LG AS-W1264GH0, AS-W0964GH0, AS-W1865DH0, AS-W091264DH0, AS-W1424DH0 User Manual

LG

Room Air Conditioner

SERVICE MANUAL

LG

MODELS: AS-W0964DH0

AS-W1264DH0
AS-W1865DH0
AS-W0964GH0
AS-W1264GH0
AS-W1224DH0
AS-W1424DH0
AS-W1825DH0

CAUTION

website http://www.lgservice.com

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

• ONLY FOR AUTHORIZED SERVICE PERSONNEL.

2 Room Air Conditioner

Air Conditioner Service Manual

TABLE OF CONTENTS

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

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

Dimensions ...............................................................................................................................

......10

Installation...............................................................................................................................

........14

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

Connecting the cable between indoor unit and outdoor unit.....................................................21

Checking the drainage and forming the pipings.........................................................................23

Air purging ......................................................................................................................................24

Test running ....................................................................................................................................26

Functions.........................................................................................................................................27

Operation.........................................................................................................................................30

Disassembly....................................................................................................................................41

Troubleshooting Guide ..................................................................................................................44

Schematic Diagram ........................................................................................................................65

Product Specifications ..................................................................................................................73

Exploded View ................................................................................................................................75

Replacement Parts List..................................................................................................................78

Service Manual 3

LG Model Name

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

N Walnut
A Gogh
S Sisley
Q Quran
K Mecca

4 Room Air Conditioner

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

Service Manual 5

Safety Precautions

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

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.

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

Service Manual 7

Safety Precautions

■ Operation

Do not turn the air-conditioner ON or OFF by
plugging or unplugging the power plug.

Use a dedicated outlet for this appliance.

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

Grasp the plug to remove the cord from the
outlet. Do not touch it with wet hands.

Do not place a heater or other appliances near
the power cable.

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

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

bustibles near the air conditioner.

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

• There is risk of fire or failure of product.

Wax

Thinner

8 Room Air Conditioner

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

Install the drain hose to ensure that water is
drained away pro perly.

• 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

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

Safety Precautions

10 Room Air Conditioner

Dimensions

Dimensions

Installation plate

D

H

W

W mm 840

H mm 270
D mm 153

Model

Dimension

7k, 9k, 12k, 14k 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.

Symbols Used in this Manual

NOTICE

Service Manual 11

Dimensions

Installation plate

D

H

W

W mm 1090

H mm 300
D mm 178

Model

Dimension

18k, 24k Btu Series

12 Room Air Conditioner

W

L2

L3

L1

D

H

L4

L5

Gas side

(3-way valve)

Liquid side

(2-way valve)

MODEL

DIM unit

W mm 770

H mm 540

D mm 245
L1 mm 285
L2 mm 65
L3 mm 518
L4 mm 10
L5 mm 100

Dimensions

Outdoor Unit

7k, 9k, 12k, 14k Btu Series

Dimensions

Service Manual 13

W

L7 L6 L8 L9

D

L1

L2

L3

L10L11

L4L5

H

Gas side

Liquid side

MODEL

DIM

W mm 870

H mm 655

D mm 320
L1 mm 370
L2 mm 340
L3 mm 25
L4 mm 630
L5 mm 25
L6 mm 546
L7 mm 162
L8 mm 162
L9 mm 54

L10 mm 74.5
L11 mm 79

18k, 24k Btu Series

14 Room Air Conditioner

Installation

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.

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.

More than 10cm

More than

5cm

More than 2.3m

More than

5cm

• 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)

AB

5K~28K 10 5

30K~38K 30 12

Pipe Size

Capacity

(Btu/h)

GAS LIQUID

Max.

Length

A (m)

Additional

Refrigerant

(g/m)

Max.

Elevation

B (m)

Standard

Length

(m)

5k~14k

3/8"(Ø9.52) 1/4"(Ø6.35) 4 or7.5 7 15 20
1/2"(Ø12.7) 1/4"(Ø6.35) 4 or7.5 7 15 20
1/2"(Ø12.7) 1/4"(Ø6.35) 4 or7.5 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) 4or 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

A

B

Outdoor unit

Indoor unit

A

B

A

Oil trap

Outdoor unit

Indoor unit

B

I

Selection of the Best Location

Piping Length and Elevation

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

More than 10cm More than 10cm

More
than 60cm

More than 60cm

More than 70cm

Service Manual 15

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.

How to Fix Installation Plate Drill a Hole in the Wall

Drain hose junction

• Remove the rubber stopple in the desired drain direc­tion.

• Insert drain hose into the handle of drain pan, and join
drain hose and connecting hose according to the figure
by.

Installation Plate

Type "A" screw

Chassis

Hook

5-7mm

(3/16"~5/16")

Indoor

WALL

Outdoor

Installation plate

Left rear piping Right rear piping

Ø70mm

Ø70mm

DB

A

C

Connecting

part

Adhesive

Drain
hose

Only the
desired direction

ABCD

7k, 9k, 12k, 14k 75 65 105 65

18k, 24k 105 65 260 65

CHASSIS

(Grade)

Distance (mm)

16 Room Air Conditioner

Flaring work and connection of piping

Flaring work and connection of piping

Flaring work

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.

Check

• Compare the flared work with figure below.

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

tion and re-flare it.

• 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.(Optional)

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

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.

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 =

Drain hose

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

Connection of piping -- Indoor

When install, make sure that the
remaining parts must be removed
clearlysoasnottodamagethepip­ing and drain hose, especially power
cord and connecting cable.

Copper

pipe

Slanted Uneven Rough

90°

Service Manual 17

Flaring work and connection of piping

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

Drain hose

Connecting

cable

Vinyl tape(narrow)

Connection
pipe

Connecting cable

Vinyl tape
(wide)

Wrap with vinyl tape

Indoor
unit pipe

Pipe

Plastic bands

Insulation material

Vinyl tape(narrow)

Adhesive

Drain pipe

Indoor unit drain hose

Wrench

Indoor unit tubing

Open-end wrench (fixed)

Connection pipe

Flare nut

Indoor unit tubing Flare nut Pipes

Drain hose

Connecting
pipe

Connecting cable

Tape

Drain hose

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.

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.

NOTE: If the drain hose is routed inside the room, insulate
the hose with an insulation material* so that dripping from
"sweating"(condensation) will not damage furniture or floors.

*Foamed polyethylene or equivalent is recommended.

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.)
Ensurethatthehooksareproperlyseatedontheinstalla­tion plate by moving it left and right.

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

Connecting the pipings to the indoor unit and
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.

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.

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

For right rear piping

18 Room Air Conditioner

Flaring work and connection of piping

• 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.

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.

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.

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

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

Insert the connecting cable into the indoor unit.

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

• Make a small loop with the cable for easy connection later.

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.

Tape the drain hose and the connecting cable.

• Connecting cable

Drain pipe

Connecting cable

Wrap with vinyl tape

Drain hose

Pipe

Vinyl tape(wide)

Indoor unit tubing Flare nut Pipes

Installation plate

Spacer

Indoor unit

8cm

Plastic bands

Insulation material

Vinyl tape

Adhesive

Drain hose

Indoor unit drain hose

(narrow)

Wrench

Indoor unit tubing

Connection pipe

Flare nut

Open-end wrench (fixed)

For left rear piping

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

Service Manual 19

Installation Information (For left piping)

• Good case
For left piping. Follow the instruction below.

• Press on the upper side of clamp. ( )

Flaring work and connection of piping

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

Indoor unit installation

• Remove the spacer.

• Ensure that the hooks are properly seated on the installa-

tion 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).

• Bundle the piping and drain hose together by wrapping
them with cloth tape over the range within which they fit
into the rear piping housing section.

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

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.

Vinyl tape(narrow)

Connection
pipe

Connecting cable

Indoor
unit piping

Pipe

Vinyl tape
(wide)

Wrap with vinyl tape

Drain hose

Vinyl tape(narrow)

Pipe

Wrap with
vinyl tape(wide)

Piping for
passage through
piping hole

Tubing holder

Drain hose

Connecting

cable

• Unfold the tubing to downward slowly. ( )

• Bend the tubing to the left side of chassis.

20 Room Air Conditioner

Flaring work and connection of piping

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

Finally, tighten the flare nut with torque wrench
until the wrench clicks.

• When tightening the flare nut with torque wrench, ensure
the direction for tightening follows the arrow on the wrench.

• Bad case

• Following bending type from right to left could cause

problem of pipe damage.

Connection of the pipes-Outdoor

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

Outdoor unit

Gas side piping
(Bigger diameter)

Liquid side
piping
(Smaller
diameter)

Torque wrench

Service Manual 21

Connect the cable to the Indoor unit.

Connecting the cable between indoor unit and outdoor 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.)

• The above circuit diagram is subject to change without notice.

• The earth wire should be longer than the common wires.

• When installing, refer to the circuit diagram behind the panel front of the indoor unit.

• Connect the wires firmly so that they may not be pulled out easily.

• Connect the wires according to color codes, referring to the wiring diagram.

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

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

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

Air

Conditioner

Main power source

7k 9k~14k 18k 24k

0.75 1.0 1.5 2.5

Unit(A) Indoor Indoor Indoor Indoor

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

NORMAL CROSS

-SECTIONAL AREA

Grade

(mm2)

7k 9k~14k 18k 24k

0.75 1.0 1.5 2.5

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

NORMAL CROSS

-SECTIONAL AREA

Grade

(mm2)

Circuit Breaker

Use a circuit
breakerortime
delay fuse.

22 Room Air Conditioner

Connecting the cable between indoor unit and outdoor unit

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

Connect the wires to the terminals on the con­trol board individually.

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

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

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

Connecting cable

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 21))

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

Connect the cable to the outdoor unit

5k~14k 18k 24k~28k 30k, 32k 36k, 38k

15 20 30 30 40

Circuit

Breaker

(A)

Grade

Service Manual 23

Checking the drainage and forming the pipings

Checking the drainage and forming the pipings

Checking the drainage Form the piping

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.

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.

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.

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.

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 equivalent.

Drain piping

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

• Do not make drain piping.

Pull the right and
the left side.

Downward slope

Do not raise

Accumulated
drain water

Tip of drain hose
dipped in water

Air

Waving

Water
leakage

Water
leakage

Ditch

Less than
50mm gap

Water
leakage

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

Trap

24 Room Air Conditioner

Air purging

Air and moisture remaining in the refrigerant system have
undesirable effects as indicated below.

• Pressure in the system rises.

• Operating current rises.

• Cooling(or heating) efficiency drops.

• Moisture in the refrigerant circuit may freeze and block cap-

illary tubing.

• Water may lead to corrosion of parts in the refrigeration
system.

Therefore, the indoor unit and tubing between the indoor and
outdoor unit must be leak tested and evacuated to remove
any noncondensables and moisture from the system.

