LG USNW092WSZ2 User Guide

OWNER’S MANUAL

AIR CONDITIONER

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

www.lg.com

TYPE : WALL MOUNTED

P/NO : MFL67399721

*MFL67399721*

ENGLISH

PORTUGUESE

2

TIPS FOR SAVING ENERGY

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TIPS FOR SAVING ENERGY

Here are some tips that will help you minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
below:

• Do not cool excessively indoors. This may be harmful for your health and may consume more
electricity.

• Block sunlight with blinds or curtains while you are operating the air conditioner.

• Keep doors or windows closed tightly while you are operating the air conditioner.

• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.

• Speed up the fan to cool or warm indoor air quickly, in a short period of time.

• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air con­ditioner is used for many hours.

• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block
the air flow or weaken the cooling / dehumidifying functions.

For your records

Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:

Model number :

Serial number :

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

Dealer’s name :

Date of purchase :

IMPORTANT SAFETY INSTRUCTIONS

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IMPORTANT SAFETY INSTRUCTIONS

READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.

Always comply with the following precautions to avoid dangerous situations and ensure peak
performance of your product

WARNING

It can result in serious injury or death when the directions are ignored

CAUTION

It can result in minor injury or product damage when the directions are ignored

WARNING

• Installation or repairs made by unqualified persons can result in hazards to you and others.

• Appliance shall be installed in accordance with national wiring regulations.

• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or
similarly qualified persons in order to avoid a hazard.

• The information contained in the manual is intended for use by a qualified service technician
familiar with safety procedures and equipped with the proper tools and test instruments.

• Failure to carefully read and follow all instructions in this manual can result in equipment mal­function, property damage, personal injury and/or death.

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

Installation

• Use a standard circuit breaker and fuse conforming with the rating of the air conditioner. Fail­ure to do so may result in electric shock or product failure.

• Contact an authorized service center when you install or relocate the air conditioner. Failure to
do so may result in serious injury or product failure.

• Always use a power plug and socket with a ground terminal.Failure to do so may result in
electric shock or product failure

• Install the panel and the cover of the control box safely. Failure to do so may result in explo­sion or fire.

• Install a dedicated electric outlet and circuit breaker before you use the air conditioner. Failure
to do so may result in electric shock or product failure.

• Use a standard circuit breaker and fuse conforming with the rating of the air conditioner. Fail­ure to do so may result in electric shock or product failure.

• Do not modify or extend the power cable. If the power cable or cord has scratches or skin
peeled off or deteriorated then it must be replaced. It may result in fire or electric shock.

• Be cautious when you unpack or install the air conditioner. Failure to do so may result in seri­ous injury or product failure.

• Do not install the air conditioner on an unstable surface or where there may be a danger of it
falling. It may result in death, serious injury, or product failure.

• Use inflammable gas (nitrogen) to inspect leak and to purge air, using compressed air or flam­mable gas may cause fire or explosion.

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IMPORTANT SAFETY INSTRUCTIONS

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Operation

• Do not let the air conditioner run for a long time when the humidity is very high or when a door or
window has been left open. Failure to do so may result in product failure.

• Make sure that the power cord is not pulled or damaged while the air conditioner is operating. Fail­ure to do so may result in fire, electric shock, or product failure.

• Do not place any objects on the power cord. It may result in electric shock or product failure.

• Do not turn on or off the air conditioner by plugging in or unplugging the power plug. It may result in
fire or electric shock.

• Do not touch, operate or repair the air conditioner with wet hands. It may result in electric shock or
product failure.

• Do not place a heater or other heating appliances near the power cable. It may result in fire, electric
shock, or product failure.

• Do not allow water to run into the air conditioner. It may result in explosion or fire.

• Do not leave flammable substances such as gasoline, benzene and thinner near the air conditioner.
It may result in explosion or fire.

• Do not use the air conditioner for an extended period of time in a small place without ventilation.
Ventilate the place regularly. Failure to do so may result in explosion or fire.

• When there is a gas leak, ventilate sufficiently before using the air conditioner again. Failure to do so
may result in explosion or fire.

• Unplug the power plug if there is a noise, smell or smoke coming from the air conditioner. Failure to
do so may result in explosion or fire.

