One of the most typical reasons your dishwasher refuses to drain properly is because of a obstruction in the drain tube. This drain line, or drain hose, flows water out of the dishwasher tub at the end of a cycle. If the drain line is clogged, water isn’t able to flow out of the tub. Reach the Service Experts Heating & Air Conditioning pros at 239-908-6991 for plumbing services in Fort Myers.