• Do a leak test of all joints of the tubing(both indoor and out­door) and both gas and liquid side service valves.
Bubbles indicate a leak. Be sure to wipe off the soap with a
clean cloth.

• After the system is found to be free of leaks, relieve the
nitrogen pressure by loosening the charge hose connector
at the nitrogen cylinder. When the system pressure is
reduced to normal, disconnect the hose from the cylinder.

Preparation

• Check that each tube(both liquid and gas side tubes)
between the indoor and outdoor units have been properly
connected and all wiring for the test run has been complet­ed. Remove the service valve caps from both the gas and
the liquid side on the outdoor unit. Note that both the liquid
and the gas side service valves on the outdoor unit are
kept closed at this stage.

Leak test

• Connect the manifold valve(with pressure gauges) and dry
nitrogen gas cylinder to this service port with charge hoses.

• Pressurize the system to no more than 150 P.S.I.G. with
dry nitrogen gas and close the cylinder valve when the
gauge reading reached 150 P.S.I.G. Next, test for leaks
with liquid soap.

Air Purging

Air purging

Air purging with vacuum pump

Be sure to use a manifold valve for air purging. If it is not
available, use a stop valve for this purpose. The "Hi" knob
of the manifold valve must always be kept close.

To avoid nitrogen entering the refrigerant system in a liquid
state, the top of the cylinder must be higher than its bottom
when you pressurize the system. Usually, the cylinder is
used in a vertical standing position.

Lo Hi

Indoor unit

Outdoor unit

Manifold valve

Charge hose

Nitrogen gas
cylinder(in vertical
standing position)

Pressure
gauge

Service Manual 25

Air purging

Evacuation

• Connect the charge hose end described in the preceding
steps to the vacuum pump to evacuate the tubing and
indoor unit.
Confirm the "Lo" knob of the manifold valve is open. Then,
run the vacuum pump.
The operation time for evacuation varies with tubing length
and capacity of the pump. The following table shows the
time required for evacuation.

• When the desired vacuum is reached, close the "Lo" knob
of the manifold valve and stop the vacuum pump.

Finishing the job

• With a service valve wrench, turn the valve stem of liquid
side valve counter-clockwise to fully open the valve.

• Turn the valve stem of gas side valve counter-clockwise to
fully open the valve.

• Loosen the charge hose connected to the gas side service
port slightly to release the pressure, then remove the hose.

• Replace the flare nut and its bonnet on the gas side service
port and fasten the flare nut securely with an adjustable
wrench. This process is very important to prevent leakage
from the system.

• Replace the valve caps at both gas and liquid side service
valves and fasten them tight.

This completes air purging with a vacuum pump.
The air conditioner is now ready to test run.

(1) Remove the caps from the 2-way and 3-way valves.
(2) Remove the service-port cap from the 3-way valve.
(3) To open the 2-way valve turn the valve stem counter-

clockwise approximately 90°, wait for about 2~3 sec, and
close it.

(4) Apply a soap water or a liquid neutral detergent on the

indoor unit connection or outdoor unit connections by a
soft brush to check for leakage of the connecting points
of the piping.

(5) If bubbles come out, the pipes have leakage.

Soap water method

Gas side

Liquid side

Cap

Hexagonal wrench

2-way valve

(Open)

3-way valve

(Close)

Required time for evacuation when 30 gal/h vacuum

pump is used

10 min. or more 15 min. or more

If tubing length is less than 10m (33 ft)

if tubing length is longer than 10m (33 ft)

Indoor unit

Outdoor unit

Lo Hi

Manifold valve

Vacuum pump

Pressure
gauge

Open

Close

26 Room Air Conditioner

Test running

Test Running

1. Check that all tubing and wiring have been properly con-

nected.

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

open.

Settlement of outdoor unit

• Anchor the outdoor unit with a bolt and nut(ø10mm) tightly
and horizontally on a concrete or rigid mount.

• When installing on the wall, roof or rooftop, anchor the
mounting base securely with a nail or wire assuming the
influence of wind and earthquake.

• In the case when the vibration of the unit is conveyed to the
hose, secure the unit with an anti-vibration bushing.

NOTE: 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.

Power-Failure Compensation Function User Selection ON/OFF

1) Operation Sequence
Press the forced switch until BUZZER sounds 2 times

(beep~beep~).
Release the forced switch if BUZZER sounds.
Check the function selection ON/OFF with the operation LED.

2) Checking function-selection ON/OFF

- Function-Selection ON: One time blinking of operation LED

would repeat 4 times.

- Function-Selection OFF: Two times blinking of operation LED

would repeat 4 times.

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)

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/cm2G(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

Power

button

Service Manual 27

Functions

Functions

Indoor Unit

Cooling Mode Operation

Healty dehumidification Mode Operation

Heating Mode Operation

Jet Cool Mode Operation

Jet Heat Mode Operation

Energy Saving Cooling Mode Operation

Operation ON/OFF by Remote controller

Sensing the Room Temperature

• Room temperature sensor. (Thermistor)

• Pipe temperature sensor. (Thermistor)

Room temperature control

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

Starting the Current Control

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

Time Delay Safety Control

• Restarting is for approx. 2 minutes.

Indoor Fan Speed Control

• Super High, High, Med, Low

Operation indication Lamps (LED)

--- Lights up in operation

--- Lights up in Sleep Mode (Optional)

--- Lights up in Timer Mode

--- Lights up in Preheat Mode (for Heating Model)

--- Lights up in Plasma Air Clean Mode

--- Lights up in during Energy-Saving Cooling Mode Operation (Optional)

28 Room Air Conditioner

Functions

Sleep Mode Auto Control

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

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

Natural Air Control by CHAOS Logic

• The fan is switched to intermittent or irregular operation

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

Airflow Direction Control

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

Auto Changeover

Energy-Saving Control(Optional)

Horizontal airflow Direction Control(Optional)

Auto Clean(Optional)

Plasma

• The function will be operated while in any operation mode with selecting the function.

• The function is to be stopped while it isoperating with selecting the function.

Defrost(Deice) Control (Heating)

• Both the indoor and outdoor fan stops during defrosting.

Hot-start Control (Heating)

• The indoor fan stops until the evaporator pipe temperature will be reached at 34°C.

Heater (Optional)

Service Manual 29

Functions

•

If power is on, it will operate to chage capacitor on controller and power relay will operate after about 2~5sec.

• The active power filter is designed to correct power factor(cos θ) and to regulate DC link voltage.

• It will be operated PFC circuit when the compressor freq. is over 30Hz and wattage is over 450 watt.

• The final operating freq. of comp. is set the lowest freq. that limited outdoor temp., discharge pipe temp.,

heat-sink temp., target freq., owing to CT.

• It will be changed the drive freq. of comp. according to temp. of indoor and outdoor.

• It is only operated in the heating operation mode except defrosting operation.

• High speed

- Although fan motor speed is middle, it will change high speed in case of below AC193V, over 45°Cof
outdoor temp., and over fc, fh of comp. Freq.

• Middle speed

- Nomal mode

• Low speed

- Although fan motor speed is middle, it will change Low speed in case of over AC 270V, over 21°C
(Heating Mode) of outdoor temp. below 24°C (Cooling Mode) of outdoor temp.

• When the temp. of power module increases to 85°C, controller decreases Freq. of Comp.

Outdoor Unit

Power Relay Control

Active Power Filter Control(PSC)

Comp. Freq. Control

OverheatIng. Protection(Power Module)

Freq. Speed Control(Up/Down Speed)

Total Current Control (Over Current Protection)

DC Peak Current Control

4 way Valve Control

Outdoor Fan Motor Control

Discharge Pipe Temp. Control

Low Ambient

Comp. Torque Control

Over Heating Protection (Comp.)

30 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.

• If the indoor pipe temperaure is below 0°C in 7 min. after the compressor operates without pause while in

cooling cycle operation mode,
➔ compressor, outdoor fan are turned off.

• When indoor pipe temp. is 7°C or higher after 2 min pause of compressor
➔ compressor, outdoor fan is turned on according to the condition of the room temperature.

Comp. free

Comp. Step 4
Comp. Step 2

Comp. off

0˚C

3˚C

6˚C

7˚C

Indoor pipe
temp.

Protection of the evaporator pipe from frosting

Service Manual 31

Operation

Cooling mode operation

• Operating frequency of compressor depend on the difference of the temperature.
(= intake air Temp.- Compressor off Temp.

• Compressor off temp.= setting temp.-0.5°C

on temp. = setting temp. +0.5°C

• If compressor operates at some operating frequency, the operating frequency of compressor cannot be
changed within 30 seconds.

• Condition of compressor turned off

- When intake air temperature stay at the temperature between setting temp.

-

0.5°C and setting temp.

-

1.0°C for 3 minutes continuously.

- When intake air temperature reaches below the temperature of setting temp.

-

1.0°C.

• Compressor 2 minutes delay

- The compressor can restart minimum 2 minutes later after compressor off.

Temp. differences Comp. Operating frequency

over 2.5°C Step 7

2.0~2.49°C Step 6

1.5~1.99°C Step 5

1.0~1.49°C Step 4

0.5~0.99°C Step 3

0.0~0.49°C Step 2

0.5~0°C Step 1

[The operating freq. step of comp.]

[The targeting operating freq. of comp. each model]

Model

AS-W0964DH0/GH0 35 39 43 47 52 57 62
AS-W1264DH0/GH0 20 35 47 56 63 70 78
AS-W1865DH0/GH0 16 32 58 64 70 75 85

AS-W1224DH0 20 35 47 54 65 70 74
AS-W1424DH0 20 35 47 54 72 74 78
AS-W1825DH0 16 32 53 62 72 75 85

Comp. Operating frequency

Step 1 Step 2 Step 3 Step 4 Step 5(Fc) Step 6 Step 7

Healthy Dehumidification mode operation

• When the dehumidification operation is set by the remote controller the intake air temperature is detected and
the setting temp. is automatically set according to the intake air temperature.

• When intake air temp reaches above the temp of setting +1.0°C, condition of compressor same as cooling
mode operation.

• When intake air temperature reaches bolow the temp of setting –1.0°C, compressor operate step1~step3 and
indoor fan speed repeatly operate low or stop.

Intake air Temp.

26°C ≤ intake air temp.

24°C ≤ intake air temp.< 26°C

18°C < intake air temp. < 24°C

intake air temp. ≤ 18°C

Setting Temp.

25°C

intake air temp. -1°C

intake air temp. -0.5°C

18°C

32 Room Air Conditioner

Operation

• Operating frequency of compressor depend on the difference of the temperature
(= compressor off temp. - intake air temp.)

• Compressor off temp. = setting temp.+3.0°C

on temp. = setting temp.

• If compressor operates at some operation frequency, the operating frequency of compressor cannot be
changed within 30 seconds.

• Condition of compressor turned off

- When intake air temperature reaches +3°C above the setting temperature.

• Condition of indoor fan turned off

- While in compressor on:indoor pipe temp. < 30°C

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

• Compressor 2minutes delay

- After compressor off, the compressor can restart minimum 2 minutes later.

