LG 456394, CT12, CT24, MT24AH, CT18 Manual

OWNER’S MANUAL

AIR CONDITIONER

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

TYPE : 4-WAY CEILING CASSETTE

KZ.O.02.0561

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.

www.lg.com

DUTCH PORTUGUÊS ΕΛΛΗΝΙΚΆ DEUTSCH FRANÇAIS ESPAÑOL ITALIANO ENGLISH

P/NO : MFL67163901

Ceiling CassetteType Air Conditioner Owner’s Manual

TABLE OF CONTENTS

A. Safety Precautions......................................	3
B. Product Introduction...................................	6
Name and function of parts ...........................	6
What to do before operation..........................	6
Operation Indication Lamps...........................	6
Wired Remote Controller...............................	7
Wireless Remote Controller (Accessory).......	8
Standard Operation - Standard Cooling ........	9
C. Operating instructions................................	9
Standard Operation - Heating Mode............	10
Standard Operation - Power Cooling...........	10
Standard Operation -
Dehumidification Mode................................	11
Auto Changeover Mode...............................	11
Standard Operation - Fan Mode..................	12
Standard Operation - Auto
Operation Mode...........................................	13
Standard Operation - Airflow Setting...........	14
Standard Operation - Temperature
Setting/Room Temperature Check..............	15
Sub function - Plasma Purification...............	16
Function setting - Child Lock .......................	17
Function Setting - Change Temp.................	18
Function setting - Elevation Grill..................	19
Function setting - Filter Sign Clear ..............	20
Function setting - Vane Angle Control.........	21
Function setting - Changing Current Time..22
Programming - Simple Reservation.............	24
Programming : Weekly Reservation............	25
Programming - Sleep Reservation ..............	27
Programming - ON Reservation ..................	28
Programming - OFF Reservation ................	30
Programming : Holiday Reservation............	32
Ventilation Kit Control(Optional) ..................	33
D. Maintenance and Service .........................	34
Indoor Unit...................................................	34
Purifying filter(Optional)...............................	35
Operation Tips!............................................	36
When the air conditioner is not going.... ......	36
Troubleshooting Tips! Save time and
money!.........................................................	37
Call the service immediately in the following
situations .....................................................	37

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

■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.

2 Ceiling Cassette-Type Air Conditioner

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.

WARNING	This symbol indicates the possibility of death or serious injury.
CAUTION	This symbol indicates the possibility of injury or damage.

ENGLISH

Always ground the product.

•There is a risk of electric shock.

For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center. Do not disassemble or repair the product by yourself.

•There is risk of fire or electric shock.

Use the correctly rated breaker or fuse.

•There is risk of fire or electric shock.

Do not install the product on a defective installation stand. Be sure that the installation area does not deteriorate with age.

•It may cause product to fall.

WARNING

Do not use a defective or underrated circuit breaker. Use the correctly rated breaker and fuse.

•There is risk of fire or electric shock .

Always ground the product as per the wiring diagram. Do not connect the ground wire to gas or water pipes lightening rod or telephone ground wire.

•There is risk of fire or electric shock.

Do not use a multi consent. Always use this appliance on a dedicated cicuit and breaker.

•Otherwise it can cause electric shock or fire.

Install the panel and the cover of control box securely.

•There is risk of fire or electric shock due to dust , water etc.

Do not modify or extend the power cable.	For installation, removal or reinstall ,
If the power cable or cord has scrathes or	always contact the dealer or an
skin peeled off or deteriorated then it	Authorized Service Center.
must be replaced.
• There is risk of fire or electric shock.	• There is risk of fire, electric shock, explosion,
	or injury.
Never install the outdoor unit on a	When the product is soaked (flooded or
moving base or a place from where it	submerged) in water , contact an
can fall down.	Authorized Service Center for repair
	before using it again.
• The falling outdoor unit can cause damage or	• There is risk of fire or eletric shock.
injury or even death of a person.

Be sure to check the refrigerant to the	Don't use a power cord, a plug or a loose
used. Please read the label on the product.	socket which is damaged.

•Incorrect refrigerant used can prevent the normal operation of the unit.

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

•There is risk of fire and electric shock.

•Otherwise it may cause a fire or electrical shock.

Do not allow water to run into electric parts. Install the unit away from water sources.

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

Do not touch , operate, or repair the product with wet hands. Hold the plug by hand when taking out

•There is risk of electric shock or fire.

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

•There is risk of fire.

Owner's Manual 3

Safety Precautions

Indoor/outdoor wiring connections must be secured tightly and the cable should be routed properly so that there is no force pulling the cable from the connection terminals.

•Improper or loose connections can cause heat generation or fire.

In outdoor unit the step-up capacitor supplies high voltage electricity to the electrical components. Be sure to discharge the capacitor completely before conducting the repair work.

