Question about Bosch 24 in. SHU53 Built-in Dishwasher

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Dishwasher Soap scum left on dishes

This is a fairly new machine. It leaves glass ware smoky and the interior of the machine is also covered in white scum. We have checked the usual, water temp is ok, & cleaned the filters. It uses water from a water softener. It also does not always clean the dishes very well, for example leaves a ring of coffee around the top of the cup and food stains on some dishes.

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  • PPixie Nov 09, 2008

    Thanks for the suggestion. I have used a commercial product to clean the machine that did a good job. I have improved the problem by turning the rinse aid dispenser down to the lowest possible setting but still get some residue on glasses.
    The next thing I tried was to switch from the cascade liquid to the electrasol tabs however this has some rinse aid in it as well. I think this product is better but still getting residue on glasses.

    The next thing I will try is to dilute the rinse-aid in the dispenser with water. Any comments on this approach?




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The problem is hard water. There is a new product out called The Dishwasher Filtration System. It filters the water going into your dishwasher leaving your dishes spot free with every load. It is very affordable and fits right under the sink. You will be amazed how sparkling your dishes look just after one load. You will love this product. Get it at

Posted on May 13, 2009

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I empty my dishwasher out and put a cup of clorox in the top sitting up and run a whole cycle. it helps clear out the scum build up in the dishwasher. try that

Posted on Nov 06, 2008

  • Kathi Ulett-saeger
    Kathi Ulett-saeger Nov 06, 2008

    try putting a cup of clorox sitting up in the top shelf and run a full cylce. it will help with any residue/scum left from dirty dishes. hope it helps



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