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OWNER'S MANUAL
WASHING MACHINE
Read this owner's manual thoroughly before operating the
appliance and keep it handy for reference at all times.
ENGLISH
WM4000H*A / WM4080H*A
www.lg.com
MFL71728908
Copyright © 2020-2022 LG Electronics Inc. All Rights Reserved.
Rev.02_051022

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Summarization of Contents

Washing Machine Safety Instructions
Safety Warnings
Statements detailing potential hazards that can cause death or serious injury.
Electrical Grounding Instructions
Information regarding proper grounding of the appliance for electrical safety.
Safety Cautions
Statements detailing potential hazards that can cause injury or product damage.
Washing Machine Product Overview
Product Components and Features
Description and illustration of the main components and features of the washing machine.
Washing Machine Installation Guide
Installation Location Requirements
Requirements for selecting the correct location to install the washing machine.
Unpacking and Shipping Material Removal
Steps for safely removing shipping materials and preparing the appliance.
Connecting Water Inlet Hoses
Instructions for connecting the hot and cold water supply hoses to the washer.
Connecting the Drain Hose
Guidance on how to connect the drain hose for proper water removal.
Washer Leveling Procedure
Steps to ensure the washer is level for optimal performance and reduced vibration.
Final Installation Checks
Final checks to ensure the appliance is properly installed and ready for use.
Washing Machine Operation Guide
Operating the Washing Machine
Step-by-step guide on how to start and operate the washing machine for a cycle.
Laundry Sorting Guide
Guidance on how to group laundry items for optimal washing results and garment care.
Loading the Washing Machine
Tips and instructions for properly loading clothes into the washing machine drum.
Detergent and Cleaning Product Usage
Instructions on how to add detergent, bleach, and fabric softener.
Washing Machine Control Panel Features
Control Panel Overview and Functions
Detailed explanation of the buttons, display, and indicators on the control panel.
Washing Machine Wash Cycles
Overview of Wash Cycles
Descriptions and default settings for various wash cycles available on the machine.
Washing Machine Cycle Modifier Settings
Adjusting Wash Temperature
Adjusting wash and rinse temperatures for selected cycles.
Adjusting Spin Speed
Selecting appropriate spin speeds to extract water from clothes efficiently.
Adjusting Soil Level
Modifying cycle times and actions based on the soil level of the laundry.
Washing Machine Optional Functions
Using the Steam Option
Using steam for superior cleaning performance and allergen reduction.
Fresh Care Functionality
Tumbling clothes periodically to prevent wrinkles after the cycle ends.
Wi-Fi Connection Guide
Connecting the washer to a home Wi-Fi network for smart features.
Adding Items Mid-Cycle
Allows adding or removing items mid-cycle after the door unlocks.
Remote Start Functionality
Controlling the washer remotely using a smartphone application.
Delay Wash Functionality
Setting a delay for the start of the wash cycle, up to 19 hours.
Control Panel Lock Feature
Disabling the control panel to prevent unintended operation or changes.
Signal Tone Settings
Turning the melody and button tones on or off for notifications.
Spin Only Cycle Option
Option to spin clothes and drain water from the tub without washing.
Washing Machine Smart Functions
LG ThinQ App Features
Features of the LG ThinQ app for smartphone control and monitoring.
Installing the ThinQ App
Steps to download and install the LG ThinQ application on your smartphone.
Remote Appliance Operation
Controlling the washer remotely via smartphone, including Remote Start.
Downloading Custom Cycles
Downloading specialized wash cycles not included in standard options.
Appliance Diagnosis via App
Using the app to diagnose and solve appliance issues with troubleshooting information.
Washing Machine Maintenance Guide
Routine Washer Cleaning
Instructions for routine cleaning of the washer's interior and exterior parts.
Scheduled Maintenance Tasks
Scheduled maintenance tasks to ensure optimal performance and longevity.
Drum Cleaning Procedure
Procedure for cleaning the drum to remove residue, mildew, and odors.
Mineral Buildup Removal
Cleaning internal components to remove mineral scale, especially in hard water areas.
Dispenser Drawer Cleaning
Steps to remove and clean the detergent dispenser drawer for optimal dispensing.
Door Seal Cleaning
How to clean the door seal to prevent dirt build-up and maintain functionality.
Water Inlet Filter Cleaning
Procedure to clean inlet filters if the washer does not fill properly.
Drain Pump Filter Cleaning
Instructions for cleaning the drain pump filter to prevent clogging and ensure proper draining.
Washing Machine Cold Climate Care
Washer Storage Instructions
Steps to protect the washer from freezing temperatures during extended storage.
Thawing Frozen Water Inlet Hoses
Procedure to thaw frozen water inlet hoses and ensure proper water supply.
Washing Machine Troubleshooting
Troubleshooting Before Service Call
Initial checks and common issues to resolve before contacting customer support.
Washer Error Code Reference
Explanation of error codes, their meanings, and how to resolve them.
Troubleshooting Washer Noises
Troubleshooting guide for various operational noises and their likely causes.
Washing Machine Limited Warranty
US Limited Warranty Details
Details of the limited warranty coverage, terms, and conditions for products sold in the USA.
Canadian Limited Warranty Details
Details of the limited warranty coverage, terms, and conditions for products sold in Canada.

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