LG MT36AH, MT18AH, MT10AH, MT24AH, MT12AH User Manual

OWNER’S MANUAL

AIR CONDITIONER

Please read this manual carefully before operating
your set and retain it for future reference.

P/NO : 3828A20394D

www.lg.com

TYPE : CASSETTE

The equipment complies with requirements of the Technical
Regulation, in terms of restrictions for the use of certain dangerous
substances in electrical and electronic equipment.

ENGLISH

ITALIANO

ESPAÑOL FRANÇAIS DEUTSCH

2 Multi-Type Air Conditioner

Mutli- Type Air Conditioner Ownerʼs Manual

TABLE OF CONTENTS

FOR YOUR RECORDS

Write the model and serial numbers here:

Model #

Serial #

You can find them on a label on the side of each unit.

Dealer's Name

Date Purchased

n

Staple your receipt to this page in the event you need it
to prove date of purchase or for warranty issues.

READ THIS MANUAL

Inside you will find many helpful hints on how to use and
maintain your air conditioner properly. Just a little
preventive care on your part can save you a great deal
of time and money over the life of your air conditioner.

You'll find many answers to common problems in the
chart of troubleshooting tips. If you review our chart of

Troubleshooting Tips first, you may not need to call for
service at all.

PRECAUTION

• Contact the authorized service technician for repair or
maintenance of this unit.

• Contact the installer for installation of this unit.

• The air conditioner is not intended for use by young
children or invalids without supervision.

• Young children should be supervised to ensure that
they do not play with the air conditioner.

• When the power cord is to be replaced, replacement
work shall be performed by authorized personnel only
using only genuine replacement parts.

• Installation work must be performed in accordance
with the National Electric Code by qualified and
authorized personnel only.

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

Operating Instructions...........6

Maintenance and Service ....24

Safety Precautions

Owner's Manual 3

Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions
must be followed.
n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is

classified by the following indications.

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

WARNING

CAUTION

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage.

Be sure not to do.

Be sure to follow the instruction.

ENGLISH

WARNING

n Installation

Do not use a defective or
underrated circuit breaker.
Use this appliance on a
dedicated circuit.

• There is risk of fire or electric
shock.

For electrical work, contact
the dealer, seller, a qualified
electrician, or an Authorized
Service Center.

• Do not disassemble or repair the
product. There is risk of fire or
electric shock.

Always ground the product.

• There is risk of fire or electric
shock.

Install the panel and the
cover of control box
securely.

• There is risk of fire or electric
shock.

Always install a dedicated
circuit and breaker.

• Improper wiring or installation
may cause fire or electric shock

Use the correctly rated
breaker or fuse.

• There is risk of fire or electric
shock.

Do not modify or extend the
power cable.

• There is risk of fire or electric
shock.

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

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

Be cautious when unpacking
and installing the product.

• Sharp edges could cause injury.
Be especially careful of the case
edges and the fins on the
condenser and evaporator.

Safety Precautions

4 Multi-Type Air Conditioner

Do not allow water to run
into electric parts.

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

Do not store or use flammable
gas or combustibles near the
product.

• There is risk of fire or failure of
product.

Do not use the product in a
tightly closed space for a
long time.

• Oxygen deficiency could occur.

When flammable gas leaks,
turn off the gas and open a
window for ventilation
before turn the product on.

• Do not use the telephone or turn
switches on or off.
There is risk of explosion or fire

If strange sounds, or small or
smoke comes from product. Turn
the breaker off or disconnect the
power supply cable.

• There is risk of electric shock or
fire.

Stop operation and close the window
in storm or hurricane. If possible,
remove the product from the window
before the hurricane arrives.

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

Do not open the inlet grill of the
product during operation.
(Do not touch the electrostatic
filter, if the unit is so equipped.)

• There is risk of physical injury,
electric shock, or product failure.

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

• There is risk of fire or electric
shock.

Be cautious that water could
not enter the product.

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

Ventilate the product from time to time when
operating it together with a stove, etc.

• There is risk of fire or electric shock.

Turn the main power off when cleaning or
maintaining the product.

• There is risk of electric shock.

n Operation

For installation, always contact the
dealer or an Authorized Service Center.

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

Do not install the product on a
defective installation stand.

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

Be sure the installation area
does not deteriorate with age.

• If the base collapses, the air
conditioner could fall with it,
causing property damage,
product failure, and personal
injury.

Do not plug or unplug the
power supply plug during
operation.

• There is risk of fire or electric
shock.

Do not touch(operate) the
product with wet hands.

• There is risk of fire or electrical
shock.

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

• There is risk of fire and electric
shock.

Do not let the air conditioner run for a
long time when the humidity is very high
and a door or a window is left open

.

• Moisture may condense and wet
or damage furniture.

