Question about Bosch Dishwashers
3 hours isn't "extremely" long. If you run a normal cycle, it should run about 2-2:30 hours normally with the drying cycle. Now if it's over 3 hours, that would be a problem. Make sure that when you open the door that there is a lot of steam coming out, because that is the only thing that can extend the cycle is if the dishwasher isn't heating the water. Unfortunately this is a very common issue and it means that your control board inside the door has failed. There is a relay on the board that shorts out. This relay sends power to the heater, so when it fails the dishwasher doesn't wash well and it will run forever trying to heat the water which will never happen.
Posted on Sep 14, 2013
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Posted on Jan 02, 2017
SOURCE: Dishwasher runs for a long time
If your dishwasher's cycle times are too long, check these:
Cycle not completing
Water pre-heating Yourdishwasher may pre-heat the water. If so, and if the water entering thedishwasher is cool, the heater may take up to half an hour to heat thewater.
To avoid the wait, increase the incoming watertemperature before turning on the dishwasher. Do that by running thekitchen sink faucet until the water runs hot. Or increase thetemperature of the hot water to the entire house at the hot waterheater.
Warning! To lessen the risk of scalding, don't set the hot water heater temperature higher than 120 degrees Fahrenheit.
Cycle not completing
Posted on Dec 12, 2008
SOURCE: dishwasher runs for 3 hours
You may be running the sani-wash or heated drying. The heat element in these things takes a long time.
Check these and turn them off - then try another wash cycle and time it to see - should be one hour or less
Posted on May 03, 2009
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