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LG WM8100 User Manual

LG WM8100
55 pages
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WASHING MACHINE
SERVICE MANUAL
Before servicing the washer, Read the safety precautions in the manual.
CAUTION
MODEL : WM8100
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means),
publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you
have obtained the prior written consent of the LG Electronics entity from which you received this Service
Manual. The material covered by this prohibition includes, without limitation, any text, graphics or logos in this
Service Manual.
Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
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LG WM8100 Specifications

General IconGeneral
Capacity5.2 cu. ft.
Energy Star CertifiedYes
Spin Speed1300 RPM
Weight223 lbs
Steam TechnologyYes
Voltage120V
TypeFront Load
ColorWhite
Smart FeaturesWi-Fi Connectivity
Control TypeTouch

Summary

1. SPECIFICATIONS

2. FEATURES & TECHNICAL EXPLANATION

2-1. FEATURES

Key features of the washing machine including capacity, motor, and drum design.

2-2. NEURO FUZZY WASHING TIME OPTIMIZATION

How the machine optimizes wash time using water temp, selected temp, and load size.

2-3. WATER LEVEL CONTROL

Details the pressure sensor system for managing water levels in the tub.

2-4. DOOR CONTROL

Explains the door locking mechanism, safety features, and operation.

2-5. THE DOOR CAN NOT BE OPENED

Conditions under which the washing machine door remains locked.

2-6. DOOR LOCKED LAMP LIGHTS

Explains the conditions that activate the door lock indicator light.

2-7. CHILD LOCK

How to activate and deactivate the child lock to prevent unintended use.

2-8. WATER CIRCULATION

Describes the water recirculation system and its operation during cycles.

2-9. STEAM

Details the steam wash function for enhanced cleaning and suitable fabrics.

2-10. DRUM LIGHT

Explains the operation of the internal drum light during cycles.

3. PARTS IDENTIFICATION

4. INSTALLATION & TEST

STANDARD INSTALLATION

General guidelines for installing the washing machine on a flat, firm surface.

HOW TO CONNECT THE INLET HOSE

Instructions for correctly connecting the hot and cold water inlet hoses.

CONNECT THE DRAIN HOSE

Procedure for properly connecting the washing machine's drain hose.

CONNECT POWER PLUG

Guidance on safely connecting the power plug to the electrical outlet.

5. OPERATION

5-1. Control Panel Features

Overview of the control panel buttons, display, and selectors.

Option Button

Explanation of special function buttons like Steam, Pre-wash, and Child Lock.

Wash Temp. Spin Speed, Soil Level, Signal Button

How to adjust wash temperature, spin speed, soil level, and signal.

5-2. Cycle Guide

Details recommended cycles, fabric types, wash temps, and spin speeds.

5-3. Special Functions

In-depth explanation of functions like Fresh Care, Child Lock, and Drum Light.

5-4. Explanation of Each Process

Step-by-step breakdown of the washing machine's operational processes.

6. WIRING DIAGRAM / PROGRAM CHART

7. TEST MODE

7-1. SAFETY CAUTION

Essential safety precautions for entering and operating test modes.

7-2. LOAD TEST MODE

Procedure for entering and executing the load test mode for diagnostics.

7-3. HOW TO CHECK THE WATER LEVEL FFREQUENCY

Method to check water level frequency for troubleshooting errors.

8. TROUBLESHOOTING

8-1. SAFETY CAUTION

Crucial safety warnings to follow when performing troubleshooting.

8-2. ERROR MODE SUMMARY

List of common error codes, their symptoms, and causes.

8-3. TROUBLESHOOTING WITH ERROR

Guides for diagnosing and resolving specific error codes like Inlet Valve, Drain.

8-4. OTHER TROUBLESHOOTING

Troubleshooting for issues not related to specific error codes, like no power.

9. COMPONENT TESTING INFORMATION

9-1. FILTER ASSEMBLY (LINE FILTER)

Testing procedure and expected resistance values for the line filter.

9-2. DOOR LOCK SWITCH ASSEMBLY

Testing procedure for the door lock switch, including resistance and voltage.

9-3. Stator Assembly

Information on the stator assembly, its windings, and resistance testing.

9-4. PUMP MOTOR ASSEMBLY

Testing details for drain and circulation pump motors, including resistance.

9-5. INLET VALVE ASSEMBLY

Testing the inlet valve assembly for resistance and proper function.

9-6. HEATER ASSEMBLY

Testing the wash heater for resistance and its role in heating water.

9-7. THERMISTOR ASSEMBLY

Information on the thermistor sensor and its resistance at various temperatures.

10. DISASSEMBLY INSTRUCTIONS

CONTROL PANEL

Step-by-step instructions for disassembling the washing machine's control panel.

MAIN PWB ASSEMBLY

Guide for safely disconnecting and removing the main Printed Wiring Board.

DISPENSER ASSEMBLY

Instructions for disassembling the detergent and fabric softener dispenser.

NOISE FILTER

Steps to disassemble and remove the noise filter component.

CABINET COVER

Procedure for removing and disassembling the outer cabinet cover.

DOOR

Instructions for disassembling the washing machine's door.

DOOR LOCK SWITCH ASSEMBLY

Guide on how to disassemble and replace the door lock switch.

PUMP

Steps for disassembling the water pump assembly.

HEATER

Instructions for disassembling and removing the heater element.

WHEN FOREIGN OBJECT IS STUCK BETWEEN DRUM AND TUB

Procedure for removing foreign objects lodged between drum and tub.

LAMP ASSEMBLY

Instructions for disassembling the internal lamp assembly.

MOTOR/DAMPER

Details the disassembly of the motor rotor, stator, and damper components.

11. EXPLODED VIEW

11-1. Cabinet and Control Panel Assembly

Exploded diagram of the washing machine's cabinet and control panel parts.

11-2. Drum and Tub Assembly

Exploded diagram showing the drum, tub, bearings, and related parts.

11-3. Dispenser Assembly

Exploded view of the detergent dispenser and its components.

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