15

4.1 Indoor Unit.............................................................15

4.2 Outdoor Unit..........................................................15

5. Outdoor Units information............................................16

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LGE Internal Use Only

1. Model Names

1.1 Indoor Unit

1.2 Outdoor Unit

Model Names

These are model names of the basic function.

Cooling Only ARUV

Heat Pump ARUN

Power Supply 5HP 6HP 8HP 10HP 12HP 14HP 16HP 18HP 20HP 22HP

3Ø, 380 ~ 415V, 50Hz 508T1 608T1

808T1S(C/O)

1008T1 1208T1 1408T1 1608T1 1808T1 2008T1 2208T1

808T1(H/P)

Power Supply 24HP 26HP 28HP 30HP 32HP 34HP 36HP 38HP 40HP

3Ø, 380 ~ 415V, 50Hz 2408T1 2608T1 2808T1 3008T1 3208T1 3408T1 3608T1 3808T1 4008T1

Wall Mounted

SE ARNU07GSE*1 ARNU09GSE*1 ARNU12GSE*1

(General)

S5 ARNU18GS5*1 ARNU24GS5*1

Mirror

SE ARNU07GSE*1 ARNU09GSE*1 ARNU12GSE*1 S3 ARNU18GS3*1 ARNU24GS3*1

ART COOL

SP ARNU07GSP*1 ARNU09GSP*1 ARNU12GSP*1

ART COOL Wide

SV ARNU18GSV*1

1 Way

TJ ARNU07GTJ*1 ARNU09GTJ*1 ARNU12GTJ*1

2 Way

TL ARNU18GTL*1 ARNU24GTL*1

4 Way

TE ARNU09GTE*1 ARNU12GTE*1 ARNU18GTE*1 TH ARNU24GTH*1 ARNU28GTH*1 TD ARNU36GTD*1 ARNU42GTD*1 ARNU48GTD*1 BH ARNU07GBHA1 ARNU09GBHA1 ARNU12GBHA1 ARNU15GBHA1 ARNU18GBHA1 ARNU24GBHA1

High Static

BG ARNU28GBGA1 ARNU36GBGA1 ARNU42GBGA1 BR ARNU48GBRA1

Low Static

B1 ARNU07GB1G1 ARNU09GB1G1 ARNU12GB1G1 B2 ARNU18GB2G1 ARNU24GB2G1

ARNU07GB3G1 ARNU09GB3G1 ARNU12GB3G1

B3 PBSGB10 PBSGB10 PBSGB10

Built-in

PBSC10 PBSC10 PBSC10

ARNU18GB4G1 ARNU24GB4G1

B4 PBSGB20 PBSGB20

PBSC20 PBSC20

VE ARNU09GVEA1 ARNU12GVEA1

Ceiling Suspended

VJ ARNU18GVJA1 ARNU24GVJA1

With Case

CE ARNU07GCEA1 ARNU09GCEA1 ARNU12GCEA1 CF ARNU18GCFA1 ARNU24GCFA1

Without Case

CE ARNU07GCEU1 ARNU09GCEU1 ARNU12GCEU1 CF ARNU18GCFU1 ARNU24GCFU1

Capacity(Btu/h(kW))

Category

Chassis

Name

7k 9k 12k 15k 18k 24k 28k 36k 42k 48k

(2.2) (2.8) (3.6) (4.5) (5.6) (7.1) (8.2) (10.6) (12.3) (14.1)

Ceiling Concealed Duct

Ceiling & Floor

Floor Standing

Ceiling Cassette

ART COOL

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LGE Internal Use Only

External Appearance

2. External Appearance

2.1 Indoor Units

These are model names of the basic function.

