The dishwasher has started to hum or whine several times during the cycle and even after the cycle is finished. This KitchenAid model does not have a macerator and the filters are not clogged. It fills, washes and dries properly.
Sounds like you have a bearing going out. It could be in the system pump or the rotating washing arms. I would suggest getting ahold of Kitchenaid's customer support and relay when during which cycle the noise occurs and they should be able to identify whats going wrong.
Testimonial: "I believe I have located the problem. This KitchenAid dishwasher has a vent fan located high in the door. That is exactly where the noise originates and continues after the cycle is complete, probably while it continues to dry. I will replace the "Vent", part #W10462768, and report back. As information, searching online to try to find or get a solution to this issue has been an unusual disappointment. People want to help but generic answers related to dishwashers in general rather that this dishwasher in specific is not helpful."
SOURCE: Hum in Kitchen Aid Dishwasher Model 8531529.
Hi The hum sound that you hear is from the motor that is not
working or is about to go out, the motor should be replaced. Hope this
helps...please post back for further assistance. Daniel
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As noted below I found the problem - a faulty 'vent' - and it is as quiet as ever. See testmonial, posted in the wrong place below, for the part number. In hindsight, it should have been obivious that it was the vent fan that comes on to dry the dishes because the noise continued after the washer completed the cycle and was continuing to vent the machine.
Vent fan to vent the machine even when the machine is off(?)
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