One of the most frequent reasons your dishwasher refuses to drain properly is on account of a blockage in the drain line. This drain line, or drain hose, sends water out of the dishwasher tub at the end of a cycle. If the drain line is clogged, water won’t flow out of the tub. Contact the Service Experts Heating & Air Conditioning pros at 919-578-4329 for plumbing services in Raleigh.