Dishwasher drains out the water right after filling

A malfunctioning float could cause the dishwasher to not fill with water. The float is located at the bottom of the dishwasher tub and acts as a safety device that prevents the dishwasher from over filling with water. The float rises with the water level in the dishwasher and when the proper level is reached, the float will trigger the float switch to turn off the water inlet valve. Check that there is no debris or foreign objects that might restrict the vertical movement of the float and that it engages the float switch located beneath the tub.