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Why do I keep getting mildew build up in my dishwasher?

I have a Kenmore dishwasher model 665.17533202. I keep getting black mildew build up inside my entire dishwasher. I run it at least every other day if not daily. I always use the Smart Wash cycle. I have tried many different cleaners but nothing seems to work. Is there something that I am doing wrong or is there something wrong with the machine itself? I have never seen a dishwasher get like this. How do I get rid of the mildew and prevent it from returning?

Dishwashers , Kenmore , Building Supplies
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2 Answers from these members:
Lyle W
It is unusual to have a mildew build up in this type of dishwasher. Here are some tips that may help:

Check the drain configuration of your dishwasher according to the installation instructions. A drain problem could cause water to siphon back into the dishwasher and could cause mildew problems.

Make sure that you are using rinse aid. This will help the water drain off of the dishes.

If you are not using a heated drying cycle, try using the heat to dry out the tub better.

Try cracking open the door between uses to circulate some air through the dishwasher between cycles.

Make sure that the dishwasher is filling properly. It should fill to within 1/4" to just touching the bottom of the heating element.

To remove the mildew, you may need to run an empty wash cycle with liquid chlorine bleach added. Run a second empty cycle after this to completely rinse all bleach out of the dishwasher. If this does not remove the mildew, then you may need to wipe down the inside of the dishwasher with a strong solution of liquid chlorine bleach and water. Then you can run an empty cycle with bleach and another empty cycle with water to rinse the dishwasher out.

A failure in the pump could prevent your dishwasher from spraying properly. If you suspect a problem in the pump area of your dishwasher, you can use the procedure in this link of a previous answer to access and check the sump area:

How do I clean the filter on my dishwasher?

If you need more help with this problem, resubmit your question with additional details.
by Lyle W Earned 3,484 community points in Kenmore
September 29th, 2008
0 votes
Manage My Life
I have the same exact issue - had to reconfigure my drainage line as suggested by service man - use "machine cleaner" , rinsing agents, hard water agents, do all that and the problem interesting thing the service guy said is that the newer machines have a small separate pump for drainage compared to older models - all said and done, I
still have to resort to a "bleach wash" every month - have had a good many machines over the years but NEVER run into this problem before...have to think it's a design/mechanical defect
by Manage My Life
August 27th, 2013
0 votes
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