Question about Bosch 24 in. SHY56A05 Stainless Steel Built-In Dishwasher

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Motor running noise

Whenever I push the on button, my dishwasher makes a humming sound like a running motor nonstop. I have tried flipping the breaker on it, and that had no effect. It seems like it is stuck in one of the cycle steps. I have noticed in the last few days that every once in awhile there would be standing water in the bottom of the dishwasher. I have 3 boys, so I just figured they must have interrupted the cycle in some way. I would start the cycle over and it would seem to complete. I also noticed an odor on completed cycles at times. It is stuck at the moment. Any help would be appreciated, especially a reset or something of this nature.

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Re: Motor running noise

The humming noise and the fact that there is standing water indicates that the motor is stuck and trying to break free. Is the odor that you mentioned smell like a heated coil? This is a common problem with dishwahsers; but does not have an easy fix. If you want to try, first disconnect the power supply and open the bottom panel (below the door), Normally held by some screws. Then with a flashlight see if you can see the motor housing. You can then reach under and manually rotate the motor to break it free. Do it a few times and then reconnect the power and run the dishwasher and hopefully it will work. -Vish

Posted on May 08, 2007

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bearings in the heater fan may get worn out or rust. If this happens, it may become very noisy, either grinding on the bearings, or scraping against the rust. If this happens you need to replace the fan motor. Sometimes, a fan blade may come loose, and you need to replace it.
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Pipes rattling or banging may be caused by a water hammer effect. Water hammer sounds are caused by a valve closing in the system, and yet the water in the pipe is still flowing because of its kinetic energy. The sound is caused by the water slamming into the closed section of pipe. A plumber can install an anti-hammer device.

Small objects can sometimes get stuck in the pump. When this occurs, you'll need to open the pump and then remove the item that is making the noise or replace the pump. The dishwasher pump is usually mounted directly to the motor and runs off the motor as well. The pump is also attached to the bottom of your dishwasher.
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After my dishwasher fills with water, and starts to run, the motor is making alot of noise. Its loud and I'm afarid to run it. Could the motor be bad?

Hello & Welcome to FixYa
If you hear a loud hum/buzz sound from the bottom of the unit then it is the motor that is bad and if the hum comes from the control then it is the timer/electronic control that is bad and needs replacement. However, after reading your question I believe it is the motor that needs replacement. Please get back to me if you have any other questions.


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