Wall Mounted

ART COOL

ART COOL Wide

ART COOL Mirror

Ceiling Cassette- 1Way

Ceiling Cassette- 4Way

Ceiling & Floor

Ceiling Suspended

ARNU07GTJA1 ARNU09GTJA1 ARNU12GTJA1

Ceiling Cassette -2Way

ARNU18GTLA1 ARNU24GTLA1

ARNU09GTEA1 ARNU12GTEA1 ARNU18GTEA1 ARNU24GTHA1 ARNU28GTHA1 ARNU36GTDA1 ARNU42GTDA1 ARNU48GTDA1

Ceiling Concealed Duct - Low Static

ARNU07GB1G1 ARNU09GB1G1 ARNU12GB1G1 ARNU18GB2G1 ARNU24GB2G1

ARNU07GSEA1 ARNU09GSEA1 ARNU12GSEA1 ARNU18GS5A1 ARNU24GS5A1

ARNU07GSE*1 ARNU09GSE*1 ARNU12GSE*1 ARNU18GS3*1 ARNU24GS3*1

ARNU07GSP*1 ARNU09GSP*1 ARNU12GSP*1

ARNU18GSV*1

Ceiling Concealed Duct-Built in

ARNU09GVEA1 ARNU12GVEA1

ARNU18GVJA1 ARNU24GVJA1

Floor Standing With case

ARNU07GCEA1 ARNU09GCEA1 ARNU12GCEA1 ARNU18GCFA1 ARNU24GCFA1

Without case

ARNU07GCEU1 ARNU09GCEU1 ARNU12GCEU1 ARNU18GCFU1 ARNU24GCFU1

Ceiling Concealed Duct - High Static

ARNU18GBHA1 ARNU24GBHA1 ARNU28GBGA1 ARNU36GBGA1 ARNU42GBGA1 ARNU48GBRA1

ARNU07GBHA1 ARNU09GBHA1 ARNU12GBHA1 ARNU15GBHA1

ARNU07GB3G1+PBSGB10(Acc'y), PBSC10(Acc'y) ARNU09GB3G1+PBSGB10(Acc'y), PBSC10(Acc'y) ARNU12GB3G1+PBSGB10(Acc'y), PBSC10(Acc'y) ARNU18GB4G1+PBSGB20(Acc'y), PBSC20(Acc'y) ARNU24GB4G1+PBSGB20(Acc'y), PBSC20(Acc'y)

S3:* B : Blue

M : Metal D : Wood R : Mirror C : Cherry W : White

SE:* R:Mirror

V:Silver B : Blue

* B : Blue M : Metal

D : Wood W : White

* B : Blue M : Metal

D : Wood W : White

- 13 -

LGE Internal Use Only

External Appearance

2.2 Outdoor Units

ARUV508T1 / ARUN508T1 ARUV608T1 / ARUN608T1 ARUV808T1S

ARUN808T1 ARUV1008T1 / ARUN1008T1 ARUV1208T1 / ARUN1208T1 ARUV1408T1 / ARUN1408T1

ARUV1608T1 / ARUN1608T1 ARUV1808T1 / ARUN1808T1 ARUV2008T1 / ARUN2008T1 ARUV2208T1 / ARUN2208T1 ARUV2408T1 / ARUN2408T1

ARUV2608T1 / ARUN2608T1 ARUV2808T1 / ARUN2808T1 ARUV3008T1 / ARUN3008T1 ARUV3208T1 / ARUN3208T1 ARUV3408T1 / ARUN3408T1 ARUV3608T1 / ARUN3608T1 ARUV3808T1 / ARUN3808T1 ARUV4008T1 / ARUN4008T1

5, 6, 8HP 8, 10, 12, 14HP

16, 18, 20, 22, 24HP

26, 28, 30, 32, 34, 36, 38, 40HP

- 14 -

LGE Internal Use Only

Combination of Outdoor Units

3. Combination of Outdoor Units

■ Up to a maximum 40HP are realized by combining 8, 10, 12 and 14HP

System Capacity Number of Units

50Hz

Module

56 8101214

Main Sub Main Sub Main Sub Main Sub Main Sub Main Sub

5HP 1 1 6HP 1 1

8HP 1 1 10HP 1 1 12HP 1 1 14HP 1 1 16HP 2 1 1 18HP 2 1 1 20HP 2 1 1 22HP 2 1 1 24HP 2 1 1 26HP 3 2 1 28HP 3 1 1 1 30HP 3 1 2 32HP 3 2 1 34HP 3 1 1 1 36HP 3 1 2 38HP 3 21 40HP 3 111

- 15 -

LGE Internal Use Only

Nomenclature

4. Nomenclature

4.1 Indoor Unit

4.2 Outdoor Unit

ARN U G07 ATJ 1

Serial Number

Chassis Name Electrical Ratings

1:1Ø, 115V, 60Hz 2: 1Ø, 220V, 60Hz 6:1Ø, 220 ~ 240V, 50Hz 7: 1Ø, 100V, 50/60Hz G:1Ø, 220 ~ 240V, 50Hz / 220V 60Hz