Temp. differences

2.5~3.0°C

2.0~2.49°C

1.5~1.99°C

1.0~1.49°C

0.5~0.99°C

0.0~0.49°C
~0.0°C

Comp. Operating frequency

Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7

[ The operating freq. step of comp]

[The targeting operating freq. of comp. each model]

Heating mode operation

Model

AS-W0964DH0/GH0 35 44 53 62 69 74 80
AS-W1264DH0/GH0 20 38 53 63 72 79 86
AS-W1865DH0/GH0 16 38 47 65 79 87 96

AS-W1224DH0 20 35 53 63 70 79 86
AS-W1424DH0 20 35 53 63 77 79 86
AS-W1825DH0 16 38 47 62 79 87 90

Comp. Operating frequency

Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7

• 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 super-high speed for 30 min. at cooling mode operation.

• In the Jet Cool mode, the room temperature is controlled to the setting temperature, 18°C.

• When the sleep timer mode input while the Jet Cool mode operation, the Jet Cool mode has the priority.

• When the Jet Cool key is input, the upper/lower vane is reset to those of the initial cooling mode and then

operated in order that the air outflow could reach further.

Jet cool mode operation

Service Manual 33

Operation

• While in cooling mode or Fuzzy operation, the Jet Heat key cannot be input. When it is input while in the
Heating mode operation (dehumidification), the Jet Heat mode is operated.

• In the Jet Heat mode, the indoor fan is operated super-high speed for 60 min. at Heating mode operation.

• In the Jet Heat mode, the room temperature is controlled to the setting temperature, 30°C.

• When the sleep timer mode input while the Jet Heat mode operation, the Jet Heat mode has the priority.

• When the Jet Heat key is input, the upper/lower vane is reset to those of the initial Jet heating mode and

then operated in order that the air outflow could reach under flow.

1. New Chaos swing mode

• By the Chaos swing key input, the upper/lower vane automatically operates with the Chaos swing or it is
fixed to the desired direction.

Mode2

Mode3

Mode4

Mode5

Mode6

Mode7

Mode8

Mode9

OPEN

CLOSED

8°

Cooling Operation

120°

Mode2

Mode3

Mode4

Mode5

Mode6

Mode7

Mode8

Mode9

OPEN

CLOSED

8°

Heating Operation

120°

Mode1

Mode1

Mode2

Mode3

Mode4

Mode5

Mode6

Mode7

Mode8

OPEN

CLOSED

8°

Cooling Operation

Mode1

Mode2

Mode3

Mode4

Mode5

Mode6

Mode7

Mode8

OPEN

CLOSED

8°

Heating Operation

110°110°

Start

(S4) 7, 9, 12, 14k Model

(S5) 18, 24k Model

Start

Start

Start

Jet heat mode operation

Swing mode

34 Room Air Conditioner

Operation

1. Sleep timer operation for cooling cycle

• While in cooling mode operation, 30 min. later since the start of the sleep timer, the setting temperature

increase by 1°C. After another 30min. elapse, it increases by 1°C again.

2. Sleep timer operation for heating cycle

• While in heating mode operation, 60 min. later since the start of the sleep timer, the setting temperature

decrease by 1°C. After another 60min. elapse, it decreases by 1°C again.

Setting temp. (˚C)

1.0˚C up

1.0˚C up

Cooling ON temp.
(Setting temp. +0.5˚C)

Cooling OFF temp.
(Setting temp. -0.5˚C)

0.5 1 Sleep time (hr

)

• When the sleep time is reached after [1,2,3,4,5,6,7hr] is input by the remote control during the operation, the
operation of the appliance stops.

• When the appliance is on pause, the sleep timer mode cannot be input.

Sleep timer operation

Setting temp. (°C)

Heating ON temp.
(Setting temp)

Heating OFF temp.
(Setting temp. +3.0°C)

1.0°C down

1.0°C down

1 2 Sleep time (hr

)

Service Manual 35

Operation

Auto restarting operation

Forced operation

Test Operation

• When the power is restarted after a sudden power failure while in appliance operation, the mode before the
power failure is kept on the memory and the appliance automatically operates in the mode on the memory.

• Operation mode that is kept on the memory

- State of operation ON/OFF

- Operation mode/setting temp./selected airflow speed

- Sleep timer mode/remaining time of sleep timer

- Chaos Swing

• To operate the appliance by force in case that the remote control is lost, the forced operation selection switch
is on the main unit of the appliance to operate the appliance in the standard conditions.

• The operation condition is set according to the outdoor temp. and intake air temperature as follows.

❈ The unit select before operating mode in 3 hours.

• Press the Tact Switch for compulsory operation of the main body for 3 seconds in order to operate in the trial
operation mode.

- Operation mode: Cold

- Indoor pan: Strong wind

- COMP frequency: Step 5

- COMP compulsorily operates for about 18 minutes irrespective of indoor temperature.

Indoor temp.

over 24°C

21~24°C

below 21°C

Setting temp.

22°C
23°C
24°C

Setting speed of

indoor fan

High speed

Operating Mode

Cooling

Healthy Dehumidification

Heating

36 Room Air Conditioner

Operation

• Power relay turns on 1 second later after the power is input to the outdoor unit.

• Control sequence : power on ➔ PTC operating ➔ power relay on

■ CT1 control

• If the operating current reaches I1, the operating frequency of the compressor decrease.

• After decreasing the operating frequency by 1step, if operating current is below I1 for 60 seconds continuous-

ly, the operating frequency of compressor increase by 1step.

■ CT2 control

• If the operating current of the appliance reaches I2, the compressor stop instantly and 2 minutes later the
compressor restart again.

• If CT2 occurs 5 times within 1hour, the appliance turn off and display ERROR CODE 7.

❇ I1:Current of operating frequency down

I2: Current of compressor cut off

cf. I1 is set the lowest level between intial value and in case dectection of dc paeak current.

Control table

■ DC Peak Current Error by a fault signal of IPM

• If the operating current of IPM reaches 35A ±3A, the compressor stop instantly.

• If DC PEAK occurs 5 times within 1 hour, the appliance turns off and display ERROR CODE 6.

■ DC Peak Current Error by the compressor lock

• If the DC LINK voltage below DC 140V occurs 5 times within 1 hour while the compressor is operating, the
appliance turns off and display ERROR CODE 6.

■ DC Peak Current Error by the Outdoor Fan Lock

• If it’s 5 times within 1 hour in case of the temperature of outdoor pipe TH is over 65°C while the compressor is
operating, the appliance turns off and display ERROR CODE 6.

Power relay control

Protection from total current control

Protection from DC Peak Current

1 AS-0964DH0 5.5 6.5 6 7 9
2 AS-1264DH0 6.5 7.5 7 8 10
3 AS-1865DH0 9.0 10.5 9.5 11.0 13

I1

Cooling Heating Cooling Heating

Outdoor temp ≥ 38°C Outdoor temp < 38°C

I2

Model

Service Manual 37

Operation

• If the temperature of the heat sink TH. reaches over Toff, the Compressor stop instantly.

• It will be limited the compressor operating frequency according to the heat sink TH.(refer to below FIG.)

• It will be blink 4 times, when the thermistor is open or short, also the temperature is over Toff.

• If the temperature of the discharge pipe of compressor reaches over 130°C or below -30°C the compressor

stop instantly.

• It will be limited the compressor operating frequency according to the compressor dome TH.(Refer to below

Fig.)

• Temperature range by COMP SPEC varies by 10°C.

Portection from overheating of power module

Portection from overheating of compressor

1 AS-W0964DH0 95 105
2 AS-W1264DH0 95 105
3 AS-W1865DH0 85 95

No. MODEL T on T off

1 AS-W0964DH0 95 105
2 AS-W1264DH0 95 105
3 AS-W1865DH0 98 108

No. MODEL T on T off

T off °C

∆T = (T off - T on)
T1 = T on + ∆T
T2 = T on + 2 * ∆T

Heat Sink Temp.

T2 °C

T1 °C

T on °C

COMP

Freq.

Free OFF FreeFc-1 Fc-1Fc-2 Fc-2

D-Pipe T emp .

T off °C

T3 °C

T2 °C

T1 °C

-13 °C

COMP Freq. Free Free

Fh min

∆T = (T off - T2)/2
T1 = T2 - 2 * ∆T
T3 = T2 + ∆T

OFFFc-1 Fc-1Fc-2 Fc-2

38 Room Air Conditioner

Operation

• 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.

• Defrosting control is available 50 minutes later since heating cycle started and the pipe temperature of out­door unit reaches below -6°C.

Setting Freq.

Operating
Freq. of
Comp.

4-Way

EEV
Open step

Outdoor
FAN

Indoor
FAN

Pre-Heat
LED

Deice STEP

Fh

min

Minimum Time

of Heating

Main Deice time

Fh

min

Fh

min

ON

OFF

Setting
Speed

ON

Hot

Start

OFF

Hot

Starting

ON

OFF

OFF

0123456

Setting

Starting step

Setting
Freq.

Setting
Speed

Setting
Speed

Hi Speed

Defrosting control

Service Manual 39

Operation

• Function used to perform the Self Cleaning to prevent the Unit from Fungus and Bad Odors.

• Used after the Shut Down of Cooling Operation to Clean the Evaporator and keep it as fresh for the Next operation.

• During Self Cleaning the Outdoor Unit is Switched off.

• The function is easy to be operated as It is accessed through the Remote Controller.

Auto Cleaning

Auto Changeover

Low Ambient

Comp.

ON

OFF

Setting Step Low

Indoor Fan

ON

2) Cooling/only Model

Cooling CYCLE

OFF

30 Min

Fan

ON

1) Heat/pump Model

Cooling CYCLE

OFF

Comp.

ON

ONOFF OFF

Indoor Fan Setting Step Low Low Low

13 Min

HeatingFan

60 Sec 120 Sec

Fan

• The air conditioner changes the operation
mode automatically to keep indoor tempera­ture.

• When room temperature vary over ±2°C with
respect to setting temperature, air condition­er keeps the room temperature in ±2°C with
respect to setting temperature by auto
change mode.

• If outdoor temperature drops below certain temperature,liquid back is prevented by reducing fan speed.
It can prevent frosting of evaporator and keep cooling operation

• No matter even if the outdoor temperature reaches -10°C.

• You can Cool your room at your desired temperature all your around.

Freq.

- 0°C

°…

Outdoor temp.

Outdoor pipe temp.
0°C outdoor fan On/Off
control

°

Comp Freq.

Outdoor fan

On

On

Off

Off

Outdoor temp.:-10°C

-5

0

5

10

15

20

25

0 50 100 150 200

Time(Min.)

Temp.(°C)

Outdoor fan On/Off control

Cond . temp.

COOLING

Auto
Change
Mode.

Outdoor temp.
Indoor temp.

Outdoor
temp.

