My dishwasher will not drain when ran through full wash and not drain when push cancel/drain button either. When the pump tries to cut on, it makes a couple clicking sounds then just a hum, but nothing happens, no draining at all even on cancel/drain button. Already took everything apart and no blockages anywhere and check valve is clean too. All wash and rinse cycles work fine. Replaced the small drain pump thinking that was it but with new one dishwasher does the same thing. Still hear the couple clicks and then hum when push the cancel/drain button and no draining at all.