I have a 7 (?) year old dishwasher. It has done good work for a long time. Lately tho, it has started to emit a whining at the end of the pre-wash cycle. The old water seems to drain out but the fresh water does not come in. Thats when the whining starts. Last time I was able to get it going again by manually moving the dial ahead one notch.
Now today we ran the dishwasher and no problem. So the problem is intermittant, but i'll bet it gets progressively worse. Is it a timer problem??
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1) It could be a gasket somewhere starting to break down. Check your door seal.
2) Food particles could have gotten caught somewhere in the drain hose, or something, and then turned black with mold and bacteria, then when you wash, they get siphoned back into the dishwasher if the flap which composes the anti-siphon check valve on the drain hose is starting to stick open.
Try putting a cup of bleach in the top rack and run a complete cycle with no other dishes in it. Then, load up some plastic dishes and wash them as normal. See if that helps. If it does, replace your check valve.
Also, insure that your drain hose is looped up above the bottom of your sink to prevent debris from your garbage disposal backing up into your dishwasher.
I understand you have a 7 year old Kenmore dishwasher, which you want to know how to check the heating element to see if it's working. Typically, this is not a do it yourself job, as there are no step by step instruction manuals. I suggest contacting your local authorized technician for further assistance. They have been trained on your appliance and should be able to diagnose your appliance and determine if the heating element is working. Hope this is helpful.
did you pull the bottom cover off and watch it run it could be either thesupply line developed a leak or the drain tube has done the same or in most cases with dishwashers relatively old the pump has cracked in which case the washer is trash
I have a very similar problem. When I push a wash selection, every light on the panel shows up...and when I push Start, nothing happens. When I push cancel, it trys to drain, even tho no water is in there any more. Have you ever had an answer to your problem?