LG AS-W126URH1/UBH1/UWH1/UMH1 User manual

LG

Room

Air Conditioner

SERVICE MANUAL

LG

MODELS: AS-W096URH0/UBH0/UWH0/UMH0

AS-W126URH0/UBH0/UWH0/UMH0/UCH0

AS-W096URH1/UBH1/UWH1/UMH1

AS-W126URH1/UBH1/UWH1/UMH1

CAUTION

website http://www.lgservice.com

• BEFORE SERVICING THE UNIT, READ THE SAFETY

PRECAUTIONS IN THIS MANUAL.

• ONLY FOR AUTHORIZED SERVICE PERSONNEL.

2 Room Air Conditioner

Air Conditioner Service Manual

TABLE OF CONTENTS

LG Model Name...............................................................................................................................................3

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

Dimensions ...................................................................................................................................................10

Symbols Used in this Manual...................................................................................................................10

Indoor Unit................................................................................................................................................10

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

Product Specifications ................................................................................................................................12

Installation.....................................................................................................................................................13

Select the Best Location .........................................................................................................................13

Piping Length and Elevation.....................................................................................................................14

Fixing Installation Plate ............................................................................................................................14

Drill a Hole in the Wall..............................................................................................................................15

Flaring Work.............................................................................................................................................15

Connection of Piping ...............................................................................................................................16

Connecting the Cables.............................................................................................................................22

Checking the Drainage.............................................................................................................................24

Forming the Piping...................................................................................................................................25

Air Purging ...............................................................................................................................................26

Test Running ............................................................................................................................................28

Functions ......................................................................................................................................................30

Operation ......................................................................................................................................................33

Disassembly ..................................................................................................................................................47

Indoor Unit................................................................................................................................................47

Schematic Diagram.......................................................................................................................................50

Electric Control device..............................................................................................................................50

Wiring Diagram.........................................................................................................................................52

Components Location ..............................................................................................................................54

Troubleshooting Guide.................................................................................................................................57

Refrigeration Cycle Diagram....................................................................................................................57

Pipe Length and the Elevation .................................................................................................................58

2-way, 3-way Valve...................................................................................................................................59

Cycle Parts...............................................................................................................................................66

Self-diagnosis Function............................................................................................................................67

Electronic Parts........................................................................................................................................69

Exploded View ..............................................................................................................................................80

Indoor Unit................................................................................................................................................80

Outdoor Unit.............................................................................................................................................81

Replacement Parts List ................................................................................................................................82

Indoor.......................................................................................................................................................82

Outdoor ....................................................................................................................................................84

Service Manual 3

LG Model Name

12

3456789

Code Type Code of Model Meaning

1,2 Type of Airconditioner A~Z LS: LG Split Type Airconditioner

3 Chassis A~Z Name of toll of Unit

Ex. LS-R ➔ S R Chassis

4,5 Capacity(Btu/h) 1~9 Cooling/Heating Capacity

Ex. "09" ➔ 9,000Btu/h

6 Electric Range 1~9 Electric Standard

1 ➔ 115V/60Hz 6 ➔ 220~240V/50Hz

2 ➔ 220V/60Hz 7 ➔ 110V, 50/60Hz

3 ➔ 208~230V/60Hz 8 ➔ 380~415V/50Hz

5 ➔ 200~220V/50Hz 9 ➔ 380~415V/60Hz

7 Serial No. 0~9

A~Z

8 Cooling/Heating A~Z

9 LG/OEM Brand A~Z L: LG Brand M: 1st OEM Brand

G: 2nd LG Brand N: 2nd OEM Brand

-

Basic A 0

Plasma Filter B 1

Auto Swing

+ Plasma Filter C 2

Telephone + LED Display D 3

Telephone + LCD Display E 4

Auto Swing

+ Plasma Filter + Telephone + LCD

F5

Low Ambient + Ambient/change G 6

Plasma Filter + Low Ambient + Ambient/change

H7

Internet J 8

Auto Swing + Plasma Filter + Oxygen Generator

K9

Auto Swing + Soft Start ZL

Auto Swing + Star Rating M Y

Auto Swing + Star Rating + Plasma Filter N X

Auto Swing + Soft Start + Star Rating P W

Auto Swing + Soft Start + Star Rating 4 + Plasma

QV

Auto Swing + Telephone + LCD R U

Auto Swing + Telephone + LCD + Soft Start

ST

C/O

C

A

D

G

K

H/P

H

B

E

J

L

E/H+C/O

X

5

7

-

E/H+H/P

Y

6

8

-

C/O

F

M

Q

-

H/P

R

P

S

-

C/O

V

W

1

3

H/P

N

Y

2

4

H/P

T

H/P

U

INDOOR

BASIC

PLASMA

GOLD FIN

OUTDOOR

BASIC

GOLD FIN

BASIC

GOLD FIN

UNIT

R22

HFC R22+AC INV.

