LG AS-W306MMH0, AS-W306MMH1 Svc Manual

Room Air Conditioner

SVC MANUAL(Exploded View)

MODEL : AS-W306MMH0 AS-W306MMH1

CAUTION

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

Internal Use Only

http://biz.lgservice.com

- 2 -

LGE Internal Use Only

Air Conditioner Service Manual

TABLE OF CONTENTS

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

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

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

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

Installation.......................................................................................................................................14

Flaring work and connection of piping.........................................................................................16

Connecting the cable between indoor unit and outdoor unit.....................................................23

Checking the drainage and forming the pipings .........................................................................25

Air purging ......................................................................................................................................27

Test running ....................................................................................................................................29

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

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

Disassembly....................................................................................................................................40

Schematic Diagram ........................................................................................................................44

Troubleshooting Guide ..................................................................................................................48

Exploded View ................................................................................................................................76

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LGE Internal Use Only

LG Model Name

2003

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. 0~9 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

- 4 -

LGE Internal Use Only

LG Model Name

2004~

12 - 345678910

Code Type Code of Model Meaning

1 Producing Center, A~Z

L Chang_won R22 A Chang_won R410A C Chang_won R407C T China K Turkey R22 E Turkey R410A H Thailand

N India Z Brazil D Indonesia X Mexico V Vietnam S Out sourcing

Refrigerant

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

CHASSIS Look

D K

L G M N D P

Division Panel Type(Deluxe) Fighting 'Look'

(LG1) (LG2)-SEMI PANEL OEM1 OEM2 Panel Type(Deluxe) LG3

, 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. 0~9 LG Model De

* ARTCOOL COLOR

velopment Serial No.

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

S4/S5

S6 SQ SR

ST

Basic A Basic+4Way B Plasma Filter C Plasma Filter+4 Way D Tele+LCD E Tele+LCD+Nano plasma+4Way F NBF F+(A/changeove)+A/clean+Low A G NBF F+(A/changeove)+A/clean+4way+Low A H Tele+LED+4way I Internet J Plasma F+4Way+Oxy generator K NBF F+(A/changeove)+A/clean L NBF F+(A/changeove)+A/clean+4way M NBF F+(A/changeove)+A/clean+PTC N NBF F+(A/changeove)+Autoclean+4way+PTC P NBF F+(A/changeove)+A/clean+4way+Low A+PTC Q (Nano)Plasma+ION+A/Clean S 4way+(Nano)Plasma F+

Negative ION+Healthy dehumidification

+A/Clean T Nano Plasma F+4Way+(A/changeove)+A/clean+Oxy generator U 4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean+Oxy generator

V Dry contact W Wire remocon 8

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LGE Internal Use Only

Safety Precautions

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

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

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

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

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LGE Internal Use Only

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.

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LGE Internal Use Only

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 -

LGE Internal Use Only

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.

Safety Precautions

- 9 -

LGE Internal Use Only

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

Safety Precautions

- 10 -

LGE Internal Use Only

Dimensions

D

H

W

Installation Plate

W mm(inch) 1,259(49.6)

H mm(inch) 349(13.7)

D mm(inch) 205(8.1)

Model

Dimension

30k Btu Series

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

- 11 -

LGE Internal Use Only

Dimensions

L4

L3

H

L7L5L6

W

D

L1

L2

D

W

H

MODEL

DIM unit

W mm 870

H mm 1,060

D mm 320

L1 mm 360

L2 mm 20

L3 mm 1,040

L4 mm 20

L5 mm 550

L6 mm 160

L7 mm 165

Outdoor Unit

30k Btu Series

- 12 -

LGE Internal Use Only

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.

IN:20°C,Out: -10°C(Heater ON)

Btu/h.

IN:20°C,Out: -10°C(Heater OFF)

Btu/h.

Power Input Cooling W

Heating W Heating(-10°C,Heater ON)

W

Heating(-10°C,Heater OFF)

W

Running Current Cooling A

Heating A Heating(-10°C,Heater ON)

A

Heating(-10°C,Heater OFF)

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 m3/min(CFM)

Outdoor,Max m3/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)

3,016 2,594

10,294

8,000 6,879

27,297

9,350 8,041

31,910

2,670 2,296 9,113 9,500

8,169 32,415 10,223

8,792 34,890

-

2,800 3,710

-

12.5

16.3

-

12.5

16.3

2.46

9.75

2.20

8.73

2.86

2.56

1,220-240,50

97

21(742)

58(2,048)

3.156.62) 48 46 43 54

2,440

12:3*2.5

18:4*0.75

6.35(1/4)

15.88(5/8)

7.5(295)

32.5, 30(1.27, 1.18) 1,259*205*349

49.5*6.8*13.7

870*1,038*320

34.2*40.8*12.5

20(44.1)

80(176.4)

