LG AS-H076QGA2, AS-H096QGA2, AS-H126RGA2 Service manual

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Page 1

Room

Air Conditioner

SERVICE MANUAL

MODELS: AS-H076QGA2

AS-H096QGA2 AS-H126RGA2 (Applied to new Refrigerant R410A)

CAUTION

website http://www.lgservice.com

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

• ONLY FOR AUTHORIZED SERVICE PERSONNEL.

Page 2

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.....................................................................................................................13

How to Fix Installation Plate.....................................................................................................................14

Drill a Hole in the Wall..............................................................................................................................14

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

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

Connection of the Pipes-Outdoor.............................................................................................................19

Connect the Cable to the Indoor Unit.......................................................................................................20

Connect the Cable to the Outdoor Unit....................................................................................................21

Checking the Drainage.............................................................................................................................22

Form the Piping........................................................................................................................................22

Test Running ............................................................................................................................................23

Operation ......................................................................................................................................................24

Function of Controls.................................................................................................................................24

Display Function.......................................................................................................................................28

Self-diagnosis Function............................................................................................................................28

Remote Control Operations......................................................................................................................29

Disassembly..................................................................................................................................................30

Indoor Unit................................................................................................................................................30

Schematic Diagram.......................................................................................................................................33

Electric Control device..............................................................................................................................33

Wiring Diagram.........................................................................................................................................35

Components Location ..............................................................................................................................36

Troubleshooting Guide.................................................................................................................................38

Refrigeration Cycle Diagram....................................................................................................................38

Pipe Length and the Elevation .................................................................................................................39

2-way, 3-way Valve...................................................................................................................................40

Cycle Parts...............................................................................................................................................46

Electronic Parts........................................................................................................................................47

Exploded View ..............................................................................................................................................54

Indoor Unit...............................................................................................................................................54

Outdoor Unit............................................................................................................................................55

Replacement Parts List ................................................................................................................................56

Indoor......................................................................................................................................................56

Outdoor ....................................................................................................................................................57

Page 3

Service Manual 3

LG Model Name

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

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

1 3

H/P

Y 2 4

H/PTH/P

INDOOR

BASIC

BASIC PLASMA PLASMA

GOLD FIN

OUTDOOR

BASIC GOLD FIN GOLD FIN

BASIC GOLD FIN

UNIT

R22

HFC R22+AC INV.

HFC+AC

INV.

HFC+DC

INV.

2002

Page 4

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

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

R Mirror W White B Blue D Wood M Metal C Cherry

2003

Page 5

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.

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.

■ Installation

Page 6

6 Room Air Conditioner

Safety Precautions

Do not install the product on a defective installation 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 careful 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 service center.

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

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

Page 7

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

Page 8

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 damage.

Page 9

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

Page 10

10 Room Air Conditioner

Dimensions

Installation plate

W mm 824 900

H mm 260 285 D mm 155 156

Model

Dimension

AS-H076QGA2 AS-H096QGA2

AS-H126RGA2

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

Page 11

Service Manual 11

Gas side

(3-way valve)

Liquid side

(2-way valve)

MODEL

7k, 9k, 12k Btu Series

DIM unit

W mm 575

H mm 525

D mm 260 L1 mm 301 L2 mm 73 L3 mm 392 L4 mm 35 L5 mm 100

Dimensions

Outdoor Unit

Page 12

Model Name

Item Unit

Cooling Capacity

Btu/h

Heating Capacity Moisture Removal l/h Power Source Ø, V, Hz

Air Circulation

Indoor

m3/min

Outdoor

Noise Level

Indoor

dB (A)±3

Outdoor

Input

Cooling

Heating

Running

Cooling

Current

Heating

E.E.R. Cooling

Btu/hW

C.O.P Heating Motor Output

Indoor

Outdoor

Dimensions

Indoor

(W x H x D)

Outdoor

Net. Weight

Indoor

Outdoor Refrigerant (R410A) g Airflow Direction Control (Up & Down) Airflow Direction Control (Left & Right) Chaos Wind Timer Self Diagnosis Remocon Type

Service Valve

Liquid

inch(mm)

Gas Sleeping Operation Drain Hose Connecting Cable Power Cord

12 Room Air Conditioner

Product Specifications

Table-1

7,000 9,000 12,000 7,300 9,300 12,500

11.21.2

1Ø, 220-240V, 50Hz 1Ø, 220-240V, 50Hz 1Ø, 220-240V, 50Hz

5.1 / 5.5 5.9 / 6.6 8.8 / 9.5 20 20 20 34 36 39 49 49 49

730 940 1,250 760 970 1,300

3.2 4.1 5.6

3.3 4.2 5.8

9.59 9.57 9.60

2.81 2.81 2.82

3.7 7.0 9.5 18 18 18

824 x 260 x 155 824 x 260 x 155 900 x 285 x 156 575 x 525 x 260 575 x 525 x 260 575 x 525 x 260

778

25 26 27

640 660 830

OOO

---

OOO

7 Hr OFF 7 Hr OFF 7 Hr OFF

OOO

L.C.D Wireless L.C.D Wireless L.C.D Wireless

1/4" (6.35) 1/4" (6.35) 1/4" (6.35) 3/8" (9.52) 3/8" (9.52) 1/2" (12.7)

OOO OOO

1.0mm2x 3, 0.75mm2x 2 1.0mm2x 3, 0.75mm2x 2 1.0mm2x 3, 0.75mm2x 2

1.0mm

AS-H076QGA2 AS-H096QGA2 AS-H126RGA2

Page 13

Service Manual 13

Installation

Indoor unit

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

• Select a place where there are no obstacles in

front of the unit.

• Make sure that condensation drainage can be conveniently routed away. Do not install near a doorway.

• Ensure that the space around the left and right of the unit is more than "A". The unit should be installed as high on the wall as possible, allowing a minimum of "B" from ceiling.

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

Outdoor unit

• 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.

• 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.

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

• 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 noise from the air conditioner do not disturb neighbors.

More than "A"

More than "B"

More than 2.3m

More than "B"

More than 10cm More than 10cm

More than 60cm

More than 70cm

CAUTION: Install the indoor unit on the wall

where the height from the floors more than 2.3 meters.

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.

Grade

Clearance(cm)

7K~28K 10 5

30K~38K 30 12

Pipe Size

Capacit

(Btu/h)

GAS LIQUID

Max.

Length

(m)

Additional

Refrigerant

(g/m)

Max.

Elevation

B (m)

Standard

Length

(m)

7k~14k

3/8"(Ø9.52) 1/4"(Ø6.35) 4 or 7.5 7 15 20 1/2"(Ø12.7) 1/4"(Ø6.35) 4 or 7.5 7 15 20 1/2"(Ø12.7) 1/4"(Ø6.35) 4 or 7.5 15 30 20

18k~28k 5/8"(Ø15.88) 1/4"(Ø6.35) 4 or 7.5 15 30 20

5/8"(Ø15.88) 3/8"(Ø9.52) 4 or 7.5 15 30 30

30k~38k

5/8"(Ø15.88) 3/8"(Ø9.52) 7.5 15 30 30 3/4"(Ø19.05) 3/8"(Ø9.52) 7.5 15 30 50

If case more than 5m

Outdoor unit

Indoor unit

Outdoor unit

Indoor unit

Oil trap

Outdoor unit

Indoor unit

Selection of the Best Location

Piping Length and Elevation

Page 14

14 Room 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 four 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.

