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Dishwasher won't fill

If your dishwasher won't fill, start with the parts and checks most likely to stop water from entering the tub. The most common cause is a failed or clogged water inlet valve, since that valve has to open before any water can flow in. Next, check for an object stuck under the safety float in the front corner of the tub, because a blocked float can make the dishwasher think the water level is already too high. After that, look at the main control board, make sure the household water supply shut-off valve under the sink is fully open, and test the float switch, which can cut power to the water inlet valve if it is stuck or defective. A bad control board can also cause a dishwasher not filling with water. If your dishwasher won't fill, has dishwasher no water, or seems to have a dishwasher water inlet valve problem, matching the right part matters. Enter your model number on RepairClinic.com to find the exact replacement water inlet valve, float switch, main control board, or control board for your specific dishwasher.

01 - Dishwasher Water Inlet Valve

The water inlet valve opens to allow water to enter the dishwasher. If the water valve is clogged or defective, water will not flow into the dishwasher. Water inlet valves are not repairable—if the valve is defective, you must replace it.
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Top Solution

02 - Object stuck under the safety float

Some dishwashers have a safety float in the front corner of the tub to prevent the dishwasher from overfilling with water. If an object is stuck under the float, the dishwasher may not fill with water. If you find anything stuck under the float, remove it and the dishwasher should start filling properly.
Top Solution

03 - Dishwasher Main Control Board

A dishwasher's main control board provides power to nearly every electrical component in the dishwasher. A faulty board may be unable to supply power to the water inlet valve, preventing it from opening and allowing the necessary water to fill the tank.
Highly Likely

04 - Water supply valve turned off

You should confirm that the dishwasher's water supply shut-off valve is in the "On" or open position. The water supply shut-off valve is usually located under the sink and is connected to the hot water line.
Highly Likely

05 - Dishwasher Float Switch

The float switch is a safety designed to shut off the water inlet valve if the dishwasher is overfilling. If the float switch is defective or stuck, it might stop the dishwasher from filling correctly. You can use a multi meter to test the float switch for continuity. If the float switch is defective, replace it.
Highly Likely

06 - Dishwasher Control Board

A dishwasher's control board provides power to nearly every electrical component in the dishwasher. A faulty board may be unable to supply power to the water inlet valve, preventing it from opening and allowing the necessary water to fill the tank.
Common

07 - Water Supply Problem

Over time, calcium deposits can build up in the water supply valve or in the small filter screen inside the water inlet valve. If the water inlet valve is clogged with sediments, the dishwasher won't fill properly. Before working on the water line, first shut off the water supply. Inspect the valve to determine if it is clogged. Also, the inlet valve requires good water pressure to function properly. You can check the water flow at the kitchen faucet to help determine if the home's water pressure is sufficient or not.
Less Common

Frequently Asked Questions

Why is my dishwasher not filling with water?
How do I know if the dishwasher water inlet valve is bad?
Can a stuck float or bad float switch keep a dishwasher from filling?
My dishwasher has power but no water comes in. Is it the control board?
How do I find the right dishwasher fill parts for my model?