Dishwasher not draining, hoses/filter are clear

My dishwasher has stopped draining. I do not have an air gap or garbage disposal. I’ve removed the filter and drain hoses and they all appear clear - filter is clean and I can blow air through the hoses. With the drain hose removed from the pump, I can pour water into the dishwasher and it drains fine. The unit is new and just installed in Dec. 2012. What else can I check?

Hi,

Can you describe more specific how and where is the dishwasher drain hose connected please/

Gene.