Not draining dishwasher is going to spoil the relaxed and peaceful life of the owner. We recommend checking a dishwasher hose, it connects to a sink without a garbage disposal, an air gap. This part is installed on the top of the sink, right by the faucet. A small hose from the air gap connects to the dishwasher’s drain hose. This acts as a vent to prevent an air lock from forming in the drain hose, but occasionally, the air gap can become clogged with debris. To investigate, twist the air gap counterclockwise to remove it, and check it for gunk. Clean the air gap with water and a stiff brush, replace it, and run the dishwasher cycle again. After doing these manipulations, reset the dishwasher. In case of further troubles, call for a professional help.