LG LTNC246PLF3 Owner’s Manual

AIR

CONDITIONER

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

TYPE : Highlander Ceiling Cassette Air Conditioner

For single cassette export models

MFL62865705

P/No. : MFL62865705_v2

www.lg.com

Ceiling Cassette Air Conditioner Owner’s Manual

TABLE OF CONTENTS

FOR YOUR RECORDS

Safety Precautions.........................	3	Write the model and serial numbers here:
		Write the model and serial numbers here:
		Model #

Prior to Operation	8	Serial #

		You can find them on a label on the side of each unit.
		You can find them on a label on the side of each unit.
		Dealer's Name

Introduction	9	Date Purchased

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

Electrical Safety ...........................	10
Operating Instructions.................	11
Maintenance and Service ............	66

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 Air Conditioner

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.

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage.

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

Be sure not to do.

Be sure to follow the instruction.

n Installation

Do not use a defective or	For electrical work, contact	Always ground the product.
underrated circuit breaker.	the dealer, seller, a qualified
Use this appliance on a	electrician, or an Authorized
dedicated circuit.	Service Center.

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

• There is risk of fire or electric shock.

Install the panel and the	Always install a dedicated	Use the correctly rated
cover of control box	circuit and breaker.	breaker or fuse.
securely.

• There is risk of fire or electric	• Improper wiring or installation
shock.	may cause fire or electric shock

•There is risk of fire or electric shock.

Owner's Manual 3

Safety Precautions

Do not modify or extend the	Do not install, remove, or	Be cautious when unpacking
power cable.	re-install the unit by yourself	and installing the product.
	(customer).

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

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

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	Be sure the installation area
defective installation stand.	does not deteriorate with age.
• It may cause injury, accident, or	• If the base collapses, the air
damage to the product.	conditioner could fall with it,
	causing property damage,
	product failure, and personal
	injury.

n Operation

Do not let the air conditioner run for a	Take care to ensure that power	Do not place anything on
long time when the humidity is very high	cable could not be pulled out or	the power cable.
and a door or a window is left open .	damaged during operation.
• Moisture may condense and wet	• There is risk of fire or electric	• There is risk of fire or electric
or damage furniture.	shock.	shock.

Do not plug or unplug the	Do not touch(operate) the	Do not place a heater or
power supply plug during	product with wet hands.	other appliances near the
operation.		power cable.

•There is risk of fire or electric shock.

•There is risk of fire or electrical shock.

•There is risk of fire and electric shock.

4 Ceiling Cassette Air Conditioner

		Safety Precautions
Do not allow water to run	Do not store or use flammable	Do not use the product in a
into electric parts.	gas or combustibles near the	tightly closed space for a
	product.	long time.

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

•There is risk of fire or failure of product.

• Oxygen deficiency could occur.

Gas	oli	n

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

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.

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.

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

•There is risk of fire or electric shock.

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.

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	Turn the main power off when cleaning or
operating it together with a stove, etc.	maintaining the product.
• There is risk of fire or electric shock.	• There is risk of electric shock.

Owner's Manual 5

Safety Precautions

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.

n Installation

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

•Low refrigerant levels may cause failure of product.

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.

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

•A bad connection may cause water leakage.

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

• Avoid personal injury.

Keep level even when installing the product.

•To avoid vibration or water leakage.

90°

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.

n 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.

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Safety Precautions

Do not block the inlet or	Use a soft cloth to clean.
outlet of air flow.	Do not use harsh
	detergents, solvents, etc.
• It may cause product failure.	• There is risk of fire, electric shock,
	or damage to the plastic parts of
	the product.

	ax	Thinner
	W

Do not step on or put	Always insert the filter securely.
anyting on the product.	Clean the filter every two weeks
(outdoor units)	or more often if necessary.
• There is risk of personal injury	• A dirty filter reduces the efficiency
and failure of product.	of the air conditioner and could
	cause product malfunction or
	damage.

Do not drink the water	Use a firm stool or ladder
drained from the product.	when cleaning or
	maintaining the product.
• It is not sanitary and could cause	• Be careful and avoid personal
serious health issues.	injury.

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 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.

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.

Owner's Manual 7

Prior to Operation

Preparing for operation

1.Contact an installation specialist for installation.

2.Plug in the power plug properly.

3.Use a dedicated circuit.

4.Do not use an extension cord.

5.Do not start/stop operation by plugging/unplugging the power cord.

6.If the cord/plug is damaged, replace it with only an authorized replacement part.

Usage

1.Being exposed to direct airflow for an extended period of time could be hazardous to your health. Do not expose occupants, pets, or plants to direct airflow for extended periods of time.

2.Due to the possibility of oxygen deficiency, ventilate the room when used together with stoves or other heating devices.

3.Do not use this air conditioner for non-specified special purposes (e.g. preserving precision devices, food, pets, plants, and art objects). Such usage could damage the items.

Cleaning and maintenance

1.Do not touch the metal parts of the unit when removing the filter. Injuries can occur when handling sharp metal edges.

2.Do not use water to clean inside the air conditioner. Exposure to water can destroy the insulation, leading to possible electric shock.

3.When cleaning the unit, first make sure that the power and breaker are turned off. The fan rotates at a very high speed during operation. There is a possibility of injury if the unit’s power is accidentally triggered on while cleaning inner parts of the unit.

Service

For repair and maintenance, contact your authorized service dealer.

