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LG WT7700HVA User Manual

LG WT7700HVA
55 pages
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WASHING MACHINE
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
CAUTION
MODEL : WT7700H*A /01
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 © 2015 LG Electronics Inc. All rights reserved. Only training and service purposes.
CONFIDENTIAL
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LG WT7700HVA Specifications

General IconGeneral
TypeFront Load Washer
Energy Star CertifiedYes
Smart FeaturesYes
TurboWash TechnologyYes
Steam TechnologyYes
Smart ConnectivityWi-Fi

Summary

Safety Precautions

Important Safety Notice

Critical safety warnings and precautions for servicing the appliance.

Washing Machine Specifications

Installation Instructions

How to Adjust Level

Step-by-step guide to properly level the washing machine for stable operation.

Connecting Water Supply Hose

Instructions for securely connecting the water supply hoses to the appliance.

Connecting the Drain Hose

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

Operating Instructions

Identification of Parts

Identifies key components of the washing machine with labels and diagrams for user reference.

Preparation for Washing

Guidance on preparing laundry, sorting, and loading for optimal washing results.

Washing Process Details

Explains water temperature, detergent use, dispenser operation, and stain removal techniques.

Control Panel and Washing Programs

Details on control panel buttons, function selection, and available wash cycles.

Care and Maintenance

Instructions for routine cleaning, maintenance, and preventing damage to the appliance.

Service Information

Disassembly and Component Access

Detailed steps and precautions for disassembling various washing machine components for repair.

Wiring and PCB Information

Electrical schematic, PCB layout, and component identification for diagnostic purposes.

Troubleshooting Procedures

Comprehensive guide for diagnosing and resolving common problems, error codes, and malfunctions.

Component Testing Information

Filter Assembly (Line Filter) Testing

Procedures for testing the function and resistance of the line filter assembly.

Door Lock Switch Assembly Testing

Steps to test the door lock switch for proper operation and electrical resistance.

Stator Assembly Testing

Guidelines for testing the stator assembly's windings for correct resistance values.

Pump Motor Assembly Testing

Instructions for testing the pump motor's resistance and functionality.

Inlet Valve Assembly Testing

Methods for checking the resistance of the inlet valve solenoids for proper operation.

Heater Assembly Testing

Procedures for testing the wash heater's resistance to ensure proper heating functionality.

Thermistor Assembly Testing

Steps to test the thermistor's resistance at various temperatures for accuracy.

Exploded Views of Components

Exploded View of Top Cover Assembly

Diagram showing disassembled parts of the top cover assembly for identification.

Exploded View of Outer Case Assembly

Diagram illustrating the disassembled components of the washing machine's outer casing.

Exploded View of Tub Assembly

Diagram detailing the disassembled parts of the inner and outer tub assemblies.

Troubleshooting Summary

Wiring Diagram and Error Codes Summary

Consolidated wiring diagram and summary of error messages, test modes, and causes.

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