• 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.

• Open the Front Grille.

• Pass Telephone Control Cord Wire through the

hole which the power cord goes through.

• Connect Telephone Control Cord Wire to the phone jack of telephone PCB of Control Box.

• Fix Telephone Control Cord Wire inside Control box so as not to disconnect.

• Close the Front Grille.

Installation Plate

Type "A" screw

5-7mm

(3/16"~5/16")

Indoor

WALL

Outdoor

Installation plate

Ø70mm

Left rear piping Right rear piping

Ø70mm

Left rear piping

Right rear piping

CE A

Installation plateInstallation plate

ABCD

SJ 90 20 80 20

SL, SK 45 40 80 20

SQ 75 12 80 12 SR 0 40 20 40 ST 105 0 210 0

CHASSIS

(Grade)

Distance (mm)

How to Fix Installation Plate Drill a Hole in the Wall

ABCDE SM 180 115 - 115 50 SN 180 115 195 115 -

CHASSIS

(Grade)

Distance (mm)

Page 15

Service Manual 15

Installation

Flaring Work

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

Cut the pipes and the cable.

• Use the piping kit accessory or pipes purchased locally.

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

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

• Cut the cable 1.5m longer than the pipe length.

Burr removal

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

• 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

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

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

Check

• Compare the flared work with figure below.

• If flare is noted to be defective, cut off the flared

section and re-flare it.

Copper

pipe

90°

Slanted Uneven Rough

Bar

Copper pipe

Clamp handle

Red arrow mark

Cone

Yoke

Handle

Bar

"A"

Inclined

Inside is shiny without scratches

Smooth all round

Even length

all round

Surface

damaged

Cracked Uneven

thickness

= Improper flaring =

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

Page 16

16 Room Air Conditioner

Installation

Connection of Piping Indoor

• Preparing the indoor unit's piping and drain hose for installation through the wall.

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

• Replace the plastic tubing holder in the original position.

For right rear piping

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

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

• Do not connect the cable to the indoor unit.

• Make a small loop with the cable for easy

connection later.

3. Tape the tubing, drain hose, and the connecting cable. Be sure that the drain hose is located at the lowest side of the bundle. Locating at the upper 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 recom-

mended.

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).

4. Connecting the pipings to the indoor unit and drain hose to drain pipe.

• Align the center of the pipes and sufficiently tight-

en the flare nut by hand.

NOTICE

CAUTION:

When install, make sure that the remaining

parts must be removed clearly so as not to damage the piping and drain hose, especially power cord and connecting cable.

Tubing holder

Connecting cable

Loop

Gas side piping

Liquid side piping

Drain hose

Connecting

cable

Indoor unit tubing Flare nut Pipes

Drain hose

Page 17

Service Manual 17

Installation

• Tighten the flare nut with a wrench.

• When extending the drain hose at the indoor unit,

install the drain pipe.

5. Wrap the insulation material around the connecting portion.

• Overlap the connection pipe insulation material

and the indoor unit pipe insulation material. Bind them together with vinyl tape so that there is no gap.

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

• 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.

For left rear piping

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

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

mm inch kg.m

Ø6.35 1/4 1.8 Ø9.52 3/8 4.2

Ø12.7 1/2 5.5 Ø15.88 5/8 6.6 Ø19.05 3/4 6.6

Outside diameter Torque

Wrench

Indoor unit tubing

Open-end wrench (fixed)

Connection pipe

Flare nut

Vinyl tape(narrow)

Adhesive

Drain pipe

Indoor unit drain hose

Plastic bands

Insulation material

Vinyl tape(narrow)

Connection pipe

Connecting cable

Vinyl tape (wide)

Wrap with vinyl tape

Indoor unit pipe

Pipe

Drain hose

Connecting

cable

Drain pipe

Connecting cable

Page 18

18 Room Air Conditioner

Installation

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 cable.

• Connecting cable

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.

6. Connecting the pipings to the indoor unit and the drain hose to drain pipe.

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

• Tighten the flare nut with a wrench.

• When extending the drain hose at the indoor unit,

install the drain pipe.

7. Wrap the insulation material around the connecting portion.

• Overlap the connection pipe heat insulation and

the indoor unit pipe heat insulation material. Bind them together with vinyl tape so that there is no gap.

• Wrap the area which accommodates the rear pip-

ing housing section with vinyl tape.

mm inch kg.m

Ø6.35 1/4 1.8 Ø9.52 3/8 4.2

Ø12.7 1/2 5.5 Ø15.88 5/8 6.6 Ø19.05 3/4 6.6

Outside diameter Torque

Vinyl tape

Adhesive

Drain hose

Indoor unit drain hose

(narrow)

Plastic bands

Insulation material

Vinyl tape(narrow)

Connection pipe

Connecting cable

Indoor unit piping

Pipe

Vinyl tape (wide)

Wrap with vinyl tape

Installation plate

Spacer

Indoor unit

8cm

Indoor unit tubing Flare nut Pipes

Wrench

Indoor unit tubing

Connection pipe

Flare nut

Open-end wrench (fixed)

Page 19

Service Manual 19

Installation

• 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.

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

9. 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.

10. Indoor unit installation

• Remove the spacer.

• 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).

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

2. 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.

mm inch kg.m

Ø6.35 1/4 1.8 Ø9.52 3/8 4.2

Ø12.7 1/2 5.5 Ø15.88 5/8 6.6 Ø19.05 3/4 6.6

Outside diameter Torque

Drain hose

Vinyl tape(narrow)

Pipe

Wrap with vinyl tape(wide)

Piping for passage through piping hole

Outdoor unit

Gas side piping (Bigger diameter)

Liquid side piping (Smaller diameter)

Torque wrench

Tubing holder

Drain hose

Connecting

cable

Connection of the Pipes-Outdoor

Page 20

20 Room Air Conditioner

Installation

• Connect the cable to the indoor unit by connecting the wires to the terminals on the control board in dividually 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.

Air

Conditioner

Main power source

Circuit Breaker

Use a circuit breaker or time delay fuse.

NORMAL CROSS-SECTIONAL AREA 0.75mm

CAUTION

The power connecting cable connected to the indoor and outdoor unit should be complied with the following specifications (Type "B" approved by HAR or SAA).

The power cord connected to the "A" unit should be complied with the following specifications(Type "B" approved by HAR or SAA).

