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LG WT1901CK User Manual

LG WT1901CK
56 pages
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WASHING MACHINE
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
CAUTION
MODEL : WT1901C*
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LG WT1901CK Specifications

General IconGeneral
Styletop load
Colorblack stainless steel
Washer Capacity5 cubic feet
Max Spin Speed950 revolutions per minute
Spin Speeds4
Number of Cycles12
Cycle Selectionspre wash+ normal, cotton/normal, tub clean, bulky/bedding, heavy duty, speed wash, delicates, bright whites™, towels, oxi-sanitize, waterproof, downloaded
Optionssoak, extra rinse, fabric softener, delay wash (up to 19 hours), child lock, custom program, pgm save, signal, rinse+spin, spin only, coldwash™, staincare™, water plus
Temperature Settings5
Temperature Selectionsextra hot, hot, warm, cold, tap cold
Soil Levelslight, normal, heavy
Control Panelelectronic
Delay Start / Endyes
Child Lockyes
Cycle Signalyes
Smart Homeyes
Wi-Fiwi-fi
Annual Energy Consumption130 kilowatt hours
Voltage120 volts
Current5 amperes
Weight and Dimensions IconWeight and Dimensions
Depth28.4 inches
Height40.1 inches
Width27 inches
Net Weight137.35 pounds

Summary

SAFETY PRECAUTION!

IMPORTANT SAFETY NOTICE!

Critical safety advisories for proper operation and to prevent injury or damage.

1. SPECIFICATIONS

2. INSTALLATION INSTRUCTIONS

2-1. HOW TO ADJUST LEVEL

Steps to ensure the washing machine is level for optimal performance and to minimize noise and vibration.

2-2. CONNECTING WATER SUPPLY HOSE

Detailed instructions for securely connecting the water supply hoses to the machine and the water tap.

2-3. CONNECT THE DRAIN HOSE

Guidelines for correctly attaching the drain hose to prevent leaks and ensure proper water removal.

3. OPERATING INSTRUCTION

3-1. IDENTIFICATION OF PARTS

Visual guide to identify all major components and controls of the washing machine.

3-2. BEFORE STARTING TO WASH

Essential pre-wash checks, including sorting clothes, checking pockets, and pretreating stains.

Water Temperature Selection

Guidance on choosing the correct water temperature for various fabric types and soil levels.

Detergent and Dispenser Usage

Instructions on selecting the right detergent and using the machine's dispensers for detergent, bleach, and softener.

Special Guide for Stain Removal

Comprehensive advice and methods for effectively removing common stains from clothing.

3-3. FUNCTION OF EACH BUTTON

Detailed explanation of the function and operation of every button on the control panel.

3-4. WASHING PROGRAMS

Overview of all available wash cycles, their recommended uses, and fabric compatibility.

3-5. CARE AND MAINTENANCE

Procedures for cleaning and maintaining the washing machine to ensure optimal performance and longevity.

4. SERVICE INFORMATION

4-1. DISASSEMBLY INSTRUCTION

Step-by-step instructions for disassembling major components of the washing machine for servicing.

Noise Filter, Valve, and Housing Disassembly

Guides the user through the process of removing the noise filter, inlet valve, and dispenser housing.

Top Cover and Lid Disassembly

Instructions for safely removing the top cover and lid assembly for access.

Tub Cover and Pulsator Disassembly

Procedure for disassembling the tub cover and pulsator for tub maintenance.

Service Tool Usage

Information on using specialized tools, such as a 38 mm wrench, for specific disassembly tasks.

Back Cover and Drain Pump Disassembly

Steps to remove the back cover and drain pump assembly for repair or replacement.

Damper Assembly Disassembly

Instructions for removing the damper assembly, crucial for shock absorption.

Rotor and Stator Disassembly

Guide on how to disassemble the motor's rotor and stator for inspection or replacement.

Door Lock Switch Disassembly

Steps for removing and servicing the door lock switch mechanism.

4-2. WIRING DIAGRAM

Detailed electrical schematic showing all connections for troubleshooting purposes.

4-3. TEST RUNNING WITHOUT WATER

Procedure for conducting operational tests on the machine without water to verify functionality.

4-4. TROUBLESHOOTING BY COMMON WASHING PROBLEMS

Solutions for frequent washing issues such as poor cleaning, stains, lint, and fabric damage.

4-5. TROUBLESHOOTING SUMMARY

A concise overview of common problems, their causes, and recommended solutions for quick reference.

4-6. PCB Picture

Visual identification of the main Printed Circuit Board (PCB) and its components.

4-7. TROUBLESHOOTING WITH ERROR CODE

Explains common error codes, their probable causes, and the necessary steps for resolution.

DRAIN ERROR Troubleshooting

Specific steps to diagnose and fix 'OE' drain errors, focusing on the pump and drainage system.

Locked Motor Error Troubleshooting

Procedures to resolve 'LE' motor errors by checking motor, stator, and related electrical connections.

Unbalance and Overflow Error Troubleshooting

Guide to troubleshoot 'UE' unbalance and 'FE' overflow errors, involving load balancing and water level checks.

Pressure Sensor Error Troubleshooting

Steps for diagnosing and fixing 'PE' pressure sensor errors, including component checks.

4-8. OTHER TROUBLESHOOTING

General troubleshooting tips for issues not covered by specific error codes, such as power failures.

NO POWER Troubleshooting

Diagnostic steps for resolving issues where the washing machine does not power on.

Power Button Functionality Issues

Troubleshooting steps for problems related to the power button and the display panel functionality.

5. COMPONENT TESTING INFORMATION

5-1. Filter Assembly (Line Filter)

Instructions for testing the line filter, including its circuit diagram and resistance values.

5-2. Door Lock Switch Assembly

Details on the operation and testing of the door lock switch mechanism.

5-3. STATOR ASSEMBLY

Information on testing the stator assembly, including winding resistance and circuit details.

5-4. PUMP MOTOR ASSEMBLY

Steps for testing the pump motor, including resistance checks and circuit diagrams.

5-5. INLET VALVE ASSEMBLY

Guide to testing the inlet valve assembly, covering its multiple solenoids and resistance.

5-6. THERMISTOR ASSEMBLY

Instructions for testing the thermistor, which monitors water temperature.

6. EXPLODED VIEW

6-1. EXPLODED VIEW OF TOP COVER ASSEMBLY

Visual breakdown of the top cover and its constituent parts.

6-2. EXPLODED VIEW OF OUTER CASE ASSEMBLY

Visual breakdown of the washing machine's outer casing and base structure.

6-3. EXPLODED VIEW OF TUB ASSEMBLY

Visual breakdown of the inner tub, pulsator, and associated components.

7. REPLACEMENT PART LIST

8. WIRING DIAGRAM

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