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Why Wont My Dishwasher Drain?

Understanding Dishwasher Issues

Our plumbers here at DR Plumbing Hillsboro have many routine calls that we get and one of the more common jobs that we get is that of a dishwasher not draining. Most people who have a dishwasher at home have a very busy schedule. They do not have the time to handwash their dishes. Hence they are worried when their dishwasher malfunctions. One of the most common problems faced by dishwasher owners is that the water in the dishwasher will not drain away. The dishwasher owner has spent a large amount to purchase the dishwasher and will want to find out Why Wont My Dishwasher Drain. They would like to know whether they should contact the appliance repair person to fix the problem or whether there are some easy solutions for the problem. A few tips for fixing the drainage problem at home are provided below.

Clogged filters

Though the exact design of the dish washer may vary depending on the model used, most of the dishwashers have a large basket filter and a small mesh filter near the sump. While washing utensils, the dirt from these dishes and utensils will pass over these filters and may coat them. The filters may get completed covered with muck, blocking the holes and prevent water draining. This problem can be fixed by removing these filters from he dishwasher. They can then be cleaned manually to remove all the dirt.The cleaned filters can be refixed in the right position so that water drains away.


One of the most common reasons why the water will not drain from the dishwasher is because the hoses used in the dishwasher are clogged. The dirty water from cleaning the dishes is drained away from the dishwasher using hoses. Since oil, butter, flour and other ingredients are used in the food , these ingredients may form a coating on the inner surface of the hose when they are being washed. Over a period of time the hoses may get blocked completely. A flashlight can be used to check the hoses, and if they are clogged, they should be cleaned to remove the coating, using a brush or similar material.

Other plumbing problems

In some cases, even after cleaning the hoses and filters, some dishwasher users find that the water is not draining away. In this case, there may be a problem with the plumbing system in the house, the pipes may be blocked at some stage. This is most likely because of debris or other material. Water may also not drain from other plumbing fixtures in the house if there is blockage. If the home owner is not able to fix this problem himself it is advisable to contact a professional pipe inspector for checking the pipes in the home. He will identify the blockage, and remove it quickly.


While the above solutions will fix most of the dishwasher drainage problems, there may be some instances when the drainage problem is not resolved. If the dishwasher is new and under warranty, the dishwasher company should be able to provide free help to fix the problem. Otherwise the dishwasher user should contact appliance repair staff for fixing the problem. They have the necessary tools to diagnose the drainage problem and fix it quickly.

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