Total Cooling Capacity in Btu/h unit EX) 5,000 Btu/h➞'05' 18,000 Btu/h➞'18'

Combination of Inverter Type and Cooling Only or Heat Pump

N: AC Inverter and H/P V: AC Inverter and C/O U: DC Inverter and H/P and C/O

Indicates that this is System Indoor Unit using the R410A

ARU N 8100 T1

Serial Number Air Discharge Type

S:Side Discharge T:Top Discharge

Electrical Ratings

8:3Ø, 380 ~ 415V, 50Hz 9: 3Ø, 380V, 60Hz A: 3Ø, 220V, 50Hz B: 3Ø, 220V, 60Hz

Total Cooling Capacity in Horse Power(HP) unit EX) 4.5HP➞'45' 10HP➞'100'

Combination of Inverter Type and Cooling Only or Heat Pump N: AC Inverter and H/P V: AC Inverter and C/O H: H/P(Sub Unit) C: C/O(Sub Unit) B: AC Inverter and Heat Recovery S: Heat Recovery (Sub Unit)

Indicates that this is System Outdoor Unit using the R410A

Combinations of functions A:Basic function G:Low Static Motor L:Nano Plasma(Wall Mounted) C:Plasma(Ceiling Cassette) Q:Plasma(Low Static Duct) ART COOL Type Panel Color B:Blue D:Wood M:Metal R:Mirror W:White C:Cherry V:Silver

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LGE Internal Use Only

5. Outdoor Units Information

Outdoor units Information

CAUTION: A ratio of the connectable Indoor Units with the Outdoor: Within 50 ~ 130%

A ratio of the running Indoor Units with the Outdoor: Within 10 ~ 100% (A combinated operation over 100% causes to reduce the total capacity.)

Power Supply: Outdoor Unit (3Ø, 380 ~ 415V, 50Hz)

■ Cooling Only

Unit System(HP) Model Product Charge kg CF(Correction Factor) kg Max. Connectable No. of Indoor Units Net Weight kg

lbs

Dimensions (W*H*D) mm

inch

Connecting Pipes Liquid Pipes[mm(inch)]

Gas Pipes[mm(inch)]

1 Outdoor Unit(Half size) 1 Outdoor Unit

568101214

ARUV508T1 ARUV608T1 ARUV808T1S ARUV1008T1 ARUV1208T1 ARUV1408T1

4 4.5 5 8 8 8 001012 6 8 13 16 20 20

150 150 150 300 300 300

330.7 330.7 330.7 661.4 661.4 661.4

806 * 1607 * 730 806 * 1607 * 730 806 * 1607 * 730 1280 * 1607 * 730 1280 * 1607 * 730 1280 * 1607 * 730

31.7 * 63.3 * 28.74 31.7 * 63.3 * 28.74 31.7 * 63.3 * 28.74 50.4 * 63.3 * 28.74 50.4 * 63.3 * 28.74 50.4 * 63.3 * 28.74 Ø9.52(3/8) Ø9.52(3/8) Ø9.52(3/8) Ø9.52(3/8) Ø12.7(1/2) Ø12.7(1/2)

Ø15.88(5/8) Ø19.05(3/4) Ø19.05(3/4) Ø22.2(7/8) Ø28.58(1 1/8) Ø28.58(1 1/8)

Unit System(HP) Model

Product Charge kg CF(Correction Factor) kg Max. Connectable No. of Indoor Units Net Weight kg

lbs

Dimensions (W*H*D) inch

mm

Connecting Pipes Liquid Pipes[mm(inch)]

Gas Pipes[mm(inch)]

2 Outdoor Units

3 Outdoor Units

16 18 20 22 24 26

ARUV1608T1 ARUV1808T1 ARUV2008T1 ARUV2208T1 ARUV2408T1 ARUV2608T1

ARUV808T1 ARUV1008T1 ARUV1008T1 ARUV1208T1 ARUV1208T1 ARUV1008T1 ARUC808T1 ARUC808T1 ARUC1008T1 ARUC1008T1 ARUC1208T1 ARUC808T1

