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LG WM3770H*A - User Manual

LG WM3770H*A
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Please read this owner's manual thoroughly before operating and
keep it handy for reference at all times.
WM3770H*A
MFL68639737
{jw/BJDHCH/BB
ENGLISH
OWNER’S MANUAL
WASHING
MACHINE
www.lg.com

Table of Contents

Questions and Answers

  • S
    Stephen FosterAug 16, 2025
    Why is the LG Washer tub not rotating?
    • O
      owensstevenAug 16, 2025
      If your LG Washer tub isn't rotating, it might be overloaded. Try rearranging the load and restarting the washing machine. If the load is too large, the motor may overheat, preventing rotation. Let the machine stand for a while, then restart the cycle. If the issue persists, unplug the power cord and contact your nearest LG service center.
  • J
    Javier OrozcoAug 19, 2025
    What to do if LG WM3770H*A Washer has excessive suds or fails to rinse?
    • B
      barbaraklineAug 19, 2025
      If you see excessive suds or the LG Washer fails to rinse properly, it may be due to using too much detergent. Use only the recommended amount of detergent for your load size. For lightly soiled items, reduce the detergent quantity. Ensure you are using detergent with the HE (High-Efficiency) logo.
  • E
    Eric LeAug 22, 2025
    How to fix LG WM3770H*A Washer that drains slowly?
    • M
      Matthew CookAug 22, 2025
      If the LG Washer drains slowly or not at all, lower the drain hose to within 3 feet below the end of the elbow bracket. Ensure the drain hose lies on a smooth surface to prevent bending. If the drain hoses are frozen, thaw them with warm water. You can also open the drain pump plug cap and remove any accumulated dirt.
  • M
    Mitchell ParksAug 26, 2025
    Why is water not supplied to my LG Washer?
    • S
      Stephen LewisAug 26, 2025
      If the LG Washer water is not supplied or the water pressure is low, first, turn on the faucets. If a faucet is frozen, thaw it with warm water. If the inlet filter is clogged, clean it. Connect the water line properly with the cold water inlet. Also, check that the water lines are not pinched or bent, and ensure they are not twisted or pinched by other objects.
  • M
    Mitchell MartinezAug 28, 2025
    How to clean the tub of my LG WM3770H*A?
    • I
      imooreAug 28, 2025
      To clean the tub of your LG Washer, empty the tub, insert bleach into the detergent dispenser, and select the Tub Clean cycle. If you prefer to skip the Tub Clean cycle, turn the CYCLE SELECTOR KNOB or push option buttons to select your desired cycle. Note that if you skip the Tub Clean cycle, the message will reappear until the tub has been cleaned.
  • H
    Hannah MoranAug 31, 2025
    What to do if there is a power failure with my LG Washer?
    • M
      Mario MercerAug 31, 2025
      If a power failure has occurred with your LG Washer, press the power button to turn off the washing machine and press it again to turn it back on.
  • W
    William FernandezSep 3, 2025
    What to do if the water supply doesn't stop in my LG Washer?
    • L
      Leon MarshallSep 3, 2025
      If the water supply does not stop in your LG Washer, unplug the power cord and contact your nearest LG service center.
  • M
    Michelle ColemanSep 6, 2025
    How to prevent staining in LG WM3770H*A?
    • D
      David HuntSep 6, 2025
      If you experience staining with your LG Washer, make sure to load detergent into the detergent dispenser drawer. Remove the load immediately after it finishes. Always sort and separate dark colors from light or white ones, and heavily soiled items from lightly soiled ones.
  • L
    linda10Sep 9, 2025
    What to do if clothing gathers on one side of the LG Washer tub?
    • B
      bondcarolSep 9, 2025
      If an item of clothing has gathered on one side of the tub in your LG Washer, rearrange the items to help balance the load. Stuffed animals or mats can cause unbalance during spinning, potentially preventing the washing machine from draining. Rearrange knitwear to balance the load and try draining again. When washing blankets, put one in at a time.
  • M
    Mr. Dustin DavisSep 12, 2025
    Why is the water level not controlled in my LG WM3770H*A?
    • T
      Tyrone TownsendSep 12, 2025
      If the water level is not controlled in your LG Washer, it may be due to the water level sensor not working correctly. In this case, unplug the power cord and contact your nearest LG service center.

Summary

Product Features

Inverter Direct-Drive Motor

Explains the motor's benefits: low noise, vibration, durability, and long lifespan.

Smart Diagnosis

Transmits technical data to a call center for fast and effective issue analysis.

Tub Clean

Monthly tub cleaning to maintain cleanliness and freshness.

Magnetic Door Plunger

Secures door slightly ajar for air circulation and interior drying.

Large Capacity Stainless Steel Drum

Durable, tilted drum for improved efficiency and easier access for large items.

Child Lock

Disables controls to prevent children from changing cycles or operating the machine.

Detergent Dispenser Drawer

Features a four-compartment drawer for easy separation of laundry products.

