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Why is my Kitchenaid dishwasher model KUDS01DJSS0 pump making loud humming noise? Pump motor suddenly began making loud humming noise when running. (not so bad when draining).

I opened up the interior pump/drain and grinder assemblies and cleaned out accumulated crud, bits of broken glass, and a few small rocks. Re-assembled and ran the machine. noise level has not changed.

Posted by joe_hoover on

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Curt Mueller

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Some dishwashers have a soft food disposal inside. If something is hung up, it will grind or hum for a long time. If this is the problem, it will eventually go away.

Posted on Jun 24, 2020

  • joe_hoover Jun 29, 2020

    Thanks. I dug deeper and found defective impeller gasket and cracked plastic impeller shaft. Replaced both and operating normal again.

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My samsung dishwasher has a constant buzz that occurs during start up and lasts through all of the cycles. I saw where there is an electrical noise filter and did not know if that could be the cause.

No a noise filter is a different kettle of fish. That stops electrical interference noise from affecting your television, radios and electrical devices.

The most likely source of the hum is the start capacitor on the motor, or the motor itself.

https://www.google.com/search?q=samsung+dishwasher+start+capacitor

This has a different idea

Humming or Grinding If your Samsung dishwasher makes noise when starting that sounds like a low hum, it's part of normal function. The motor makes this sound as it operates throughout the wash cycle. However, a dishwasher making loud humming noise or grinding sounds could mean that debris is caught in the drain pump.

Samsung Dishwasher Making Noise? Follow These Tips

This says the drain pump, but the drain pump only runs to empty out so it wouldn't do it all the time.

https://kitchenbuds.com/dishwasher-guides/samsung-dishwasher-making-grinding-noise/

Lots of other ideas and videos

https://www.google.com/search?q=samsung+dishwasher+humming

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Kitchenaid kuds02frss1

The wash pump and drain pump are different. So it is likely the wash pump is choked and trips or the motor is faulty.

http://www.searspartsdirect.com/partsdirect/part-model/KITCHENAID-Parts/Dishwasher-Parts/Model-KUDS02FRSS0/0593/0130000/W0602076/00008?blt=06&prst=&shdMod=#

It is likely the flap valve (item 5) or the chopper (item 6) are damaged and could be replaced before you get to the wash motor.
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I have a Kenmore top loading large capacity washer model 1028882791. It began washing as usual then began to making a loud humming sound. The agitation stopped. It only makes a loud humming sound. I...

The humming sound is coming from the drive motor running but unable to drive the agitator nor the basket to spin. The drive motor is definitely running as the drain function works because of the fact that drain pump is directly coupled with the rear spline of the motor. The drain pump works in either direction as long as the motor runs. The problem is obviously a broken motor coupler which transfers the mechanical energy of the motor to the transmission. The solution then is to replace the broken coupler. Click on the link below for the detailed step-by-step procedure in replacing the motor coupler.

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Hi, I had this exact same problem. In my situation it turned out to be the pump that pumps out all of the used water. It was rubbing up against the floor so that every time it turned on it made a loud vibrating sound. I just reached under the washer and put a piece of rubber between it and the floor and it solved the problem.

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I saw this post because I am considering buying the same model you have. Other than the noise problem you have, what do you think of it?

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If the unit is just humming and then cuts itself off, you could have a defective motor. However, this same symptom could be caused by something being caught in the pump assembly.
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