30°C

20°C

10°C

+

2°C

+

1°C

+

0.5°C

Set Temp.

-

0.5°C

-

1°C

-

2°C

HEATING

40 Room Air Conditioner

Remote Control Operations

Operation

The controls will look like the following.

1. START/STOP BUTTON

Operation starts when this button is pressed and
stops when the button is pressed again.

2. OPERATION MODE SELECTION BUTTON

Used to select the operation mode.

3. ROOM TEMPERATURE SETTING BUTTONS

Used to select the room temperature.

4. INDOOR FAN SPEED SELECTOR

Used to select fan speed in four steps
low, medium, high and CHAOS.

5. JET COOL/JET HEAT

Used to start or stop the speed cooling/heating.
(speed cooling/heating operates super high fan speed in
cooling/heating mode.)

6. CHAOS SWING BUTTON

Used to stop or start louver movement and set
the desired up/down airflow direction.

7. ON/OFF TIMER BUTTONS

Used to set the time of starting and stopping operation.

8. TIME SETTING BUTTONS

Used to adjust the time.

9. TIMER SET/CANCEL BUTTON

Used to set the timer when the desired time is obtained
and to cancel the Timer operation.

10. SLEEP MODE AUTO BUTTON

Used to set Sleep Mode Auto operation.

11. AIR CIRCULATION BUTTON

Used to circulate the room air without cooling or heating.

12. ROOM TEMPERATURE CHECKING BUTTON

Used to check the room temperature.

13. PLASMA(OPTIONAL)

Used to start or stop the plasma function.

14. HORIZONTAL AIRFLOW DIRECTION CONTROL
BUTTON (OPTIONAL)

Used to set the desired horizontal airflow direction.

15. RESET BUTTON

Used prior to resetting time.

16. 2ND F BUTTON

Used prior to using modes printed in blue at the bottom of
buttons.

17. AUTO CLEAN (OPTIONAL)

Used to set Auto Clean mode.

ON

OFF

CANCEL

AUTO CLEAN

SET

1

3

5

4

9

10

12

14
16

7

2

8

13
15

11

6

Cooling Operation

Auto Operation or Auto Changeover

Healthy Dehumidification Operation

Flip-up door
(opened)

Heating Operation

Signal transmitter

•

Cooling Model( ), Heat Pump Model( )

17

Operation Mode

Service Manual 41

Disassembly

Disassembly

Indoor Unit

Disconnect the unit from power supply before mak­ing any checks.
Be sure the power switch is set to “OFF”.

To remove the Grille from the Chassis.

• Set the up-and-down air discharge louver to open
position (horizontally) by finger pressure.

• Remove the securing screws.

• To remove the Grille, pull the lower left and right

side of the grille toward you (slightly tilted) and lift it
straight upward.

1. Before removing the control box, be sure to

take out the wire screwed at the other end.

Earth
Conductor

42 Room Air Conditioner

Disassembly

2. To remove the Control Box.

• Remove securing screws.

• Pull the control box out from the chassis

carefully.

3. To remove the Discharge Grille.

• Unhook the discharge grille and pull the
discharge grille out from the chassis carefully.

4. To remove the Evaporator.

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

Screw

• When repair, do not damage the Caution label.

Service Manual 43

Disassembly

• Unhook the tab on the right inside of the chassis
at the same time, slightly pull the evaporator
toward you until the tab is clear of the slot.

5. To remove the Motor Cover

• Remove 2 securing screw.

• Pull the motor cover out from the chassis

carefully.

6. To remove the Cross-Flow Fan

• Loosen the screw securing the cross-flow fan to
the fan motor (do not remove).

• Lift up the right side of the cross-flow fan and the
fan motor, separate the fan motor from the
cross-flow fan.

• Remove the left end of the cross-flow fan from
the self-aligning bearing.

Motor cover

Bearing

Cross-flow fan

44 Room Air Conditioner

Troubleshooting Guide

Troubleshooting Guide

INDOOR UNIT OUTDOOR UNIT

HEAT
EXCHANGE
(EVAPORATOR)

HEAT
EXCHANGE
(CONDENSER)

EER

COMPRESSOR

ACCUMU
LATOR

GAS SIDE

3-WAY VALVE

LIQUID SIDE

3-WAY VALVE

COOLING
HEATING

REVERSING
VALVE

INDOOR UNIT OUTDOOR UNIT

HEAT
EXCHANGE
(EVAPORATOR)

HEAT
EXCHANGE
(CONDENSER)

COMPRESSOR

ACCUMU
LATOR

GAS SIDE

3-WAY VALVE

LIQUID SIDE

3-WAY VALVE

CHECK VALVE

COOLING
HEATING

REVERSING
VALVE

(1) Cooling Only Models

Refrigeration Cycle Diagram

(2) Cooling & Heating Models

Service Manual 45

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

A

B

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

A

Outdoor unit

B

46 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

Open Open

Works

Shipping

Air purging
(Installation)

Operation

Pumping down
(Transfering)

Evacuation
(Servicing)

Gas charging
(Servicing)

Pressure check
(Servicing)

Gas releasing
(Servicing)

1.

2.

3.

4.

5.

6.

Valve cap

Open position
Closed position

Pin

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)

Service Manual 47

Troubleshooting Guide

Required tools :

hexagonal wrench, adjustable wrench,
torque wrenches, wrench to hold the
joints, and gas leak detector.

The additional gas for air purging has been charged
in the outdoor unit.
However, if the flare connections have not be done
correctly and there gas leaks, a gas cylinder and the
charge set will be needed.

The air in the indoor unit and in the piping must be
purged. If air remains in the refrigeration pipes, it will
affect the compressor, reduce to cooling capacity,
and could lead to a malfunction.

• Procedure

(1) Recheck the piping connections.
(2) Open the valve stem of the 2-way valve coun-

terclockwise approximately 90°, wait 10 sec­onds, and then set it to closed position.

– Be sure to use a hexagonal wrench to operate

the valve stem.

(3) Check for gas leakage.

– Check the flare connections for gas leakage.

(4) Purge the air from the system.

– Set the 2-way valve to the open position and

remove the cap from the 3-way valve’s service
port.

– Using the hexagonal wrench to press the valve

core pin, discharge for three seconds and then
wait for one minute. Repeat this three times.

(5) Use torque wrench to tighten the service port

nut to a torque of 1.8kg.cm.

(6) Set the 3-way valve to the back seat.
(7) Mount the valve stem nuts to the 2-way and 3-

way valves.

(8) Check for gas leakage.

– At this time, especially check for gas leakage

from the 2-way and 3-way valve’s stem nuts,
and from the service port nut.

Service port nut:
Be sure, using a torque wrench to tighten the service port nut (after using the service port), so that it prevents the
gas leakage from the refrigeration cycle.

CAUTION:

Do not leak the gas in the air during Air purging.

CAUTION:

If gas leakage are discovered
in step (3) above, take the following
mesures :

If the gas leaks stop when the piping connections
are tightened further, continue working from step (4).
If the gas leaks do not stop when the connections
are retightened, repair the location of the leak, dis­charge all of the gas through the service port, and
then recharge with the specified amount of gas from
a gas cylinder.

Liquid side

Outdoor unit

3-way
valve

Gas side

Indoor unit

2-way
valve

Open

Clsed

Air purging

48 Room Air Conditioner

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’sstemnutsandtheser­vice 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.

Lo

Closed

Purge the air

Outdoor unit

Indoor unit

Liquid side

Gas side

CLOSE

Open

2-Way
valve

3-Way
valve

CLOSE

Pumping Down

Service Manual 49

Troubleshooting Guide

Re-air Purging

(Re-installation)

• Procedure

(1) Confirm that both the liquid side valve and the

gas side valve are set to the closed position.

(2) Connect the charge set and a gas cylinder to

the service port of the Gas side valve.

– Leave the valve on the gas cylinder closed.

(3) Air purging.

– Open the valves on the gas cylinder and the

charge set. Purge the air by loosening the flare
nut on the liquid side valve approximately 45°
for 3 seconds then closing it for 1 minute;
repeat 3 times.

– After purging the air, use a torque wrench to

tighten the flare nut on liquid side valve.

(4) Check for gas leakage.

– Check the flare connections for gas leakage.

(5) Discharge the refrigerant.

– Close the valve on the gas cylinder and dis-

charge the refrigerant until the gauge indicates
3 to 5 kg/cm2g.

(6) Disconnect the charge set and the gas cylin-

der, and set the Liquid side and Gas side
valves to the open position.

– Be sure to use a hexagonal wrench to operate

the valve stems.

(7) 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: Do not leak the gas in the air
during Air Purging.

Lo

Closed

OPEN

Closed

Gas cylinder

R22

Outdoor unit

Indoor unit

Liquid side

Gas side

CLOSE

3-Way
valve

3-Way
valve

50 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/cm

2

G), discharge the refrig­erant until the gauge indicates 0.5 to 1
kg/cm

2

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.

Lo

Open

Open

3-Way
valve

3-Way
valve

Gas side

CLOSEOPEN

Outdoor unit

Liquid side

Indoor unit

Service Manual 51

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.

Lo

Open

Open

Vacuum pump

3-Way
valve

Outdoor unit

Liquid side

Indoor unit

Gas side

3-Way
valve

CLOSE

OPEN

52 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.

\

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

Lo

(1)

OPEN

Liquid side

Gas side

CLOSE

3-Way

Open

valve

Open

3-Way
valve

Outdoor unit

Service Manual 53

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 8.5~9.5kg/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.

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

NOTICE

NOTICE

54 Room Air Conditioner

Troubleshooting Guide

Self diagnosis Function

1. Error indicator of air conditioner

1) Indoor : Operating LED / Outdoor : LED01M(Red) on the outdoor PCB

2) 2 more errors occur at same time

- Air conditioner Off condition : Display the error code of product off cause

- Air conditioner On condition : Display the prior Error Code

2. Cancellation of Error indicator

1) Error Code 1, 2, 3, 4, 10 : Error indicator canceled when cause of error recovered

2) Error Code 5, 8, 9 : Keep displaying Error indicator by restarting air conditioner,
although cause of error recovered

3) Error Code 6, 7 : Error indicator canceled when power reset (Power Cord Off & On)

Error

Code

1

2

4

5

6

7

1 time

3

sec

2

Error Indicator

1

time

sec

3

times

3

sec

4times

3 sec

5times

3 sec

2

times

times

6

3

3

1

time

3

sec

sec

times

7

3

sec

sec

1

time

3 sec

times

2

3

sec

4

times

3

1

2times

sec

5times

sec

3

6

7

time

times

times

Cause of Error

• Indoor Temp. sensor error

- Sensor open or short

• Outdoor Temp. sensor error

- Sensor open or short

• Heat Sink sensor error

- Sensor open or short

- Heat Sink temp is over 95°…

• Communication error

• DC Peak error

• Over current error (CT2)

Display

Indoor Outdoor

O

O

O

O

O

O

O

O

O

O

O

Indoor

Operation

ON

ON

ON

OFF

SHUT

DOWN

SHUT

DOWN

9

10

8times 8times

8

sec

3

9times

sec

3

10times

3 sec

9

times

10

• Indoor fan lock error
(BLDC fan model only)

• Outdoor fan lock error
(BLDC fan model only)

times

O

O

O

O

O

OFF

OFF

ON

Service Manual 55

Troubleshooting Guide

■ Precaution in Service or Check

Even after stopping the operation of product, it takes some time to discharge the remaining electricity of the
electrolytic capacitor that was charged. Before starting a checking or repairing job, pull out the plug out of the
outlet and make sure that the lamp on the control board outdoor unit is off.