7k~14k 18k 24k~28k 30k, 32k 36k, 38k

1.0 1.5 2.5 2.5 5.5

Unit(A) Indoor Indoor Indoor Outdoor Outdoor

Cable Type(B) H05VV-F H05VV-F H05VV-F H05RN-F H05RN-F

NORMAL CROSS

-SECTIONAL AREA

Grade

7k~14k 18k 24k~28k

1.0 1.5 2.5

Cable Type(B) H07RN-F H07RN-F H07RN-F

NORMAL

CROSS

-SECTIONAL AREA

Grade

30k, 32k 36k, 38k

0.75 0.75

Cable Type(B) H07RN-F H07RN-F

NORMAL CROSS

-SECTIONAL AREA

Grade

(mm2)

(mm

)

(mm2)

CAUTION:

• The above circuit diagram is 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 the wiring diagram.

• When installing, refer to the circuit diagram on the Control Box of Indoor Unit.

• When installing, refer to the wiring diagram on the Control Cover Inside Outdoor Unit.

Connect the Cable to the Indoor Unit.

CAUTION:

If a power plug is not to be used, provide a circuit breaker between power source and the unit as shown below.

Page 21

Service Manual 21

Installation

1. Remove the control cover from the unit by loosening the screw. Connect the wires to the terminals on the control board individually.

2. Secure the cable onto the control board with the cord clamp.

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

4. Use a recognized circuit breaker "A" between the power source and the unit. A disconnecting device to adequately disconnect all supply lines must be fitted.

Terminal block

Over 5mm

Cover control

Connecting cable

CAUTION: After the confirmation of the above conditions, prepare the wiring as

follows:

1) Never fail to have an individual power circuit specifically for the air conditioner. As for the method of wiring, be guided by the circuit diagram posted on the inside of control cover.

2) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from vibrations to which the unit is subjected during the course of transportation. Check them and make sure that they are all tightly fastened. (If they are loose, it could cause burn-out of the wires.)

3) Specification of power source.

4) Confirm that electrical capacity is sufficient.

5) See to that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate.

6) Confirm that the cable thickness is as specified in the power source specification. (Particularly note the relation between cable length and thickness. (Refer to page 20))

7) Always install an earth leakage circuit breaker in a wet or moist area.

8) The following would be caused by voltage drop.

• Vibration of a magnetic switch, which will damage the contact point, fuse breaking, disturbance of the normal func-

tion of the overload.

9) The means for disconnection from a power supply shall be incorporated in the fixed wiring and have an air gap contact separation of at least 3mm in each active(phase) conductors.

Outdoor Unit

7k~14k 18k 24k~28k 30k, 32k 36k, 38k

15 20 30 30 40

Circuit

Breaker

(A)

Grade

Connect the Cable to the Outdoor Unit

Page 22

22 Room Air Conditioner

Installation

Checking the Drainage Form the Piping

1. To remove the front panel from the indoor unit.

• Set the air direction louvers up-and-down to the position(horizontally) by hand.

• Remove the securing screws that retain the front panel. Pull the lower left and right sides of the grille toward you and lift it off.

2. To check the drainage.

• Pour a glass of water on the evaporator.

• Ensure the water flows through the drain hose of

the indoor unit without any leakage and goes out the drain exit.

3. Drain piping

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

• Do not make drain piping.

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

• 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.

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

• Tape the piping, drain hose and connecting cable

from down to up.

• Secure the tapped piping along the exterior wall

using saddle or equivalent.

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

• Tape the piping and connecting cable from down

to up.

• Secure the taped piping along the exterior wall.

Form a trap to prevent water entering the room.

• Fix the piping onto the wall by saddle or equiva-

lent.

Pull the right and the left side.

Taping

Drain hose

Pipings

Connecting cable

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

Seal small openings around pipings with a gum type sealer.

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

Trap

Downward slope

Do not raise

Accumulated drain water

Tip of drain hose dipped in water

Air

Waving

Water leakage

Ditch

Less than 50mm gap

Water leakage

Page 23

Service Manual 23

Installation

Test Running

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

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

Prepare remote control

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

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

3. Reattach the cover by

pushing it back into position.

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

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

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 antivibration bushing.

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 (Heating).

4. For reference; the gas side pressure of optimum condition is as below.(Cooling)

If the actual pressure is higher than shown, the system is most likely over-charged, and charge should be removed. If the actual pressure are lower than shown, the system is most likely undercharged, and charge should be added.

The air conditioner is now ready for use.

NOTICE

Bolt

Tubing connection

Discharge temperature

Discharge air

Intake temperature

R-22 35°C (95°F) 4~5kg/cm2G(56.8~71.0 P.S.I.G.)

R-410A 35°C (95°F) 8.5~9.5kg/cm

G(120~135 P.S.I.G.)

Outside ambient

TEMP.

Refrigerant

The pressure of the gas side

service valve.

This is performed when the unit is to be relocated or the refrigerant circuit is serviced.

Pump Down means collecting all refrigerant in the outdoor unit without loss in refrigerant gas.

CAUTION:

Be sure to perform Pump Down procedure with the unit cooling mode.

Pump Down Procedure

1. Connect a low-pressure gauge manifold hose to the charge port on the gas side service valve.

2. Open the gas side service valve halfway and purge the air from the manifold hose using the refrigerant gas.

3. Close the liquid side service valve(all the way in).

4. Turn on the unit's operating switch and start the cooling operation.

5. When the low-pressure gauge reading becomes 1 to 0.5kg/cm2 G(14.2 to 7.1 P.S.I.G.), fully close the gas side valve stem and then quickly turn off the unit. At that time, Pump Down has been completed and all refrigerant gas will have been collected in the outdoor unit.

PUMP DOWN

Page 24

24 Room Air Conditioner

Operation

Function of Controls

Operation

• DISPLAY

1) C/O Model 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)

Timer Indicator

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

Comp. Running Incidator

• While in appliance operation, ON while in outdoor unit compressor running, OFF while in compressor off.

2) H/P Model 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)

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 below the setting temp, the compressor and the outdoor fan stop.

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

Compressor ON Temp ➲ Setting Temp+0.5°C Compressor OFF Temp ➲ Setting Temp-0.5°C

• While in compressor running, operating with the airflow speed set by the remote control. While in compressor not running, operating with the low airflow speed regardless of the setting.

■ Healthy Dehumidification 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 ≤ Intake Air Temp ➲ 25°C 24°C ≤ Intake Intake Air Temp<26°C ➲ Intake Air Temp-1°C 18°C ≤ Intake Intake Air Temp<24°C ➲ Intake Air Temp-0.5°C Intake Air Temp<18°C ➲ 18°C

Page 25

Service Manual 25

Operation

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

• 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 Compressor OFF Temp. ➲ Setting Temp-0.5°C

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

■ Heating Mode Operation

• When the intake air temp reaches +3°…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

• While in compressor on, the indoor fan is off when the indoor pipe temp. is below 20°C, when above 28°C , it

operates with the low or setting airflow speed. When the indoor pipe temp is between 20°C and 28°C, it operates with Super-Low(while in sleep mode, with the medium airflow speed).

