Kit Guide: Fixing a dishwasher that isn't draining


A common problem with dishwashers can be that they sometimes don't drain all the water away properly.

In this guide, we'll go through what can cause it, and how to get it fixed.

Check your dishwasher's filters


The filter for your dishwasher is under the bottom rack of the dishwasher, and over time the filter can get clogged up, which stops the water draining properly.


Pull the bottom rack out of the dishwasher.


Unscrew the filter from the bottom floor.


Pour a jug of clean water into the open drain to check that water is going through the pipes. If it's not, there might be a blockage further down the drain, and this'll need a repair.


If the water drains fine, rinse out the filter with warm tap water to remove any build-up of lint, soap particles, food and other gunk.


Screw the cap back into the dishwasher, and put the bottom rack back in.

Test the dishwasher again with a normal wash cycle, if it still doesn't work, arrange a repair with our experts here.

Check the waste disposal unit


If you have a waste disposal unit next to your sink, it'll normally use the same drainage pipe as a dishwasher. If it gets clogged, it might affect the dishwasher too.

You can try clearing it by pouring a cleaning agent down the drain, through the dishwasher's and waste disposal's filter. Leave it for 24 - 48 hours to try and break down the blockage before testing again.

Replace the water pump


If there doesn't seem to be anything blocking the water, there might be a fault with your water pump instead. This is the bit of your dishwasher that pumps the water away during a wash, and if it stops working you'll normally find it stops draining.

Hopefully that's everything you need to know, but if you need any extra help, or need to arrange a repair, you can get in touch with our Team Knowhow Experts here.

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