Take care to ensure that power
cable could not be pulled out or
damaged during operation.

• There is risk of fire or electric
shock.

Do not place anything on the
power cable.

• There is risk of fire or electric
shock.

When the product is not be used for a long
time, disconnect the power supply plug or
turn off the breaker.

• There is risk of product damage or failure, or
unintended operation.

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

• This could result in personal injury and product
damage.

Safety Precautions

Owner's Manual 5

ENGLISH

Do not block the inlet or
outlet of air flow.

• It may cause product failure.

Use a soft cloth to clean. Do
not use harsh detergents,
solvents, etc.

• There is risk of fire, electric shock,
or damage to the plastic parts of
the product.

Do not touch the metal parts of
the product when removing the
air filter. They are very sharp!

• There is risk of personal injury.

Do not step on or put
anyting on the product.
(outdoor units)

• There is risk of personal injury and
failure of product.

Always insert the filter securely.
Clean the filter every two weeks or
more often if necessary.

• A dirty filter reduces the efficiency
of the air conditioner and could
cause product malfunction or
damage.

Do not insert hands or other objects
through the air inlet or outlet while
the product is operated.

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

Do not drink the water
drained from the product.

• It is not sanitary and could cause
serious health issues.

Use a firm stool or ladder
when cleaning or
maintaining the product.

• Be careful and avoid personal
injury.

Replace the all batteries in the
remote control with new ones of
the same type. Do not mix old
and new batteries or different
types of batteries.

• There is risk of fire or explosion

Do not recharge or disassemble the batteries.
Do not dispose of batteries in a fire.

• They may burn or explode.

If the liquid from the batteries gets onto your
skin or clothes, wash it well with clean water. Do
not use the remote if the batteries have leaked.

• The chemicals in batteries could cause burns or other
health hazards.

n Installation

CAUTION

n Operation

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

• Low refrigerant levels may cause
failure of product.

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

• A bad connection may cause
water leakage.

Keep level even when
installing the product.

• To avoid vibration or water
leakage.

Do not install the product where the
noise or hot air from the outdoor unit
could damage the neighborhoods.

• It may cause a problem for your
neighbors.

Use two or more people to
lift and transport the
product.

• Avoid personal injury.

Do not install the product where
it will be exposed to sea wind
(salt spray) directly.

• It may cause corrosion on the
product. Corrosion, particularly on
the condenser and evaporator fins,
could cause product malfunction or
inefficient operation.

Do not expose the skin directly to cool air for
long periods of time.
(Don't sit in the draft.)

• This could harm to your health.

Do not use the product for special purposes, such as
preserving foods, works of art, etc. It is a consumer air
conditioner, not a precision refrigeration system.

• There is risk of damage or loss of property.

6 Multi-Type Air Conditioner

Operating Instructions

Operating Instructions

Indoor Unit

Cassette Type Indoor Unit

On/Off : Lights up during the system operation.

Filter Sign : Lights up after 2400 hours from the time of first operating unit.

Timer : Lights up during Timer operation.

Defrost Mode : Lights up during Defrost Mode or Hot Start operation.

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

Outdoor Unit : Lights up during outdoor unit operation.
Operation (Cooling model only)

Signal Receiver

Receives the signals from the remote control.
(Signal receiving sound: two short beeps or one long beep.)

Anti-bacteria filter

Air Intake

Air Outlet

Cover
display

Cover

Remote Controller

Signal Receiver

Heat Pump Model

Cooling Model

Signal Receiver

Anti-bacteriaAnti-bacteriaAnti-bacteria

Heat Pump Model

Cooling Model

Remote

Controller

Air Outlet

Air
Intake

Signal Receptor

Signal Receptor

Timer Cancel

Program Week

Hour Min

Holiday

Set/Clr

RESET

Plasma

ZONE

1234

Operation unit

Humidify

JET

AUTO

AUTO SWING OPERATION

FAN SPEED

Program set

SUB FUNCTION

SET TEMP

Room Temp

HI
MED
LO

Heater
Defrost
Filter

Preheat

Out door

Time

Timer

On
Set no. Time

Off

01 03 05 07 09 11 13 15 17 19 21 23

3

10

12

14
15

11

13

18

16

2

1

Heat Pump Model

Cooling Model

5

4

6

8
9

7

17

1Way

4Way,1Way(06 Model)

Owner's Manual 7

Operating Instructions

Name and Function of Remote Controller

Operation Display

Displays the operation conditions.

On/Off Button

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

Set Temperature Button

Used to set the temperature when the desired
temperature is obtained.

FAN Operation Button

Used to circulate room air without cooling or heating.

Fan Speed (Jet Cool Button: 4 Way)

Used to set the desired fan speed or select Jet cool
mode.