• While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C, when above 35°C , it

operates with the low airflow speed.

• If overloaded while in heating mode operation, in order to prevent the compressor from OLP operation, the

outdoor fan is turned on/off according to the indoor pipe temp.

• While in defrost control, both of the indoor and outdoor fans are turned off.

■ Defrost Control

• While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing, reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit.

• After 40 min heating mode operation, at 4 min interval, whether to carry out defrost control or not and the time of defrost control are determined according to the following conditions.

1) While in heating mode operation, the maximum of the indoor pipe temperature is measured and it is com-

pared with the present indoor pipe temperature to get the difference of the indoor pipe temperatures (=the maximum temperature of indoor pipe ? the present temperature of indoor pipe), according to which, whether to carry out defrost control or not is determined.

2) According to the need of defrost control shown above and the elapsed time of heating mode operation at that

moment, the defrost control time is determined.

3) When the determined time of defrost control is below 7 min, heating mode operation continues without carry-

ing out defrost control. According to the procedure stated above, the determination is made again. When the defrost control time is 7 min or longer, defrost control is then carried out.

• While in defrost control, the minimum temp of the indoor pipe is measured and it is compared with the present temp of the indoor pipe to get the difference of the indoor pipe temperatures (=the present temperature of the indoor pipe ? the minimum temperature of the indoor pipe). When the difference is 5°C or higher, defrost control is completed and heating mode operation is carried out.

• While in defrost control, if the defrost time determined before the start of defrost control is completed, defrost control stops and heating mode operation is carried out regardless of the above condition.

• When the indoor pipe temp is 42°C or above, defrost control is not carried out even if the condition is one of the defrost conditions above.

• While in defrost control, the compressor is on and the indoor fan, the outdoor fan, and the 4 way valve are off.

Page 26

26 Room Air Conditioner

Operation

■ Airflow Speed Selection

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

■ 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. After another 30 min elapse, it increases by 1°C 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 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 (C/O Model)

• If the Jet Cool key is input at any operation mode while in appliance operation, the Jet Cool mode operates.

• 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

• 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.

■ Jet Cool Mode Operation (H/P Model)

• 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.

• 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.

■ Forced Operation

• Operation procedures when the remote control can't be used.

• The operation will be started if the power button is pressed.

• If you want to stop operation, re-press the button.

• While in forced operation, the key input by the remote control has no effect and the buzzer sounds 10 times to

indicate the forced operation.

Heat pump Model

Cooling Model

Room Temp. ≥ 24°C21°C ≤Room Temp. < 24°C Room Temp. < 21°C

Operating mode Cooling Cooling Healthy Dehumidification Heating

Indoor FAN Speed

High High High High

Setting Temperature

22°C22°C23°C24°C

Page 27

Service Manual 27

Operation

■ Test operation

•

During the TEST OPERATION, the unit operates in cooling mode at high speed fan, regardless of room temperature and resets in 18±1 minutes.

•

During test operation, if remote controller signal is received, the unit operates as remote controller sets. If you want to use this operation, open the front panel upward and Press the power button let it be pressed for about 3 seconds.

•

If you want to stop the operation, re-press the button.

■ Auto restart

•

In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate procedures automatically to the previous operating conditions.

■ Protection of the evaporator pipe from frosting

• If the indoor pipe temp is below 0°C in 7 min. after the compressor operates without any pause while in cooling cycle operation mode, the compressor and the outdoor fan are turned off in order to protect the indoor evaporator pipe from frosting.

• When the indoor pipe temp is 7°C or higher after 3 min. pause of the compressor, the compressor and the outdoor fan is turned on according to the condition of the room temperature.

■ 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.

• When a key is input by the remote control while the slide switch on the main unit of the appliance is on the

forced operation position, the error sound "beep-beep-beep-beep-beep-" is made 10 times to indicate that the remote control signal cannot be received.

Page 28

28 Room Air Conditioner

Self-diagnosis Function

Operation

Display Function

1. Heating Model 2. Cooling Model

• Cooling, Soft Dry, Fan, Heating • Cooling, Soft Dry, Fan

• Timer Mode • Timer Mode

• Hot-start, Deice

Operation Indicator

Timer Indicator

Indoor Unit on Indicator Indoor Unit on Indicator

Deicer Indicator

Operation Indicator

Timer Indicator

Compressor on Indicator

OUT

DOOR

3sec 3sec 3sec

(once)

Error

Code

Error Display LED

(Indoor body operation LED)

Error contents

• Indoor room temperature thermistor open/short

• Indoor pipe temperature thermistor open/short.

• Indoor Thermistor assembly check

SVC check point

Page 29

Service Manual 29

Remote Control Operations

The remote control transmits the signals to the system.

Operation

Page 30

30 Room Air Conditioner

Disassembly

Indoor Unit

Warning :

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.

Display P.C.B Conductor

Step Motor Conductor

Earth Conductor

Motor Conductor

Sensor Conductor

Earth Conductor

Page 31

Service Manual 31

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).

Caution label

CAUTION:

When repair, do not damage

the Caution label.

Page 32

32 Room Air Conditioner

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

Page 33

Service Manual 33

Schematic Diagram

R09H

C104S

Q03T

A104S

Q01T

C104S

Q02T

CN-TELE

C01D

C01T

100uF/25V

0.001uF 1N4148

D01T

A104S

Q04T

50V

C06H

0.1uF/50V

R01T

0.001uF 50V

C02T

CST-3.58M

OSC02B

ZD02H~ZD03H

5.1V, 1/2W

4.7K

R02A

R03A

100

10uF

50V

C01A

RST

R01A

KIA7036P

IC01A

DSOQ2Q3Q0DE

EST

121314

VSSD0NC

100K

VREF

R01X

58964

0.1uF/50V

C02H

RY-HOOK

ZNR01

R19H

BSP351L

R15H

10K

R18H

2.7 1/2W

C05H

100V

0.01uF

G6A-234P,5V

HR93F,5V

R12H

LM358

OP-AMP

ZD04H~ZD05H

CN-PHONE

3.9V, 1/2W

1uF DC250V

C01H

ZD05H

ZD04H

R01H

6.2K/1W

RST

100K

R07H

4.7K

R03H

7.5K

C03H

22uF

50V

R14H

R13H

750

270

ZD02H

C08H

50V

0.1uF

0.15uF

63V

C11H

ZD03H

R05H

Q03M

2222A

R06H

63V

Q01M

C3198Y

R01M

4.7K

C09H

1uF

1N4004

D01M

100K

R16H

TRANS

1/4W

6.2K

R02H

ZD01H

1.5KE56A

1N4004

D01H~D04H

KTC2016

PC01H

R04H

TLP621BL

Q02M

RA3

0.1uF

C02X

OSC215OSC1

VSS

MCLR3T0CLK

RB4

RB3

RB0

RB5

RB6

RB2

RB1

RB7

VDD

OP2

10K

DSO

IC-DTMF

(ST9170)

