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Lg Washer Won't Start: Causes and Fixes

Quick Answer

LG washer won't start: check Control Lock (hold Lock button 3-5 seconds). Then check that the door or lid is fully closed (listen for the latch click). Also check the outlet and breaker.

Lg washer won't start has brand-specific causes related to Lg's proprietary technology and component design.

LgWasherSeverity: mediumDifficulty: intermediate75% DIY Success
Time to Fix
15–90 min
Difficulty
intermediate
Parts Cost
—
Tools Needed
Multimeter, Screwdriver set

What Does the WONT-START Code Mean?

Lg washer won't start - see the detailed diagnosis steps below for Lg-specific causes and fixes.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Lid/door lock not engaging30%
Control Lock active20%
Thermal fuse blown15%
Control board failed15%
Water supply not detected10%
Start switch worn10%

Symptoms You May Notice

  • Won't Start on Lg washer
  • Performance degradation
  • Unusual sounds or behavior
  • Error code may appear

Can you reset a Lg washer to clear the WONT-START code?

Unplug for 60 seconds. Some Lg models have specific reset sequences - check the diagnostic mode entry above.

Tools Required for Diagnosis

MultimeterScrewdriver setFlashlight

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

1

Check the most common Lg-specific cause for won't start on Lg washers

Check the most common Lg-specific cause for won't start on Lg washers. See the detailed guide above.

2

Check secondary causes common across all washer brands but with

3

If basic checks do not reveal the cause, run the brand

Frequently Asked Questions

How much does it cost to fix a Lg washer won't start?
Most Lg washer won't start repairs cost $100-400 depending on the cause. Simple fixes (cleaning, resetting) are free. Part replacements range from $10-200 plus $100-200 labor.
Is it worth repairing a Lg washer won't start?
If the washer is under 8 years old and the repair is under 50% of replacement cost, repair is worthwhile. Lg extended the Linear Compressor warranty to 10 years on refrigerators.
Can I fix Lg washer won't start myself?
Many Lg washer issues are DIY-fixable with basic tools. Water-related repairs may require turning off the water supply.

Same Fix Works on These Brands

Lg shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

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Models Known to Experience WONT-START Errors

This repair applies to most Lg washers with this error code. Common model numbers include:

WM3900HWA, WM4000HWA, WT7300CW

Last verified for technical accuracy on March 15, 2026