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Hum in Kitchen Aid Dishwasher Model 8531529. Stated last night. No hum when filling or draining - only during the wash cycle. Can still hear the water spinning inside during the wash cycle, but hum is loud. The water does fill & drain completely/correctly. Any ideas? Might this be an easy fix? or a likely repair man call? Thanks!!

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  • Caroline Roe Mar 24, 2011

    Thanks! - now I know it's not a quick fix & have an appt with a rapairman.

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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

Posted on Mar 21, 2011

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Posted on Jan 02, 2017

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If the dishwasher is loud during operation, and the noise is a continuous drone similar in speed to the circulation pump sound, it's likely that the circulation pump motor bearings have failed. Once this happens the circulation pump will have to be replaced, the bearings are not repairable.


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If the dishwasher is loud the motor bearings, drain impeller or wash impeller might have worn out. All three of these components are part of the pump and motor assembly. It may be possible to replace one of the impellers, but the motor bearings cannot be repaired. In that case the pump and motor assembly will need to be replaced.


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Wash Impeller

The wash impeller is a small, plastic blade. The motor spins the impeller forcing water through the spray arms to clean the dishes. If one or more blades has broken off of the impeller the dishwasher is loud. The impeller can also scrape against the pump housing if it is damaged, warped or bent.


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If the dishwasher is loud during operation, and the noise is a continuous drone similar in speed to the motor sound, it's likely that the circulation and drain pump motor bearings have failed. Once this happens the motor will have to be replaced, the bearings are not repairable.


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The water inlet valve is an electrically controlled water valve. When it is new, the water inlet valve is very quiet. Over time, the diaphragm inside the valve deteriorates and deforms. This deformation interacts with the water rushing in and can cause a loud vibration, buzzing, squealing or other noises. If the dishwasher is loud during the filling cycle, replacing the water inlet valve may solve the problem.

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