What does a dishwasher float switch do?

The float switch is a safety device that monitors the water level inside the dishwasher tub. When the water reaches a predetermined level, the float rises and activates the switch, signaling the control board to stop filling and prevent an overflow.

Can a dishwasher run without a working float switch?

A dishwasher may not run at all if the float switch is faulty, as it might prevent the wash cycle from starting. Alternatively, a failed switch could lead to continuous filling and potential overflowing, which is a significant safety hazard that must be addressed.

Where is the float switch located in a dishwasher?

The float switch is typically located at the bottom of the dishwasher tub, often near the front. It is usually part of an assembly that includes a plastic float cup or disc that rises with the water level. Access often requires removing the lower access panel.

Dishwasher Float Switch Replacement Guide

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W10195039 Dishwasher Float Switch（1 Pack） Fit for Whirlpool KitchenAid Maytag Dishwasher WPW10195039 MS10-06 PS11750031

The package includes 1 pieces of the W10195039 dishwasher float switch.
The W10195039 switch serves as a replacement for AP6016738, PS11750031, W10734532, and WPW10195039.
The WPW10195039 switch is compatible with Whirlpool, KitchenAid, Maytag, Amana, Jenn-Air, and Inglis brands.
In the event that the water level exceeds the designated limit before the scheduled water fill cycle concludes, the WPW10195039 float switch will close the water inlet valve.
Tools required for installation: Phillips-head screwdriver, flat-head screwdriver.

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What the W10195039 does

The float switch is a safety device in a dishwasher that detects the water level in the tub. It signals the control board to stop filling when the water reaches a specific height, preventing overfilling and potential leaks.

Symptoms when this part fails

Dishwasher overfills
Dishwasher leaks from the bottom
Dishwasher does not fill with water
Dishwasher runs continuously
Dishwasher does not start a cycle

Compatibility

Fits the Kenmore family. Specifically:

Any unit originally equipped with OEM part number(s): W10195039.
Check the model/rating plate inside your appliance and compare it against the fitment table on the product listing before ordering — this guide does not list specific compatible models because Amazon does not provide verified fitment data through this pipeline.

Tools you'll need

Screwdriver (Phillips or flathead)
Pliers
Towels
Work gloves

Difficulty: Moderate · Time: 30-60 minutes

How to install the W10195039, step by step

Disconnect power to the dishwasher at the circuit breaker.
Turn off the water supply valve to the dishwasher.
Remove the lower access panel or kickplate at the front.
Locate the float switch assembly, usually at the bottom of the tub.
Disconnect any wiring connected to the float switch.
Release the clips or screws securing the old float switch.
Install the new float switch, ensuring it is properly seated.
Reconnect wiring, restore power and water, then test for leaks.