LG ARNU12GTUB4 User guide

www.lg.com

Please read this manual carefully before operating your set and retain it for future
reference. Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
This equipment shall be provided with a supply conductor complying with the national
regulation.

Original instruction (R410A/R32)
[

Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared

Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands

[Manufacturer]

LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro,
Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA

Copyright © 2017 - 2019 LG Electronics Inc. All Rights Reserved.

OWNER’S MANUAL

AIR
CONDITIONER

MFL67870252

Rev.03_120219

РУССКИЙ ЯЗЫК

ENGLISH ITALIANO ESPAÑOL

УКРАÏНСЬКА

ҚАЗАҚ ТІЛІ

БЕЛАРУСКАЯ МОВА

FRANÇAIS

OʻZBEK TILI

DEUTSCH

ΕΛΛΗΝΙΚΆ

ČEŠTINA

NEDERLANDS

POLSKI

LIMBA ROMÂNĂ

Table of Contents

TABLE OF CONTENTS

3 SAFETY INSTRUCTIONS

9 PRIOR TO OPERATION

9 Preparing for Operation

9 Usage

9 Cleaning and Maintenance

9 Service

10 OPERATING INSTRUCTIONS

10 Forced Operation

10 Auto Restart Function

11 MAINTENANCE AND SERVICE

11 Ceiling Cassette - 1Way (Plasma + Grille Type)

12 Ceiling Cassette - 1Way (Plasma + Panel Type)

13 Ceiling Cassette - 2Way

14 Ceiling Cassette - 4Way

15 Ceiling Cassette - Round

16 Ceiling Concealed Duct & Fresh Air Intake Unit

17 Concealed Floor Standing

18 Art Cool Gallery Series

20 Wall Mounted

21 Convertible

22 Console

23 When the air conditioner is not going to be used for a long time

23 Operation Tips

24 Before you call for service...

2 Indoor Unit

Safety Instructions

The following symbols are displayed on indoor and outdoor units

Safety Instructions

ENGLISH

Read the precautions in this manual
carefully before operating the unit.

This symbol indicates that the
Operation Manual should be read
carefully.

This appliance is filled with flammable
refrigerant (for R32)

This symbol indicates that a service
personnel should be handling this
equipment with reference to the
Installation Manual.

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.

Owner’s Manual 3

Safety Instructions

• 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.

• 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.

• 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.

• 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.

• The appliance shall be stored in a well-ventilated area where the room size
corresponds to the room area as specified for operation. (for R32)

• Ducts connected to an appliance shall not contain an ignition source. (for
R32)

• The appliance shall be stored in a room without continuously operating
ignition sources (for example: open flames, an operating gas appliance or
an operating electric heater.)

• Keep any required ventilation openings clear of obstruction.

4 Indoor Unit

Safety Instructions

ENGLISH

Operation

• 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 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, smell 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.

Owner’s Manual 5

Safety Instructions

• 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.

• Take care to ensure that nobody could step on or fall onto the outdoor unit.

- This could result in personal injury and product damage.

• 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 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.

!

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.

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

- Avoid personal injury.

• Any person who is involved with working on or breaking into a
refrigerant circuit should hold a current valid certificate from an industry
accredited assessment authority, which authorizes their competence to
handle refrigerants safely in accordance with an industry recognized
assessment specification. (for R32)

• The appliance shall be stored so as to prevent mechanical damage
from occurring.

• 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.

6 Indoor Unit

Safety Instructions

ENGLISH

• 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.

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.

Owner’s Manual 7

Safety Instructions

• Servicing shall only be performed as recommended by the equipment
manufacturer. Maintenance and repair requiring the assistance of other
skilled personnel shall be carried out under the supervision of the
person competent in the use of flammable refrigerants. (for R32)

• 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.

• This appliance can be used by children aged from 8 years and above
and persons with reduced physical, sensory or mental capabilities or
lack of experience and knowledge if they have been given supervision
or instruction concerning use of the appliance in a safe way and
understand the hazards involved.
Children shall not play with the appliance. Cleaning and user
maintenance shall not be made by children without supervision.

• 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.

• Do not touch refrigerant pipe and water pipe or any internal parts while
the unit is operating or immediately after operation.

- It can cause a burn or frostbite.

8 Indoor Unit