ARUC808T1

16 16 16 16 16 24

-2 -1 0 1 2 -2

20 20 20 22 24 32

300x2 300x2 300x2 300x2 300x2 300x3

661.4x2 661.4x2 661.4x2 661.4x2 661.4x2 661.4x3 (1280 * 1607 * 730)x2 (1280 * 1607 * 730)x2 (1280 * 1607 * 730)x2 (1280 * 1607 * 730)x2 (1280 * 1607 * 730)x2 (1280 * 1607 * 730)x3 (50.4 * 63.3 * 28.74)x2 (50.4 * 63.3 * 28.74)x2 (50.4 * 63.3 * 28.74)x2 (50.4 * 63.3 * 28.74)x2 (50.4 * 63.3 * 28.74)x2 (50.4 * 63.3 * 28.74)x3

Ø12.7(1/2) Ø15.88(5/8) Ø15.88(5/8) Ø15.88(5/8) Ø15.88(5/8) Ø19.05(3/4)

Ø28.58(1 1/

8) Ø28.58(1

1

/

8) Ø28.58(1

1

/

8) Ø28.58(1

1

/

8)

Ø34.9(1

3

/

8

) Ø34.9(1

3

/

8

)

Unit System(HP) Model

Product Charge kg CF(Correction Factor) kg Max. Connectable No. of Indoor Units Net Weight kg

lbs

Dimensions (W*H*D) mm

inch

Connecting Pipes Liquid Pipes[mm(inch)]

Gas Pipes[mm(inch)]

3 Outdoor Units

28 30 32 34 36 38 40

ARUV2808T1 ARUV3008T1 ARUV3208T1 ARUV3408T1 ARUV3608T1 ARUV3808T1 ARUV4008T1 ARUV1008T1 ARUV1008T1 ARUV1208T1 ARUV1208T1 ARUV1208T1 ARUV1408T1 ARUV1408T1 ARUC1008T1 ARUC1008T1 ARUC1008T1 ARUC1208T1 ARUC1208T1 ARUC1208T1 ARUC1408T1

ARUC808T1 ARUC1008T1 ARUC1008T1 ARUC1008T1 ARUC1208T1 ARUC1208T1 ARUC1208T1

24 24 24 24 24 24 24

-1 0 1 2 3 4 5

32 32 32 34 36 38 40

300x3 300x3 300x3 300x3 300x3 300x3 300x3

661.4x3 661.4x3 661.4x3 661.4x3 661.4x3 661.4x3 661.4x3

(1280 * 1607 * 730)x3 (1280 * 1607 * 730)x3 (1280 * 1607 * 730)x3 (1280 * 1607 * 730)x3 (1280 * 1607 * 730)x3 (1280 * 1607 * 730)x3 (1280 * 1607 * 730)x3

(50.4 * 63.3 * 28.74)x3 (50.4 * 63.3 * 28.74)x3 (50.4 * 63.3 * 28.74)x3 (50.4 * 63.3 * 28.74)x3 (50.4 * 63.3 * 28.74)x3 (50.4 * 63.3 * 28.74)x3 (50.4 * 63.3 * 28.74)x3 Ø19.05(3/4) Ø19.05(3/4) Ø19.05(3/4) Ø19.05(3/4) Ø19.05(3/4) Ø19.05(3/4) Ø19.05(3/4)

Ø34.9(1 3/8

) Ø34.9(1 3/8

) Ø41.3(1 5/8

)

- 17 -

LGE Internal Use Only

Outdoor units Information

■ Heat Pump

Unit System(HP) Model Product Charge kg CF(Correction Factor) kg Max. Connectable No. of Indoor Units Net Weight kg

lbs

Dimensions (W*H*D) mm

inch

Connecting Pipes Liquid Pipes[mm(inch)]

Gas Pipes[mm(inch)]

1 Outdoor Unit(Half size)

1 Outdoor Unit

568101214

ARUN508T1 ARUN608T1 ARUN808T1 ARUN1008T1 ARUN1208T1 ARUN1408T1

4 4.5 8 8 8 8 00-1012 6 8 13 16 20 20

150 150 300 300 300 300

330.7 330.7 661.4 661.4 661.4 661.4

806 * 1607 * 730 806 * 1607 * 730 1280 * 1607 * 730 1280 * 1607 * 730 1280 * 1607 * 730 1280 * 1607 * 730

31.7 * 63.3 * 28.74 31.7 * 63.3 * 28.74 50.4 * 63.3 * 28.74 50.4 * 63.3 * 28.74 50.4 * 63.3 * 28.74 50.4 * 63.3 * 28.74

Ø9.52(3/8) Ø9.52(3/8) Ø9.52(3/8) Ø9.52(3/8) Ø12.7(1/2) Ø12.7(1/2)

