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Beco D3421FW Gives off a loud bang and sometimes blows the circuit breaker

My daughters Beco D3421FW dishwasher is causing great problems, about half way through a cycle for no reason it gives a loud bang, and eventually after several bangs it will blow the circuit breaker. I am not an expert but have had a good look and cannot tell exactly where in the machine the banging is coming from. When at the back of the machine it sounds as though it is at the front, and when at the front I would say it is at the back. I have had a good look at all the gubbins underneath and the wires and controls inside the door. There are no signs of anything burnt or damaged that I can see. Jim

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  • jimannie Nov 09, 2008

    I do not understand! what part of the power supply?

  • jimannie Nov 09, 2008

    I tried to rotate the motor when I was under the machine and it seemed to be free. the bang is best described as an electrical blowout

  • jimannie Nov 15, 2008

    Hi I have checked the motor again. it seemed perfectly sound and stable and looked in good condition. A neighbour has helped me out and found the problem. It was the interference suppressor where the power wires come into the machine that was faulty. I have ordered a new part and the dishwasher seems to be going fine now. Many thanks for your help.

    Regards Jim

  • jimannie Nov 16, 2008

    Why do you write back and say the motor is loose, when I have already replied saying the motor is fine and that I have fixed the problem with the help of my neighbour. As I have already said it was the interference suppressor that was wrong. My neighbour had the same problem with his dishwasher several years ago. Regards Jim

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Many times a complaint of noises ( grinding or scraping ) can be traced to a cracked impeller in many of the common motor and pump assemblies used today. Sometimes a poor washing complaint is common after this wash impeller has cracked. Remove power first before investigating. The motor shaft has started to rust and swells out and this swelling cracks the upper impeller. Most times a new seal and impeller kit can cure this complaint but sanding and cleaning of motor shaft is required before replacing the new seals and impellers.

Posted on Nov 09, 2008

  • mmechanics Nov 09, 2008

    http://www.applianceaid.com/impeller.htm...


    also check out this link for more detailed help with diagrams.


    also have a look
     Have a look to make sure something has not fallen into the pump assembly, sometimes a hard piece ( like a pit ) or small utensil can fall into the pump and make a grinding style of a noise.

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The motor assembly is loose. You will have to get this tightened or replaced. I would call a professional repairman to have this fixed.

Posted on Nov 09, 2008

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This is the motor , which is near the center of the dishwasher would and can make noises if something came loose and when it comes to that part of the cycle it will jump , bump and if the motor locks then the circuit breaker or fuse would go , so there is something seriously wrong and it will need to be taken apart to see what is going on in there
can you do this?

Posted on Nov 09, 2008

  • jason Nov 10, 2008

    can you spin the motor by hand to see if you hear any grinding ? any water drips?

    also what cycle was the washer at when this happened?

  • jason Nov 16, 2008

    glad you got it fixed

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Hi!!!

try to open the power supply?

Posted on Nov 09, 2008

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