HT9170B

VDD

50V

51K

R17H

R01B

Q0Q3Q2

50V

CST-4.00MGW

OSC01B

C01X

0.01uF

16V

MICOM

RA1

RA0

RA2

PIC16C54CR

C04H

1uF

R08H

OP1

10K

S/W(FORCE)

Operation

Defrost

Timer

Sleep

20 19

28 27 26

30 29

53 54 55

51 52

DISPLAY

R02E,20

UPD780023AGC-C

ZBF503D

ZD02D

VOLTAGE GND

BZX55C11

745

HVB

LED1

LED2

LED3

LED4

C01A

RECEIVER

104

Vout

GND

Vcc

R02G 220

R03G 220

R04G 220

R01G 220

AC PART

25V

10V SD

R02D

DC LOW

1/6W

20K

S78DL05L 1W

103

C08D

220

C09D

7805

IC04D

25V

103

C07D

12V

25V SD

C06D

330

IC01G

KID65004AF

HVB OUT

12V

322

CN-CONT

CN-12V

CN-HVB

Option

R11H~R14H

20K 2012

receiver

6 66

251

10V

C02L

220uF SD

R11H

OJ1H

OJ2H

OJ3H

EEPROM

Vcc

SCL

SDA

123

A14A2

CAT24WC01J

R14H

R13H

R12H

20K

R01P

2012

R02P

20K

2012

OJ4H

20K

R02F

Vss0

Vdd0

C04C

103

Ad1dV

NEC

TERMINAL BOARD

STO2D-200

SD01D

TNY266P

DC HIGH

VOLTAGE GND

IC02D

DC HIGH

VOLTAGE GND

TLP421(V4 BL)

C05D

472M

104

50V

C02D

D07D

UG2D

470/35V/SD

C03D

681

RY-4WAY

1/6W

R03D

C04D

CN-ACDC

CN-ACDC2

INT

12V

SMPS

RY-FAN

RY-COMP

4.7uF

VOLTAGE GND

TLP421(V4 BL)

450V/SD

IC01D

DC LOW

IC03D

LL4148

D08D

VOLTAGE GND

DC HIGH

1/4W

300K

R06D

NTC SCK-102

C01D

INT

INDOOR FAN12V

12V

R05D

1/4W

300K

3216

27k

1/6W

R04D

D05D

1N4007

IN4007

D01C

D01A

IN4007

R01E

OR1H

OR5H

Med

10nH

OR6H OR3H

O/L

OR2H

OR4H

Low

C02C

220uF

10V/SD

R21H

INT

4WAY

FAN

COMP

R22H

R25H

R26H

R24H

R23H

R21H~R26H

12.1K, 1%

RESET

AVdd

AVref

ssV

C03C

103

INT1X1Vss1

INT0

CSTS0800MG03-T2

CRTL8.00MSOT

OSC01B

R01B

Q01C

2SC5343

KTC3198-Y

6.2K

12.1K

INDOOR FAN

12V

R05H

10K

2 2

3.6V

C01A

50V

0.01

R02A,20K

R04H

R02H

KIA7036P

S7136

IC01A

680pF/50V

C01L

R01L 5.1K

R02L,1K

R07D

56K

R06D

12K

BZ01E

receiver

PKM13EPY-4002

INT

CN-TH

SM1L43

TRAICS

RY-FAN

250V/T2A

G5N-1A(G5NB-1A)

RY-4WAY

G5N-1A(G5NB-1A)

TVR10561

METAL FILM

47nM/275V/435D

100nM/275V/436D

1/4W

560

R04J

INDOOR FAN

IN4007

D01D

IN4007

D01B

C02J

12V

IC01J

TR01J

TLP762JF

15mH/1A

NF01J

C01J

R02J

100,1/2W

FUSE

ZNR01J

R03J

680

1/2W

RY-COMP

G4A-1A-E-LG

CN-TAB1

120, 1/2W

RY-COMP

100nF/275V/436D

METAL FILM

C03J

ZNR02J

TVR10561

12V

R01J

231

CN-MOTOR

12V

RY-COMP

SH-CAPACITOR

FAN

MOTOR

INDOOR

PIPE-TH

ROOM-TH

123

3.6V

1(L)

AC220~240V

50/60Hz

COMPRESSOR

524

2(N)

OUTDOOR

FAN MOTOR

4-WAY

(UP/DOWN)

STEPPING MOTOR

KID65004AF

DC PART

CN-U/D

YLORRD

324

COMP

HVB OUT

12V

INDOOR FAN

IC01M

STEPPING MOTOR

(LEFT/RIGHT)

Option

Q03T

C104S

Q02T

A104S

4WAY

121314 1011

FAN

KID65004AF

IC02M

CN-L/R

545

12V

C03T

102

R01T

102

A104S

Q04T

Q01T

C104S

C02T

104

1N4148

D01T

CN-TEL

C01T

TELE (OPTION)

Electric Control Device

• Heat Pump Model(LED TYPE)

Page 34

34 Room Air Conditioner

Schematic Diagram

HVB TYPE(PLASMA)

Page 35

Service Manual 35

Wiring Diagram

Schematic Diagram

Indoor Unit

Outdoor Unit

MOTOR

RD BK

BK BK BK BK

POWER

GN/YL

BR(BK/Plained)

BL(WH/Ribbed)

SH-CAPA

T/BOARD

T-BLOCK

RY-4WAY

RY-FAN

CN-MOTOR

THERMISTOR

STEP

MOTOR

CN-ACDC1

CN-ACDC2

CN-THCN-U/DCN-L/RCN-HVBCN-12V

CN-DISP

DISPLAY PWB ASM.

P/No : 3854A20238H

CN-CONT

TRIAC

AC PWB ASM. DC PWB ASM.

CN-TAB

RY-COMP

TO OUTDOOR UNIT

1(L)

GN/YL

2(N)

3 4

FUSE

250V T2A

STEP

MOTOR

H.V.

ASM.

S/W1

S/W2

AIR CLEAN (PLASMA)

Page 36

36 Room Air Conditioner

Schematic Diagram

Components Location

MAIN P.W.B ASSEMBLY (AC PART)

• HEAT PUMP MODEL

MAIN P.W.B ASSEMBLY (DC PART)

• TOP VIEW • BOTTOM VIEW

Page 37

Service Manual 37

Schematic Diagram

DISPLAY ASSEMBLY

– 6871A20476(6871A90476)

TOP VIEW

BOTTOM VIEW

Page 38

38 Room Air Conditioner

Troubleshooting Guide

INDOOR UNIT OUTDOOR UNIT

HEAT EXCHANGE (EVAPORATOR)

HEAT EXCHANGE (CONDENSER)

COMPRESSOR

ACCUMU LATOR

GAS SIDE

3-WAY VALVE

LIQUID SIDE

3-WAY VALVE

CAPILLARY TUBE

CHECK VALVE

(Heating Model only)

COOLING HEATING

REVERSING VALVE (Heating Model Only)

(1) Cooling Only Models

Refrigeration Cycle Diagram

(2) Cooling & Heating Models

Page 39

Service Manual 39

Troubleshooting Guide

CAUTION:* Capicity is based on standard length and maximum allowance length is the basis of reliability. * Oil trap should be installed per 5~7 meters.