HFC+AC

INV.

HFC+DC

INV.

2002

4 Room Air Conditioner

12 - 345678910

Code Type Code of Model Meaning

1 Producing Center, A~Z L: Chang-won R22 N: India

Refrigerant A: Chang-won R410A Z: Brazil

C: Chang-won R407C D: Indonesia

T: China M: Mexico

K: Turkey R22 V: Vietnam

E: Turkey R410A S: Out Sourcing

H: Thailand

2 Product Type A~Z S: Split Type Air Conditioner

3 Cooling/Heating/Inverter A~Z C: Cooling only

H: Heat pump

X: C/O + E/Heater

Z: H/P + E/Heater

V: AC Inverter C/O

N: AC Inverter H/P

Q: DC Inverter C/O

W: DC Inverter H/P

4, 5 Capacity 0~9 Cooling/Heating Capacity

Ex. "09" → 9,000 Btu/h

6 Electric Range 1~9 1: 115V/60Hz, A: 220V, 50Hz, 3Phase

A~Z 2: 220V/60Hz B: 208~230V, 60Hz, 3Phase

3: 208-230V/60Hz C: 575V, 50Hz, 3Phase

5: 200-220V/50Hz D: 440~460, 60Hz, 3Phase

6: 220-240V/50Hz E: 265V, 60Hz

7: 110V, 50/60Hz F: 200V, 50/60Hz

8: 380-415V/50Hz

9: 380-415V/60Hz

7 Chassis A~Z Name of Chassis of Unit

Ex. LSP → SP Chassis

8 Look A~Z Look,

Color (Artcool Model)

9 Function A~Z

10 Serial No. 1~9 LG Model De

* ARTCOOL COLOR

velopment Serial No.

Basic A

Basic+4Way B

Plasma Filter C

Plasma Filter+4 Way D

Tele+LCD E

Tele+LCD+Nano plasma+4Way F

Nano Plasma F+(A/changeove)+A/clean+Low A G

Nano Plasma F+(A/changeove)+A/clean+4way+Low A H

Tele+LED+4way I

Internet J

Plasma F+4Way+Oxy generator K

Nano Plasma F+(A/changeove)+A/clean L

Nano Plasma F+(A/changeove)+A/clean+4way M

Nano Plasma F+(A/changeove)+A/clean+PTC N

Nano Plasma F+(A/changeove)+Autoclean+4way+PTC P

Nano Plasma F+(A/changeove)+A/clean+4way+Low A+PTC Q

Negative ION+A/Clean R

(Nano)Plasma+Negative ION+A/Clean S

4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean

T

Nano Plasma F+4Way+(A/changeove)+A/clean+ U

R Mirror

W White

B Blue

D Wood

M Metal

C Cherry

2003~2005

Service Manual 5

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.

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.

■ Installation

Do not use damaged power cords, plugs, or a

loose socket.

Always use the power plug and socket with the

ground terminal.

• There is risk of fire of electric shock. • There is risk of electric shock.

Install the panel and the cover of control box

securely.

.Do not modify or extend the power cord.

• There is risk of fire of electric shock. • No grounding may cause electric shock.

6 Room Air Conditioner

Safety Precautions

Do not install the product on a defective instal-

lation stand.

Be sure the installation area does not

deteriorate with age.

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

product.

• If the base collapses, the air conditioner could fall

with it, causing property damage, product failure,

and personal injury.

• Sharp edges could cause injury. Be especially care-

ful of the case edges and the fins on the condenser

and evaporator.

•

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

Be cautious when unpacking and installing the

product.

For installation, always contact the dealer or

an Authorized service center

For re-installation of the installed product,

always contact a dealer or an authorized ser-

vice center.

