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LG K12AH - User Manual

LG K12AH
26 pages
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OWNER’S MANUAL
AIR
C
O
NDITIONER
P/NO : 5400469101 Rev.: c
TYPE : ARTCOOL MIRROR
Prior to installation, this air
conditioning unit must be
submitted for approval by the
utility service which provides
electricity (EN 61000-2,
EN 61000-3 Norm).
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.
www.lge co
m
.

Questions and Answers

  • E
    Eugene LarsenJul 29, 2025
    Why is my LG Air Conditioner not cooling effectively?
    • C
      Cody McdanielJul 29, 2025
      There might be several reasons why your LG Air Conditioner isn't cooling or heating effectively. Ensure the air filter is clean by following the air filter cleaning instructions. Also, verify that the temperature is set correctly and that the air inlet or outlet vents of the indoor unit are not obstructed.
  • A
    Ashley JohnsonAug 2, 2025
    What to do if my LG K12AH Air Conditioner is leaking condensation?
    • W
      William JohnsonAug 2, 2025
      If condensation is leaking from your LG air conditioner, check that the drain hose is tightly connected. Also, ensure the indoor unit is installed evenly.
  • A
    Andrew CisnerosAug 6, 2025
    Why is my LG Air Conditioner so noisy?
    • J
      Joanna HansonAug 6, 2025
      The noise from your LG Air Conditioner could be due to a couple of reasons: if it sounds like water flowing, it's the refrigerant circulating inside the unit. If it sounds like compressed air releasing, it's the dehumidifying water being processed.
  • J
    Jerome HarrisAug 10, 2025
    Why LG Air Conditioner does not operate for 3 minutes after turning on?
    • A
      Andrea MarshallAug 11, 2025
      The delay in operation of your LG Air Conditioner after turning it on is due to a protective mechanism. It protects the compressor from frequent on/off cycles. Wait about 3 minutes, and the operation will begin.
  • P
    Patricia MunozAug 15, 2025
    What to do if my LG K12AH Air Conditioner does not operate?
    • S
      scott18Aug 15, 2025
      If your LG Air Conditioner isn't operating, first check the room temperature setting. Then, check if the circuit breaker is on.
  • T
    Taylor MccormickAug 19, 2025
    Why is the display on my LG Air Conditioner remote faint?
    • C
      cardenasbrendaAug 19, 2025
      A faint or absent display on your LG Air Conditioner remote usually indicates depleted batteries. Alternatively, check if the batteries are inserted correctly, paying attention to the (+) and (-) directions.
  • D
    Deborah MckeeAug 25, 2025
    Why do I hear a crack sound from my LG Air Conditioner?
    • S
      Susan JonesAug 25, 2025
      The cracking sound you hear from your LG Air Conditioner is typically due to the expansion and constriction of the front panel caused by temperature changes.

Summary

Safety Precautions

Installation Safety Guidelines

Critical safety instructions for the installation process, covering electrical and physical placement.

Operation Safety Guidelines

Safe Usage Practices

Rules for operating the unit safely and preventing hazards, including child safety.

Electrical Safety

Grounding and Adapter Usage

Importance of grounding, and warnings against using adapters.

Extension Cord Usage

Guidelines for using extension cords safely and correctly.

Operating Instructions

Remote Control Operations

Button Function Descriptions

Explains the purpose of each button on the remote control.

Operation Mode Selection

How to select different operating modes like Cooling, Auto, Heating.

Cooling Operation

Setting Cooling Temperature

How to adjust the desired temperature for cooling mode.

Auto Changeover Operation

Auto Changeover Function

How the unit automatically switches modes to maintain temperature.

Healthy Dehumidification Operation

Dehumidification Mode Operation

How to use the dehumidification function for comfort.

Heating Operation

Setting Heating Temperature

How to adjust the desired temperature for heating mode.

Jet Cool

NEO PLASMA Purification Operation

Vertical Airflow Direction Control

Horizontal Airflow Direction Control

Maintenance and Service

Air Filter Cleaning

How to remove and clean the air filters regularly.

Long-Term Storage

Troubleshooting

Unit Not Operating

Checks for when the air conditioner does not turn on.

Performance Issues

What to check if cooling or heating is not effective.

LG K12AH Specifications

General IconGeneral
Cooling Capacity12000 BTU/h
Power Supply220-240V, 50Hz
TypeSplit
Operating Temperature (Cooling)18°C to 43°C
Noise Level (Outdoor)52 dB

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