Dishwasher not draining? Check these 5 parts first

Written by David Lewis
6 Min read
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How to fix dishwasher not draining

The most common issue with dishwashers is when they won’t drain properly. If your problem is with the dishwasher not draining, it’s important to understand what components could be causing the issue, and how you can fix it. Below are some of the most common causes of a dishwasher not draining, as well as solutions for each problem.

How do I fix my dishwasher not draining problem?

The most common cause of a dishwasher not draining is an issue with the filter. The filter should be emptied and re-installed in order to fix the problem. If the dishwasher still won’t drain after emptying the filter, then there may be an issue with the drain hose, pump, or other components.

What are the possible causes of a dishwasher not draining?

The most common cause of a dishwasher not draining is a clogged filter. This can usually be fixed by emptying the filter and re-installing it. Other possible causes include a clogged drain hose, a defective pump, and other less likely components such as the timer, drain solenoid, and check valve flapper.

How can I unclog a dishwasher drain hose?

Dishwasher not draining Water - Dishwasher full of Water Fixed

If the problem is a clogged drain hose, then you can use either vinegar and baking soda or a drain snake tool to clear out the clog. Begin by locating the blockage in the drain hose. Then, pour a mixture of vinegar and baking soda into the hose to create a fizzing action that will loosen and dissolve the blockage. You can also use a drain snake tool to clear out the clog.

How do I empty and reinstall a dishwasher filter?

To empty and reinstall a dishwasher filter, you should begin by removing the lower dish rack. There should be a plastic tab at the front where you can unclip the filter. Carefully pull out the filter, then clean out any debris, food particles, and dirt using a soft brush. Finally, re-insert the filter, making sure that it is securely clicked back into place.

What is the best way to clear out clogs from a dishwasher drain hose?

The best way to clear out a clog from a dishwasher drain hose is to use vinegar and baking soda or a drain snake tool. Begin by locating the blockage in the drain hose. Then, pour a mixture of vinegar and baking soda into the hose to create a fizzing action that will loosen and dissolve the blockage. You can also use a drain snake tool to clear out the clog.

How can I tell if my dishwasher pump is defective?

If the filter and drain hose are not the culprits and your dishwasher is still not draining, then the pump may be defective. To test the pump, you will need to dismantle the dishwasher and use a multimeter to check the pump. If the pump is not getting power, then it needs to be replaced.

What tools do I need to test a dishwasher pump?

You will need a few basic tools to test a dishwasher pump. These include a Phillips head screwdriver, a putty knife, a pair of needle nose pliers, and a multimeter. With these tools, you can safely and easily test the pump to determine if it is defective.

How do I replace a faulty dishwasher pump?

Replacing a dishwasher pump is a job best left to a qualified appliance technician. However, if you’re feeling confident, you can attempt to replace the pump yourself. First, you will need to disconnect the dishwasher from the power source, then unscrew the screws that hold the pump in place and pull it out. Then, you will need to insert the new pump and reconnect the power source.

Are there any other components that can cause of a dishwasher not draining?

Yes, there are other components that can cause a dishwasher not to drain properly. These include the timer, drain solenoid, and check valve flapper. If all other solutions fail, then you may need to replace these components.

How do I replace defective dishwasher components such as the timer, drain solenoid, and check valve flapper?

Replacing defective dishwasher components is a job best left to a qualified appliance technician. However, if you’re feeling confident, you can attempt to replace them yourself. First, you will need to disconnect the dishwasher from the power source, then unscrew the screws that hold the component in place and pull it out. Then, you will need to insert the new component and reconnect the power source.

Are there any tips I should know to prevent a dishwasher from not draining?

Regular maintenance is the key to preventing a dishwasher from not draining. Make sure to regularly check and clean the filter, as well as inspect and clean the drain hose. Additionally, you can use a dishwasher cleaner on a monthly basis to help keep the dishwasher in good condition.

What type of dishwasher cleaner should I use?

When choosing a dishwasher cleaner, you should opt for one formulated specifically for dishwashers. These cleaners usually contain a mixture of detergents, enzymes, and other ingredients that are safe for dishwashers and won’t damage delicate components.

How often should I use a dishwasher cleaner?

You should use a dishwasher cleaner at least once a month to keep your dishwasher running smoothly. These cleaners help to remove dirt, food particles, and other debris from the dishwasher, which can clog the filter and cause a dishwasher not to drain properly.

How do I troubleshoot a dishwasher if it is still not draining after following all the steps?

If your dishwasher is still not draining after following all the steps listed above, then it may be time to call an appliance technician. They can help diagnose and repair any underlying issues with your dishwasher, ensuring that it is running in optimal condition.

How can I find a reliable appliance technician?

The best way to find a reliable appliance technician is to ask family and friends for referrals. Other options include searching online or checking with local appliance stores for recommendations. When you find a technician, make sure to read reviews or ask about their experience and qualifications to ensure they are the right person for the job.

Do I need to turn off the power before attempting any repairs on my dishwasher?

Yes, it is always wise to turn off the power to your dishwasher before attempting any repairs. This helps to prevent electric shocks and also ensures that the dishwasher doesn’t power up while you are making repairs.

Is it possible to attempt some repairs on my own without professional help?

Yes, it is possible to attempt some repairs on your own without professional help. However, it is important to understand what you are doing and how each component works. If you are not comfortable trying to do the repair yourself, then it is best to call an experienced appliance technician.

Can I use regular household products to clean a dishwasher instead of a dishwasher cleaner?

No, it is not recommended to use regular household products to clean a dishwasher. These products can sometimes damage delicate components and cause further problems. Instead, opt for a dishwasher cleaner specifically designed for dishwashers.

Are there any products I can use to help prevent clogs in my dishwasher drain hose?

Yes, there are a few products available on the market specifically designed to help prevent clogs in dishwasher drain hoses. These products usually contain enzymes and detergents that help break up and dissolve food particles, grease, and other debris.

Is there anything else I can do to maintain my dishwasher and help prevent it from not draining?

Yes, in addition to using a dishwasher cleaner once a month and following all the tips listed above, you should also run hot water through your dishwasher to help clean out any debris. This will help ensure that the dishwasher is running in optimal condition.

Dishwashers not draining properly is a common issue, with the most common cause being a clogged filter. This can be fixed by emptying and re-installing the filter, however if this doesn't work then there could be an issue with the drain hose, pump, timer, drain solenoid or check valve flapper. To fix any of these, either a mixture of vinegar and baking soda, a drain snake tool, or a qualified appliance technician may be needed as well as preventative maintenance such as cleaning the filter and using a dishwasher cleaner.

Expert Tip:

Before attempting any repairs on a dishwasher, always be sure to read through the manufacturer’s instructions carefully. Additionally, it’s best to make sure that you turn off the power source before beginning any repair work – this will help to ensure safe and efficient operations.

Appliances made simple. 

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