Do not install, remove, or re-install the unit by

yourself.

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

injury.

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

injury.

Service Manual 7

Safety Precautions

■ Operation

Do not turn the air-conditioner ON or OFF by

plugging or unplugging the power plug.

Use a dedicated outlet for this appliance.

• There is risk of fire or electrical shock. • There is risk of fire or electrical shock.

Grasp the plug to remove the cord from the

outlet. Do not touch it with wet hands.

Do not place a heater or other appliances near

the power cable.

• There is risk of fire or electrical shock. • There is risk of fire and electric shock.

Do not allow water to run into electrical parts. Do not store or use flammable gas or com-

bustibles near the air conditioner.

• There is risk of fire, failure of the product, or electric

shock.

• There is risk of fire or failure of product.

Wax

Thinner

8 Room Air Conditioner

Always check for gas (refrigerant) leakage after

installation or repair of product.

Install the drain hose to ensure that water is

drained away properly.

• Low refrigerant levels may cause failure of product. • A bad connection may cause water leakage.

Keep level even when installing the product. Use two or more people to lift and transport

the air conditioner.

• To avoid vibration or water leakage. • Avoid personal injury.

■ Installation

90˚

Unplug the unit if strange sounds, odors, or

smoke comes from it.

Be cautious that water could not enter the

product.

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

age.

Service Manual 9

Use a soft cloth to clean. Do not use harsh

detergents, solvents, etc.

Do not touch the metal parts of the product

when removing the air filter. They are very

sharp!

• There is risk of fire, electric shock, or damage to the

plastic parts of the product.

• There is risk of personal injury.

Do not step on or put anyting on the product.

(outdoor units)

Do not insert hands or other objects through

the air inlet or outlet while the air conditioner

is plugged in.

• There is risk of personal injury and failure of product. • There are sharp and moving parts that could cause

personal injury.

■ Operation

Wax

10 Room Air Conditioner

Dimensions

Indoor Unit

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

Installation plate

D

H

W

MODEL

DIM Unit

W mm 1030

H mm 290

D mm 153

9k, 12k Btu Series

Service Manual 11

Outdoor Unit

Dimensions

W

L2

L3

L1

D

H

L4

L5

Gas side

(3-way valve)

Liquid side

(2-way valve)

MODEL

9k, 12k Btu Series

DIM unit

W mm 770

H mm 540

D mm 245

L1 mm 287

L2 mm 64

L3 mm 518

L4 mm 10

L5 mm 100

Product Specifications

Table-1

Model Name

Item Unit

W

MIN kcal/h.(W)

Btu/h.

W

Cooling Capacity Type kcal/h.(W)

Btu/h.

W

Max kcal/h.(W)

Btu/h.

W

MIN kcal/h.(W)

Btu/h.

W

Heating Capacity Type kcal/h.(W)

Btu/h.

W

Max kcal/h.(W)

Btu/h.

Power Input Cooling W

Heating W

Running Current Cooling A

Heating A

Starting Current Cooling A

Heating A

Cooling kcal/hW

EER Btu/h.W

Heating kcal/hW

Btu/h.W

COP Cooling W/W

Heating W/W

Power Supply Ø,V,Hz

Power Factor %

Air Circulation Indoor,Max m

3

/min(CFM)

Outdoor,Max m

3

/min(CFM)

Moisture Removal l/h.(pts/h.)

Noise Level Indoor,High dB(A)±3

(Sound Med. dB(A)±3

Pressure,1m) Low dB(A)±3

Outdoor,Max dB(A)±3

Refrigerant(R410A)Charge

Power Cord AWG#:P*mm

2

Connecting Cable AWG#:P*mm

2

Connecting Tube Liquid Side mm(in)

(Ø. Socket Flare) Gas Side mm(in)

Length,std m(in)

Drain Hose (O.D , I.D) mm(in)

Indoor mm

Dimension inch

(W*H*D) Outdoor mm

inch

Net Weight Indoor kg(lbs)

Outdoor kg(lbs)

