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How To Fix A Dishwasher That Won't Drain

How To Fix A Dishwasher That Won't Drain

If your diswasher isn't draining properly, this can be a major problem. If your machine isn't draining, it won't be cleaning your stuff properly either, as it just ends up sitting in dirty water. Not to mention, opening the door now becomes a major splash hazard. Here are some possible causes that can help you to diagnose and sfix your dishwasher that won't drain.

  • Thie first issue could the the drain basket. This has the job of catching food debris and slime, so of course naturally it can become clogged. Therefore, it is definitely recommended to clean it regularly to ensure water can flow freely from the dishwasher tub. To check if debris can be removed, straighten a wire coat hanger - or use something of the same nature - and poke it through the basket to see if the blockage can be dislodged. If this doesn't work, it could be the sump pipe underneath is blocked. Remove the drain basket by unscrewing the nuts to gain access and clean the sump pump. Hopefully this should solve your drainage problems.

  • The drain hose could also be the issue. This is hidden and can be found opening the lower front panel which is usually secured by clips or screws. If it is kinked, make sure it is straightened and water can flow freely through it. If it feels clogged, remove the hose (which is usually secured simply with a spring clip) and clean any debris from the inside. This can be done with a wire coat hanger or something of a similar nature. Be careful with the hose however as you do not want to damage it, which could then lead to leaking.

  • The pump is most likely to be directly connected to the motor at the bottom of the dishwasher. The pump does two jobs: the upper compartment pumps water into the dishwasher and the second lower compartment pumps it out to the drain. Obviously, if your pump isn't functioning properly, this could cause several problems, one being water left in the machine. Firstly, remove the upper section and then clean out any gunk or blockages from the lower impeller. Sometimes broken glass or plastic can prevent this impreller from turning, and therefore the pump can't do its job. If this still fails, you may need to replace your pump.

  • What's more, some machines have a belt that drives the pump. This belt can slip or become defective. If this is the case, the belt will probably need replacing.

  • Lastly, it could be your motor or timer that's causing the issues. Driving the pump that removes the water, if your motor is defective, then that can obviously cause problems. It is controlled by the timer located on the upper front panel. If you are fortunate to have a multi-meter, then you will be able to test if there is still continuity in power to the motor. You can access the motor through the bottom front panel. Set your multimeter to "Rx1" and place the probes to one terminal each. Your reading should be 0, or at least very close to 0. Next, place one probe on the metal housing of the motor and the other on each terminal in turn to check ground connection. Again, you should not revieve any reading. If this isn't the case for either of the tests, you will need to replace the motor. If it is the timer's fault, you can also test this with your multi-meter. Set it to ohms and "x1000". Place the probes to each wire that comes out of the timer, and if the reading is not between 2,000-3,500 ohms range, then it is the timer that will beed replacing as it is faulty.

To find spare parts compatible with your specific dishwasher, you will need the model (type) number. This is usually made up of a combination of numbers and letters and can be found on the type plate which can be located on the inside of the dishwasher door, or all the way at the bottom (under the door, almost on the floor). In our shop, if you search by this number, you will be shown all the parts we have available that are suitable for your machine.

Get In Touch

Let us know if this has helped you solve your problem on our Facebook. If you have any questions or queries about the spare parts you might need, then feel free to send us an email at, or get in touch with us via our contact form. Remeber to include your model (type) number so we can make sure we're searching for the right parts for you.

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