LG AMNW12GTRA1 Owner's Manual

www.lg.com

Copyright © 2017 - 2020 LG Electronics Inc. All Rights Reserved.

MFL67655308

Rev.02_071420

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

4-WAY CEILING CASSETTE

OWNER’S MANUAL

AIR
CONDITIONER

ENGLISH

ESPAÑOL

PORTUGUÊS

TABLE of Contents

TABLE OF CONTENTS

3 SAFETY INSTRUCTIONS
6 PRODUCT INTRODUCTION

6 Name and function of parts
6 What to do before operation
6 Operation Indication Lamps

7 OPERATING INSTRUCTION

7 Wireless Remote Controller
8 How to insert the Batteries
8 Wireless Remote Controller Maintenance
8 Operating Method

9 OWNER'S INSTRUCTION

9 Cooling Mode - Standard Operation
9 Cooling Mode - Power Cooling
10 Auto Operation Mode
11 Auto Changeover Mode
12 Auto Changeover Mode - Setting the Mode Change Temperature
13 Dehumidification Mode
14 Heating Mode
15 Fan Mode

16 TEMPERATURE SETTING/ROOM

TEMPERATURE CHECKING

17 AIRFLOW SETTING

17 Up/Down Airflow Direction Control (Optional)
17 Left/Right Airflow Direction Control (Optional)

18 SUB FUNCTION

18 Plasma Purification(Optional)
18 Auto Clean (Optional)
19 Smart Clean (Optional)
20 LCD Luminosity Control (Optional)
20 Celsius/Fahrenheit Switching
20 Electric heater (Optional)
21 Individual vane angle control (Optional)

22 TIMER

22 Setting the Current Time
22 Sleep Timer Setting
22 On Timer Setting
22 Off Timer Setting
22 To cancel the Timer Setting

23 MAINTENANCE AND SERVICE

23 Indoor Unit
24 Purifying filter(Optional)
25 Operation Tips!

25 When the air conditioner is not going....

26 Troubleshooting Tips! Save time and money!
26 Call the service immediately in the following situations

2 Ceiling Cassette-Type Air Conditioner

Safety instructions

ENGLISH

Safety instructions

The following safety guidelines are intended to prevent unforeseen risks or damage from unsafe or incorrect
operation of the appliance.

The guidelines are separated into ‘WARNING’ and ‘CAUTION’ as described below.

This symbol is displayed to indicate matters and operations that can cause risk.

!

Read the part with this symbol carefully and follow the instructions in order to avoid risk.

!

WARNING

This indicates that the failure to follow the instructions can cause serious injury or death.

!

CAUTION

This indicates that the failure to follow the instructions can cause the minor injury or damage to the
product.

!

WARNING

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 re-install 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.

• 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 turn on the breaker or power under condition that front panel, cabinet, top cover, control box cover are
removed or opened.

- Otherwise, it may cause fire, electric shock, explosion or death.

• Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not compress air or Oxygen
and Do not use Flammable gases. Otherwise, it may cause fire or explosion.

- There is the risk of death, injury, fire or explosion.

Owner's Manual 3

Safety instructions

Operation

• 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.

• 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 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.

• 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.

!

CAUTION

Installation

• 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.

4 Ceiling Cassette-Type Air Conditioner

Safety instructions

ENGLISH

• 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.

• If anyone other than a licensed professional installs, repairs, or alters LG Electronics air conditioning products,
the warranty is voided.

- All costs associated with repair are then the full responsibility of the owner.

• Do not install the unit in potentially explosive atmospheres.

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.

• 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 anything 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.

• 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 hazards.

• This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge unless they have been given supervision or instruction
concerning use of the appliance by a person responsible for their safety.

- Children should be supervised to ensure that they do not play with the appliance.

• The user must carry out checks and cleaning of routine to avoid defective performance.

- In a special situation, only service personnel can carry out repair work.

Owner's Manual 5

Product Introduction

4

Product Introduction

Name and function of parts

7

6

2

1

5

4

What to do before operation

3

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

8

prevent electrical shocks.

Pair system or simultaneous operation system

Multi system

Operation Indication Lamps

On/Off

Filter Sign : Lights up after 2 400 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

•

: Lights up during the system operation.

