Do you have water in the bottom of the dishwasher and it’s not draining? When you open the dishwasher door after washing the dishes, there is still water at the bottom of the dishwasher. What could be the problem? There are many potential causes of this issue. The most likely reason is an object clogging or blocking the drainage system. Read the tips below and you will have your dishwasher working in no time.
Garbage disposal knockout plug issue
The no draining issue can be because of something called a knockout plug. If the plug was not removed when installing a new dishwasher, the dishwasher will not drain. Solve this problem by knocking out the plastic plug. Removing the knockout plug allows water to drain from the dishwasher into the garbage disposal drainage pipe.
How to Remove the Knockout plug from food disposal
Is the drain hose kinked or bent
Make sure the drain hose has not been kinked or bent. If the dishwasher drain hose is bent water will not be able to exit the dishwasher. The drain hose can sometimes bend out of shape where it comes out of the dishwasher. You may have a clog in the drain hose itself that will need to be removed. Remove the drain hose on one end and inspect for clogs. Completely remove the drain hose from being the issue before making further adjustments to your dishwasher’s drainage system or checking the garbage disposer area.
Removing and cleaning a dishwasher’s drain hose
Be sure dishwasher filter is not clogged
Make sure food or debris isn’t clogging the drain at the bottom of the dishwasher. To relieve the dishwasher of any draining water problems, be sure to check that nothing might have built up around or in the drain.
How To Clean Your Dishwasher Filter
Check areas where the drain hose connects
Inspect directly under the kitchen sink where the drain hose connects with either an air gap (a pipe usually shaped like an upside down “L”) or the garbage disposal (usually installed into the disposal).
Check drainage system near dishwasher
There may be a clog in the homes drainage system causing the dishwasher to not drain. Check this quickly by running water from the sink and see if the sink water drains slowly. If so, you may have an issue with into the dishwasher, but the drainage pipes in your home.
High drain loop
A high-drain loop lets water out of a dishwasher even if an air gap isn’t present. If there is a buildup of water for an extended period, make sure that you have a high drain loop to prevent this. A high drain loop is created when the drain hose is makes a loop at least 18 inches above the floor. This is usually accomplished by attaching the drain hose to the underside of the counter. Dirty water from the sink can flow into a dishwasher without the installation of a high drain loop or air gap. The dishwasher drain hose should be directed to the house’s plumbing system either directly or through a minor air gap.
Keep dishwasher draining tips
Dispose of food scraps in the disposal more carefully. Use smaller pieces of food. The disposal should only be used for small solids, as large food pieces can clog the drainage which can lead to your dishwasher not draining.
Draining issues are common with dishwashers. When your dishwasher won’t drain, it can be confusing on how to troubleshoot the problem. We hope the steps above can help you find and fix the issue yourself. Even if you don’t know what’s wrong with your dishwasher not draining, we can help guide you and fix the problem! Let us know the exact issue in the comments below.
Allen is the author and creator of this website. He has years of experience with appliance repair, commercial food machinery maintenance, electrical, HVAC, plumbing, vehicle maintenance, and critical aviation related systems.