After your dishwasher cleans your dishes, the water in your dishwasher should drain out of your dishwasher. When you open up your dishwasher after it has completed its cycle, the bottom of the dishwasher should not be filled with water. If the bottom of your dishwasher is filled with water, or if there is always a puddle of water left behind after your dishwasher has completed its cycle, you have a drainage issue. Depending on the way that your dishwasher is made, a drainage issue could be caused by a variety of different issues.
1. Valve Flapper
The valve flapper or the check valve is located inside of your dishwasher. It is located at the bottom of your dishwasher and goes over your drainage outlet. The purpose of the check valve is to only allow dirty water out of your dishwasher. You don't want your dishwasher to release water when it is washing your dishes, you only want it to release dirty water.
Your drainage issues could be caused by a valve flapper that is not opening all the way when it is time for the water to drain. First, check and make sure that there is nothing stuck in the valve flapper or obstructing it in any way. If there is, remove it. If that doesn't fix the issue, you may need to replace the valve flapper.
2. Pump Belt
If you have an older dishwasher that is driven by a pump with a visible belt, issues with the belt can cause your dishwasher not to drain water properly. Check the belt and make sure that it is properly on track. Look at the belt closely as well and see if it is starting to wear down. If it is starting to wear down or seems like it is stretched out, you will need to replace the belt. Simply purchase a new belt, remove the old belt, and slip the new belt into place.
3. Drainage Hose
Another culprit behind the water sitting at the bottom of your dishwasher could be the drainage hose. If the drainage hose becomes clogged up or kinked, water is not going to be able to flow properly through the drainage out, leaving you with a puddle of slow draining water at the bottom of your dishwasher after you use it.
Food can clog up your drainage hose if your food chopper is not working properly. If you have been doing construction, the hose for your dishwasher may have been moved and became kinked.
If your hose is clogged or kinked, generally the best thing to do is simply replace the drainage hose. If your hose wasn't working because it was clogged with food, you should also check the condition of your food chopper in your dishwasher as well to ensure that it is working properly.
These are the most common reasons that a dishwasher stops draining water properly. There could be other reasons that your dishwasher stops draining water properly as well. Contact a company like Hudson Appliance Center for more information and assistance.