Outdoor unit

Indoor unit

In case more than 5m

7k~14k

3/8"(Ø9.52) 1/4"(Ø6.35) 4 or 7.5 7 15 20 1/2"(Ø12.7) 1/4"(Ø6.35) 4 or 7.5 7 15 20 1/2"(Ø12.7) 1/4"(Ø6.35) 4 or 7.5 15 30 20

18k~28k 5/8"(Ø15.88) 1/4"(Ø6.35) 4 or 7.5 15 30 20

5/8"(Ø15.88) 3/8"(Ø9.52) 4 or 7.5 15 30 30

30k~38k

5/8"(Ø15.88) 3/8"(Ø9.52) 7.5 15 30 30 3/4"(Ø19.05) 3/8"(Ø9.52) 7.5 15 30 50

Pipe Size

Capacity

(Btu/h)

GAS LIQUID

Additional

Refrigerant

(g/m)

Max.

Length

A (m)

Max.

Elevation

B (m)

Standard

Length

(m)

Pipe Length and the Elevation

Oil trap

Indoor unit

Outdoor unit

Page 40

40 Room Air Conditioner

Troubleshooting Guide

2-way, 3-way Valve

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

Shaft position Shaft position Service port

Closed Closed Closed

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

Open Closed Open

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

vacumm pump)

Open Open Closed

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

Closed Open Open

(clockwise) (counter-clockwise) (connected manifold

gauge)

Open Open Open

(with charging

cylinder)

Open Open Open

(with charging

cylinder)

Open Open

Works

Shipping

Air purging (Installation)

Operation

Pumping down (Transfering)

Evacuation (Servicing)

Gas charging (Servicing)

Pressure check (Servicing)

Gas releasing (Servicing)

Valve cap

Open position Closed position

Service port

Service port cap

To outdoor unit

Flare nut

To piping connection

To outdoor unit

Hexagonal wrench (4mm)

Open position Closed position

To piping connection

Flare nut

Open

(with charging cylinder)

Open

(with charging cylinder)

Page 41

Service Manual 41

Troubleshooting Guide

• Procedure

(1) Confirm that both the 2-way and 3-way 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 charge set to the service port of the 3-way valve.

– Connect the charge hose with the push pin to

the service port.

(4) Air purging of the charge hose.

– Open the low-pressure valve on the charge set

slightly to air purge from the charge hose.

(5) Set the 2-way 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 3-way valve to the closed

position.

– Do this quickly so that the gauge ends up indi-

cating 3 to 5kg/cm2g.

(8) Disconnect the charge set, and mount the 2-

way and 3-way valve’s stem nuts and the service port nut.

– Use torque wrench to tighten the service port

nut to a torque of 1.8 kg.m.

– Be sure to check for gas leakage.

Closed

Purge the air

Outdoor unit

Indoor unit

Liquid side

Gas side

Open

2-Way valve

3-Way valve

Pumping Down

CAUTION: Do not use the existing charge set for R-22.

It is necessary to use new charge set for R410A. The pressure of R-410A is 1.6 times higher than that of R-22. Thus, the high pressure side gauge of charge set should be used higher pressure gauge of 50kg/cm2range.

Page 42

42 Room Air Conditioner

Troubleshooting Guide

Balance Refrigerant of the 3-way Valve

(Gas leakage)

• Procedure

(1) Confirm that both the 2-way and 3-way valves

are set to the back seat.

(2) Connect the charge set to the 3-way valve’s

port.

– Leave the valve on the charge set closed. – Connect the charge hose to the service port.

(3) Open the valve (Lo side) on the charge set and

discharge the refrigerant until the gauge indicates 0 kg/cm2G.

– If there is no air in the refrigerant cycle (the

pressure when the air conditioner is not running is higher than 1 kg/cm2G), discharge the refrigerant until the gauge indicates 0.5 to 1 kg/cm

G. if this is the case, it will not be neces-

sary to apply a evacuatin.

– Discharge the refrigerant gradually; if it is dis-

charged too suddenly, the refrigeration oil will also be discharged.

Open

3-Way valve

Gas side

CLOSEOPEN

Outdoor unit

Liquid side

Indoor unit

Page 43

Service Manual 43

Troubleshooting Guide

Evacuation

(All amount of refrigerant leaked)

• Procedure

(1) Connect the vacuum pump to the center hose

of charge set center hose

(2) Evacuation for approximately one hour.

– Confirm that the gauge needle has moved

toward -76 cmHg (vacuum of 4 mmHg or less).

(3) Close the valve (Lo side) on the charge set,

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

(4) Disconnect the charge hose from the vacuum

pump.

– Vacuum pump oil.

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

Open

Vacuum pump

3-Way valve

Outdoor unit

Liquid side

Indoor unit

Gas side

3-Way valve

OPEN

CAUTION:

Use vacuum pump equipped with check value applied to be prevented from flowing backward.

Page 44

44 Room Air Conditioner

Troubleshooting Guide

Gas Charging

(After Evacuation)

• Procedure

(1) Connect the charge hose to the charging

cylinder.

– Connect the charge hose which you dis-con-

nected 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 valve (Lo side on the charge set and

charge the system with liquid refrigerant.

– If the system can not be charged with the spec-

ified 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 3-way 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.

– Be sure to check for gas leakage.

CAUTION:

This unit is charged with R-410A. Pay attention not to charge R-22.

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.

Indoor unit

Check valve

Charging cylinder

(1)

OPEN

Liquid side

Gas side

3-Way

Open

valve

Open

3-Way valve

Outdoor unit

Page 45

Service Manual 45

Troubleshooting Guide

Additional gas charging

(Gas leakage)

• When refrigerant is insufficient by leakage, recharge the unit with the refrigerant up to normal operating suction pressure.

• Use the graph or the equation below to get operating suction pressure according to indoor and outdoor temperature. Suction pressure was measured at 3-way valve service port after operating the unit for 10 minutes.

The method of using graph

- Find outdoor temperature.

- Find indoor temperature onto the curve of outdoor temperature.

- Read suction pressure at the axis of ordinates.

The method of using equation

-. Calculate suction pressure after putting indoor and outdoor temperature into the equation.

(At operating the Unit for 10 minutes)

Suction Pressure

(Kg/cm

.g)

Outdoor Temp.