■ The Diagnosis Procedure

Check the supplied voltage to product (AC 220V/230V ± 30V).

Check the connecting cable between Indoor and Outdoor.

Check the blinking number of operation indicator

(refer to the self-diagnosis function).

Check the self-diagnosis table

• Check the condition of connectors

• The condition of P.C.B pattern.

• Check the condition of connectors.

• The condition of P.C.B pattern.

• The electronic components.

Indoor Outdoor

56 Room Air Conditioner

Troubleshooting Guide

Electronic Parts

❇ Refer to electronic contorol device drawing & schematic diagram.

The Product doesn’t operate at all.

Turn off the main power and wait to 10 seconds

Turn on the main power again.

Does "Beeping" sound is made from the indoor unit?

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

•

Check CN-DISP1

CN-DISP2 of indoor PCB

Check the voltage of power(AC220V/AC240V, 50Hz).

• The voltage of main power.

• The voltage applied to the unit.

• The connecting method of Indoor/Outdoor connecting cable (each color)

• The P.C.B. Ass'y

(Fuse, Noise Filter, Power Module, Bridge Diode, etc.)

Trouble 1

NO

YES

The operation check of the Indoor P.C.B. Ass'y

Procedure

1) The input voltage of power mod­ule.

2) The output voltage of power mod­ule.

4) IC04D(7805)

5) IC01A(KIA7036)

Specification

1) AC230V ± 30V
: Check the rated voltage

2) 12V ± 3V

4) DC5V

5) The voltage of micom pin 19
: DC4.5V↑

Remedy

1) Check the power outlet.

2) Replace
P.C.B Ass'y

4) Replace P.C.B Ass'y

5) Replace P.C.B Ass'y

Service Manual 57

Troubleshooting Guide

Turn on main power.

While the compressor has been stopped, the compressor does not operate

owing to the delaying function for 2 minutes after stopped.

When the compressor stopped Indoor Fan is driven by a low speed.

At this point the wind speed is not controlled by the remote controller.

(When operated in the Sleeping Mode, the wind speed is set to the low speed as force).)

Caused by the remote controller.

Caused by other parts except

the remote controller

When the mark ( ) is displayed in LCD

screen, replace battery.

Check the contact of CN-DISP 1, 2 connector

Check DISP P.C.B Ass'y

-Voltage between CN-DISP1 - :DC+5V

Check point

• Check the connecting circuit between
MICOM PIN and CN-DISP1 PIN

• Check receiver ass'y

Product doesn't operate with the remote controller.

Trouble 2

58 Room Air Conditioner

Troubleshooting Guide

Troubleshooting for error code

Error code

Description Cause of error

Indoor TH. is short or

1

open

Check flow

Indoor TH. is connected to
Indoor pcb

- Connect to CN-TH1 in
indoor pcb assembly

assembly ?

No

• Indoor TH. (sensor) is short or open

• Indoor TH. (sensor) is not connected to the indoor pcb assembly

• Damage or defect on the sensing circuit of indoor pcb assembly.

(R01H, R02H, R03H, R04H, C01H, C02H)

YES

Indoor TH. is right ?

No

Check Indoor TH.

- Measure resistance of TH.
(air : about 10k Ω at 25°C,
pipe : about 5k Ω at 25 °C)

YES

Sensing circuit of indoor
pcb

is right ?

No

- Check soldering state of
R01H ~ R04H, C01H, C02H

Error code

Description

Outdoor TH. is short or

2

open

Check flow

Outdoor TH. is connected to
outdoor pcb

- Connect to CN-TH1 in
outdoor pcb assembly

assembly ?

No

• Outdoor TH. (sensor) is short or open

• Outdoor TH. (sensor) is not connected to the outdoor pcb assembly

• Damage or defect on the sensing circuit of outdoor pcb assembly.

(R03H~R06H, C02H, C03H)

YES

Outdoor TH. is right ?

No

Check outdoor TH.

- Measure resistance of TH.
(air : about 10k Ω at 25°C,
pipe : about 5k Ω at 25 °C)

Cause of error

YES

Sensing circuit of outdoor

is right ?

pcb

- Check soldering state of
R03H ~ R06H, C02H, C03H

No

Service Manual 59

Troubleshooting Guide

• 9K / 12K

• 18K

Error code

Description Cause of error

Heat-sink Temp. is over
95°C

4

Heat-sink TH.
is open or short

Check flow

Heat-sink TH is connected to
outdoor PCB assembly?

No

- Connect to CN-TH2 in
outdoor PCB assembly

• Heat-sink TH. is damaged(short or open).

• Heat-sink Temp. is over 95°C

• Damage or defect on the sensing circuit of outdoor pcb assembly.

(R01H, R02H, C01H)

YES

Heat-sink TH. in INV-IC is
Right ?

No

Check heat-sink TH.

- Measure resistance of TH.
(about 10kΩ at 25 °C)

YES

Sensing circuit of outdoor
pcb is right ?

No

- Check soldering state of
R01H, R02H, C01H

Error code

Heat-sink Temp. is over
95°C

4

Heat-sink TH. in outdoor
pcb

Check flow

Heat-sink TH. Is connected
to CN-TH2 in outdoor pcb ?

Connect to CN-TH2 in
Outdoor pcb assembly

Description

is open or short

No

• Heat-sink TH. in outdoor pcb is open or short

• Heat-sink Temp. is over 95°C

• Damage or defect on the sensing circuit of outdoor pcb assembly.

(R01H, R02H, C01H)

YES

Heat-sink TH. in outdoor
pcb is Right ?

No

Check heat-sink TH.

- Measure resistance of TH.
(about 10kΩ at 25 °C)

Cause of error

YES

Sensing circuit of outdoor
pcb is right ?

No

- Check soldering state of
R01H, R02H, C01H

60 Room Air Conditioner

Troubleshooting Guide

Error code

5

Communication Error

Check flow

Wiring connection
Is right ?

No

Indoor
1(BR) 1(BR)
2(BL) 2(BL)
3(GN/YL) 3(GN/YL)
4(RD) 4(RD)

Outdoor

Description Cause of error

• Wrong or missing wiring between indoor and outdoor unit cable

• Defect of communication components in indoor pcb assembly

• Defect of communication components in outdoor pcb assembly

• Defect of power supply components in outdoor pcb assembly

• No ground connection in air conditioner unit

(affected by noise in power source)

YES

Is the voltage of T/Block

, in outdoor about

AC 220/240V ?

No

Check power connector
Is not connected to the
T/Block in indoor unit.

YES

Is the voltage of GND & DC5V in
Outdoor pcb about DC 5V ?

No

Check FUSE, NF01/02J, PTC,
Power Module, BD-01S in
Outdoor pcb assembly

YES

Communication circuit of indoor
& outdoor pcb Is right ?

No

Check IC01K, IC02K,D01K~D03K,
ZD01K~ZD03K, R01K~R10K,
C01K~C04K

YES

Ground connection is installed ?
(power outlet or outdoor chassis)

No

Install ground connection from outdoor
unit. (In case power outlet has no earth
port)

Earth port

Service Manual 61

Troubleshooting Guide

Error code

6

Description Cause of error

DC Peak Error

Check flow

Supplied voltage to
Outdoor pcb is about
AC 220/240V ?

No

Check power source

• Supplied power is not normal

•

Comp Connector (CN-U,V,W) is disconnected or inserted to wrong

position

• Compressor is damaged (coil short) ➔ replace compressor

• Too much Refrigerant

• Defect in outdoor pcb assembly ➔ replace pcb assembly

YES

Is connector (CN-U,V,W)
connected to compressor and
inserted to pcb in right position ?

No

Check CN-U,V,W connector
(U : RD, V : BL, W : YL)

Cause of error

YES

Refrigerant pressure is right ?

No

Check refrigerant pressure
and adjust.

YES

Is the compressor right ?

Check resistance

Between U-V, V-W, U-W port.
→ Short / Open circuit
(Comp.motor coil error)
→ normal : 1 ~2 Ω

Between U,V,W and Body
°Ê normal : over10M Ω

U

V

No

W

Ω

YES

Inverter components in outdoor pcb assembly are
right ?

No

* 9K/12K Model
Check

Short of SPM3 pins (GND - P, U, V, W pin)
Direction of D01Z~D03Z, C08Z,10Z,12Z,16Z
Assembling state of R01P ~ R21P & IC01P
Assembling state of screw between INV-IC &

Heat-sink

DC 15V output of Power module.

* 18K Model
Check

Short of SPM2 pins (GND –

Direction of D01Z~D03Z, C08Z,10Z,12Z,16Z
Assembling state of R01P ~ R21P & IC01P
Assembling state of screw between INV-IC &

Heat-sink

DC 15V output of Power module.

P, U, V, W pin)

62 Room Air Conditioner

Troubleshooting Guide

Error code

Description Cause of error

Over current Error

7

Check flow

Supplied voltage to
Outdoor pcb is about
AC 220/240V ?

No

Check power source

YES

(CT2)

YES

• Supplied power is not normal

• Indoor/outdoor fan is locked

• Too much refrigerant

• Defect in current sensing circuit in outdoor pcb assembly

Does indoor / outdoor fan work
normally ?

No

Check indoor / outdoor fan and
adjust.

YES

Refrigerant pressure is right ?

No

Check refrigerant pressure
and adjust.

Current sensing circuit is right ?

No

Check current sensing circuit.

- check CT is damaged in outdoor pcb
(output wire is disconnected to pin or not)

- BD01N is inserted in right position
(refer marking on pcb and component)

- Spec of R01N (1kΩ), R02N (1.65kΩ) is correct

- Direction of diode (D01N, D02N) is right

Service Manual 63

Troubleshooting Guide

Error code

8

Description Cause of error

Indoor fan is locked

(BLDC fan model only)

• Indoor fan is locked or separated

• Fan connector is not connected to indoor pcb assembly

• Defective in DC-fan driving circuit

Check flow

YES

Indoor fan is rotating ? (1) Indoor fan is rotating ? (2)

No

Check indoor unit

- remove obstacles in
indoor unit

fan assembled correctly.

-

Check soldering state of
CN-Motor1 & assembling
state of DC Fan connector

No

YES

DC–fan driving circuit is right ?