Ø15.88(5/8) Ø19.05(3/4) Ø19.05(3/4) Ø22.2(7/8)

Ø28.58(1

1

/

8) Ø28.58(1

1

/

8)

Unit System(HP) Model

Product Charge kg CF(Correction Factor) kg Max. Connectable No. of Indoor Units Net Weight kg

lbs

Dimensions (W*H*D) mm

inch

Connecting Pipes Liquid Pipes[mm(inch)]

Gas Pipes[mm(inch)]

2 Outdoor Units

3 Outdoor Units

16 18 20 22 24 26

ARUN1608T1 ARUN1808T1 ARUN2008T1 ARUN2208T1 ARUN2408T1 ARUN2608T1

ARUN808T1 ARUN1008T1 ARUN1008T1 ARUN1208T1 ARUN1208T1 ARUN1008T1 ARUH808T1 ARUH808T1 ARUH1008T1 ARUH1008T1 ARUH1208T1 ARUH808T1

ARUH808T1

16 16 16 16 16 24

-2 -1 0 1 2 -2 20 20 20 22 24 32

300x2 300x2 300x2 300x2 300x2 300x3

661.4x2 661.4x2 661.4x2 661.4x2 661.4x2 661.4x3

(1280 * 1607 * 730)x2 (1280 * 1607 * 730)x2 (1280 * 1607 * 730)x2 (1280 * 1607 * 730)x2 (1280 * 1607 * 730)x2

(1280 * 1607 * 730)x3

(50.4 * 63.3 * 28.74)x2 (50.4 * 63.3 * 28.74)x2 (50.4 * 63.3 * 28.74)x2 (50.4 * 63.3 * 28.74)x2 (50.4 * 63.3 * 28.74)x2

(50.4 * 63.3 * 28.74)x3

)

Ø12.7(1/2) Ø15.88(5/8) Ø15.88(5/8) Ø15.88(5/8) Ø15.88(5/8) Ø19.05(3/4)

Ø28.58(1 1/8) Ø28.58(1 1/8) Ø28.58(1 1/8) Ø28.58(1 1/8)

Ø34.9(1 3/8

) Ø34.9(1 3/8

)

Unit System(HP) Model

Product Charge kg CF(Correction Factor) kg Max. Connectable No. of Indoor Units Net Weight kg

lbs

Dimensions (W*H*D) mm

inch

Connecting Pipes Liquid Pipes[mm(inch)]

Gas Pipes[mm(inch)]

3 Outdoor Units

28 30 32 34 36 38 40

ARUN2808T1 ARUN3008T1 ARUN3208T1 ARUN3408T1 ARUN3608T1 ARUN3808T1 ARUN4008T1 ARUN1008T1 ARUN1008T1 ARUN1208T1 ARUN1208T1 ARUN1208T1 ARUN1408T1 ARUN1408T1 ARUH1008T1 ARUH1008T1 ARUH1008T1 ARUH1208T1 ARUH1208T1 ARUH1208T1 ARUH1408T1

ARUH808T1 ARUH1008T1 ARUH1008T1 ARUH1008T1 ARUH1208T1 ARUH1208T1 ARUH1208T1

24 24 24 24 24 24 24

-1 0 1 2 3 4 5 32 32 32 34 36 38 40

300x3 300x3 300x3 300x3 300x3 300x3 300x3

661.4x3 661.4x3 661.4x3 661.4x3 661.4x3 661.4x3 661.4x3

(1280 * 1607 * 730)x3 (1280 * 1607 * 730)x3 (1280 * 1607 * 730)x3 (1280 * 1607 * 730)x3 (1280 * 1607 * 730)x3 (1280 * 1607 * 730)x3 (1280 * 1607 * 730)x3

(50.4 * 63.3 * 28.74)x3 (50.4 * 63.3 * 28.74)x3 (50.4 * 63.3 * 28.74)x3 (50.4 * 63.3 * 28.74)x3 (50.4 * 63.3 * 28.74)x3 (50.4 * 63.3 * 28.74)x3 (50.4 * 63.3 * 28.74)x3

Ø19.05(3/4) Ø19.05(3/4) Ø19.05(3/4) Ø19.05(3/4) Ø19.05(3/4) Ø19.05(3/4) Ø19.05(3/4) Ø34.9(1 3/8

) Ø34.9(1 3/8

) Ø41.3(1 5/8

)

