Common Dishwasher Drain Issues

Without a doubt, dishwashers are considered one of the most convenient and straightforward conveniences of modern daily living. It’s easy to load up the dishes and run a cleaning cycle while you spend your time completing other daily tasks. Most home and business owners don’t even think about their dishwasher until it stops working as it should.

Believe it or not, dishwashers have drains at the bottom of the appliance that can get clogged over time. As everyday items, such as food and other scraps, build up below your dishwasher, they can create clogs that limit your dishwasher’s performance. Let’s look at the most common dishwasher drain issues so you can be prepared when a problem occurs.

Common Dishwasher Drain Issues


Here are the most common causes of dishwasher draining issues:

1.   Dirty Filters

If your dishwasher stops working, one of the first things you have to check is the filter. Your dishwasher filter is one of the essential components of your system. If you want to ensure your machine continues to work efficiently, you need to clean your dishwasher filter periodically.  Remove excess food, soggy particles, and grease buildup from your filter.

When filters aren’t routinely cleaned, they can cause your entire system to stop working. In addition to regularly cleaning your filters, you should clean dirty plates and other items before placing them into the appliance. If you suspect an issue with your dishwasher filter, you need to take the following steps:

  • Find the filter and remove it carefully. Most filters are located at the bottom of your appliance below the spray arm.
  • Once you remove the filter, lift the mesh filter plate.
  • Check the lower pit to see if any food deposits are causing a blockage.
  • Take your dishwater filter and filter plate and run them under hot water to remove any buildup and debris.
  • If filters have a more stubborn buildup, you can use soapy water with a toothbrush to get rid of tough grime.
  • Lastly, replace the filters exactly as you removed them once they are clean.

2.   Blocked Drain Hose

If your filters aren’t the problem, the next thing to check is the drain hose. The drain hose is another critical element to your working dishwasher. It carries dirty water from your appliance to your outdoor waste system. It is typically connected to the drain line and the kitchen sink.

The drain hose can easily get clogged with food debris. It can also get kinked. You will need to remove the drain hose from the dishwasher and clear it to make it work. In some cases, you’ll need to replace the drain hose if the kink is significant.

3.   Damaged Drain Pump

Like your drain hose, the drain pump can get blocked by leftover food particles and built-up grease. This prevents the water from draining after each washing cycle. Any debris that’s left can find its way into your pump is build up around the impeller. Even worse, foreign objects like broken glass can slip in the drain pump and cause significant damage. You can typically hear the pump struggling when you turn your dishwasher on. To examine the drain pump, you need access to the bottom of the dishwasher. You should contact a professional plumber if you think your drain pump is the problem.

If you suspect you have a blocked drain, contact a plumber in Norco for help. Our reliable Ontario plumber company provides fast and affordable service.

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