(˚C)

Indoor Temp. (˚C)

12 11 10

9 8 7 6 5

5 10152025303540

50˚C

40˚C

30˚C

20˚C 10˚C

0˚C

P = 3 + 0.0123 x Tout

1.5

+ 0.8 x Tin

0.5

Where, P : Suction Pressure(kg/cm

g) Tout : Outdoor Temperature(˚C) Tin : Indoor Temperature(˚C)

Operating Suction Pressure

(According to Indoor & Outdoor Temperature)

Page 46

46 Room Air Conditioner

Troubleshooting Guide

Trouble analysis

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

Temp. Difference

Temp. difference : approx. 0°C Current : less than 80% of

rated current

Temp. difference : approx. 8°C Current : less than 80% of

rated current

Temp. difference : less than 8°C Current : over the reated

current

Temp. difference : over 8°C

Operating Current

• All amount of refrigerant leaked out. Check refrigeration cycle.

• Refrigerant leakege

Clog of refrigeration cycle Defective compressor

• Excessive amount of refrigerant

• Normal

Temperature difference between intake and discharge air depends on room air humidity. When the room air humidity is relativery 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.

1. The suction pressure is usually 8.5~9.5 kg/cm2G(Cooling) at normal condition.

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

NOTICE

Suction pressure Temperature

(Compared with (Compared with Cause of Trouble Description

the normal value) the normal valve)

Defective compressor Current is low. Defective 4-way reverse valve

Excessive amount of High pressure does not quickly

Normal refrigerant rise at the beginning of

operation.

Insufficient amount of Current is low.

Lower Higher refrigerant (Leakage)

Clogging Current is low.

High

Higher

Cycle Parts

Page 47

Service Manual 47

Troubleshooting Guide

Electronic Parts

Product does not operate at all.

(* Refer to Electronic Control Device drawing and Schematic diagram.)

Turn off Main Power

Turn on Main Power

Does "beeping" sound is made from the Indoor Unit?

Primarily, the operating condition of Micom is OK.

Check the voltage of power(About AC 220V, 60Hz)

(About AC 220/240V, 50Hz)

• Main power's voltage

• Voltage applied to the unit

• Connecting method of Indoor/Outdoor connecting

cable

• Check PWB Assembly

- Fuse

- Pattern damage

- Varistor(ZNR01J)

Check the connection housing for contacting

• Connector related to CN-TAB1, RY-COMP NO.3

• Connector related to CN-MOTOR

• Connector contacting of Outdoor Fan/Compressor

• Display PCB Assembly Check

Check each load(Indoor/Outdoor Fan Motor, Compressor, Stepping Motor) and contacting condition of related connector

Main PCB Board Operation Check

Items

• SMPS Transformer (Indoor unit)

- Input Voltage

- Output Voltage(ZD02D)

• IC04D(7805) Output (Indoor/Outdoor unit)

• IC01A(KIA7036, Reset IC) X01(8MHz)

• Replace Trans

• Replace IC04D

• Replace faulty parts

- About AC220V/240V±10% - Check the power voltage

- About DC12V

• DC +5V

• Voltage of Micom No. 2,

(DC +4.5V over) and Soldering condition.

Content Remedy

YES

(After 10 seconds)

Page 48

48 Room Air Conditioner

Troubleshooting Guide

The product is not operate with the remote controller.

Turn on Main Power

While the compressor has been stopped, the compressor does not

operate owing to the delaying function for 3 minutes after stopped.

Caused by other parts except the remote control

Cause by the remote control

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

Check the contact of CN-DISP1 connector.

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 by force.)

Check Display PCB Assembly

- Voltage between CN DISP1 - : DC +5V

Check the connecting circuit between the remote controller MICOM (No. ) - R17(2Ω) - IR LED - TR - R16(2.2KΩ).

Check point

• Check the connecting circuit between CN-DIS1 R01L(5.1kΩ) - C01L(680pF) - MICOM PIN

• Check Receiver Assembly

Page 49

Service Manual 49

Troubleshooting Guide

Compressor/Outdoor Fan are unable to drive.

Turn on Main Power

Operate "Cooling Mode( )" by setting the desired temperature of the remote controller is less than one of the indoor temperature by 1°C at least.

When in Air Circulation Mode, Compressor/Outdoor Fan is stopped.

Check the sensor for indoor temperature is attached as close as to be effected by the temperature of Heat Exchanger(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 RY-FAN.

• Check the indoor temperature sensor is disconnected or not(About 10k Ω/ at 25°C).

Turn off Main Power

• Check the electrical wiring diagram of outdoor side.

• Check the abnormal condition for the component of

Compressor/Outdoor Fan Motor.

• Check the "open" or "short" of conmecting wires between indoor and outdoor.

Check Relay(RY - COMP) for driving compressor.

• When the power(About AC220V/240V) is applied to the connecting wire terminal support transferred to compressor, PWB Assembly is normal.

• Check the circuit related to the relay.

Check point COMP ON COMP OFF

Between Micom(No.

DC5V DC0V

62) and GND

Between IC01M(No. 14) Below DC 1V

About DC12V

and GND (app)

Page 50

50 Room Air Conditioner

Troubleshooting Guide

Check the TRIAC high speed operation by remote control.

(The Indoor Fan Motor is connected)

Turn off Main power

Check the connection of CN-MOTOR

Check the Fan Motor

Check the Fuse(AC250V/T2A)

Turn ON Main Power

Check the related circuit of indoor Fan Motor.

• The pin NO 63 of Micom, and the part for driving TRIAC(the input and output signal of IC01M, PIN NO 7, 10)

• Check the pattern

• Check the TRIAC

- TRIAC Open: Indoor Fan Motor never operate

- TRIAC short: Indoor Fan Motor always operates in case of ON or OFF.

When indoor Fan does not operate.

The voltage of PIN NO 1(orange) and 3(yellow) of CN-MOTOR.

About AC 180V over About AC 50V over

TRIAC is not damaged TRIAC Check

Page 51

Service Manual 51

Troubleshooting Guide

• 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-U/D Connector

• Check the soldering condition(on PWB) of CN-U/D Connector

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

When Vertical Louver does not operate.

Check the operating circuit of the Vertical Louver

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

GND.

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

- Between , , and of MICOM

- Between , , and of IC01M

60 61 62 63

Page 52

52 Room Air Conditioner

Troubleshooting Guide

When Heating does not operate

Operate “Heating Mode( )” by setting the desired temperature of the remote control is higher than one of the indoor temperature by 2°C at least.

In heating Mode, the indoor fan operates in case the pipe temperature is higher than 28°C.

Check the connector of intake and pipe sensor(thermistors)

• Check the related circuit of RY-4WAY

• Check the indoor room temperature is disconnected or not (about 10KΩ/at 25°C).

• Check the indoor pipe temperature is disconnected or not (about

5KΩ/at 25°C).

Turn ON Main Power

Check the DC voltage on the PWB ASSEMBLY

• The details of check are as followings

Check point

Between Micom

(NO.59) and GND

Between IC01M

(NO.11) and GND

Comp ON

DC 5V

Below DC 1V

Comp OFF

DC 0V

About DC

12V

Check point

Between Micom

(NO.51) and GND

Between IC02M

(NO.11) and GND

4 way ON

DC 5V

Below DC 1V

4 way OFF

DC 0V

About DC 12V

Check point

Between Micom

(NO.53) and GND

Between IC02M

(NO.12) and GND

Fan ON

DC 5V

Below DC 1V

Fan OFF

DC 0V

About DC 12V

• Comp Relay.

