Dishwasher runs for an unusually long time or never seems to finish the cycle.

Safety first: Disconnect power before testing heating components.

• 1. Check water temperature: Run hot water at the sink until it is hot before starting the dishwasher. Aim for at least 120°F (49°C).
• 2. Clean sensors and filters: Dirty filters and sensors can cause the control to extend cycles. Clean filters and the sump area thoroughly.
• 3. Test heating element: If the dishwasher never heats, test the element and high-limit thermostat for continuity and replace if faulty.
• 4. Avoid opening door: Opening the door frequently during the cycle can cause the control to extend time to reheat water.

If cycles remain excessively long with proper water temperature and a working heater, the control board or sensors may need professional diagnosis.