•An charged capacitor can cause electrical shock.

Safely dispose off the packing materials. Like screws, nails, batteries, broken things etc after installation or svc and then tear away and thraw away the plastic packaging bags.

•Children may play with them and cause injury.

When installing the unit, use the installation kit provided with the product.

Make sure to check that the power cable plug is not dirty, loose or broken and then only insert the plug completely.

•Dirty, loose or broken power plug can cause electric shock or fire.

Be sure to use only those parts which are listed in the svc parts list. Never attempt to modify the equipment.

• Otherwise the unit may fall and cause severe	• The use of inappropriate parts can cause an
injury.	electrical shock, excessive heat generation or
	fire.

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

•Oxygen deficiency could occur and hence harm your health.

Do not open the front grille 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.

If strange sounds, smell or smoke comes from product.Immediately turn the breaker off or disconnect the power supply cable.

• There is risk of electric shock or fire.

Ventilate the product room from time to	Turn the main power off and unplug the
time when operating it together with a	unit when cleaning or repairing the
stove, or heating element etc.	product.
• Oxygen deficiency can occur and hence harm	• There is risk of electric shock.
your health.
Take care to ensure that nobody	Take care to ensure that power cable
especially kids could step on or fall onto	could not be pulled out or damaged
the outdoor unit.	during operation.
• This could result in personal injury and	• There is risk of fire or electric shock.
product damage.

When the product is not to 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.

Do not place ANYTHING on the power cable.

•There is risk of fire or electric shock.

Do not plug or unplug the power supply plug to turn the unit ON/OFF .

• There is risk of fire or electric shock.

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.

Two or more people must lift and transport the product.

•Avoid personal injury.

Keep level even when installing the product.

•To avoid vibration or noise.

CAUTION

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

•It may cause corrosion on the product.

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

•It may cause a problem for your neighbors and hence dispute.

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

•A bad connection may cause water leakage.

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

•Low refrigerant levels may cause failure of product.

4 Ceiling Cassette-Type Air Conditioner

		Safety Precautions
Do not use the product for special purposes,	Do not block the inlet or outlet of air flow.	Use a soft cloth to clean. Do not use
such as preserving foods, works of art, etc. It		harsh detergents, solvents or splashing
is a consumer air conditioner, not a precision		water etc .
refrigeration system.
• There is risk of damage or loss of property.	• It may cause product failure.	• There is risk of fire, electric shock, or damage
		to the plastic parts of the product.
Do not touch the metal parts of the	Do not step on or put anyting on the	Always insert the filter securely after
product when removing the air filter.	product. (outdoor units)	cleaning. Clean the filter every two weeks
		or more often if necessary.
• There is risk of personal injury.	• There is risk of personal injury and failure of	• A dirty filter reduces the efficiency.
	product.

Do not insert hands or other objects	Be cautious when unpacking and
through the air inlet or outlet while the	installing the product.
product is operating.
• There are sharp and moving parts that could	• Sharp edges could cause injury.
cause personal injury.
Do not tilt the unit when removing or	Do not mix air or gas other than the
uninstalling it.	specified refrigerant used in the system .
• The condensed water inside can spill .	• If air enters the refrigerant system, an
	excessively high pressure results, causing
	equipment damage or injury.

If the refrigerant gas leaks during the repair, do not touch the leakaing refrigerant gas.

•The refrigernat gas can cause frostbite (cold burn)

If the refrigerant gas leaks during the installation, ventilate the area immediately.

•Otherwise it can be harmfull for your health.

Dismantling the unit, treatment of the refrigerant oil and eventual parts should be done in accordance with local and national standards.

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.

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 product failure.

If you eat the liquid from the batteries, brush your teeth and see doctor.

Do not use the remote if the batteries have leaked.

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

Do not recharge or disassemble the batteries. Do not dispose off batteries in

afire.

•They may burn or explode.

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.

ENGLISH

Do not expose your skin or kids or plants to the cool or hot air draft.

• This could harm to your health.

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, maintaining or repairing the product at an height.

• Be careful and avoid personal injury.

Owner's Manual 5

Product Introduction

Product Introduction

Name and function of parts

6 7

2

1 5 44

3

8

1:Indoor unit

2:Outdoor unit

3:Remote controller

4:Inlet air

5:Discharge air

6:Refrigerant piping, connection electric wire

7:Drain pipe

8:Ground wire

Wire to ground outdoor unit to prevent electrical shocks.

What to do before operation

Pair system or simultaneous operation system

If your installation has a customized control system, ask your LG dealer for the operation that corresponds to your system.

