LG LTNH186ELE1 Owner’s Manual

website http://www.lgservice.com

LG

LG Ceiling Cassette

Air Conditioner

OWNER'S MANUAL

Prior to installation, this air-conditioning unit must be submitted for approval by the utility service which provides electricity.

IMPORTANT

•Please read this owner's manual carefully and thoroughly before installing and operating your room air conditioner.

•Please retain this owner's manual for future reference after reading it thoroughly.

P/No.: 3828A22005U

Ceiling Cassette Air Conditioner Owner’s Manual

TABLE OF CONTENTS

Safety Precautions.........................	3
Prior to Operation ..........................	8
Introduction ....................................	9
Electrical Safety ...........................	10
Operating Instructions.................	11
Maintenance and Service ............	30

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 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.

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage.

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

Be sure not to do.

Be sure to follow the instruction.

■ 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.

Install the panel and the cover of control box securely.

• 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 install a dedicated circuit and breaker.

Always ground the product.

•There is risk of fire or electric shock.

Use the correctly rated breaker or fuse.

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

Owner's Manual 3

Safety Precautions

Do not modify or extend the power cable.

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

•There is risk of fire or electric shock.

•There is risk of fire, electric 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 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 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.

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

•There is risk of fire or electric shock.

■ Operation

Take care to ensure that power	Do not place anything on
cable could not be pulled out or	the power cable.
damaged during operation.
• There is risk of fire or electric	• There is risk of fire or electric
shock.	shock.

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

•There is risk of fire or electrical shock.

4 Ceiling Cassette Air Conditioner

Safety Precautions

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.

Gasolin

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.

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

• Oxygen deficiency could occur.

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 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.

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.

hose to	Keep level even when
is drained	installing the product.
.
may cause	• To avoid vibration or water
	leakage.

	90°
people to	Do not install the product
the	where it will be exposed to sea
	wind (salt spray) directly.
injury.	• 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 Ceiling Cassette Air Conditioner

Do not block the inlet or outlet of air flow.

• It may cause product failure.

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

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

Do not drink the water drained from the product.

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

Use a soft Do not use detergents,

•There is risk of or damage to the the 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.

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

•Be careful and avoid 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

Prior to Operation

Preparingforoperation

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.

Cleaningandmaintenance

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

Introduction

SymbolsusedinthisManual

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.

Heat Pump Model

	Air	Anti-bacteria
		Signal Receptor
	Intake	Cooling Model
	Air Outlet
		Remote
		Controller
		Signal Receptor

Owner's Manual 9

Electrical Safety

Electrical Safety

WARNING: This appliance must be properly grounded.

To minimize the risk of electric shock, you must alway plug into a grounded oulet.

Preferred method

Ensure proper ground exists before use

WARNING: Do not cut or remove the grounding prong from the power wire.

WARNING: Attaching the adapter ground terminal to the wall receptacle cover screw does not ground the appliance unless the cover screw is metal and not insulated, and the wall receptacle is grounded through the house wiring.

WARNING: If you have any doubt whether the air conditioner is properly grounded, have the wall receptacle and circuit checked by a qualified electrician.

10 Ceiling Cassette Air Conditioner

Operating Instructions

Operating Instructions

IndoorUnit,OutdoorUnit

Indoor Unit

Heat Pump Model

Anti-bacteria

Air

Intake

Air Outlet

Remote

Controller

Signal Receptor

Receives the signals from the remote control.

(Signal receiving sound: two short beeps or one long beep.)

Signal Receptor

Cooling Model

Signal Receptor

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. (Refer to page 28.)
			Timer	: Lights up during Timer operation.
			Defrost Mode	: Lights up during Defrost Mode or Hot Start operation.
				(Heat pump model only)
			Outdoor Unit	: Lights up during outdoor unit operation.
			Operation	(Cooling model only)
			Forced	: Operation procedures when the remote control
			Operation	can't be used.

Owner's Manual 11

Operating Instructions

NameandFunctionofRemoteController

1

14

2

3

4

AUTO SWING

OPERATION

SET TEMP

FAN SPEED

SUB FUNCTION

Room Temp

HI

AUTO

Heater

Preheat

MED

JET

Defrost

Humidify

LO

SLo

Filter

Out door

2ndF

Time

ZONE

1 2 3 4

Timer

Operation unit

No Func

Program set

On Off

Set no. Time

01

03

05 07

09 11 13

15 17

19

21

23

Timer Cancel 2ndF

Program Week Holiday

PLASMA

Set/Clr

RESET

Hour Min

1.Operation indication screen

2.Swirl button

3.2nd F button

4.Timer set/cancel Program/Week/Holiday

5Hour/Min/Set/Clr/Ventilator

65. Set temperature button

76. ON/OFF button

	8	7.	Fan operation
		8.	Operation mode selection button
	9

109. Fan speed button

1110. Horizontal/Vertical air flow

12direction button

1311. Room temperature/Filter sign release button

12.Plasma/Heater button(Option)

13.Time reset button

14.Operation lamp

12 Ceiling Cassette Air Conditioner

Operating Instructions

WirelessRemoteController(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.