: To operate the unit when the remote control can't be used
for any reason.

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)

• This function may not be supported, depending on the model.

• The feature can be changed according a type of model.

6 Ceiling Cassette-Type Air Conditioner

Operating Instruction

Wireless Remote Controller

1

2

3

4

5
6

7
8

9

Operation Mode

Cooling Mode

Auto Mode or Auto Changeover

Dehumidification mode

Heating Mode

Fan Mode

•

Cooling Model( ), Heat Pump Model( )

10
11

12

13

14

15
16

17

Operating Instruction

ENGLISH

VANE ANGLE Button

Used to set each vane angle.

FUNCTION SETTING Button

Used to set or clear Auto Clean, Smart Clean,
Electric heater or Individual vane angle control.

ON/OFF Button

Used to turn on/off the unit.

JET COOL Button

Speed cooling operates super high fan speed.

LEFT/RIGHT AIRFLOW Button (OPTIONAL)

Used to set the desired left/right(horizontal)
airflow direction.

UP/DOWN AIRFLOW Button

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

ON TIMER Button

Used to set the time of starting operation.

SLEEP TIMER Button

Used to set the time of sleeping operation.

SET / CLEAR Button

Used to set/clear the timer.
Used to set the current time.(if it input for 3 s)

PLASMA Button (OPTIONAL)

Used to start or stop the plasma-purification
function.

ROOM TEMPERATURE SETTING Button

Used to select the room temperature.

OPERATION MODE SELECTION Button

Used to select the operation mode.

INDOOR FAN SPEED SELECTION Button

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

ROOM TEMPERATURE CHECKING Button

Used to check the room temperature.

OFF TIMER Button

Used to set the time of stopping operation.

TIMER SETTING(Up/Down)/LIGHT Button

Used to set the timer.
Used to adjust the brightness.(if it is not time
adjust mode)

RESET Button

Used to reset the remote controller.

Owner's Manual 7

Operating Instruction

How to insert the Batteries

1. Remove the battery cover by pulling it according to the arrow
direction.

2. Insert new batteries making sure that the (+) and (-) of battery are
installed correctly.

3. Reattach the cover by sliding it back into position.

1. Always use/replace both batteries of same type.

2. If the system is not to be used for a long time, remove the
batteries to save their working life.

3. If the display screen of remote controller starts, fading replace
both of the batteries.

Wireless Remote Controller Maintenance

1. Choose a suitable place where its safe & easy
to reach.

2. Fix the holder to wall etc with the supplied
screws firmly.

3. Slide the remote controller inside the holder.

1. Remote controller should never be exposed to
direct sunlight.

2. Signal transmitter & receiver should always be
clean for proper communication. Use a soft
cloth to clean them.

3. In case some other appliances also get
operated with remote control, change their
position or consult your serviceman.

Operating Method

1. The signal receiver is inside the unit.

2.

Aim the remote controller towards the unit to operate it.
There should not be any blockage in between.

Accessory

Holder(1 EA) Fixing Screw (2 EA) Owner's / Installation

8 Ceiling Cassette-Type Air Conditioner

Manual

To lower the temperature

To raise the temperature

Owner's Instruction

Cooling Mode - Standard Operation

Press the ON/OFF button.
The unit will respond with beep sound.

1

Press MODE button to select Cooling Mode.

2

Set the desired temperature by pressing TEMP button.
Press ROOM TEMPERATURE CHECKING button to

3

check the room temperature. When setting the desired
temperature is higher than room temperature, cooling
wind isn’t blow out.

h Setting Temp. Range : 18~30 °C (64~86 °F)

Cooling Mode - Power Cooling

Owner's Instruction

ENGLISH

Press the ON/OFF button.
The unit will respond with beep sound.

1

Press MODE button to select Cooling Mode.

2

Press the JET COOL button. The unit will operate in super
high fan speed in cooling mode.

3

h Wall mounted models operate power cooling mode for

30 minutes.

To cancel the Power cooling Mode press the Jet Cool button or the fan button
or the room temperature setting button again and the unit will operate in high

4

fan speed in cooling mode.

or or

Owner's Manual 9