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It is normal for some dishwashers to run for up to two hours or more under certain conditions and on certain models. 1  On select models, the timer display or dial will stop for long periods (up to 1/2 hour) during the wash and dry cycles while the heater is activated. On models featuring Auto Hot Start, the cycle may be extended up to 20 minutes while the dishwasher heats the water.
Report Abuse. My GE model GDF520PGDCC takes 4 hours and 15 minutes for Normal cycle. There were only a few, not too dirty, dishes. The manufacturer told me that is the expected time. I also must further dry the dishes.est Answer: The 2008 Consumer Reports article on dishwashers had a cycle time range of 80 minutes at the low end to 145 minutes at the high.