• Stop operating and close the window in strom or hurricane.If possible remove the product from the
window before hurricane arrives

• Do not touch the electrostatic filter after opening the front grille. Failure to do so may result in elec­tric shock or product failure.

• Contact an authorized service center when the air conditioner is submerged into water due to flood­ing. Failure to do so may result in explosion or fire.

• Be cautious water could not enter the product

• Make sure to ventilate sufficiently when this air conditioner and a heating appliance such as a heater
are used simultaneously. Failure to do so may result in fire, serious injury, or product failure.

• Turn the main power off and unplug the power plug when you clean or repair the air conditioner.
Failure to do so may result in death, serious injury, or product failure.

• Unplug the power plug when the air conditioner is not used for an extended period of time. Failure
to do so may result in product failure.

• Do not place any objects on the air conditioner. It may result in product failure.

• For inner cleaning, contact an Authorized Service Center or a dealer.
Do not use harsh detergent that causes corrosion or damage on the unit.
Harsh detergent may also cause failure of product, fire, or electronic shock.

• 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.

IMPORTANT SAFETY INSTRUCTIONS

5

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CAUTION

Installation

• Make sure to check if there is a refrigerant leak after you install or repair the air conditioner. Failure
to do so may result in product failure.

• Install the drain hose properly for smooth drainage of condensed water. Failure to do so may result
in product failure.

• Keep level even when installing the product.

• Install the air conditioner where the noise from the outdoor unit or the exhaust gas will not incon­venience the neighbors. Failure to do so may result in conflict between neighbors.

• When transporting the equipment, there should be at least 2 or more people, or a forklift. It may re­sult in serious injury.

• Do not install the air conditioner where it will be exposed to sea wind (salt spray) directly. It may re­sult in product failure.

Operation

• Do not expose people, animals or plants to the cold or hot wind from the air conditioner. It may re­sult in serious injury.

• 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. It may result in death, fire or electric
shock.

• Do not block the inlet or outlet of air flow. It may result in explosion or product failure.

• Do not use strong cleaning agents or solvents when you clean the air conditioner, or spray water.
Use a smooth cloth. It may result in serious injury or product failure.

• Never touch the metal parts of the air conditioner when you remove the air filter. It may result in se­rious injury or product failure.

• Do not place any objects on the air conditioner. It may result in product failure.

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

• Do not insert hands or other objects through the air inlet or outlet while the air conditioner is operat­ing. It may result in electric shock.

• Do not drink the water drained from the air conditioner. It may result in serious health complications.

• Use a sturdy stool or ladder when you clean, maintain or repair the air conditioner at a height. Failure
to do so may result in serious injury or product failure.

• Do not mix the batteries for the remote control with other types of batteries or mix new batteries
with used batteries. Failure to do so may result in product failure.

• Do not recharge or disassemble the batteries. Failure to do so may result in explosion, fire or serious
injury.

• Stop using the remote control if there is a battery fluid leak. If your cloth or skin is exposed to the
battery fluid from a leak, wash it off with clean water. Failure to do so may result in serious injury.

• If you swallow the battery fluid from a leak, wash out the inside of your mouth thoroughly and then
consult a doctor. Failure to do so may result in serious health complications.

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TABLE OF CONTENTS

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TABLE OF CONTENTS

2

TIPS FOR SAVING ENERGY

3 IMPORTANT SAFETY

INSTRUCTIONS

7 BEFORE USE

7 Components

8 Using the remote control

10 BASIC FUNCTIONS

10 Cooling your room

10 Heating your room

10 Removing humidity

11 Airing your room

11 Adjusting the fan speed

11 Adjusting the air flow direction

11 Setting the timer

12 Setting sleep mode

13 ADVANCED FUNCTIONS

13 Changing room temperature quickly

13 Indoor air purification

14 Auto operation

14 Auto Changeover operation

14 Display screen brightness

15 Operating the air conditioner without the

remote control

15 Restarting the air conditioner

automatically

16 Energy saving cooling mode

17 MAINTENANCE

18 Cleaning the air filter

19 TROUBLESHOOTING

19 Self-diagnosis function

19 Before requesting service

BEFORE USE

7

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Air Intake Vents

Connecting
Wires

Base Plate

Piping

Drain Hose

Air Outlet Vents

BEFORE USE

Components

Outdoor unit

Front grille

Air filter

Air inlet

On/ Off button

Signal receiver

Operation lamp

Air outlet

Air deflector
(Vertical louver & Horizontal vane)

Air filter

3M Multi Protection Filter

Plasmaster
Ionizer

NOTE

!

