Cycle times are much longer than normal or seem to never finish.

Safety First: No internal access is required for basic checks.

• Preheat water: Run hot water at the sink until hot before starting the dishwasher.
• Use appropriate cycle: Heavy or sanitize cycles will run longer; choose a normal cycle for typical loads.
• Clean sensors: Run a cleaning cycle with dishwasher cleaner to remove film from sensors.
• When to call for service: If cycles run excessively long and dishes are still not hot or clean, the heater or sensors may need professional diagnosis.