LG LW1216HR User Manual

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EN ENGLISH

*MFL70559722*

Copyright © 2020 - 2021 LG Electronics Inc. All Rights Reserved

MFL70559722

Rev.06_110621

AIR CONDITIONER

Read this owner’s manual thoroughly before operating the appliance

and keep it handy for reference at all times.

OWNER’S MANUAL

TYPE : WINDOW

LW1216HR

LW1221HRSM

Questions and Answers:

C
Christine HartAug 14, 2025
Why my LG Air Conditioner does not start?
- T
  Troy RussellAug 14, 2025
  If your LG Air Conditioner isn't starting, first ensure it's fully plugged into the outlet. Check your house's fuse or circuit breaker box, and replace the fuse or reset the breaker if needed. If there was a power failure, turn the mode control to off and wait 3 minutes after power is restored before restarting the unit. Finally, if the current interrupter device has tripped, press the RESET button on the power cord plug. If it won't stay engaged, stop using the air conditioner and contact a qualified technician.
R
ruben68Aug 17, 2025
What to do if my LG Air Conditioner does not cool as it should?
- H
  Haley OconnellAug 18, 2025
  If your LG Air Conditioner isn't cooling as expected, make sure that curtains, blinds, or furniture are not blocking the front of the unit. Also, ensure the set temperature is lower than the current room temperature. Clean the air filter every 2 weeks. Remember that after turning on the air conditioner, you need to allow time for the room to cool down. Check for open furnace floor registers and cold air returns. Finally, if the cooling coils have iced up, set the mode control at High Fan or High Cool.
R
Richard BrooksAug 21, 2025
Why is my LG LW1216HR Air Conditioner freezing up?
- M
  Mary WilsonAug 21, 2025
  If your LG Air Conditioner is freezing up, it's likely due to iced-over cooling coils. Ice can block airflow, preventing the unit from cooling properly. To resolve this, set the mode control to either High Fan or High Cool. This should help melt the ice and restore proper airflow.
W
Wendy WhiteAug 25, 2025
What to do if my LG Air Conditioner water drips indoors?
- F
  fkimAug 25, 2025
  To resolve water dripping indoors from your LG Air Conditioner, ensure the unit is properly tilted. It should slant slightly from the front to the rear of the cabinet to allow for proper water disposal.
T
Teresa BeasleyAug 27, 2025
Why does my LG LW1216HR Air Conditioner turn on and off rapidly?
- J
  Jessica JordanAug 27, 2025
  If your LG Air Conditioner turns on and off rapidly, the air filter may be dirty and restricting airflow; try cleaning it. Also, extremely hot outside temperatures can cause this issue. In this case, refer to the installation instructions or check with the installer.
E
ephillipsAug 30, 2025
Why is my LG LW1216HR Air Conditioner making noise when cooling?
- S
  stevencolemanAug 30, 2025
  If you're experiencing noise when your LG Air Conditioner is cooling, it could be due to normal air movement sounds. If the noise is too loud, try setting the fan to a lower setting. Alternatively, window vibration from poor installation could be the cause. Refer to the installation instructions or check with the installer.
A
angelastevensonSep 3, 2025
Why is the remote sensing deactivating prematurely on my LG LW1216HR Air Conditioner?
- E
  Emily DaltonSep 3, 2025
  If the remote sensing on your LG Air Conditioner is deactivating prematurely, make sure the remote control is within a 20 feet and 120° radius of the front of the unit. Also, check for and remove any obstructions that may be blocking the remote control signal.
D
Dana ValenciaSep 6, 2025
What to do if my LG LW1216HR Air Conditioner makes room too cold?
- J
  Jonathan StanleySep 6, 2025
  If your room is too cold when using your LG Air Conditioner, the set temperature might be too low. Try increasing the set temperature to a more comfortable level.
C
Colleen JonesSep 9, 2025
Why I have trouble connecting my LG appliance and smartphone to Wi-Fi network?
- T
  Tiffany SmithSep 9, 2025
  If you're having trouble connecting your LG appliance and smartphone to the Wi-Fi network, the password for the Wi-Fi network may have been entered incorrectly. Delete your home Wi-Fi network and begin the registration process again. Also, ensure that mobile data on your smartphone is turned off before registering the appliance. The wireless network name (SSID) should be a combination of English letters and numbers (without special characters). Only a 2.4 GHz router frequency is supported, so set the wireless router to 2.4 GHz. Finally, if the appliance is too far from the router, move the router closer to the appliance or install a Wi-Fi repeater.

LG LW1216HR Specifications

General

Type	Window Air Conditioner
Cooling Capacity	12, 000 BTU
Energy Efficiency Ratio (EER)	12.1
Voltage	115V
Amperage	10.8 A
Fan Speeds (Cooling)	3
Fan Speeds (Fan Only)	3
Amperage (Cooling)	10.8 A
Minimum Window Height	16"
Operating Modes	Cool, Heat, Fan, Dry
Fan Speeds	3
Refrigerant	R410A
Features	Remote control
Dehumidification	3.8 pints/hour
Window Width (Min)	26"
Window Width (Max)	36"

Summary

Safety Instructions

Important Safety Instructions

General safety guidelines and warnings for product usage.

Product Overview

Exterior Parts

Identification and listing of the external components of the air conditioner.

Interior Parts

Identification and listing of the internal components of the air conditioner.

Installation

Electrical Data

Technical specifications and electrical requirements for installation.

Parts Included

Lists and illustrates all parts included with the air conditioner.

Tools Needed

Specifies the tools required for the installation process.

How to Install the Unit

Step-by-step guide for physically installing the air conditioner unit.

Window Requirements

Specifies the window dimensions and types suitable for installation.

Storm Window Requirements

Details requirements and adjustments for installing with storm windows.

Preparation of Cabinet

Steps to prepare the air conditioner cabinet before installation.

Cabinet Installation

Instructions for mounting and securing the air conditioner cabinet in the window.

Unit Installation

Final steps for sliding and securing the unit into the installed cabinet.

Operation

Control Panel and Remote Control

Explanation of buttons and functions on the unit's control panel and remote.

Wireless Remote Control

Guide to using the remote control, including battery installation.

Ventilation

How to use the ventilation lever for fresh air intake.

Air Direction

Adjusting the airflow direction using louvers.

Additional Features

Information on features like Slinger Fan and Drain Pipe.

Smart Functions

LG ThinQ Application

Connecting the air conditioner to a smartphone via the ThinQ app.

Smart Diagnosis

Using the app to diagnose and solve appliance problems.

Maintenance

Air Filter

How to check, clean, and replace the air filter for optimal performance.

Cleaning the Air Conditioner

Guidelines for cleaning the air conditioner's external parts.

Troubleshooting

Normal Sounds You May Hear

Explains common sounds the air conditioner might make during operation.

Possible Causes & Corrective Action

A guide to identifying and resolving common operational problems.

Warranty

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