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Frigidaire FDB520RHB Dishwashers : We bought this dishwasher about 3 months ago. Today I ran the washer before I left to do errands and when I returned, I believe the washer had finished its cycle. But about an hour later, I noticed it had started up on its own? It then proceeded to run for almost 3 hours before my husband canceled the cycle. We were kind of waiting to see if it would stop on its own, which is why we let it go so long. I think it usually takes about 1 1/2-2 hours to wash. Could someone please tell me why it would run for so long? What would go wrong to let it go so long and is there anyway to fix it? It's so irritating since we really just got it. Thank you so much.

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  • Dishwashers Master
  • 3,247 Answers

Try to run the dishwasher on a short cycle like rinse and see if it finishes the cycle.

It is likely the heater or hot water temperature is not reaching the desired level and this could cause the extended wash cycle. Feel water temperature inside dishwasher after some time. If cold then it is the heater not working. Perhaps try without Heat Dry Cycle. That will also extend the cycle if heater is not working well.

see cycle diagrams in the page 2 of this sheet. Gives you and idea how Heater Delay affects cycle times.

Posted on Apr 21, 2013

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: Kenmore Dishwasher #587.... doing nothing but heat dry

The problem appears to stem from the float and float switch. The float is a mushroom shaped plastic part that resides on the bottom left, just inside the door. It appears that the float does not release the float switch, causing the dishwasher to think it is full of water, and won't allow the dishwasher to fill. It's a relatively straight forward repair, but even with a new part, the same scenario is likely to repeat itself until the float or float switch is modified by Kenmore.

Posted on Nov 01, 2007

futureloginn
  • 734 Answers

SOURCE: Dishwasher runs for a long time

If your dishwasher's cycle times are too long, check these:

Water pre-heating
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

  • 1 Answer

SOURCE: Dishwasher keeps running & won't clean dishes

If bottom arms is falling of then the assemly is wrong. Pull eveyrthing out and put the arem in before the other parts. reassemble and twist the horseshoe piece till it locks. that should keep the arm in place

Posted on Mar 09, 2009

  • 1 Answer

SOURCE: dishwashwer won't start and can't reset to restart

Check the float. (dome shaped thing inside the washer) Mine was stuck but as soon as I lifted up on it and then reseated it I was able to return to normal. Almost too easy. Saved $!

Posted on Apr 23, 2009

tattootech2
  • 72 Answers

SOURCE: Frigidaire dishwasher won't end cycle - will run

I would say the resettable thermostat has failed. There is a thermostat which senses the water temperature, and when it fails, it causes the dishwasher to run constant. Replace the thermostat underneath the dishwasher and that should cure problem. Part number is 154290204 (I know the number off by heart, that's how often it happens!)

Posted on Apr 07, 2010

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