Clean the filter and spray arms regularly to prevent clogs.
- Use hot water and a quality detergent for best results.
- Call a pro for electrical or motor issues, or replace an old unit.
Why is my dishwasher not cleaning dishes?
Several common issues cause poor cleaning. A clogged filter traps food and blocks water flow. Spray arms with blocked holes reduce water pressure. A faulty water inlet valve limits water fill. A broken heating element prevents hot water and proper drying. Detergent issues, like using old or wrong detergent, also matter. Loading the dishwasher incorrectly can block spray arms. Hard water can leave mineral deposits on dishes and parts.
How to fix a dishwasher that's not cleaning dishes
Start by cleaning the filter. Remove it, rinse it under running water, and scrub off debris. Next, check the spray arms for clogs. Remove them and clear any food particles from the holes with a toothpick. Run a hot water cycle with a dishwasher cleaner to remove grease and scale. Inspect the water inlet valve for blockages or damage. Test the heating element with a multimeter for continuity. Replace any faulty parts. Finally, ensure you use a quality detergent and load dishes so water can reach all surfaces.
How to prevent dishwasher cleaning problems
Clean the filter monthly to avoid buildup. Rinse dishes before loading to remove large food scraps. Use rinse aid to improve drying and reduce spots. Run hot water in the sink before starting the dishwasher to ensure it fills with hot water. Check the water softener if you have hard water. Regularly inspect spray arms for clogs. Avoid overloading the dishwasher. Use the correct detergent amount for your water hardness.
When to replace your dishwasher or call a pro
If you've tried basic fixes and dishes still come out dirty, you may need a professional. A faulty control board or motor requires expert diagnosis. Persistent leaks or strange noises signal serious issues. If your dishwasher is over 10 years old and repairs cost more than half the price of a new one, consider replacing it. Newer models are more energy-efficient and clean better. Call a pro for electrical or plumbing problems to avoid safety risks.