Replacing the Overfill Float Switch on a Dishwasher

The overfill float switch trips to shut the water fill valve if the water level gets too high. If the switch fails, it either won’t shut off the water, or it won’t let the dishwasher fill at all. If the dishwasher gets too much water or if it won’t fill at all, you can correct the problem by replacing the float switch.

Wear work gloves to protect your hands.
Now, let’s get started.
Unplug the dishwasher or shut off the house circuit breaker for the dishwasher. locking tab on
To verify that power is disconnected, make sure the control panel doesn’t light up when you push the buttons. Remove the Torx screws from the inner door panel.

Support the outer door panel with one hand as you remove the final screws so the outer door panel doesn’t fall.
Unplug the
Separate the outer door panel and control panel slightly from the inner door panel. Disconnect the user interface control wire harness from the control panel. Pull off the outer door panel and control panel. Using a nut driver, remove the screws that hold the bottom front access panel and toe panel in place.

Pull the access panel and the toe panel forward and remove them. Release the left locking tab on the overfill float switch housing and open the left side cover. Unplug the wire harness from the connector.

left locking

Release the right locking tab on the float switch housing and open the right side cover. Remove the overfill float switch.

Install the new overfill float switch and close the right side cover. Plug in the wire harness. Close the left side cover.

Position the toe panel on the dishwasher and then position the access panel in front of the toe panel. Insert the mounting screws and tighten the screws firmly. Reconnect the user interface control wire harness and attach the outer door panel and control panel to the inner door panel.

Reinstall the mounting screws. Reset the house circuit breaker or plug in the dishwasher to restore electrical power.