Can I keep running the equipment with this fault active?

Generally no. Faults on Appliance units are emitted when a sensor, safety, or control circuit is outside its operating envelope. Running through an active fault risks compressor, heater, or control-board damage. Diagnose and clear the fault first.

What part is most commonly replaced for KitchenAid Dishwasher Float Switch Replacement - Signs & How-To?

The most frequently replaced parts for KitchenAid Dishwasher Float Switch Replacement - Signs & How-To are listed in the Parts Reference section of this guide with OEM part numbers and typical price ranges. Check the table for direct replacements.

Is KitchenAid Dishwasher Float Switch Replacement - Signs & How-To a DIY repair or do I need a technician?

Sensor swaps, fan motor replacements, and condenser cleaning are typical DIY-level repairs. Anything involving refrigerant, gas, or high-voltage (>240V) work requires a licensed technician for both safety and code-compliance reasons.

KitchenAid Dishwasher Float Switch Replacement - Signs & How-To

Q: What does KitchenAid Dishwasher Float Switch Replacement - Signs & How-To mean?

Dishwasher won't fill, stops filling too soon, or triggers overfill protection. Replacing the float switch or overfill control restores safe, normal fill operation.

Q: How do I fix KitchenAid Dishwasher Float Switch Replacement - Signs & How-To?

Follow the step-by-step diagnosis below. The most likely fix is identified by checking power, sensor resistance, and control-board signals in order — using a multimeter and the part numbers documented in the parts reference table.

KitchenAid Dishwasher Float Switch Replacement — What This Part Does

The float switch (also called the overfill switch or flood switch) is the safety device that tells the control board to stop filling when water lifts the float in the base of the dishwasher. When the float rises, the switch changes state and signals the machine to shut off the inlet valve. This prevents overfilling and water damage.

The switch fails when contacts wear out and no longer open or close reliably, when debris or soap buildup blocks the float so it can’t move freely, or when moisture and corrosion damage the wiring or connector. A failed switch means the control board doesn’t see the correct signal, so the dishwasher may refuse to fill, stop filling prematurely, or throw an overfill fault even when the tub is dry.

Jump to Replacement Steps

Signs It Needs Replacing

Dishwasher will not fill at all The control sees the float as already up (stuck closed switch) and refuses to start the fill cycle.
Fill stops too soon, leaving dishes dirty The switch opens prematurely or the float is physically blocked partway up, cutting off water before the correct level is reached.
Overfill or flood protection fault code displayed The control detects that the float/switch circuit is closed when it should be open, triggering a safety lockout.
Float visibly stuck, hard to move, or crusted with buildup Soap scum, mineral deposits, or debris prevent the float from rising and falling freely in its housing.
No continuity change when float is pressed down Testing the switch terminals with a multimeter shows the contacts do not change state when the float is actuated, confirming internal failure.
Water pooling in the base pan under the dishwasher A leak has lifted the float or damaged the switch and wiring, and the overfill circuit is signaling a fault even after the leak is dried out.

How to Replace It

Disconnect power to the dishwasher at the breaker or unplug the unit, and turn off the water supply valve under the sink or at the wall.
Remove the lower access panel or toe-kick at the bottom front of the dishwasher by pulling it straight out or unscrewing the fasteners.
Locate the float assembly in the base pan directly below the tub, usually a round or square plastic dome with the switch mounted underneath or to the side.
Lift the float by hand to check that it moves up and down freely without binding or grit, and look for soap buildup, debris, or water stains in the housing.
Unplug the wire harness from the float switch, then use a multimeter set to continuity or ohms to test the switch terminals while pressing the float or switch actuator down and releasing it.
If the meter does not show a clear change in continuity (open to closed or closed to open) with float movement, the switch has failed and must be replaced.
Release the retaining clips, tabs, or screws that hold the old switch to the base pan or float housing, lift it out, and press or screw the new switch into place until it clicks or seats firmly.
Reconnect the wire harness to the new switch, check that the float still moves freely and that no debris remains in the base pan, and inspect any gaskets or seals for damage or leaks.
Reinstall the lower access panel, restore power and water, and run a short rinse cycle to verify that the dishwasher fills to the correct level and stops cleanly without fault codes.

The Part You Need

Part	Notes
KitchenAid dishwasher float switch / overfill control switch	Amazon \| Common part numbers include W11545764, WPW10195039, WPW10102495, 8282619, and 8193506 (float switch and housing kit). Find your exact model and serial number on the label inside the door frame or on the side of the tub, then verify the correct replacement part number with a KitchenAid or Whirlpool parts supplier before ordering.

If this part is failing you may also see one of these codes:

When to Call a Pro

If you find standing water in the base pan, see evidence of an active leak, or discover damaged wiring beyond the float switch connector, call a professional appliance technician to trace and repair the leak source and inspect related seals and gaskets. If the new switch does not clear the fault code or the dishwasher still will not fill correctly after replacement and thorough cleaning of the float mechanism, the control board or inlet valve may also be faulty and should be diagnosed by a tech with a wiring diagram and proper test equipment.