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White-Westinghouse Dishwasher overflowing

If your White-Westinghouse dishwasher is overflowing, start with the most likely cause: a bad water inlet valve that is not shutting off when the tub reaches the proper fill level. This is a common reason a dishwasher overfills with water, especially if you notice water dripping in when the door is open or water collecting in the bottom between cycles. Next, check the main control board, since a shorted board can keep sending power to the water inlet valve and cause a dishwasher water level too high condition. A cracked lower wash arm assembly can also throw water toward the door and make a dishwasher overflowing problem look like a leak. After that, rule out too much detergent or the wrong detergent, which can create oversudsing, and inspect the float switch to make sure it is not stuck or failed. On some models, the control board may also be at fault for continued valve operation. Enter your White-Westinghouse dishwasher model number on RepairClinic.com to find the exact water inlet valve, main control board, lower wash arm assembly, control board, or float switch for your specific machine.

01 - White-Westinghouse Dishwasher Water Inlet Valve

The water inlet valve is an electrically-controlled valve that opens to allow water to enter the dishwasher. Depending on the model, the valve stays open either for a set length of time or until the dishwasher has enough water. However, if the water inlet valve doesn’t shut off after the dishwasher has enough water, the dishwasher will overflow. If water drips into the dishwasher when the door is open, or if water collects at the bottom of the dishwasher while it is not use, you may need to replace the water inlet valve.
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02 - White-Westinghouse Dishwasher Main Control Board

A dishwasher's main control board provides power to nearly every electrical component in the dishwasher. If the control board continues to send power to the water inlet valve during the drain cycle, the dishwasher could overflow. While this is not that common of a problem, you can inspect the board for signs of burning or a shorted-out component. You can also use a multimeter to test the water inlet valve for incoming power during the dishwasher's cycle.
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03 - White-Westinghouse Dishwasher Lower Wash Arm Assembly

If the lower wash arm has a crack or split on the side it can cause water to splash out the bottom of the door, giving the impression that the dishwasher is overflowing. Inspect the wash arm assembly for any damage and replace if necessary.
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04 - Wrong type or incorrect amount of detergent

Make sure to use the proper dishwasher detergent. Use the proper amount of detergent for your water hardness; too much soap in soft water can cause oversudsing and leaking.
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05 - White-Westinghouse Dishwasher Control Board

A dishwasher's control board provides power to nearly every electrical component in the dishwasher. If the control board continues to send power to the water inlet valve the dishwasher could overflow. While this is not that common of a problem, you can inspect the board for signs of burning or a shorted-out component. You can also use a multimeter to test the water inlet valve for incoming power during the dishwasher's cycle.
Common

06 - White-Westinghouse Dishwasher Float Switch

The float switch actuates in order to prevent the dishwasher from overflowing. If the float switch is defective or stuck, it might not stop the dishwasher from overflowing. If the float switch is defective, replace it.
Common

Frequently Asked Questions

Why is my White-Westinghouse dishwasher overflowing?
How do I know if the water inlet valve is causing my White-Westinghouse dishwasher to overfill?
Can a float switch cause a dishwasher to overflow?
Why is my White-Westinghouse dishwasher leaking from the door and looking like it is overflowing?
How do I find the right overflow part for my White-Westinghouse dishwasher?