High Temperature Steam Cycles

Utilizes high-temperature steam to effectively remove tough stains.

Tag On Feature

NFC feature for diagnosing, downloading cycles, and checking status via smartphone.

Important Safety Instructions

Basic Safety Precautions

Essential safety measures to reduce risks of fire, electric shock, or personal injury.

Grounding Instructions

Importance of proper grounding for electrical safety and preventing shock.

Installation Safety Instructions

Precautions for safe installation to prevent shock, damage, or injury.

Use, Care, Cleaning, and Disposal Safety

Guidelines for safe operation, maintenance, cleaning, and disposal of the appliance.

Product Overview

Parts Identification

Visual identification of the main components of the washing machine.

Accessories

Lists included and optional accessories for the washing machine.

Control Panel Features

Details the functions of buttons and display elements on the control panel.

Installation

Installation Overview

Visual guide showing the sequence of installation steps for the washer.

Choosing the Proper Location

Guidance on selecting a suitable floor and space for washer installation.

Unpacking and Removing Shipping Bolts

Instructions for safely unpacking and removing shipping bolts and foam support.

Connecting Water Lines

Step-by-step guide for connecting hot and cold water supply hoses correctly.

Connecting the Drain Line

Instructions for properly connecting the drain hose to a standpipe or laundry tub.

Leveling the Washer

Procedure to ensure the washer is level for optimal performance and reduced vibration.

Using Non-Skid Pads (Optional)

Guidance on using optional pads to reduce vibration on slippery surfaces.

Connecting to Power Supply

Instructions for safely connecting the washer to a grounded power outlet.

Testing the Washer

Steps to perform a test cycle to verify proper installation and operation.

Preparation

Sorting Wash Loads

Guidelines for sorting laundry to prevent shrinkage, damage, and color transfer.

Fabric Care Labels Explained

Explanation of common clothing care label symbols and their meanings.

Sorting Laundry Guide

Chart and recommendations for sorting laundry by color, soil level, fabric, and lint.

Using Detergent and Fabric Softener

Guidance on selecting and using HE detergents and fabric softeners.

Loading the Dispenser Drawer

Instructions on how to add detergent and additives to the dispenser drawer.

Detergent Dispenser Compartments

Details on pre-wash, main wash, bleach, and softener compartments.

Operation

Using the Washer

Step-by-step guide on how to operate the washing machine.

Cycle Guide

Overview of available wash cycles, fabric types, and recommended settings.

Wash Cycles Explained

Detailed explanation of various wash cycles like Allergiene, Sanitary, Bright Whites.

Cycle Modifier Buttons Overview

How to customize cycle settings using modifier buttons.

Wash Temperature Selection

How to select the desired water temperature for a wash cycle.

Spin Speed Selection

How to select the desired spin speed for a wash cycle.

Soil Level Selection

How to select the appropriate soil level for the wash.

Operation Options

Details on Signal, Pre Wash, Rinse+Spin, Extra Rinse, Delay Wash, and Steam.

Cold Wash and Turbo Wash Options

Explains energy-saving Cold Wash and time-saving Turbo Wash options.

Setting Options During Cycle

How to add options like Child Lock during the wash cycle.

Add Garments and Fresh Care Features

How to add items mid-cycle and use the Fresh Care wrinkle prevention feature.

Maintenance

Regular Cleaning and Care

General cleaning instructions for the washer after use and in cold climates.

Thawing Frozen Lines

Steps to thaw frozen water and drain lines.

Tub Clean Procedure

Instructions for using the Tub Clean cycle to remove residue and odors.

Cleaning Dispenser and Filters

How to clean the detergent dispenser, water inlet filters, and drain pump filter.

Cleaning the Door Seal

How to clean the door seal to prevent dirt buildup.

Troubleshooting

Checking Error Messages

Explains common error messages and their appropriate corrective actions.

Before Calling for Service

Common problems, possible causes, and solutions before contacting support.

Specifications

Using Smart Diagnosis

Audible Diagnosis

Visual representation of the diagnosis feature.

Smart Diagnosis via Phone and Call Center

Steps for using the app and call center for troubleshooting.

Using the Tag On Function

Application Installation and Product Registration

How to download, install, and register the LG Smart Laundry & DW application.

Application Features

Overview of features like Cycle Set, Download Cycle, Smart Diagnosis, and Laundry Stats.

Warranty Information

Warranty Scope and Service Handling

Details warranty coverage, exclusions, and how to obtain service.

Limited Warranty Exclusions

Lists specific cases and conditions not covered by the limited warranty.

LG WM3770H*A Specifications

General IconGeneral
TypeFront Load Washer
Capacity4.5 cu. ft.
Energy Star CertifiedYes
Spin Speed1300 RPM
Weight200 lbs
SteamYes
Smart TechnologyYes
Wash Programs14
ColorGraphite Steel
Noise Level54 dBA

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