LG WM3400C Series - User Manual

Questions and Answers

S
Scott WilliamsJul 29, 2025
What to do if my LG Washer shows an IE INLET ERROR?
- B
  Brandy GarnerJul 29, 2025
  If your LG Washer displays an IE Inlet Error, it could be due to several reasons: * Ensure the water supply faucets are fully open. * Check that the water inlet hoses are not kinked, pinched, or crushed. Take care when moving the washer. * Clean the inlet filters, referring to the MAINTENANCE section. * Verify that your household water pressure is adequate by checking another faucet. If the flow is low, disconnect the water inlet hoses from the washer and flush them. If the flow remains low, contact a plumber. * Avoid using leak-limiting hoses, as they may falsely trip and prevent the washer from filling.
E
Eric TrujilloAug 8, 2025
Why does my LG WM3400C Washer beep when I press a button and then nothing happens?
- J
  Jessica JohnsonAug 8, 2025
  If your LG washer beeps when you press a button but nothing happens, the Control Lock feature might be activated. To deactivate it, switch on the washer, then hold down the button labeled 'Control Lock' for approximately 3 seconds.
W
Willie MayAug 19, 2025
Why does my LG WM3400C Washer make loud banging noises when filling with water?
- A
  Annette OconnellAug 19, 2025
  If your LG Washer makes loud banging noises while filling with water, it's likely due to a plumbing issue known as water hammer. You can reduce this effect by installing a water hammer arrestor, available at local hardware or home improvement stores.

Summary

IMPORTANT SAFETY INSTRUCTIONS

Safety Messages

Explains safety alert symbols and their meanings (WARNING, CAUTION).

WARNING STATEMENTS

Basic precautions to reduce risks like explosion, fire, death, and electric shock.

CAUTION STATEMENTS

Lists precautions to reduce minor injury, malfunction, or product/property damage.

PRODUCT OVERVIEW

Product Features

Describes the components and accessories of the washing machine, subject to manufacturer changes.

INSTALLATION

Before Installing

Provides an overview and preliminary steps before installing the washer.

Choosing the Proper Location

Details requirements for selecting the ideal installation spot, considering space and flooring.

Unpacking and Removing Shipping Material

Instructions on how to safely remove shipping materials and prepare the washer for installation.

Connecting the Water Inlet Hoses

Guides on how to connect the hot and cold water supply hoses correctly.

Connecting the Drain Hose

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

Leveling the Washer

Steps to ensure the washer is level to minimize vibration and noise.

Final Installation Check

Procedures to verify the washer is properly installed and connected, including power supply.

OPERATION

Before Use

Essential steps and safety checks before operating the washing machine for the first time.

Operation Overview

A step-by-step guide to sorting laundry, adding detergent, selecting cycles, and starting the wash.

Loading the Washer

Tips for correctly loading laundry, including general advice, bulky items, and small items.

Options and Extra Functions

Explains how to use additional cycle options and customize wash settings for specific needs.

SMART FUNCTIONS

Using LG ThinQ Application

Guide on connecting and using the LG ThinQ app for remote control and monitoring.

Smart Diagnosis Function

Information on using the diagnostic feature to troubleshoot appliance issues.

MAINTENANCE

Regular Cleaning

Instructions for routine cleaning of the washer's interior, exterior, and door seal.

Periodic Maintenance

Recommendations for periodic checks and cleaning to ensure optimal performance.

Cleaning the Drum

Steps for cleaning the washer drum to prevent odors and residue buildup.

Cleaning the Dispenser Drawer

Instructions for removing and cleaning the detergent dispenser drawer.

Cleaning the Drain Pump Filter

Guide on how to clean the drain pump filter to prevent clogging and ensure proper draining.

TROUBLESHOOTING

Before Calling for Service

Initial checks and FAQs to resolve common washer problems before contacting support.

Error Messages

Explains common error codes and their possible causes and solutions.

UE UNBALANCE ERROR

Addresses issues related to unbalanced loads, including small loads and heavy/light item mixing.

DE DOOR OPEN ERROR

Solutions for the door open error message, ensuring the door is secured.

LIMITED WARRANTY (USA)

TERMS AND CONDITIONS

Outlines the terms, conditions, and scope of the limited warranty for the product.

Dispute Resolution Procedure

Explains the arbitration process for resolving disputes between the consumer and LG.

LIMITED WARRANTY (CANADA)

TERMS AND CONDITIONS

Outlines the terms, conditions, and scope of the limited warranty for the product in Canada.

Canadian Dispute Resolution

Explains the arbitration process for resolving disputes under Canadian law.

LG WM3400C Series Specifications

General

Type	Front Load
Capacity	4.5 cu. ft.
Energy Star Certified	Yes
Spin Speed	1300 RPM
Number of Wash Cycles	14
Steam Technology	Yes
Smart Diagnosis	Yes
Color	White
SmartThinQ Technology	Yes
TurboWash	Yes
Allergiene Cycle	Yes
Steam Wash	Yes
Width	27 inch
Height	39 inches
Depth	30.25 inches