AS-W306MMH0

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LGE Internal Use Only

Product Specifications

Table-2

Buyer Models

Item Unit

Cooling Capacity Min W

kcal/h

Btu/h

Rating W

kcal/h

Btu/h

Max W

kcal/h

Btu/h

Heating Capacity Min W

kcal/h

Btu/h

Rating W

kcal/h

Btu/h

Max W

kcal/h

Btu/h

Power Input Cooling W

Heating W

Running Current Cooling A

Heating A

Starting Current Cooling A

Heating A

EER W/W

Btu/h.W COP W/W Power Supply Ø,V,Hz Air Circulation Indoor,Max m3/min (l/s)

Outdoor,Max m3/min (l/s) Moisture Removal l/h (pts/h) Noise Level Indoor,High dB(A)±3 (Sound Low dB(A)±3 Pressure,1m) Outdoor,Max dB(A)±3 Refrigerant (R410A) Charge g (oz) Power Cord P*mm

2

Connecting Cable P*mm

2

Connecting Tube Liquid Side mm (in) (Ø. Socket Flare) Gas Side mm (in)

Length,std m (in) Dimension Indoor mm (W*H*D) in.

Outdoor mm

in.

Net Weight Indoor kg (lbs)

Outdoor kg (lbs) Energy Labeling Capacity Cooling

Heating

Energy Consumption Cooling

Heating

Star Rating Cooling

Heating

Tool (IN/OUT)

3,016 2,594

10,294

7,510 6,457

25,624

9,350 8,041

31,910

2,670 2,296 9,113 9,500

8,168 32,414 10,223

8,792 34,890

2,840

4,140

12.5

17.6

12.5

17.6

2.64

9.02

2.29

1,220-240,50

21.0 (350) 58 (966)

3.1 (6.6)

48 43 54

2,100 (74.1)

3*2.5

4*0.75

6.35(1/4)

15.88((5/8)

7.5(295)

1259*205*349

49.5*6.8*13.7

1,038*870*320

34.2*40.8*12.5 20 (44.1)

80 (176.4)

7.51

9.50

2.84

4.14

2.5

1.0

SM+UE2

AS-W306MMH1

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LGE Internal Use Only

Installation

Selection of the Best Location

Piping Length and Elevation

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 30cm. The unit should be installed as high on the wall as possible, allowing a minimum of 12cm 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 sun-

light 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.

■ Rooftop Installations:

If the outdoor unit is installed on a roof structure, be sure to level the unit. Ensure the roof structure and anchoring method are adequate for the unit location. Consult local codes regarding rooftop mounting. If the outdoor unit is installed on root structures or walls, this may result in excessive noise and vibration, and maybe also classed as non serviceable installation.

More than 12cm

More than

30cm

More than

30cm

More than 2.3m

More than 10cm More than 10cm

More than 60cm

More than 70cm

In case more than 5m

• 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.

Outdoor unit

Indoor unit

A

B

A

Oil trap

Outdoor unit

Indoor unit

B

Install the indoor unit on the wall where the height from the floors more than 2.3 meters.

A minimum pipe run of 7.5 meters is required to minimise vibration & excessive noise.

30k 5/8" 1/4" 7.5 15 30 35

Pipe Size

Capacity

(Btu/h)

GAS LIQUID

Max.

length

A (m)

Additional

Refrigerant

(g/m)

Max.

Elevation

B (m)

Standard

Length

(m)

30k

- 15 -

LGE Internal Use Only

Installation

How to Fix Installation Plate Drill a Hole in the Wall

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.

5-7mm

(0.2~0.3")

Indoor

WALL

Outdoor

Installation Plate

Type "A" screw

Right rear piping

30k

Left rear piping

50mm

ø

70mm180mm

115mm

■ 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.

- 16 -

LGE Internal Use Only

Flaring work and connection of piping

Flaring work

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

Cut the pipes and the cable.

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

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

■ Cut the pipes a little longer than measured distance.

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

Burrs 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)

Copper

pipe

90°

Slanted Uneven Rough

Bar

Copper pipe

Clamp handle

Red arrow mark

Cone

Yoke

Handle

Bar

"A"

Pipe

Reamer

Point down

Flaring work

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

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

Check

■ Compare the flared work with figure below.

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

section and do flaring work again.

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

Flare nut

Copper tube

Inclined

Inside is shiny without scratches

Smooth all round

Even length

all round

Surface

damaged

Cracked Uneven

thickness

= Improper flaring =

- 17 -

LGE Internal Use Only

Flaring work and connection of piping

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

Connection of piping -- Indoor

1. Remove the 2 screws of right side panel.

2. Remove the front right side panel by the arrow.

■ The connector can be disconnected by pulling it while pressing the connector's hook.

■ Remove the 1 screw for fixing lower panel.

3. Remove the lower panel by the arrow.

■ Take care not to scratch the wall and mat to drop.

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

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.

Right side panel

Drain hose

Main PCB

Lower panel

For left rear piping

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.

- 18 -

LGE Internal Use Only

Flaring work and connection of piping

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 recommend-

ed.

4. Indoor unit installation

■ Hook the indoor unit onto the upper portion of the installation plate.(Engage the three hooks of the rear top and rear lower of the indoor unit with the upper edge and lower edge of the installation plate.) Ensure that the hooks are properly seated on the installation plate by moving it left and right.

NOTICE

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

■ Align the center of the pipings 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.

