What should I do if the dishwasher seems to run for a very long time?

Check that the incoming water is warm enough by running hot water at the sink before starting a cycle. Verify the dishwasher is connected to a hot water supply. If the rinse aid dispenser is empty or set to '0', add rinse aid or change the setting. Cycle time can vary due to soil and water conditions, and sensors automatically increase time when heavy soil is detected. (Page 38-39)