I don't use my dishwasher very often. Last night I decided to, and after it filled up with water, all the motor would do is hum. The manual that came with it says "dishwasher has not been used on a regular basis. If you do not use your dishwasher often, set it to fill and pump out once every week. This will help keep the seal moist." I need to know what to do now that it is full of water. How do I get it to drain, or better yet, to work again?