A dishwasher that doesn’t drain is a common issue faced in the kitchen. It is not necessary that the dishwasher is at fault rather the newly installed garbage disposal might be the reason as well. If you notice clogged water at the bottom of the dishwasher, the thing that should be done is to check for any blockage of the drain plugs present at the bottom of the dishwasher. Foodstuff, plastic paper, paper napkins may sometimes get clogged in the drain plugs thus preventing the dishwasher to drain properly.
This is the main reason why it is always recommended to scrape the leftovers and clean the dirty dishes before putting them in the dishwasher which can prevent clogging the garbage disposal. Clean the dishes with water before placing them in the dishwasher.
If you find the drain clean then consider checking the filters that are located either at the back or near the lower spray arm. Clean the debris clogged in the filter or around it. After checking the drain and the filter, check the draining tube through which the dirty water is dumped in the garbage disposal.
There are times when the food particles from the dishes get clogged in the tube that transfers dirty water from the dishwasher for disposal. Large food chunks get stuck in the pipe thus blocking the path.
The rubber tube present at the top drains dirty water from the dishwater to the disposal. It has a plastic plug that needs to be popped out, if the plug is not stuck out from the garbage port then the dishwasher will not be able to drain the dirty water and it will get clogged in the dishwasher itself.
Removing the plastic plug is very easy, start removing that and remember not to use the dishwasher when it is still connected to the electrical board. Release the clamp that holds the rubber tube and pulls the tube.
With the help of a screwdriver trying to find the plug, if the screwdriver gets all in the disposal then the problem is not with the disposal, but if you can feel the plastic plug stuck in between then you have got the solution to unclog the drainage of your dishwasher.
Try to punch the plastic out with the help of the screwdriver and if needed you can also take the help of a hammer through which a tapping force will be applied on the screwdriver that can push the plastic cup out. Keep in mind to remove the plastic completely from the circular hole.
Now unplug the disposal and drain all the leftover tiny pieces of plastic. After the disposal is cleaned properly you should replace the hose again, plug in the disposal and after following this process the dishwasher will now drain properly. The new garbage disposal is usually blamed for clogging the drain of the dishwasher.