8 Ceiling Cassette Air Conditioner

Introduction

Symbols used in this Manual

This symbol alerts you to the risk of electric shock.

This symbol alerts you to hazards that could cause harm to the air conditioner.

NOTICE This symbol indicates special notes.

Features

WARNING: This appliance should be installed in accordance with national wiring regulations. This guide acts as a guide to help to explain product features.

	Anti-
	Anti-bacteria
Air Outlet
Air Inlet
Wired	Wireless
Remote	Remote
Controller	Controller
(Optional)	(Standard)

Owner's Manual 9

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

2 Defrost Mode : Lights up during defrost mode or hot start operation. (heat pump model only)

: Lights up during timer operation.

: Receives the signal from remote control (signal receiving sound: two short beeps and one long beep)

: Lights up after 2400 hours from the time of first operation. : Lights up during system operation.

Operation Indication Lamps

Outdoor Unit

5 Filter Sign

6 On/Off

3 Timer

4 Signal Receptor

Operating Instructions

Indoor Unit, Outdoor Unit

Anti-

Anti-bacteria

Air Outlet

Air Inlet

Wired Remote	Wireless Remote Controller
Controller (Optional)	(Standard)

1	2	3	4	5	6

Air Intake	Connecting Wire
(side, rear)	Power Wire
	Power Wire
Air Outlet
Vents	Connection Tube
	Connection Tube
	Drain Hose

Cooling model: Cassette Type Air Conditioner for cooling

Owner's Manual 11

Operating Instructions

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Wireless Remote Controller (Standard)

**Heat Pump functions are optional, not applicable for Cooling only Model.

Owner's Manual 13

Operating Instructions

Installer Setting - How to enter installer setting mode

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Operating Instructions

Installer Setting - Installer Setting Code Table

Owner's Manual 15

Operating Instructions

Installer Setting - Setting Address of Central Control

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Operating Instructions

Cooling Mode

Owner's Manual 17

Operating Instructions

Auto Operation Mode

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Operating Instructions

Dehumidification Mode

Owner's Manual 19

Operating Instructions

Fan Mode

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Operating Instructions

Temperature Setting/Room Temperature Checking

Owner's Manual 21

Operating Instructions

Airflow Setting

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Operating Instructions

Plasma Purification (Optional)

Owner's Manual 23

Operating Instructions

Individual vane angle control

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Operating Instructions

Timer

Owner's Manual 25

Wide LCD Wired Remote Controller (Optional)

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Owner's Manual 27

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Installation instruction

3.Please fix remote controller upper part into the setup board attached to the surface of the wall, as the picture below, and then, connect with setup board by pressing lower part.

-Please connect not to make a gap at the remote controller and setup board?s upper and lower, right and left part.

When separating remote controller from setup board, as the picture below, after inserting into the lower separating hole using screw driver and then, spinning clockwise, remote controller is separated.

- There are two separating holes. Please individually separate one at a time.

- Please be careful not to damage the inside components when separating.

Wall				Wall
Wall				Wall
Side				Side

Wall				Wall


Side				Side

4. Please connect indoor unit and remote controller using connection cable.

Please check if connector is normally connected.

Indoor

Unit side

Connecting cable

5.Please use extension cable if the distance between wired remote controller and indoor unit is more than 10m.

CAUTION

When installing the wired remote controller, do not bury it in the wall. (It can cause damage in the temperature sensor.)

Do not install the cable to be 50m or above. (It can cause communication error.)

•When installing the extension cable, check the connecting direction of the connector of the remote controller side and the product side for correct installation.

•If you install the extension cable in the opposite direction, the connector will not be connected.

•Specification of extension cable: 2547 1007 22# 2 core 3 shield 5 or above.

Owner's Manual 29

Installation instruction

Group control

1.When installing more than 2 units of air conditioner to one wired remote controller, please connect as the right figure.

•If it is not event communication indoor unit, set the unit as slave.

•Check for event communication through the product manual.

GND

Signal wire

12V

GND Signal wire

When controlling multiple indoor units with event communication function with one remote controller, you must change the master/slave setting from the indoor unit.

-Indoor units, the master/slave configuration of the product after completion of indoor unit power ?OFF? and then ?ON? the power after 1 minutes elapsed sign up.

-For ceiling type cassette and duct product group, change the switch setting of the indoor PCB.

1 2 3 4 5 6 7 8

#3 switch OFF: Master (Factory default setting)

1 2 3 4 5 6 7 8

#3 switch ON: Slave

-For wall-mount type and stand type product, change the master/slave setting with the wireless remote controller. (Refer to wireless remote controller manual for detail)

When installing 2 remote controllers to one indoor unit with event communication function, set the master/slave of the remote controller. (Refer to remote controller master/slave selection)

When controlling the group, some functions excluding basic operation setting, fan level Min/Mid/Max, remote controller lock setting and time setting may be limited.

2.When installing more than 2 wired remote controllers to one air conditioner, please connect as the right picture.

•When installing more than 2 units of wired remote controller to one air conditioner, set one wired remote controller as master and the others all as slaves, as shown in the right picture.

•You cannot control the group as shown in the right for some products.

•Refer to the product manual for more detail.

GND
Signal wire				GND
12V				Signal wire
				Signal wire
				12V


B	Y	R	B Y R

MASTER SLAVE

•When controlling in groups, set the master/slaver of the remote controller. Refer to Installer setting section on how to set master/slave for more detail.

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