No

Check DC Fan Driving circuit
(Soldering state & Direction)

- R01F~R09F, C01F~C03F,
IC01F~IC03F, Q01F~Q02F, ZD01F

Error code

9

Description Cause of error

Outdoor fan is locked

(BLDC fan model only)

• Outdoor fan is locked by an obstacle (ex : branch of tree, bar…etc)

• Fan connector is not connected to outdoor pcb assembly

• Defective in DC-fan driving circuit

Check flow

YES

Outdoor fan is rotating ? (1) Outdoor fan is rotating ? (2)

No

Check outdoor unit

- remove obstacles in
outdoor unit

Check connector is not
connected to outdoor pcb
assembly (CN-FAN2)

No

YES

DC–fan driving circuit is right ?

No

Check DC Fan driving circuit
(Soldering state & Direction)

- R01F~R05F, C01F~C03F,
Q01F~Q04F, ZD01F

64 Room Air Conditioner

Troubleshooting Guide

Error code

Description Cause of error

D-Pipe TH. is short or

10

open

Check flow

D_PIPE TH. is connected to
Outdoor pcb assembly ?

No

Connect to CN-D_PIPE
in outdoor pcb assembly

• D_pipe TH. is short or open

• D_pipe TH. is not connected to the outdoor pcb assembly

• Damage or defect on the sensing circuit of outdoor pcb assembly

YES

D_PIPE TH. is right ?

No

Check D_PIPE TH.

- Measure resistance of TH.
(about 200kΩ at 25°C.)

YES

Sensing circuit of outdoor
pcb is right ?

No

- Check soldering state of
R07H, R08H, C04H

Service Manual 65

Wiring Diagram

Schematic Diagram

Indoor Unit

Models: AS-W0964DH0, AS-W0964GH0

Models:AS-W1264DH0, AS-W1865DH0, AS-W1264GH0, AS-W1224DH0, AS-W1424DH0, AS-W1825DH0

Schematic Diagram

66 Room Air Conditioner

Schematic Diagram

Outdoor Unit

Models: AS-W0964DH0, AS-W0964GH0

Models: AS-W1264DH0, AS-W1264GH0, AS-W1224DH0, AS-W1424DH0

Service Manual 67

Schematic Diagram

Models: AS-W1865DH0, AS-W1825DH0

68 Room Air Conditioner

Schematic Diagram

Components Location

• TOP VIEW

• BOTTOM VIEW

Indoor Unit

Models: AS-W1264DH0, AS-W1865DH0, AS-W1264GH0, AS-W1224DH0, AS-W1424DH0, AS-W1825DH0

Service Manual 69

• BOTTOM VIEW

• TOP VIEW

Schematic Diagram

Models: AS-W0964DH0, AS-W0964GH0

70 Room Air Conditioner

• TOP VIEW

Schematic Diagram

• BOTTOM VIEW

Outdoor Unit

Models: AS-W0964DH0, AS-W1264DH0, AS-W0964GH0, AS-W1264GH0, AS-W1224DH0, AS-W1424DH0

PCB : 6870A90055M_1(040221)
Assy : 6871A10128

2004.02.21.

C09S

R03S

-

IGBT

R05S

D01S

IC02S

SPM3:6002EC2005C
SPM3:6002EC2005D

C05S

C06S

IC01S

R06S

D01Z

R13Z

D02Z

C08Z

C10Z

1

R14Z

D03Z

C12Z

R15Z

21

22

C16Z

CN-FAN1/PUMP

CN-4WAY

CN-PUMP

RY-PUMP

CT

+

-

C01N

C01S

CN-PC

CN-TH2

C01HC04H

GND

IC01A

C02A
R02Y
D01Y

R03Y
C01Y

5V

OJ01

OSC01B

MICOM

IC02M

C05H

CN-S/VALVE1

CN-LEV

CN-COIL1

J09~12(JAPAN)

J09
J10
J11
J12

J13~15(EUROPE)

J13
J16
J14
J15

RY-H/PUMP RY-4WAY

C01M

J05~08(JAPAN)

J08

J07

J05

BD02S

~

~

R02S

R01S

BD01S

~

+

-

+

~

J01~04(EUROPE)

J01
J02
J03
J04

C03S

J06

CN-COIL2

C02S

C19Z

SPM3

5

R20Z

9

R21Z

R22Z

20

13

17

BL-V

RD-U

YL-W

15

11

R16Z

25 2623

24

27

CN-FAN2

C07D

POWER MODULE

5

6

R04P

R23Z

87 13

L1

C06D

R02D

R21P

R14P

R13P

R11P

R03P

R01P

R12P

R02P

C05D

C03F

CN-D_PIPE

CN-TH1

R01Y

1

3

129

C03H C02H

C02F

ZD01F

R05F

C01C

R01D

C04D

C03D

C01D

D01D

L2

EEPROM

IC01D

C02D

R17P

R15P

R16P

CN-S/VALVE2

T1

3

1

J33

+

~

4

-

~

~

D01N

BD01N
D01C

R01N

R02N

C03C

D02N

R07C

GND

LED01M

TXD

7

~

RY_PWR

BD01C

4

R04C

R02C

R03C

C02C

R01C

Q01C

R05C

R06C

D02C

D02K

ZD02K

15V

ZD01K

R10K

C04K

C03K

IC01K

ZD03K

IC02K

RXD

R02F

D03K

R09K

R08K

D01K

R06K

R07K

R05K

C09J

RD

CN-TEST

WCN-NOISE2

PTC

J34

J32

J31

ZNR01J

NF01J

J27~34(JAPAN)

J29

J28

J27

J30

C08J

3

C06J

C07J

N/F02J

J24

J23

J22

J26

J21

J20

J19

J18

J17

C04J

J25

R02J

R03J

C05J

R01J

WCN-NOISE1

ZNR02J

SURGE

FUSE

C02J

C01J

BK

WCN-NOISE3

C10J

WH

J27

J30

J28

J29

J34

C08J

C06J

C07J

WCN-NOISE1

J25

J24

J26

R03J

R02J

C05J

R01J

ZNR02J

SURGE

C02J

WH

J20

J22

J23

J21

J19

N/F02J

C04J

ZNR01J

NF01J

C10J

C01J

BK

WCN-NOISE3

CN-4WAY

CN-OXY2

R01C

D01K

R07K

WCN-NOISE2

T1

+

BD01C

R04C

R02C

R03C

D01C

C02C

Q01C

C03C

R05C

D02C

R06C

D02K

ZD02K

ZD01K

R10K

C04K

C03K

R01K

16

IC01K

ZD03K

1

R04K

C08S

IC02K

R05K

R02F

D03K

C09J

CN-TEST

RD

CT

+

RY-OXYRY-4WAY

BD01N

R01N

D01N

R02N

C01N

D02N

R07C

CN-PC

CN-TH2

C01H

IC01A

LED01M

R03A

R01M

R02M

OSC01B

IC01M

C04C

C07S

R08S

R07S

R02K

C18Z

R02X

R01X

C01F

R01F

C01K

C02K

IC02M

CN-S/VALVE1

C02H

R02A

R02H

C02A

OJ01

R04M

R03M

C02N

R17H

R02Y

C01A

R01A

D01Y

C01B

1

17

C01X

C01T

C06P

33

R19P

C05H

R18P

CN-LEV

J32

J31

J33

RY_PWR

R08C

J18

J17

R09K

R08K

R06K

FUSE

CN-FAN1/PUMP

RY-H/PUMP

J09

J10
J11
J12

C01S

C03H

R01H

R04H

R03H

R03N

C01C

MICOM

1

64

64

C07P

C08P

49

Q01F

R20P

Q03F

CN-S/VALVE2

J13
J16
J14

J15

CN-D_PIPE

CN-TH1

C04H

C02F

R07H

R04F

R06H

R05H

R08H

R03F

Q04F

R03Y

ZD01F

R05F

C01Y

Q02F

C01L

EEPROM

C04D

R02L

R01L

R10Z

R12Z

R08Z

IC01D

R11Z

R09Z

R07Z

C01M

CN-COIL1

R01D

C03D

C02D

J06

J08

J05

J07

C02S

C03F

CN-FAN2

R01Y

315

6

POWER MODULE

12 13

89

7

D01D

C01D

L1

L2

R16P

R02D

C05D

R15P

R17P

BD01S

CN-COIL2

J01
J02
J03
J04

C19Z

C07D

R04P

C04P

C06D

R08P

C05P

1917 2011 13

YL-W

R23Z

BL-V

RD-U

R21P

R14P

27

R01P

R12P

R02P

R10P

C02P

R06P

R07P

IC01P

BD02S

C09S

C03S

R01S

R02S

SPM3

8

5

9

15

R20Z

R21Z

R22Z

R16Z

25

R03P

R11P

C01P

R09P

R05P

C11Z

24 26

2322

R13P

C15Z

C03P

C04Z

R04Z

C06Z

C05Z

R05Z

R03S

IGBT

R05S

C05S

D01S

C06S

IC02S

IC01S

R06S

C07Z

C08Z

D01Z

1

C09Z

R13Z

C10Z

D02Z

R14Z

D03Z

SPM3

C12Z

R15Z

R17Z

C17Z

C13Z

C14Z

R01Z

C01Z

R18Z

21

R19Z

R03Z

C02Z

C03Z

R02Z

C16Z

R06Z

Service Manual 71

Schematic Diagram

• TOP VIEW

• BOTTOM VIEW

Models: AS-W1865DH0, AS-W1825DH0

BD02S

~

~

-

R03S

C09S

D01S

R05S

C06S

C05S

IC01S

R06S

C08Z

R13Z

C10Z

R14Z

C12Z

R17Z

R16Z

IGBT

R02S

R01S

C10S

23
22

21
20

19
18

17
16
15

14
13

12
11
10R15Z

9
8
7
6
5
4
3
2
1

SPM2

C16Z

BD01S

WCN-CAP2 WCN-CAP1

CN-4WAY

JS21~23

RY-4WAY

Y

C05D

P/NO

RY-L

C03S

R02D

C06D

D01D

L1

L2

15V

R01D

C01D

EEPROM

C02D

GND

1A20349

: 687

R17P

R15P

R16P

+

~

+

~

-

C01S

CN-COIL2

5

6

IPM

3

P

987

W

YL-W

V

BL-V

U

RD-U

Nw

Nv

R04P

Nu

25
24

C18Z

R01P

R11P
R12P

R02P

R03P

CN-COIL1

C02S

C07D

POWER MODULE

1

13

12

IC02S

PWB P/NO : 6870A90148A(030509)

