Warning: Disconnect power before servicing.
ErrBase

Whirlpool Dishwasher Won't Start: Causes and Fixes

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

WhirlpoolDishwasherSeverity: 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?

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

Common Causes

  • Primary Whirlpool-specific cause
  • Secondary common cause
  • Tertiary cause
  • Less common cause

Symptoms You May Notice

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

Can you reset a Whirlpool dishwasher to clear the WONT-START code?

Unplug for 60 seconds. Some Whirlpool 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 Whirlpool-specific cause for won't start

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

2

Check secondary causes common across all dishwasher brands but

3

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

Frequently Asked Questions

How much does it cost to fix a Whirlpool dishwasher won't start?
Most Whirlpool dishwasher 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 Whirlpool dishwasher won't start?
If the dishwasher is under 8 years old and the repair is under 50% of replacement cost, repair is worthwhile. Whirlpool has a standard 1-year warranty.
Can I fix Whirlpool dishwasher won't start myself?
Many Whirlpool dishwasher issues are DIY-fixable with basic tools. Water-related repairs may require turning off the water supply.

Models Known to Experience WONT-START Errors

This repair applies to most Whirlpool dishwashers with this error code. Common model numbers include:

WDT730PAHZ, WDT970SAHZ, WDF520PADM

Last verified for technical accuracy on March 16, 2026