- 18 -

LGE Internal Use Only

- 19 -

LGE Internal Use Only

Part 2

Indoor Units

Ceiling Cassette

1 Way...............................................................................21

2 Way...............................................................................29

4 Way...............................................................................39

Art Cool Series

Art Cool............................................................................51

Art Cool(Wide) .................................................................65

Art Cool(Mirror)................................................................79

Ceiling Concealed Duct

Low Static ........................................................................95

Built In............................................................................105

High Static......................................................................115

Wall Mounted(General)

Wall Mounted.................................................................127

Convertible

Convertible.....................................................................141

Floor Standing

Floor Standing................................................................153

- 20 -

LGE Internal Use Only

- 21 -

LGE Internal Use Only

1. Specifications.............................................................................22

2. Functions ....................................................................................23

3. Operation Details........................................................................24

4. Dimensions.................................................................................26

5. Piping Diagrams.........................................................................27

6. Wiring Diagrams.........................................................................28

Ceiling Mounted Cassette Type (1Way)

- 22 -

LGE Internal Use Only

1. Specification

Specification

Type Model Unit

W

Cooling Capacity kcal/h

Btu/h

W

Heating Capacity kcal/h

Btu/h

Casing

Body

mm

Dimensions (W*D*H)

inch

Front Panel

mm inch

Coil

Rows x Columns x FPI Face Area m

2

Type Motor Output x Number

W

Running Current A

Fan Air Flow Rate(H/M/L) cmm

cfm Drive Motor type

Temperature Control Sound Absorbing Thermal Insulation Material Safety Device

Liquid Side mm(inch)

Pipe Connections

Gas Side mm(inch) Drain Pipe(Internal Dia.)

mm

Net Weight kg(lbs) Noise Level

(Sound Press, 1.5m, H/M/L)

dBA±3

Power Supply Ø / V / Hz Refrigerant Control

Power cable Transmission cable Panel Color Panel Name(Acc'y)

1Way Ceiling Cassette

ARNU07GTJ*1 ARNU09GTJ*1 ARNU12GTJ*1

2,200 2,800 3,600 1,900 2,400 3,100 7,500 9,600 12,300 2,500 3,200 4,000 2,200 2,800 3,400 8,500 10,900 13,600

Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate

860x410x138 860x410x138 860x410x138

33.8x16.1x5.4 33.8x16.1x5.4 33.8x16.1x5.4 1070x480x20 1070x480x20 1070x480x20

42.1x18.9x0.8 42.1x18.9x0.8 42.1x18.9x0.8

2x9x21 2x9x21 2x9x21

0.13 0.13 0.13

Cross Flow Fan Cross Flow Fan Cross Flow Fan

45 45 45

0.18 0.18 0.18

7.5/6.5/6 7.5/6.5/6 8/7/6

265/229/212 265/229/212 283/247/212

Direct Direct Direct BLDC BLDC BLDC

Microprocessor, Thermostat for cooling and heating Microprocessor, Thermostat for cooling and heating Microprocessor, Thermostat for cooling and heating

Foamed polystrene Foamed polystrene Foamed polystrene

Fuse Fuse Fuse Ø6.35(1/4) Ø6.35(1/4) Ø6.35(1/4) Ø12.7(1/2) Ø12.7(1/2) Ø12.7(1/2)

25.0 25.0 25.0 15(33.1) 15(33.1) 15(33.1) 40/38/37 40/38/37 41/39/37

1, 220 ~ 240, 50 1, 220 ~ 240, 50 1, 220 ~ 240, 50

1, 220, 60 1, 220, 60 1, 220, 60

EEV EEV EEV

CV2.0 X 3C CV2.0 X 3C CV2.0 X 3C

CVV-SB 1.25 X 2C CVV-SB 1.25 X 2C CVV-SB 1.25 X 2C

Morning fog Morning fog Morning fog

PT-HJ*

Notes:-

1. Capacities are based on the following conditions: Cooling • Indoor temp. 27°C[80.6°F]DB/ 19°C[66.2°F]WB

• Outdoor temp. 35°C[95°F]DB/ 24°C[75.2°F]WB

• Interconnecting Piping Length 7.5m

• Level Difference of Zero

Heating • Indoor temp. 20°C[68°F]DB/ 15°C[59°F]WB

• Outdoor temp. 7°C[44.6°F]DB/ 6°C[42.8°F]WB

• Interconnecting Piping Length 7.5m

• Level Difference of Zero

2. Capacities are Net Capacities

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

4. EEV : Electronic Expansion Valve

5. To be added for more available Models

* Model Name

A:Basic, C:Plasma

- 23 -

LGE Internal Use Only

Specification

2. Functions

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

Room temperature control

Starting Current Control

Indoor Fan Speed Control

Soft Dry Operation Mode

Airflow Direction Control

Deice (defrost) control (Heating)

Auto Restart

Hot-start Control (Heating)

• The indoor fan does not rotate until the evaporator piping temperature will be reached at 25°C.