AS-W096U_0 AS-W126U_0 AS-W096U_1 AS-W126U_1

645 820 645 820

554 706 554 706

2,200 2,800 2,200 2,800

2,637 3,516 2,637 3,516

2,268 3,024 2,268 3,024

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

3,246 3,868 3,246 3,868

2,792 3,326 2,792 3,326

11,080 13,200 11,080 13,200

527 1,289 527 1,289

454 1,109 454 1,109

1,800 4,400 1,800 4,400

3,164 3,956 3,164 3,956

2,722 3,402 2,722 3,402

10,800 13,500 10,800 13,500

4,087 4,351 4,087 4,351

3,515 3,742 3,515 3,742

13,950 14,850 13,950 14,850

750 1,098 750 1,090

875 1,410 875 1,410

3.9 5.0 3.5 5.0

4.5 6.2 4.0 6.2

3.9 5.0 3.5 5.0

4.5 6.2 4.0 6.2

3.0 2.8 3.0 2.8

12.00 10.93 12.00 10.93

3.11 2.41 3.11 2.41

12.34 9.57 12.34 9.57

3.52 3.20 3.52 3.20

3.62 2.81 3.62 2.81

1,220-240,50 1,220-240,50 1,220-240,50 1,220-240,50

97 97 97 97

9.0(318) 9.5(335) 9.0(318) 9.5(335)

26(918) 26(918) 26(918) 26(918)

1.5(3.2) 1.5(3.2) 1.5(3.2) 1.5(3.2)

34 35 34 35

32 33 32 33

28 28 28 28

48 48 48 48

770(27.1) 820(28.9) 720(25.3) 810(28.5)

16:3*1.0 16:3*1.5 16:3*1.5 16:3*1.5

16:4*1.0 16:4*1.5 16:4*1.0 16:4*1.5

6.35(1/4) 6.35(1/4) 6.35(1/4) 6.35(1/4)

9.52(3/8) 12.7(1/2) 9.52(3/8) 12.7(1/2)

7.5(295) 7.5(295) 7.5(295) 7.5(295)

21.5,16.0(0.85,0.63) 21.5,16.0(0.85,0.63) 21.5,16.0(0.85,0.63) 21.5,16.0(0.85,0.63)

1030*290*153 1030*290*153 1030*290*153 1030*290*153

40.6*11.4*6.1 40.6*11.4*6.1 40.6*11.4*6.1 40.6*11.4*6.1

770*540*245 770*540*245 770*540*245 770*540*245

30.3*21.3*9.6 30.3*21.3*9.6 30.3*21.3*9.6 30.3*21.3*9.6

9.5(20.9) 9.5(20.9) 9.5(20.9) 9.5(20.9)

37(81.4) 38(83.8) 37(81.4) 38(83.8)

12 Room Air Conditioner

Product Specifications

Installation

Service Manual 13

Installation

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 conve-

niently routed away.

4. Do not install near a doorway.

5. Ensure that the interval between a wall and the left

(or right) of the unit is more than 50cm. The unit

should be installed as high as possible on the wall,

allowing a minimum of 10cm from ceiling.

6. Use a stud finder to locate studs to prevent unneces-

sary 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 radia-

tion from the condenser is not restricted.

2. Ensure that the space around the back and sides is

more than 10cm. The front of the unit should have

more than 70cm of space.

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

warm air.

4. Take the weight of the air conditioner into account

and select a place where noise and vibration are min-

imum.

5. Select a place where the warm air and noise from the

air conditioner do not disturb neighbors.

Select the best Location

More than 10cm

More than

5cm

More than 2.3m

More than

5cm

CAUTION: Install the indoor unit on the wall where the height from the

floor is more than 2 meters.

More than 10cm More than 10cm

More

than 60cm

More than 60cm

More than 70cm

14 Room Air Conditioner

Installation

Piping Length and Elevation

9k 3/8" 1/4" 4 or 5 7 15 20

12k 1/2" 1/4" 4 or 5 7 15 20

Pipe Size

Capacity

(Btu/h)

GAS LIQUID

Max.

Length A (m)

Additional

Refrigerant (g/m)

Max.

Elevation B (m)

Standard

Length (m)

Outdoor unit

Indoor unit

A

B

Outdoor unit

Indoor unit

A

B

A

Oil trap

Outdoor unit

Indoor unit

B

If piping length is more than 5m

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.

