Kitchen Aid dishwashers are really good dishwashers. I own one and recommend them all the time to customers looking for a new dishwasher. However just like everything out there today they still have problems. You see no matter what brand dishwasher you buy it will eventually have an issue or two..
These newer Kitchen Aid dishwashers use an auxiliary drain motor to drain the water. So there is a main wash motor that sprays the water and cleans the dishes and a drain motor off to the side that drains the water. There are a couple different reasons why the dishwasher would stop draining.
1. Drain hose has obstruction: You can remove the drain hose where it connects to either the disposal or the standpipe and check for restrictions. Often times you will find a seed or some other object stopping the flow of water.