PWB ASS

R14P

R21P

R13P

CN-FAN1

CT

RY-H

T1

3

4

1

7

C04S

CN-FAN2

C03F

IC01D

C03D

C04D

MICOM

OSC01B

CN-LEV

C05H

C02F

R05F

R02F

ZD01F

CN-TH1

1

CN-D_PIPE

C04H

IC01A

LED01M

CN-TEST

CN-TH2

1

C03H

C02H

C01N

OJ01

C02A

CN-PC

C08J

C07J

PTC

3

RY-PWR

BD01C

C03C

-+

D01C

R04C

R01Y

R03C

R07C

R02C

R02Y

D01Y

R03Y

C01Y

1

C01H

RXD

TXD

C01C

C02C

Q01C

R01C

IC01K

ZD03K

IC02K

R05K

R07K

R06K

D03K

BK(WCN-NOISE4)

JS11~15

NF02J

C09J

JS16~20

4

NF01J

BD01N

+

-

R01N

R05C

R02N

R06C

D01N

D02C

D02N

JS01~05

C03K

C04K

JS24~25

D02K

R10K

ZD01K

ZD02K

D01K

R08K

NF03J

R09K

JS26~27

C11J

BK(WCN-NOISE1)

C01J

FUSE

RD

C06J

C05J

C04J

BK(WCN-NOISE3)

JS06~10

BK(WCN-NOISE2)

C02J

C03J

SURGE

R01J

ZNR01J

ZNR02J

BR

BL

NF02J

C06J

C05J

C04J

R03J

C02J

C01J

C03J

R02J

SURGE

R01J

ZNR01J

ZNR02J

FUSE

C08J

R04J

C09J

C07J

PTC

T1

C04S

RY-PWR

BD01C

NF01J

C04K

JS24~25

NF03J

JS26~27

C03C

BD01N

R01N

R02N

D01N

D02N

C03K

D02K

R10K

ZD02K

D01K

R08K

R09K

C11J

D01C

R05C

R06C

R04C

D02C

R07C
C01C

Q01C

IC01K

ZD01K

ZD03K

IC02K

R05K

R07K

R06K

D03K

R01Y

R03C

R02C

R02Y

C02C

D01Y

R01C

R03Y

C01Y

CN-TH2

R02H

R03H

R01H

R04H

C02H

C01H

R01K

R02K

R04K

C01N

C01K

C02K

Q03F

Q04F

R04F

R01F

C01F

R03F

C02F

R05H

R06H

0J01

R17H

CN-PC

Q02F

Q01F

ZD01F

R05F

R02F

CN-TH1

CN-D_PIPE

R07H

R08H

C03H

C04H

R03N

R03M

R04M

C02N

R02M

C01A

C02A

IC01A

R03A

LED01M

R01M

CN-TEST

C05H

CN-FAN1

WCN-CAP2

CT

RY-H

WCN-CAP1

RY-4WAY

RY-L

C03S

CN-FAN2

R02D

C05D

C06D

D01D

L1

C03F

L2

IC01D

C03D

C04D

MICOM

64

1

R02A

OSC01B

R01A

IC01M

IC02M

R01X

R02X

C01X

CN-LEV

C01D

R01D

EEPROM

C02D

C01T

R12Z

C06Z

R19Z

R01L

C01L

C07S

R10Z

R09Z

R11Z

C05Z

C04Z

C02Z

R03Z

R06Z

R05Z

R02Z

C03Z
C07P

R18P

R19P

R20P

R10P

C08P

C06P

R08P

R06P

C18Z

R20Z

C05P

C17Z

R16P

R15P

R17P

CN-4AWY

JS21~23

CN-COIL1

C02S

C07D

POWER MODULE

R02L C08S

R08S

R07S

IC02S

R07Z

R08Z

C01Z

R04Z

R01Z

R14P

C04P

R21P

C01P

IC10P

C03P R09P

BD01S

CN-COIL2

P

W

V

U

Nw

Nv

R04P

Nu

24

C18Z

R01P

R11P

R05P

R12P

C02P

R02P

R07P

R13P

R03P

BD02S

R03S

C09S

C01S

IGBT

R02S

R01S

C20Z

SPM2

D01S

R05S

C06S

C05S

C10S

1

IC01S

R06S

D01Z

C08Z

23

C07Z

D02Z

C10Z

C09Z

D03Z

C12Z

C11Z

R15Z

R18Z

R17Z

C13Z

R16Z

C14Z

C15Z

72 Room Air Conditioner

Schematic Diagram

DISPLAY ASSEMBLY

– 6871A20574A

– 6871A20624A

Service Manual 73

Product Specifications

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)

1,758 1,143 2,755
1,512 983 2,369
6,000 3,100 9,400
2,637 3,516 5,274
2,268 3,024 4,536
9,000 12,000 18,000
3,033 4,043 6,096
2,608 3,478 5,242

10,350 13,800 20,800

1,465 879 1,406
1,260 756 1,210
5,000 3,000 4,800
3,296 4,043 6,065
2,835 3,478 5,216

11,250 13,800 20,700

3,810 4,659 6,651
3,276 4,007 5,720

13,000 15,900 22,700

-- -

-- ­690 970 1,640
910 1,120 1,680

-- -

-- -

3.4 4.2 7

4.2 5.1 8

-- -

-- -

3.4 4.2 7.5

4.2 5.1 8.5

3.29 3.29 2.8

13.04 13.04 10.98

3.12 3.12 3.11

10.36 12.32 12.32

3.82 3.82 3.22

3.62 3.61 3.61

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

97 97 97

7.2(254) 8.7(307) 13.0(459)
26(918) 26(918) 42(1483)

1.4(2.94) 1.5(3.2) 2.12
38 40 42
35 37 ­29 31 36
48 49 55

810(26.5) 845(28.5) 1200(40.8)

16:3*1.0 16:3*1.0 12:3*2.5
16:4*1.0 16:4*1.0 12:4*2.5

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

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

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

21.5,16.0(0.85,0.63) 21.5,16.0(0.85,0.63) 21.5,16(0.85,0.63)
758*260*160 758*260*160 758*260*160

29.8*10.2*6.3 29.8*10.2*6.3 29.8*10.2*6.3
770*540*245 770*540*245 770*540*245

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

9(20) 9(20) 13.5(30)

38(83.8) 38(83.8) 60(132.3)

AS-W0964DH0
AS-W0964GH0

AS-W1264DH0
AS-W1264GH0

AS-W1865DH0

Product Specifications

74 Room Air Conditioner

Table-2

Buyer Models

Item Unit

Min. kcal/h.(W)

Btu/h.

Cooling Capacity Type kcal/h.(W)

Btu/h.

Max. kcal/h.(W)

Btu/h.

Min. kcal/h.(W)

Btu/h.

Heating Capacity Type kcal/h.(W)

Btu/h.

Max. kcal/h.(W)

Btu/h.

Power Input Cooling W

Heating W

Running Current Cooling A

Heating A

Starting Current Cooling A

Heating A
Cooling kcal/hW

EER Btu/h.W

Heating kcal/hW

Btu/h.W

COP Cooling W/W

Heating W/W
Power Supply Ø,V,Hz
Power Factor %
Air Circulation Indoor,Max m3/min(CFM)

Outdoor,Max m3/min(CFM)
Moisture Removal µP/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)
Dimension Indoor mm
(W*H*D) inch

Outdoor mm

inch

980(1,140) 989(1,150) 1,548(1,800)

3,890 - 6,142

3,024(3,517) 3,528(4,102) 4,536(5,274)

12,000 14,000 18,000

3,474(4,040) 3,732(4,340) 4,987(5,800)

13,800 14,810 19,790

757(880) 765(892) 1,204(1,400)

3,003 3039 4,777

3,478(4,043) 3,780(4,396) 5,242(6,096)

13,800 15,000 20,800

4,007(4,660) 4,119(4,790) 5,761(6,700)

15,900 16,344 22,861

1,100 1,320 1,600
1,120 1,300 1,685

5.0 5.9 7.0

5.1 5.8 8.0

5.0 6 7.5

5.5 7.1 8.5

2.75 2.67 2.84

10.91 10.61 11.25

3.11 2.91 3.11

12.32 11.54 12.34

3.20 3011 3.30

3.61 3.38 3.62

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

97 97 97

8.7(307) 8.7(307) 13.0(459)
26(918) 26(918) 42(1483)

1.5(3.2) 1.5(3.2) 2.12

40 40 42
37 37 ­29 29 36
49 49 55

845(28.5) 915 1200(40.8)

16:3*1.0 16:3*1.0 12:3*2.5
16:4*1.0 16:4*1.0 12:4*2.5

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

12.7(1/2) 12.7(1/2) 12.7(1/2)

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

21.5,16.0(0.85,0.63) 21.5,16(0.85,0.63) 21.5,16(0.85,0.63)
758*260*160 758*260*160 1090*300*178

29.8*10.2*6.3 29.8*10.2*6.3 42.9*11.8*7.0
770*540*245 770*540*245 870*655*320

30.3*21.3*9.6 30.3*21.3*9.6 34.3*25.8*12.6

AS-W1224DH0 AS-W1424DH0 AS-W1825DH0

Service Manual 75

Exploded View

Exploded View

135301

152302

342800

264110

263230

359011

131410 733010

135312

135311

159901

268712

146811

668713

346810

266090

135516

35211B

354210

249951

268714

267110

Indoor Unit

76 Room Air Conditioner

Exploded View

Outdoor Unit

Models: AS-W0964DH0, AS-W1264DH0AS-W0964GH0, AS-W1264GH0, AS-W1224DH0, AS-W1424DH0

(UL Chassis)

554031

435511

552202

552116

552201

554160

561410

552111

550140

552203-1

552203-2

430410

649950

552102

437210

435301

559010

546810

658740

447910

263230-1

263230-2

668711

Service Manual 77

Exploded View

554031

437212

263230-1

435511

552202

567502

552116

554160

561410

550140

552203-1

552203-2

430410

649950

552102

559010

546810

447910

263230-2

Models: AS-W1865DH0, AS-W1825DH0 (UE Chassis)

78 Room Air Conditioner

Replacement Parts List

Replacement Parts List

Parts List (Indoor)

LOCATION

DESCRIPTION

PART No.

REMARKS

No.