1: Unit with remote controller

2: Unit without remote controller (when

used as simultaneous operation)

Multi system

Operation Indication Lamps

			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.(Heat pump model only)
•			Forced	: To operate the unit when the remote control can't be used
				for any reason.

6 Ceiling Cassette-Type Air Conditioner

Product Introduction

Wired Remote Controller

	1
	10
	9
	8	2
		3
	7
		4
	11
	12	5
	13	6
	14
	15

Please attach the inform label inside of the door. Please choose proper language depend on your country.

1OPERATION INDICATION SCREEN

2 SET TEMPERATURE BUTTON

3 FAN SPEED BUTTON

4 ON/OFF BUTTON

5OPRATION MODE SELECTION BUTTON

6WIRELESS REMOTE CONTROLLER RECEIVER

•Some products don't receive the wireless signals.

7 AIR FLOW BUTTON

8 SUBFUNCTION BUTTON

9 FUNCTION SETTING BUTTON

10VENTILATION BUTTON

11RESERVATION

12UP,DOWN,LEFT,RIGHT BUTTON

•To check the indoor temperature, press button.

13ROOM TEMPERATURE BUTTON

14SETTING/CANCEL BUTTON

15EXIT BUTTON

Some functions may not be operated and displayed depending on the product type.

NOTE

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.

The actual product can be different from above contents depending upon model type.

When using simultaneous operation system, whenever press remote controller button, system will approximately operate after 1~2 minutes.

ENGLISH

Owner's Manual 7

Product Introduction

Wireless Remote Controller (Accessory)

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.

PQWRHDF0

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)

NOTE

The wireless remote controller do not operate the vane angle control.(4Way Type)

For more details refer to the Wireless Remote Control Accessory manual.

The actual product can be different from above contents depending upon model type.

The wireless remote controller does not operate When using simultaneous operation system.

8 Ceiling Cassette-Type Air Conditioner

Operating Instructions

Operating instructions

Standard Operation - Standard Cooling

It cools the room by comfortable and clean wind.

1 Pressindoor. button to turn on the

2 Press button to select Cooling operation mode.

3 Adjust the desired temperature by pressing buttons. Press button to check the Room temperature.

When setting the desired temperature higher than room temperature, only ventilation wind is blow out instead of cooling wind.

Setting Temp Range : 18˚C~30˚C (64˚F~86˚F)

ENGLISH

Owner's Manual 9

Operating Instructions

Standard Operation - Power Cooling

It makes the room cool using pleasant and fresh air quickly

1 Pressindoor. button to trun on the

2 Press button to select cooling operation mode.

3 Press button continuously until 'Po' displayed.

	What is Power Cooling?
	• Desired temperature: Po (actually 18°C)	It make room temperature
	• Wind flow: power wind
		} drop fast by running
	• Wind direction: fix to air-cooling position

Partial product has no power air-cooling function.

Standard Operation - Heating Mode

It supplies warm wind to the indoor

1 indoor.Press		button to turn on the
2	Press	button to select
	Heating mode.
	(To check the indoor temperature,
	press the room temperature button.)
	Adjust the desired temperature
3 by pressing			buttons.

When setting the desired temperature lower than room temperature, there is only ventilation wind.

•Heating drive only operates at the cooling and heating model.

•Heating doesn't operate at cooling exclusive model.

10 Ceiling Cassette-Type Air Conditioner

Operating Instructions

Standard Operation - Dehumidification Mode

It removes humidity while air-cooling weakly.

1 Pressindoor. button to turn on the

2	Press	button to select
	Dehumidification mode.
	The temperature setting can not be
	adjusted during operation this mode.
	Press the	button to select

3 airflow rate feeble → weak → medium → strong → automatic. (The initial wind powerfulness of humidity removal drive is 'weak'.)

•In rainy season or high humidity climate, it is possible to operate simultaneously dehumidifier and cooling mode to remove humidity effectively.

•The menu item of wind powerfulness might not be partially selected according to the product.

ENGLISH

Auto Changeover Mode

1 Press		button to turn on the indoor.

2 Press button to select Auto Changeover Mode.

3The setting temperature as the right side picture can be set in both cooling/ heating model.

Setting Temp Range : 18˚C~30˚C.

Owner's Manual 11

Operating Instructions

Standard Operation - Fan Mode

It blows the air as it is in the indoor, not the cold wind.

1 Pressindoor. button to turn on the

2 PressMode. button to select Fan

3 Every time pressing button, you can select wind flow in order of feeble → weak → medium → strong → automatic.

When running ventilation, compressor of AHU doesn't work.

•Ventilation drive does not release cool wind but general fan

•Because it releases the wind that has no temperature difference from the room, it functions to circulate the inside air.

•The menu item of wind powerfulness might not be partially selected according to the product.

12 Ceiling Cassette-Type Air Conditioner