Signal transmitter

5 1 6

3

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.

	4
	2	CANCEL
	7
		ON OFF SET
	11
	8
	13
	14

10	7. ON/OFF TIMER BUTTONS
	Used to set the time of starting and stopping operation.

98. TIME SETTING BUTTONS

Used to adjust the time.

12 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

15Used to set Sleep Mode Auto operation.

11.AIR CIRCULATION BUTTON

Used to circulate the room air without cooling or heating.

Flip-up door (opened)

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.

The wireless remote controller does not operate the swirl mode and super low fan speed.

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)

Owner's Manual 13

Operating Instructions

SettheCurrentTimeandadayoftheWeek

1	Press the '	' button.

Hour

Each time the button is pressed, the number is changed from 00 to 23.

You can set the number of the current hour.

AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION

Time

2	Press the '	' button.

Min

Each time the button is pressed, the number is increased from 00 to 59.

You can set the number of the current minute.

AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION

Time

3 Press ' Week ' button.

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

Week	AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION
	Time

4 Press the ' RESET ' button.

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

AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION

RESET

14 Ceiling Cassette Air Conditioner

Operating Instructions

WeeklyProgramSetting

Press the Program button.
1 The remote controller is displayed like below. Then '		Program set	', '			' and '01' is blinked.
Program		AUTO SWING	OPERATION			SET TEMP			FAN SPEED			SUB FUNCTION
						Program set
		Time 01	03	05	07	09	11	13	15	17	19	21	23
Week
Press the '	' button.
2 Select the Monday.
Week		AUTO SWING	OPERATION			SET TEMP			FAN SPEED			SUB FUNCTION
						Program set
		Time 01	03	05	07	09	11	13	15	17	19	21	23

3 Change the timer setting until the desired time is set. After you select a time, push the SET/CLR button once or one more time.

For Example if the air-conditioner is turned on from 6 to 8 and from 13 to 22 and turned off at other time monday, display is as follows. (black bar indicates turn-on, white bar indicates turn-off.)

If you follow the above procedure, you can set timer for turning or and off in all of the week.

SET/CLR

AUTO SWING		OPERATION			SET TEMP			FAN SPEED			SUB FUNCTION
Time	01	03	05	07	09	11	13	15	17	19	21	23

4 If you don't set the weekly program again after setting the weekly program, it is same the previous setting. If you want to keep the weekly program for only a week follow the next procedure.

1)Press the "CANCEL" button and "SET/CLR" button simultaneously. Then the display will be toggled like before.

AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION		AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION

2)Detach your finger from buttons at the moment that it is displayed the figure. Then the weekly program is kept for only one week.

Owner's Manual 15

Operating Instructions

HolidaySetting

If Tuesday is a holiday in this week, you may set a holiday.

AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION

Program

Press the Program button.

Week

Press the Week button. Select the Tuesday.

Program set

Time	01	03	05	07	09	11		13	15	17	19	21	23
AUTO SWING		OPERATION			SET TEMP				FAN SPEED			SUB FUNCTION
					Program set
Time	01	03	05	07	09	11		13	15	17	19	21	23

Holiday

Press the Holiday button.

Then the remote controller will be displayed ' '. The outside rectangular means holiday.

You cannot set the weekly program for a holiday.

AUTO SWING		OPERATION			SET TEMP				FAN SPEED			SUB FUNCTION
Time	01	03	05	07	09	11		13	15	17	19	21	23

TimerSetting(Delaystart/Pre-setstop)

This function is used to turn on or turn off after several hours.

Cancel

Press the Timer button to turn Timer on or off.

Change the timer setting until the desired time is set.

Cancel

If you want to cancel the timer setting, press the Cancel button.

AUTO SWING

OPERATION

SET TEMP

FAN SPEED

SUB FUNCTION

• When the air conditioner is turned off, the air conditioner

is turned on after 8 hours.