The number of operation lamps and their locations may vary, depending on the model of the
air conditioner.

Indoor unit

* The feature can be changed according to type of model.

* The feature can be changed according to type of model.

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BEFORE USE

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Using the remote control

You can operate the air conditioner more conveniently with the remote control. You will find the
buttons for the additional functions under the cover of the remote control.

Wireless remote control

* Some functions may not be supported, depending on the

model.

Control

panel

Display

screen

Description

/

4

Fan button : Air come out from the in­door unit below to the room without air
temperature change.

l

Sleep mode auto button*: Sets the
sleep mode auto operation.

_

Temperature adjustment buttons: Ad­justs the room temperature when cool­ing and heating.

|

- On/Off button: Turns the power on/off.

g

L

Indoor fan speed button: Adjusts the
fan speed.

f

AC

DB

Operation mode selection button*:
Selects the operation mode.
Cooling operation (A) / Auto operation
or auto changeover (C) / Dehumidify­ing operation (D) / Heating operation
(B)

M

Jet cooling/heating button*: Warms up
or cools down the indoor temperature
within a short period of time.

i

:

Air flow direction button: Adjusts the air
flow direction vertically.

k

S

Temperature display button: Displays the
room temperature. Also changes unit
from °C to °F if pressed for 5 seconds.

mn

Timer button: Sets the current time and
the start / end time.

S
P

-

G

Navigation and functions button*:
Sets the special functions.
SKIN CARE : Keep skin moisturized
G: Operates energy saving cooling

p

-

Set/clear button: Sets or cancels func­tions.

r

-

Reset button: Resets the air condi­tioner settings.

\

-

LIGHT button: Adjusts the brightness
of the indoor unit display.

H

J

J: Auto clean

Display
screen

Control
panel

BEFORE USE

9

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Inserting batteries

Insert batteries before using the remote
control. The battery type used is AAA (1.5 V).

1 Remove the battery cover.

2 Insert the new batteries and make sure

that the + and - terminals of the batteries
are installed correctly.

3 Reattach the battery cover.

Installing the remote control holder

Install the holder where there is no direct sun­light to protect the remote control.

1 Choose a safe and easily-accessible place.

2 Fix the holder by fastening the 2 screws

firmly with a screwdriver.

3 Slide the remote control into the holder.

Point the remote control towards the signal
receiver at the bottom of the air conditioner to
operate it.

NOTE

!

If the display screen of the remote control
starts to fade, replace the batteries.

NOTE

!

• The remote control may operate other
electronic devices if pointed towards
them. Make sure to point the remote
control towards the signal receiver of
the air conditioner.

• For proper operation, use a soft cloth to
clean the signal transmitter and receiver.

Operating method

10

BASIC FUNCTIONS

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BASIC FUNCTIONS

Cooling your room

(Cooling operation)

1 Press | to turn on the power.
2 Press f repeatedly to select the cooling

operation.

- A is displayed on the display screen.

3 Press G or H to set the desired tempera-

ture.

- The temperature range is 18°C (64°F) ~
30°C (86°F).

Heating your room

(Heating operation)

1 Press | to turn on the power.
2 Press f repeatedly to select the heating

operation.

- B is displayed on the display screen.

3 Press G or H to set the desired tempera-

ture.

- The temperature range is 16°C (60°F) ~
30°C (86°F).

Removing humidity

(Dehumidifying operation)

This mode removes excess moisture from an
environment with high humidity or in the rainy
season, in order to prevent mold from setting
in. This mode adjusts the room temperature
and the fan speed automatically to maintain
the optimal level of humidity.

1 Press | to turn on the power.
2 Press f repeatedly to select the dehu-

midifying operation.

-

D is displayed on the display screen.

NOTE

!

• In this mode you cannot adjust the room
temperature, as it is adjusted automati­cally. Also, the room temperature is not
displayed on the display screen.

NOTE

!

Cooling-only models do not support this
function.

