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Whirlpool
Dishwasher

Model # DU9420XX0 Official Whirlpool dishwasher

Here are the diagrams and repair parts for Official Whirlpool DU9420XX0 dishwasher, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 92 parts  |
Dishwasher Circulation Pump Gasket (replaces 302371, 661633, 8057506) 717000
#16

Pump and motor diagram

Dishwasher circulation pump gasket (replaces 302371, 661633, 8057506)

Part #717000

This item is not returnable
$30.11 | 
17% OFF Phone Price : $36.11
In Stock
Dishwasher Motor Wire Harness 8271507

#NI

All parts diagram

Dishwasher motor wire harness

Part #8271507

$79.12 | 
7% OFF Phone Price : $85.12
In Stock
O-ring 95080
#6

Pump and motor diagram

O-ring

Part #95080

The manufacturer no longer makes this part, and there's no substitute part

Sleeve 302705
#20

Pump and motor diagram

Sleeve

Part #302705

The manufacturer no longer makes this part, and there's no substitute part

Handle 300086
#20

Dishrack diagram

Handle

Part #300086

The manufacturer no longer makes this part, and there's no substitute part

Extension 3369531
#45

Tub assembly diagram

Extension

Part #3369531

The manufacturer no longer makes this part, and there's no substitute part

Console Trim 3369324
#22

Frame and console diagram

Console trim

Part #3369324

The manufacturer no longer makes this part, and there's no substitute part

Spacer Panel 3368979
#18

Frame and console diagram

Spacer panel

Part #3368979

The manufacturer no longer makes this part, and there's no substitute part

Dishwasher Motor Start Relay 3369447
#24

Tub assembly diagram

Dishwasher motor start relay

Part #3369447

The manufacturer no longer makes this part, and there's no substitute part

Instructions Instruction LIT3367007

#NI

All parts diagram

Instructions instruction

Part #LIT3367007

The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your dishwashers

Choose a symptom to see related dishwasher repairs.

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Why won't my dishwasher fill?

Main causes: water supply problem, stuck overfill float, clogged water inlet valve screen, water inlet valve failure…

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Why won't my dishwasher drain?

Main causes: clogged kitchen sink drain, clogged drain hose, drain check valve damaged, drain pump failure, control syst…

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Why does my dishwasher door drop open too fast?

Main causes: broken door spring, damaged or broken door hinge…

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Why can't I adjust the dishwasher rack height?

Main cause: damaged rack height adjuster…

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Why isn't my dishwasher getting dishes clean?

Main causes: improper loading, low water temperature, improper detergent dosage, detergent dispenser failure, spray arm …

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Why won't my dishwasher start?

Main causes: light switch beside the sink turned off, lack of power, bad dishwasher door switch, control system failure,…

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Why don't my dishes get dry?

Main causes: not using rinse aid, rinse aid dispenser failure, broken heating element, malfunctioning vent, drying fan f…

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Why does my dishwasher stop mid-cycle?

Main causes: broken door latch, tripped circuit breaker, broken heating element, faulty vent fan, sensor failure, contro…

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Why is my dishwasher noisy?

Main causes: glass or popcorn kernel stuck in the chopper blade, drain line vibrating against the cabinet, debris in was…

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Most common repair guides to help fix your dishwashers

These step-by-step repair guides will help you safely fix what’s broken on your dishwasher.

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How to replace a dishwasher high-limit thermostat

How to replace a dishwasher high-limit thermostat

Follow these steps to replace the high-limit thermostat in your dishwasher if prevents the heating element from heating.…

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Repair difficulty
Time required
 30 minutes or less
How to replace a dishwasher door outer panel

How to replace a dishwasher door outer panel

If your dishwasher door is dented or you want it to match your cabinets or other appliances, this guide shows how to rep…

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Repair difficulty
Time required
 15 minutes or less
How to replace a dishwasher thermal fuse

How to replace a dishwasher thermal fuse

A completely dead control panel often indicates that the thermal fuse on the electronic control board is blown; follow t…

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Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your dishwashers

Use the advice and tips in these articles and videos to get the most out of your dishwasher.

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5 Holiday Cleaning Tasks Essential to Boosting Your Home’s Image

5 Holiday Cleaning Tasks Essential to Boosting Your Home’s Image

Get tips on completing essential holiday cleaning tasks to brighten your home.…

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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