Connecting cable

Loop

Gas side piping

Liquid side piping

Drain hose

Installation plate

Three upper hooks

Installation plate

Indoor unit

Three lower hooks

Setting line

Indoor unit tubing Flare nut Pipings

Connection pipe

Flare nut

Indoor unit tubing

Torque wrench

Spanner (fixed)

Vinyl tape(narrow)

Adhesive

Drain pipe

Indoor unit drain hose

Pipe Size[Torque]

Capacity

(Btu/h)

GAS LIQUID

30k 5/8"[6.6kg.m] 3/8"[4.2kg.m]

- 19 -

LGE Internal Use Only

Flaring work and connection of piping

6. 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 pip-

ing housing section with vinyl tape.

■ Bundle the piping and drain hose together by

wrapping them with vinyl tape over the range within which they fit into the rear piping housing section.

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

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

3. Insert the connecting cable into the indoor unit.

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

■ Make a small loop with the cable for easy

connection later.

4. Tape the drain hose and the connecting cable.

• Connecting cable

Plastic bands

Insulation material

Drain hose

Drain pipe

Connecting cable

Vinyl tape(narrow)

Connection pipe

Connecting cable

Vinyl tape (wide)

Wrap with vinyl tape

Indoor unit pipe

Pipe

Wrap with vinyl tape

Drain hose

Pipe

Vinyl tape(wide)

For right rear piping

- 20 -

LGE Internal Use Only

Flaring work and connection of piping

5. Indoor unit installation

■ Hook the indoor unit onto the upper portion of the installation plate.(Engage the three hooks of the rear top and rear lower of the indoor unit with the upper edge and lower edge of the installation plate.) Ensure that the hooks are properly seated on the installation plate by moving it left and right.

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

■ Align the center of the pipings 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 piping housing section with vinyl tape.

Installation plate

Three upper hooks

Installation plate

Indoor unit

Three lower hooks

Setting line

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

Indoor unit tubing Flare nut Pipings

Torque wrench

Indoor unit tubing

Spanner (fixed)

Connection pipe

Flare nut

30k 5/8"[6.6kg.m] 3/8"[4.2kg.m]

Pipe Size[Torque]

Capacity

(Btu/h)

GAS LIQUID

- 21 -

LGE Internal Use Only

Flaring work and connection of piping

■ 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. Reinstall the parts to the original position.

■ Refix the lower panel to the original position.

■ Connect display conductor.

■ Refix the front right side panel to the original

position with the two screws.

Drain hose

Vinyl tape(narrow)

Pipe

Wrap with vinyl tape(wide)

Lower panel

Main PCB

Right side panel

Piping for passage through piping hole

- 22 -

LGE Internal Use Only

Flaring work and connection of piping

■ The drain hose can be connected at two different positions. Use the most convenient position and, if necessary, exchange the position of the drain pan, rubber cap and the drain hose.

➊ Drain pan

➋ Rubber cap

➌ Drain hose

➍ Exchange if necessary

■ Remove the drain hose.

■ Securely insert both the rubber plug and drain

hose into the drain outlets. Be sure the rubber the cap is securely fastened so that there is no leakage.

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.

1

2

3

4

Outdoor unit

Gas side piping (Bigger diameter)

Liquid side piping (Smaller diameter)

Torque wrench

30k 5/8"[6.6kg.m] 3/8"[4.2kg.m

Pipe Size[Torque]

Capacity

(Btu/h)

GAS LIQUID

Connection of the drain hose Connection of piping-Outdoor

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LGE Internal Use Only

Connect the cable to the Indoor unit.

Connecting the cable between indoor unit and outdoor unit

■

Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individually according to the outdoor unit connection.(Ensure that the color of the wires of the

outdoor unit and the terminal No. are the same as those of the indoor unit.)

2(N)Terminals on the indoor unit 1(L) 3

2(N)1(L) 3

Terminals on the outdoor unit

Color of Wires

POWER INPUT

Color of Wires

2(N)1(L)

RED

G/Y

BROWN

BLUE

RED

G/Y

BROWN

BLUE

Air

Conditioner

Main power source

The power cord connected to the outdoor unit should be complied with the following specifications (Rubber insulation, type H05RN-F approved by HAR or SAA).

The connecting cable connected to the indoor and outdoor unit should be complied with the following specifications (Rubber insulation, type H07RN-F approved by HAR or SAA).

8.5mm

20mm

GN/YL

NORMAL CROSS-SECTIONAL AREA 2.5mm

2

20mm

GN/YL

NORMAL CROSS-SECTIONAL AREA 0.75mm

2

7.5mm

30k

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

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LGE Internal Use Only

Connecting the cable between indoor unit and outdoor unit

Connect the cable to the outdoor unit

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 30A (30k, 32k), 35A (36k, 38k) between the power source and the unit. A disconnecting device to adequately disconnect all supply lines must be fitted.

Main terminal board

Control terminal board

Cover control

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 32))

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 nor-

mal function 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.

LG AS-W306MMH0, AS-W306MMH1 Svc Manual

Specifications and Main Features

Frequently Asked Questions

User Manual