BASIC FUNCTIONS

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Airing your room

(Air Circulation operation)

This mode only circulates the indoor air
without changing the room temperature.

1 Press | to turn on the power.
2 Press / repeatedly to select the air circu-

lation operation.

- E is displayed on the display screen.

3 Press g to adjust the fan speed.

Adjusting the fan speed

1 Press g repeatedly to adjust the fan

speed.

- Select 5if you want natural air.
The fan speed adjusts automatically.

Adjusting the air flow direc­tion

1 To adjust the direction of the air flow hori-

zontally, press i repeatedly and select
the desired direction.

- Select H to adjust the direction of the air

flow automatically.

Setting the timer

You can use the timer function to save energy
and to use the air conditioner more efficiently.

Setting the current time

1 Press p and hold it for longer than 3 sec-

onds.

- The AM/PM icon flickers at the bottom of
the display screen.

Remark Speed

High

Medium

Low

Natural Wind

NOTE

!

• Adjusting the air flow direction vertically
may not be supported, depending on
the model.

• Adjusting the air deflector arbitrarily may
cause product failure.

• If you restart the air conditioner, it starts
to operate with the previously set direc­tion of air flow, so the air deflector may
not match the icon displayed on the re­mote control. When this occurs, press
i to adjust the direction of the air flow
again.

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BASIC FUNCTIONS

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2 PressEorFto select the minutes.
3 Press p to finish.

Turning on the air conditioner auto­matically at a set time

1 Press m.

- The icon below flickers at the bottom of
the display screen.

2 PressEorFto select the minutes.
3 Press p to finish.
4 When setting the timer, current time and

ON icon are displayed on the display
screen indicating that the desired time is
set.

Turning off the air conditioner auto­matically at a set time

1 Press n.

- The icon below flickers at the bottom of
the display screen.

2 PressEorFto select the minutes.
3 Press p to finish.
4 When setting the timer, current time and

OFF icon are displayed on the display
screen indicating that the desired time is
set.

Canceling the timer setting

1 Press p.

- To cancel all timer settings, press

p.

Setting sleep mode

Use the sleep mode to turn off the air condi­tioner automatically when you go to sleep.

1 Press | to turn on the power.
2 Press l
3 PressEorFto select the hour

(up to 7 hours).

4 Press p to finish.

-

T is displayed on the display screen in

sleep mode.

NOTE

!

In the Cooling and Dehumidifying modes,
the temperature increases by 1°C after 30
minutes and by a further 1°C after another
30 minutes for a more comfortable sleep.
The temperature increases with up to 2°C
from the preset temperature.

ADVANCED FUNCTIONS

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ADVANCED FUNCTIONS

The air conditioner offers some additional ad­vanced functions.

Changing room temperature
quickly

(Jet Cool/Heat operation)

This mode allows you to cool indoor air quickly
in summer or warm it quickly in winter.

1 Press | to turn on the power.
2 Press M.

- In jet cooling mode, strong air blows out
at a temperature of 18°C (64°F) for 30
minutes.

- In jet heating mode, strong air blows out
at a temperature of 30°C (86°F) for 30
minutes.

Indoor air purification

Auto Clean operation (optional)

In the cooling and dehumidifying operations,
moisture is generated inside the indoor unit.
Use the auto cleaning function to remove
such moisture.

1 Press

H

.

-

J is displayed on the display screen.

- If you turn off the power, the fan oper­ates for 30 minutes and cleans the inside
of the indoor unit.

Skin Care Mode

Use the Skin Care mode to keeps skin mois­turized.

1 Press | to turn on the power.

2 Press

S to enter the Skin Care mode.

- Nothing is going to change on the remote

control display screen.

- This mode operates with high fan speed

and setting vane directions for maximum
moisturizing effect.
However, temperature is not changed.

- In this mode, you can change the setting

temperature, fan speed and vane direc­tions.

NOTE

!

• In Air Circulation, Auto, or Auto
Changeover mode, this function cannot
be used.

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

NOTE

!

Some buttons cannot be used while the
auto cleaning function is in operation.

NOTE

!

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

• This function can be operated on Cool­ing mode, Fan Mode and Plasma mode.

• Moisturizing effect may depend on the
environment.