Operation Mode Selection Button

Used to select the operation mode.

• Auto Operation Mode

• Cooling Operation Mode

• Soft Dry Operation Mode

• Heating Operation Mode(except cooling model)

Auto Swing Button

Used To Swing Up And Down/ Right And Left(Option)

Room Temperature Checking Button/Filtersign
Release(Option)

Used to check the room temperature.

Plasma Air Clean Button(Option)/Heater(Option)

Timer Cancel Button

Used to cancel the timer.

Timer Set Button

Used to set the timer when the desired time is obtained.

Week Button

Used to set a day of the week.

Program Button

Used to set the weekly timer.

Holiday Button

Used to set a holiday of the week.

Time Set Button

Used to set the time of the day and change the time in
the weekly timer Function.

Set And Clean/Ventilation(Option)

Used to set and clear the weekly timer.

Swirl Button (4 Way)

Used to select swirl mode.

No Function(1 Way 06 Model)
Jet Cool Button(1 Way)

Reset Button

Used to set the current time and clear the setting time.

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

h Display temperature can be different from actual room temperature if the remote controller is

installed at the place where sun-rays are falling directly or the place nearby heat source.

h

Note : 1 Way '06 Model - AMNH09GTCC0, AMNH12GTCC0

ENGLISH

CST Type Remote Controller

8 Multi-Type Air Conditioner

Operating Instructions

Wireless Remote Controller (optional)

This air-conditioner is equipped with wired remote controller basically. But if you want to be available with
wireless remote controller, you pay for it.

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

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

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-purification function.

14. RESET BUTTON

Initialize remote controller.

15. 2nd F Button

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

CAUTION:

of handling the Remote Controller

• Aim at the signal receiver on the wired remote controller so as to operate.

• The remote control signal can be received at a distance of up to about 7m.

• Be sure that there are no obstructions between the remote controller and the signal receptor.

• Do not drop or throw the remote controller.

• Do not place the remote controller in a location exposed to direct sunlight, or near the heating unit, or
any other heat source.

• Block a strong light over the signal receptor with a curtain or etc. so as to prevent the abnormal
operation. (ex:electronic quick start, ELBA, inverter type fluorescent lamp)

h The wireless remote controller do not operate the swirl mode.

AUTO CLEAN

ON

OFF

CANCEL

SET

Flip-up door
(opened)

Signal transmitter

5

1

3

10

9

12

15

6

4

2
7

11

8

13

14

Owner's Manual 9

AUTO SWING

HI

ZONE

Operation unit Program set

Room Temp

MED
LO

AUTO
JET

Heater
Defrost
Filter

Preheat
Humidify
Out door

Timer

On
Set no. Time

Off

01 03 05 07 09 11 13 15 17 19 21 23

1234

OPERATION

FAN SPEED

SUB FUNCTION

SET TEMP

Time

AUTO SWING

HI

ZONE

Operation unit Program set

Room Temp

MED
LO

AUTO
JET

Heater
Defrost
Filter

Preheat
Humidify
Out door

Timer

On
Set no. Time

Off

01 03 05 07 09 11 13 15 17 19 21 23

1234

OPERATION

FAN SPEED

SUB FUNCTION

SET TEMP

Time

AUTO SWING

HI

ZONE

Operation unit Program set

Room Temp

MED
LO

AUTO
JET

Heater
Defrost
Filter

Preheat
Humidify
Out door

Timer

On
Set no. Time

Off

01 03 05 07 09 11 13 15 17 19 21 23

1234

OPERATION

FAN SPEED

SUB FUNCTION

SET TEMP

Time

AUTO SWING

HI

ZONE

Operation unit Program set

Room Temp

MED
LO

AUTO
JET

Heater
Defrost
Filter

Preheat
Humidify
Out door

Time

Timer

On
Set no. Time

Off

01 03 05 07 09 11 13 15 17 19 21 23

1234

OPERATION

FAN SPEED

SUB FUNCTION

SET TEMP

Hour

Min

Week

RESET

Operating Instructions

Set the Current Time and day of the Week

Unless you press any button about 5 (sometimes 10) seconds while setting function, the setting mode returns to
initial mode.

1

Press the ' ' button.

Each time the button is pressed, the number is changed from

to 23.

This number indicates current hour.

For example, if it is 14:25, press button 14 times.

2

Press the ' ' button.

Each time the button is pressed, the number increases from 00 to 59.
This number indicates current minute.

For example, if it is 14:25, press button 25 times.

3

Press ' ' button.

Each time the button is pressed, a day of the week is shifted from sunday to saturday.

For example, if today is Wed, press button 3 times.

4

Press the ' ' button.

If you want to confirm the current time and a day of the week, click the Reset button.

Hour

Hour

Min

Min

Week

Week

RESET

ENGLISH