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

Installation Plate

Type "A" screw

Installation plate

Ø70mm

Left rear piping Right rear piping

C

D

B

A

Ø70mm

(SU)

ABCD

SU

92 44 67 44

(9k~12k)

CHASSIS

(Grade)

Distance (mm)

Service Manual 15

Installation

• Drill the piping hole with a ø70mm hole core drill.

Drill the piping hole at either the right or the left with

the hole slightly slanted to the outdoor side.

Drill a Hole in the Wall

5-7mm

(3/16"~5/16")

Indoor

WALL

Outdoor

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 out-

door unit.

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

4. Cut the cable 1.5m 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 drop-

ping 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

1. Firmly hold copper pipe in a die in the dimension shown

in the table below.

2. Carry out flaring work with the flaring tool.

Copper

pipe

90°

Slanted Uneven Rough

Pipe

Reamer

Point down

Flare nut

Copper tube

mm inch mm

Ø6.35 1/4 0~0.5

Ø9.52 3/8 0~0.5

Ø12.7 1/2 0~0.5

Ø15.88 5/8 0~1.0

Ø19.05 3/4 1.0~1.3

Outside diameter A

Bar

Copper pipe

Clamp handle

Red arrow mark

Cone

Yoke

Handle

Bar

"A"

16 Room Air Conditioner

Installation

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 the plastic tubing holder in the original posi-

tion.(Optional)

1. Route the indoor tubing and the drain hose in the

direction of rear right.

2.

Insert the connecting cable into the indoor unit from the

outdoor unit through the piping hole.

• Do not connect the cable to the indoor unit.

• Make a small loop with the cable for easy connec-

tion 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.

CAUTION: 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 fur-

niture or floors.

*Foamed polyethylene or equivalent is recom-

mended.

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

Connecting

pipe

Connecting cable

Tape

Drain hose

Service Manual 17

Installation

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 wrap-

ping them with vinyl tape for enough to cover where

they fit into the rear piping housing section.

Drain hose

Connecting

cable

Indoor unit tubing Flare nut Pipes

Wrench

Indoor unit tubing

Open-end wrench (fixed)

Connection pipe

Flare nut

mm inch kg

.

m

Ø6.35 1/4 1.8

Ø9.52 3/8 4.2

Ø12.7 1/2 5.5

Outside diameter Torque

Vinyl tape(narrow)

Adhesive

Drain pipe

Indoor unit drain hose

Plastic bands

Insulation material

Wrap with vinyl tape

Drain hose

Pipe

Vinyl tape(wide)

Vinyl tape(narrow)

Connection pipe

Connecting cable

Vinyl tape (wide)

Wrap with vinyl tape

Indoor unit pipe

Pipe

18 Room Air Conditioner

Installation

1. Route the indoor tubing and the drain hose to the

required piping hole position.

2. Insert the piping, drain hose, and the connecting

cable into the piping hole.

3.

Insert the connecting cable into the indoor unit.

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

• Make a small loop with the cable for easy connec-

tion 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

Drain pipe

Connecting

cable

1 2

Installation plate

Spacer

Indoor unit

8cm

Indoor unit tubing Flare nut Pipes

Wrench

Indoor unit tubing

Connection pipe

Flare nut

Open-end wrench (fixed)

mm inch kg

.

m

Ø6.35 1/4 1.8

Ø9.52 3/8 4.2

Ø12.7 1/2 5.5

Outside diameter Torque

Vinyl tape

Adhesive

Drain hose

Indoor unit drain hose

(narrow)

Service Manual 19

Installation

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 wrap-

ping 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.

Set the pipings and the drain hose to the back of

the chassis with the tubing holder.

• Hook the edge of tubing holder to tap on chassis and

push the bottom of tubing holder to be engaged at the

bottom of 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

Vinyl tape(narrow)

Connection

pipe

Connecting cable

Indoor

unit piping

Pipe

Vinyl tape

(wide)

Wrap with vinyl tape

Drain hose

Vinyl tape(narrow)

Pipe

Wrap with

vinyl tape(wide)

Piping for

passage through

piping hole

Drain hose

Connecting

cable

Tubing holder

20 Room Air Conditioner

Installation

CAUTION: 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.

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LG AS-W126URH1/UBH1/UWH1/UMH1 User manual

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LG AS-W126URH1/UBH1/UWH1/UMH1 User manual

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