• 4 way Relay

• Outdoor fan Relay

Page 53

Service Manual 53

Troubleshooting Guide

Turn off Main Power

• Check the electrical wiring diagram of outdoor side.

• Check the abnormal condition for the component of

Compressor/Outdoor Fan Motor, 4 way.

• Check the "open" or "short" of connecting wires between indoor and outdoor.

Page 54

54 Room Air Conditioner

Exploded View

346810

146811

354212

131410

359011

342800

159901

268712

159830

135311

135312

267110

249951

733010

152313

135314

152302

35211B

135516

352150

266090

268714-1

268714-2

W6640

263230

264110

Indoor Unit

Page 55

Service Manual 55

Exploded View

554031

437212

435511

W0CZZ

552202

567502

552116

552201

554160

561410

552111

550140

552203-1

552203-2

430410

447910

649950

552102-2

552102-1

437210

435301

559010

546810

Outdoor Unit

Page 56

56 Room Air Conditioner

Replacement Parts List

Parts List (Indoor)

LOCATION

DESCRIPTION

PART No.

REMARKS

No.

131410 CHASSIS ASSEMBLY 3141A20006A 3141A20006A 3141A20006A R 135311 GRILLE ASSEMBLY,DISCHARGE(INDOOR) 3531A10232T 3531A10232T 3531A10234P R 135312 GRILLE ASSEMBLY,FRONT(INDOOR) 3531A20225B 3531A20225B 3531A10174Z R 135314 GRILLE ASSEMBLY,INLET SUB 3531A20226B 3531A20226B 3531A10273A R 135516 COVER ASSEMBLY,MOTOR 3551A20050H 3551A20050H 3551A20050A R 146811 MOTOR ASSEMBLY,STEP 4681A20055A 4681A20055A 4681A20055A R 152302 FILTER(MECH),A/C 5230A10005C 5230A10005C 5230A20014B R 152313 FILTER ASSEMBLY,DEODORIZER - - - R 159830 AIR CLEANER ASSEMBLY - - - R 159901 VANE,HORIZONTAL 5990A10005A 5990A10005A 5990A20007A R 249951 CONTROL BOX ASSEMBLY,INDOOR 4995A90257R 4995A90257B 4995A90258B R 263230 THERMISTOR ASSEMBLY 6323A20004K 6323A20004K 6323A20004K R 264110 POWER CORD ASSEMBLY 6411A20026D 6411A20026D 6411A20026A R 266090 H.V ASSEMBLY - - - R 267110 REMOTE CONTROLLER ASSEMBLY 6711A90023C 6711A90023C 6711A90023C R

268712 PWB(PCB) ASSEMBLY,DISPLAY 6871A90476C 6871A90476C 6871A90476C R 268714-1 PWB(PCB) ASSEMBLY,MAIN(AC) 6871A20272R 6871A20272A 6871A20272A R 268714-2 PWB(PCB) ASSEMBLY,MAIN(DC) 6871A20310B 6871A20310G 6871A20309F R

342800 BEARING 4280A20004B 4280A20004B 4280A20004B R

346810 MOTOR ASSEMBLY,INDOOR 4681A20062N 4681A20062L 4681A20048R R

35211B TUBE ASSEMBLY,TUBING 5211A21046R 5211A21046R 5211A21046S R

352150 HOSE ASSEMBLY,DRAIN 5251AR2575F 5251AR2575F 5251AR2575F R

354212 EVAPORATOR ASSEMBLY,FINAL 5421A10040A 5421A10040A 5421A20087X R

359011 FAN ASSEMBLY,CROSS FLOW 5901A20007E 5901A20007E 5901A20007D R

733010 PLATE ASSEMBLY,INSTALL 3301A10003A 3301A10003A 1H00843A R

W0CZZ CAPACITOR,DRAWING 3H01487A 3H01487A 3H01487A R

W6640 PWB(PCB) ASSEMBLY,MAIN(AC) 6871A20283A 6871A20283A 6871A20283A R

AS-H076QGA2 AS-H096QGA2 AS-H126RGA2

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

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

Page 57

Service Manual 57

Replacement Parts List

Parts List (Outdoor)

LOCATION

DESCRIPTION

PART No.

REMARKS

No.

430410 BASE ASSEMBLY,OUTDOOR 3041A20016A 3041A20016A 3041A20016A R 435511 COVER ASSY,CONTROL(OUTDOOR) 3551A30023Q 3551A30023Q 3551A30023Q R 437210 PANEL ASSEMBLY,FRONT(OUTDOOR) 3720A10171A 3720A10171A 3720A10171A R 437212 PANEL ASSY,REAR(OUTDOOR) 3720A10172A 3720A10172A 3720A10172A R 447910 BARRIER ASSY,OUTDOOR 4790A10025B 4790A10025B 4790A10025B R 546810 MOTOR ASSEMBLY,OUTDOOR 4681A20121A 4681A20121A 4681A20121A R

550140 ISOLATOR,COMP 4H00982E 4H00982E 4H00982E R 552102-1 TUBE,CAPILLARY BEND 5210A21238R 5210A21238M 5210A20897H R 552102-2 TUBE,CAPILLARY BEND - - 5424AR7208Q R

552111 TUBE ASSEMBLY,CAPILLARY 5211A21143C 5211A21143B 5211A30708A R

552116 TUBE ASSEMBLY,REVERSING 5211A20188T 5211A20188P 5211A20188R R

552201 VALVE,CHECK - - 5220AR7182A R

552202 VALVE,REVERSING 5220AR3228J 5220AR3228J 5220AR3228J R 552203-1 VALVE,SERVICE 2H02479P 2H02479P 2H02479P R 552203-2 VALVE,SERVICE 5220A20001Q 5220A20001Q 5220A20006F R

554031 CONDENSER ASSEMBLY,BENT 5403A20059B 5403A20059B 5403A20045Z R

554160 COMPRESSOR SET 2520UZBP2AA 2520UGAP2HB 2520UGHP2CA R

559010 FAN ASSEMBLY,PROPELLER 5900AR1266C 5900AR1266C 5900AR1266C R

561410 COIL ASSEMBLY,REVERSING VALVE 6141A20017A 6141A20017A 6141A20017A R

567502 O.L.P 6750U-L023A 6750U-L061A 6750U-L076A R

649950 CONTROL BOX ASSEMBLY,OUTDOOR 4995A10032B 4995A10032J 4995A10032K R

W0CZZ CAPACITOR,DRAWING 6120AR2194H 2H01451P 2H01451T R

435301 GRILLE,DISCHARGE 3530A10059G 3530A10059G 3530A10059G R

AS-H076QGA2 AS-H096QGA2 AS-H126RGA2

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

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

Page 58

58 Room Air Conditioner

Memo

Page 59

P/No.: 3828A20462A

January, 2004

Printed in Korea