Compact and light design

• To install a unit is very convenient because of smaller size than textile.

Low noise

• The most advanced low-noise design.

• The adoption of turbo fan and round type heat exchanger give the quietest operation.

Long life filter

• Long life wrinkle(type) and washable and anti-bacteria filter is adopted.

High head Drain pump

• Built-in drain pump automatically drains water.

• A standard drain-head height of up to 700mm is possible.

High-Ceiling corresponding Function

• According to the height of ceiling, the RPM of indoor fan motor is selected to increase air reaching distance.

Central Control(Optional)

•

It is operating individually or totally by central control function.

• Room temperature sensor. (Thermistor)

•

Maintains the room temperature in accordance with the Setting Temperature.

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

• Jet, High, Med, Low, Lolow

• Intermittent operation of fan at low speed.

• The louver can be set at swing up and down automatically.

• Although the air-conditioner is turned off by a power failure, it is restarted automatically previous operation mode after power supply.

• Both the indoor and outdoor fan stops during defrosting.

• Hot start after defrost ends.

- 24 -

LGE Internal Use Only

3. Operation Detail

■ Auto Swing Control

• This function is to swing the louver up and down automatically.

■ Soft-Dry Operation

• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of already being set to the best speed for Dry Operation by microcontroller control.

■ Cooling Mode Operation

• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller and the operation diagram is as following

(1) The function of main control

Operation Detail

Thermal ON Thermal OFF

Indoor Unit mode ST+0.5 ST-0.5

2TH (Remo.+Indoor)

To be selected higher temperature To be selected higher temperature

contrast Indoor Unit and Remo. contrast Indoor Unit and Remo.

Remo. Mode ST+0.5 ST-0.5

Intake Air Temperature

Thermo. ON (SET TEMPERATURE +0.5°C)

Thermo. OFF (SET TEMPERATURE -0.5°C)

More than More than

3 minutes 3 minutes

Selected Selected Selected

Speed Speed Speed

INDOOR FAN Low Low

- 25 -

LGE Internal Use Only

■ Heating Mode Operation

The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.

■ Hot-start Control

The indoor fan does no rotate until the evaporator piping temperature will be reached to 25°C.

The operation diagram is as following.

25 °C

27 °C

35 °C 30 °C

22 °C

Pipe

temperature

OFF

Indoor fan

speed

LO

LOW

SELECTED

FAN

LOW

LOLOW

COMP ON

Operation Detail

Thermal

OFF

ON

OFF ON

ON ON

Outdoor fan Indoor fan

4 Way ON

Room Temperature

Thermal Off

Thermal On

Indoor pipe Temperature

33(39)°C 25°C

22(20)°C

36(42)°C

Minimum

3min

Setting

fan

speed

Setting

fan

speed

Setting

fan

speed

Stop Low

Stop StopLow

LowLow Low

Thermal ON Thermal OFF

Indoor Unit mode ST+2 ST+4

2TH To be selected lower temperature To be selected lower temperature

(Remo.+Indoor) contrast Indoor Unit and Remo. contrast Indoor Unit and Remo.

Remo. mode ST+0 ST+2

- 26 -

LGE Internal Use Only

4. Dimensions

Dimensions

ARNU07GTJ*1 ARNU09GTJ*1 ARNU12GTJ*1

4

1

2

3

860

32.8

410

344.4

961.2

16.5

19.1

50

83

36

30

242.5 173

151

100

56

83

138

131

110

16.4

.