Timer

On

Time 01

03

05

07

09

11

13

15

17

19

21

23

AUTO SWING

OPERATION

SET TEMP

FAN SPEED

SUB FUNCTION

•When the air conditioner is turned on, the air conditioner is turned off after 5 hours.

Timer

Off

Time

01

03

05

07

09

11

13

15

17

19

21

23

Self-diagnosisFunction

' CH' will flash in the remote controller display when a problem occurs. Then please contact your dealer.

16 Ceiling Cassette Air Conditioner

	Operating Instructions
Operation Mode
Cooling Mode	Cooling Mode
Soft Dry Mode	Soft Dry Mode
Heating Mode	Auto Mode
	(Cooling Model)
Auto Mode
(Heat Pump Model)
Operation Procedure

1st
		On/Off Button

2nd Operation Mode Selection Button

3rd Room Temperature Setting Button

4th Indoor Fan Speed Selection Button

AUTO SWING

OPERATION

SET TEMP

FAN SPEED

SUB FUNCTION

Room Temp

HI

AUTO

Heater

Preheat

MED

JET

Defrost

Humidify

LO

SLo

Filter

Out door

2ndF

Time

ZONE

1 2 3 4

Timer

Operation unit

No Func

Program set

On Off

Set no. Time

01

03

05 07

09 11 13

15 17

19

21

23

Timer Cancel 2ndF

Program Week Holiday

PLASMA

Set/Clr

RESET

Hour Min

3

1

2

4

Owner's Manual 17

Operating Instructions

CoolingOperationMode

1 Press the On/Off Button.

2 Select Cooling Operation.

Press the Operation Mode Selection Button.

Each time the button is pressed, the operation mode is shifted in the arrow direction.

HEAT PUMP MODEL

Cooling Operation	Soft Dry Operation		Heating Operation		Auto Operation
COOLING MODEL
Operation Display
AUTO SWING OPERATION SET TEMP FAN SPEED	SUB FUNCTION	AUTO SWING OPERATION SET TEMP	FAN SPEED SUB FUNCTION	AUTO SWING OPERATION	SET TEMP FAN SPEED SUB FUNCTION
HI					AUTO
			LO
Cooling Operation		Soft Dry Operation		Auto Operation

3 Set the temperature lower than the room temperature.

AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION				• The temperature can be set
		HI		within a range of 18°C ~ 30°C
				by 1°C .

To increase the Temperature.

To decrease the Temperature.

4 Set the fan speed.

•Select the fan speed in six steps-high, auto, power jet, super low, low, medium.

•The display shows high fan speed.

•Each time the button is pressed, the fan speed mode is shifted.

During Cooling operation, pressing the fan speed button can be changed Jet Cool operation mode.(Refer to p26.)

18 Ceiling Cassette Air Conditioner

Operating Instructions

SoftDryOperationMode

This mode dehumidifies without overcooling.

1 Press the On/Off Button.

2 Select Soft Dry Operation.

Press the operation Mode Selection Button.

Each time the button is pressed, the operation mode is shifted in the arrow direction.

HEAT PUMP MODEL

Cooling Operation

Soft Dry Operation

Heating Operation

Auto Operation

COOLING MODEL

Operation Display

AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION		AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION		AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION
HI				AUTO
		LO

Cooling Operation

Soft Dry Operation

Auto Operation

3 During Dry Operation.

•The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of already being set to the best speed for Dry Operation by Micom Control.

Owner's Manual 19

Operating Instructions

HeatingOperationMode(Heatpumpmodelonly)

1 Press the On/Off Button.

2 Select Heating Operation.

Press the Operation Mode Selection Button.

Each time the button is pressed, the operation mode is shifted in the arrow direction.

Cooling Operation

Soft Dry Operation

Heating Operation

Auto Operation

3 Set the temperature higher than the room temperature.

AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION				• The temperature can be set
		HI		within a range of 16°C~30°C
				by 1°C.

To increase the Temperature.

To decrease the Temperature.

4 Set the fan speed.

•Select the fan speed in five steps-high, auto, super low, low, medium.

•The display shows high fan speed

•Each time the button is pressed, the fan speed mode is shifted.

5 This air-conditioner is set to the hot start control in order not to discharge the cold air during the heating operation. This time, the remote controller indicates ‘Preheat’.

AUTO SWING OPERATION SET TEMP FAN SPEED			SUB FUNCTION
		HI		Preheat

6 If the outdoor temperature is too low during the heating operation, this air-conditioner is set to the defrosting operation and the remote controller indicates ‘Defrost’.

AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION

HI

Defrost

20 Ceiling Cassette Air Conditioner