131410 CHASSIS ASSEMBLY 3141A20019C 3141A20019C 3141A20020B
135311 GRILLE ASSEMBLY,DISCHARGE 3531A10307A 3531A10307A 3531A20252A
135312 GRILLE ASSEMBLY,FRONT 3531A14002D 3531A14002B 3531A20253K
135516 COVER ASSEMBLY,MOTOR 3551A20156A 3551A20156A 3551A20154A
146811 MOTOR ASSEMBLY,STEP 4681A20055A 4681A20055A 4681A20055A
152302 FILTER(MECH),A/C 5230A20051A 5230A20051A 5230A20052A
159901 VANE,HORIZONTAL 5990A20048A 5990A20048A 5990A20049A
249951 CONTROL BOX ASSEMBLY 4995A20495B 4995A20495A 4995A20495C
263230 THERMISTOR ASSEMBLY 6323A20004A 6323A20004A 6323A20004A
264110 POWER CORD ASSEMBLY 6411A20013E 6411A20013E 6411A20014Z
266090 H.V ASSEMBLY 6609A10003Z 6609A10003Z ­267110 REMOTE CONTROLLER 6711A20077Y 6711A20077Y 6711A20077Y
268712 PWB(PCB) ASSEMBLY,DISPLAY 6871A20574A 6871A20574A 6871A20624A
268714 PWB(PCB) ASSEMBLY 6871A20675A 6871A20156A 6871A20156B
342800 BEARING 4280A20004B 4280A20004B 4280A20004A
346810 MOTOR ASSEMBLY,INDOOR 4681A20151B 4681A20091J 4681A20091J
354210 EVAPORATOR ASSEMBLY,FIRST 5421A20218A 5421A20218A 5421A20220A
359011 FAN ASSEMBLY,CROSS FLOW 5901A20017F 5901A20017F 5901AR2441E
733010 PLATE ASSEMBLY,INSTALL 3301A20011A 3301A20011A 3301A20002A
35211B TUBE ASSEMBLY,TUBING 5211A21363A 5211A21363B 5211A21378C
W0CZZ CAPACITOR,DRAWING 3H01487K - -

AS-W0964DH0 AS-W1264DH0 AS-W1865DH0

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

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

Service Manual 79

Replacement Parts List

Parts List (Indoor)

LOCATION

DESCRIPTION

PART No.

REMARKS

No.

131410 CHASSIS ASSEMBLY 3141A20019C 3141A20019C 3141A20019C 3141A20019E 3141A20020B
135311 GRILLE ASSEMBLY,DISCHARGE(INDOOR) 3531A10307A 3531A10307A 3531A10307J 3531A10307P 3531A20252H
135312 GRILLE ASSEMBLY,FRONT(INDOOR) 3531A14003C 3531A14003D 3531A14002R 3531A14002R 3531A20253S
135314 GRILLE ASSEMBLY,INLET 3531A10339B 3531A10339B 3531A10312D 3531A10312D 3531A20254E
135516 COVER ASSEMBLY,MOTOR 3551A20156B 3551A20156B 3551A20156B 3551A20156B 3551A20154A
146811 MOTOR ASSEMBLY,STEP 4681A20055A 4681A20055A 4681A20055A 4681A20055A 4681A20055A
152302 FILTER(MECH),A/C 5230A20051A 5230A20051A 5230A20051A 5230A20051A ­159901 VANE,HORIZONTAL 5990A20048A 5990A20048A 5990A20048A 5990A20048A 5990A20049A
249951 CONTROL BOX ASSEMBLY,INDOOR 4995A20495B 4995A20495A 4995A20495E 4995A20495F 4995A20495D
263230 THERMISTOR ASSEMBLY 6323A20004A 6323A20004A 6323A20004A 6323A20004A 6323A20004A
264110 POWER CORD ASSEMBLY 6411A20013E 6411A20013E 6410A20007E 6410A20007E 6410A20007F
266090 H.V ASSEMBLY 6609A10003Z 6609A10003Z 6609A10003Z 6609A10003Z 6609A10003Z
267110 REMOTE CONTROLLER ASSEMBLY 6711A20077Y 6711A20077Y 6711A20124A 6711A20124A 6711A20124A
268712 PWB(PCB) ASSEMBLY,DISPLAY 6871A20574A 6871A20574A 6871A20574A 6871A20574A 6871A20624A
268714 PWB(PCB) ASSEMBLY,MAIN 6871A20675A 6871A20156A 6871A20156D 6871A20156C 6871A20156B
342800 BEARING 4280A20004B 4280A20004B 4280A20004B 4280A20004B 4280A20004A
346810 MOTOR ASSEMBLY,INDOOR 4681A20151B 4681A20091J 4681A20091J 4681A20091J 4681A20091J
354210 EVAPORATOR ASSEMBLY,FIRST 5421A20218A 5421A20218A 5421A20218A 5421A20218A 5421A20220A
359011 FAN ASSEMBLY,CROSS FLOW 5901A20017F 5901A20017F 5901A20017F 5901A20017F 5901AR2441E
733010 PLATE ASSEMBLY,INSTALL 3301A20011A 3301A20011A 3301A20011A 3301A20011A 3301A20002A
35211B TUBE ASSEMBLY,TUBING 5211A21363A 5211A21363B 5211A21363B 5211A21363B 5211A21378C
W0CZZ CAPACITOR,DRAWING 3H01487K - - - -

AS-W0964GH0 AS-W1264GH0 AS-W1224DH0 AS-W1424DH0 AS-W1825DH0

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

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

80 Room Air Conditioner

Replacement Parts List

Parts List (Outdoor)

263230 THERMISTOR ASSEMBLY 6323A20003G 6323A20003G ­430410 BASE ASSEMBLY,OUTDOOR 3041A20066A 3041A20066A 3041A20022Q
435301 GRILLE,DISCHARGE 3530A20006B 3530A20006B 3530A20007B
435511 COVER ASSEMBLY,CONTROL 3551A30115G 3551A30115G 3551A30102A
437210 PANEL ASSEMBLY,FRONT 3721A20027Q 3721A20027Q 3721A20005H
437212 PANEL ASSEMBLY,REAR - - 3720AP0003D
447910 BARRIER ASSEMBLY,OUTDOOR 4791A30002G 4791A30002G 2H02110G
546810 MOTOR ASSEMBLY,OUTDOOR 4681A20068G 4681A20122A 4681A20028K
550140 ISOLATOR,COMP 4984AR4387A 4H00982E 4H00982E

552102 TUBE,CAPILLARY BEND 5210A21447E 5210A31380D
552102-1 TUBE,CAPILLARY BEND 5210A21447M - ­552102-2 TUBE,CAPILLARY BEND 5210A33068B - -

552111 TUBE ASSEMBLY,CAPILLARY 5211A21393C 5211A21393B -

552116 TUBE ASSEMBLY,REVERSING 5211A10466B 5211A10466C 5211A21140B

552201 VALVE,CHECK 3H01552F 3H01552F -

552202 VALVE,REVERSING 5220AR3228D 5220AR3228D 5220AR3228E

554031 CONDENSER ASSEMBLY 5403A20019V 5403A20019V 5403A21012B

554160 COMPRESSOR 5416A90045A 5416A90029A 5416A90024A

559010 FAN ASSEMBLY,PROPELLER 5901A10033A 5901A10033A 1A00195B

561410 COIL ASSEMBLY,REVERSING 6141A20010S 6141A20010S 6141A20010H

649950 CONTROL BOX ASSEMBLY, OUTDOOR 4995A21006H 4995A21006J 4995A20346F

668711

PWB(PCB) ASSEMBLY, MAIN(OUTDOOR)

6871A10128P 6871A10128Q 6871A20349F
552203-1 VALVE,SERVICE 5220A20005B 5220A20005B 5220A20006A
552203-2 VALVE,SERVICE 5220A20001Q 5220A20006F 2H02479F

W0CZZ CAPACITOR,DRAWING - 0CZZA90002N 3H00611R

LOCATION

DESCRIPTION

PART No.

REMARKS

No.

AS-W0964DH0 AS-W1264DH0 AS-W1865DH0

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

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

Service Manual 81

Replacement Parts List

Parts List (Outdoor)

263230-1 THERMISTOR ASSEMBLY 6323A20001C 6323A20001C 6323A20001C 6323A20001C 6323A20001B
263230-2 THERMISTOR ASSEMBLY 6323A20003G 6323A20003G 6323A20003G 6323A20003G 6323A20003C

430410 BASE ASSEMBLY,OUTDOOR 3041A20066A 3041A20066A 3041A20066A 3041A20066A 3041A20022Q
435301 GRILLE,DISCHARGE 3530A20006G 3530A20006G 3530A20006G 3530A20006G 3530A20007B
435511 COVER ASSEMBLY,CONTROL(OUTDOOR) 3551A30115G 3551A30115G 3551A30115G 3551A30115G 3551A30102A
437210 PANEL ASSEMBLY,FRONT(OUTDOOR) 3721A20027Q 3721A20027Q 3721A20027Q 3721A20027Q 3721A20005H
437212 PANEL ASSEMBLY,REAR(OUTDOOR) 3721A20026M 3721A20026M 3721A20026M 3721A20026M 3720AP0003D
447910 BARRIER ASSEMBLY,OUTDOOR 4791A30002G 4791A30002G 4791A30002G 4791A30002G 2H02110G
546810 MOTOR ASSEMBLY,OUTDOOR 4681A20068G 4681A20122A 4681A20122A 4681A20122A 4681A20028L

550140 ISOLATOR,COMP 4984AR4387A 4H00982E 4H00982E 4H00982E 4H00982E
552102-1 TUBE,CAPILLARY BEND 5210A21447M 5210A21447E 5210A21447E 5210A21447E 5210A31380D
552102-2 TUBE,CAPILLARY BEND 5210A33068B 5210A33068A 5210A33068A 5210A33068A 5210A31380E

552111 TUBE ASSEMBLY,CAPILLARY 5211A21393C 5211A21393B 5211A21393B 5211A21393E -

552116 TUBE ASSEMBLY,REVERSING 5211A10466B 5211A10466C 5211A10466C 5211A10466D 5211A21140B

552201 VALVE,CHECK 3H01552F 3H01552F 3H01552F 3H01552F 5220A30004A

552202 VALVE,REVERSING 5220AR3228D 5220AR3228D 5220AR3228D 5220AR3228D 5220AR3228E

554031 CONDENSER ASSEMBLY,BENT 5403A20019V 5403A20019V 5403A20019V 5403A20019V 5403A21012B

554160 COMPRESSOR 5416A90045A 5416A90029A 5416A90029A 5416A90029A 5416A90024A

559010 FAN ASSEMBLY,PROPELLER 5901A10033A 5901A10033A 5901A10033A 5901A10033A 1A00195B

561410 COIL ASSEMBLY,REVERSING VALVE 6141A20010S 6141A20010S 6141A20010S 6141A20010S 6141A20010H

649950 CONTROL BOX ASSEMBLY,OUTDOOR 4995A21006H 4995A21006J 4995A21006M 4995A21006N 4995A20346H
552203-1 VALVE,SERVICE 5220A20005B 5220A20005B 5220A20005B 5220A20005B 5220A20006A
552203-2 VALVE,SERVICE 5220A20001Q 5220A20006F 5220A20006F 5220A20006F 2H02479F

668711 PWB(PCB) ASSEMBLY, MAIN 6871A10128P 6871A10128Q 6871A10128U 6871A10128V 3871A20349G

W0CZZ CAPACITOR,DRAWING 0CZZA90002M 0CZZA90002N 0CZZA90002N 0CZZA90002N 0CZZA90002N

LOCATION

DESCRIPTION

PART No.

REMARKS

No.

AS-W0964GH0 AS-W1264GH0 AS-W1224DH0 AS-W1424DH0 AS-W1825DH0

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

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

P/No.: 3828A20462G

May, 2005

Printed in Korea