198.8

480

939

1070

Number Name Descripition

1 Liquid pipe connection ø6.35 flare 2 Gas pipe connection ø12.7 flare 3 Air suction grill 4 Air discharge grill

5. Piping Diagrams

Piping Diagrams

- 27 -

LGE Internal Use Only

Heat Exchanger

C.F.F.

lndoor unit

: Thermistor

EEV

Filter

:Heating

:Cooling

Refrigerant pipe connection port diameter

Model ARNU07GTJ*1 ARNU09GTJ*1 ARNU12GTJ*1

Gas

12.7(1/2)

Liquid

6.35(1/4)

[unit: mm(inch)]

- 28 -

LGE Internal Use Only

6. Wiring Diagrams

Wiring Diagrams

(Accessory)

Sub PCB

DRY

CONTACT

EEL

CONNECTOR NUMBER LOCATION POINT FUNCTION

CN-POWER AC POWER SUPPLY AC POWER LINE INPUT FOR INDOOR CONTROLLER

CN-MOTOR2 FAN MOTOR OUTPUT MOTOR OUTPUT OF BLDC

CN-D/PUMP DRAIN PUMP OUTPUT AC OUTPUT FOR DRAIN PUMP

CN-COMM COMMUNICATION CONNECTION BETWEEN INDOOR AND OUTDOOR

CN-DISP1 DISPLAY DISPLAY OF INDOOR STATUS

CN-EEV EEV OUTPUT EEV CONTROL OUTPUT

CN-STEP/M1 STEP MOTOR STEP MOTOR OUTPUT

CN-FLOAT FLOAT SWITCH INPUT FLOAT SWITCH SENSING

CN-PIPE PIPE SENSOR PIPE THERMISTOR CN-PIPE/O DISCHARGE PIPE SENSOR DISCHARGE PIPE THERMISTOR CN-ROOM ROOM SENSOR ROOM THERMISTOR CN-REMO REMOTE CONTROLLER REMOTE CONTROL LINE

- 29 -

LGE Internal Use Only

1. Specifications.............................................................................30

2. Functions ....................................................................................32

3. Operation Details........................................................................33

4. Dimensions.................................................................................35

5. Piping Diagrams.........................................................................36

6. Wiring Diagrams.........................................................................37

Ceiling Mounted Cassette Type (2Way)

- 30 -

LGE Internal Use Only

1. Specification

Specification

Type Model Unit

W

Cooling Capacity kcal/h

Btu/h

W

Heating Capacity kcal/h

Btu/h

Casing

Body

mm

Dimensions (W*D*H)

inch

Front Panel

mm

inch

Coil

Rows x Columns x FPI Face Area m

2

Type Motor Output x Number

W

Running Current A

Fan Air Flow Rate(H/M/L) cmm

cfm Drive Motor type

Temperature Control Sound Absorbing Thermal Insulation Material Safety Device

Liquid Side mm(inch)

Pipe Connections

Gas Side mm(inch) Drain Pipe(Internal Dia.)

mm

Net Weight kg(lbs) Noise Level

(Sound Press, 1.5m, H/M/L)

dBA±3

Power Supply Ø / V / Hz Refrigerant Control

Power cable Transmission cable Panel Color Panel Name(Acc'y)

2Way Ceiling Cassette

ARNU18GTL*1

5,600 4,800

19,100

6,300 5,400

21,500

Galvanized Steel Plate

830x550x225

32.6x21.6x8.9

1050x640x28.5

41.3x25.2x1.1 2x11x20

0.13

Cross Flow Fan

70

0.36

13/12/10

459/424/353

Direct

BLDC

Microprocessor, Thermostat for cooling and heating

Foamed polystrene

Fuse Ø6.35(1/4) Ø12.7(1/2)

25.0 28(61.7) 40/35/30

1, 220 ~ 240, 50

1, 220, 60

EEV

CV2.0 X 3C

CVV-SB 1.25 X 2C

Morning fog

PT-HL*

Notes:-

1. Capacities are based on the following conditions: Cooling • Indoor temp. 27°C[80.6°F]DB/ 19°C[66.2°F]WB

• Outdoor temp. 35°C[95°F]DB/ 24°C[75.2°F]WB

• Interconnecting Piping Length 7.5m

• Level Difference of Zero

Heating • Indoor temp. 20°C[68°F]DB/ 15°C[59°F]WB

• Outdoor temp. 7°C[44.6°F]DB/ 6°C[42.8°F]WB

• Interconnecting Piping Length 7.5m

• Level Difference of Zero

2. Capacities are Net Capacities

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

4. EEV : Electronic Expansion Valve

5. To be added for more available Models

* Model Name

A:Basic, C:Plasma

LG ARNU09GTJA1, ARUN Series, ARNU12GTJA1, ARNU18GTLA1, ARNU24GTLA1 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual