What causes a dishwasher pump to break?

Dishwashers are necessary equipment in contemporary houses because they clean dishes while saving time and energy for the homeowners. Dishwasher pumps, which are essential parts that are in charge of circulating water throughout the appliance, are prone to failure. What causes a dishwasher pump to break?

In this post, we’ll examine the most frequent reasons why dishwasher pumps fail and provide advice on how to keep your pump in good working order.

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How a Dishwasher Pump Works

Understanding how dishwasher pumps function is crucial before diving into their causes.

  • Dishwasher pumps are electric motors that circulate water through the machine’s spray arms, washing the dishes as a result.
  • Dishwasher pumps come in two varieties: circulation pumps, which move water around the appliance while it is in the wash cycle, and drain pumps, which remove water from the appliance when the cycle is complete.

Common Causes of Dishwasher Pump Failure

A dishwasher pump’s failure may be brought on by a number of circumstances, such as:

  • Food scraps and other debris may build up in dishwashers, clogging the pump and making it malfunction. These blockages may be caused by a filthy dishwasher, a lack of routine cleaning, or the use of non-dishwasher safe goods.
  • Dishwasher pumps, like any mechanical component, may degrade with time. The effectiveness of the pump may be decreased and it may finally fail due to worn or broken bearings or impellers.
  • The dishwasher pump may also stop working if the motor has electrical or mechanical issues. These problems might be anything from a burnt-out motor to a loose connection.

Signs of a Failing Dishwasher Pump

There are a number of indications that your dishwasher pump is malfunctioning, including:

  • A failed pump may emit peculiar noises, such as grinding or rattling sounds, which point to broken bearings or impellers.
  • A faulty pump is often indicated by a leaky dishwasher. Water may leak from the machine if the pump is unable to circulate it adequately.
  • If your dishes are not being cleaned correctly, it may be because of a faulty pump that is not circulating enough water to clean the dishes adequately.

Prevention and Maintenance

Maintaining the appliance’s lifetime and ensuring proper operation depend on preventing dishwasher pump failure. Some preventative actions include:

  • Cleaning your dishwasher on a regular basis can help prevent blockages from developing and guarantee that the pump keeps working properly.
  • You may avoid damaging the pump and other parts of the dishwasher by filling it according to the manufacturer’s recommendations and only using dishwasher-safe products.
  • Frequent maintenance may help find and resolve any problems before they lead to the pump failing. Every one to two years, it is advised to have a professional service your dishwasher.
  • If your dishwasher pump does go down, replacing it may be expensive and time-consuming. To make sure the dishwasher keeps working properly, it’s crucial to spend money on high-quality replacement components and have a professional install them.


In conclusion, dishwasher pumps are essential to the proper operation of your appliance, and their failure might necessitate costly repairs or replacements.

  • You may prolong the useful life of your dishwasher by being aware of the typical reasons of dishwasher pump failure.
  • If you are having any problems with your dishwasher pump, keep in mind to call a professional.

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