Every time i wash dishes in the sink water goes back into the maytag dish washer. the drain from the dishwasher is connected to a disposal. this maytag dishwasher quite series 200 is only 6 months old. What is the problem ?

Two things can cause this problem:
1. The check valve in your dishwasher may be defective, allowing water and food debris to seep (or run) back into your dishwasher.
2. Your drain hose may not be "mounted up" the way it should be. Look under your sink. Look at how your drain hose is connected to your garbage disposal. If the hose runs down to the floor of your cabinet and into your dishwasher, that is wrong. Instead, it should be mounted up so that water from the sink and garbage disposal would have to flow up first to get into the dishwasher. If you do this, then even if you have a bad check-valve in the dishwasher, it will prevent the problem (or greatly reduce the problem) of dirty water flowing back into your dishwasher.

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Drain hose clogged or Not ran in the proper draining position, under the sink where the hose ties into the drain system or garbage disposal, the hose should be higher than the connection point, I have fixed this by tie strapping hose to the bottom of the counter or sink, hope that helps ?

When you open up the dishwasher is there still water in the bottom of the dishwasher????? The screen around the bottom could be dirty. Or the drain line could be restricted, if it drains back to the Garbage disposal make sure it is draining. Are you using hot water??? Check to see if the Arms are turning and the ports are not plugged with debrie.... If the drains are OK and the screen is clean...... I put in about a half gallon of white Vinegar in the wash cycle after it filled with water and used no soap and rewashed the dishes. I ran the Hot water faucet at the Kitchen sink till the water was good and Hot and then on the dishwasher used the heat water feature. It cleaned up the dishes and the dishwasher. I did this on a Whirlpool dishwasher but it should work for any make of dishwasher. Hope this helps... I had to do this several time to get all the dishes back clean

We really need your model number to help you properly. In the mean time you can check you sink connection and air gap for obstructions. Usually the cover just pulls up and off then you unscrew the cap to expose the drain tube for the dishwasher. More often than not if the unit fills and washes but leave soap on the dishes a clogged drain line is the problem. You may have to run something down the drain tube to clear it. Usually you will see the obstruction when you remove the cap. There is a remote possibility if it drains into a garbage disposal that food particles have clogged the drain outlet inside the garbage disposal. Hope this resolves your problems. Cheers!

You need to check to see if the drain line runs from the dishwasher pump to either a "T" on your kitchen sink drain or if it connects directly to the garbage disposal. Either connection is okay. However, water can run downhill from either connection to your dishwasher. To prevent dirty water from your sink or garbage disposal from running downhill to the dishwasher, you may have to install a dishwasher air gap. This can be purchased at a appliance parts store or a home improvement store like a Home Depot or Lowes. It is a "Y" shaped device that should be installed above the dishwasher drain line connection under the sink. As water will not run up hill, you need to make sure that the Air Gap is installed higher than the drain line's connection under the sink. "The Air Gap device should be mounted as high as you can under the sink."

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The drain hose is supposed to go from the garbage disposal to a high point under the sink in back to keep the water from gravity draining into the dishwasher when it shuts off. If you look you will see that the hose is laying on the bottom of the sink cabinet. Get a hook and wire it up so you're not washing dishes with water from the disposer. Be sure to run the disposer. if it is clogged with food the dishwasher will not drain, water will back up and drain back into the dishwasher. Also make sure that the pipe exiting the disposer isn't clogged and draining slowly. hhe best solution is to have an air gap that mounts on the sink. It goes between the washer and the disposer to keep this from happening.

Try adding bicarb of soda/baking soda and vinegar in the detergent dispenser. Bicarb fizzes off hardened particles and vinegar strips off grease and aids rinsing.

The drain hose from the dishwasher should exit the dishwasher, then head up to the nderside of the counter top, before heading back down to connect to the disposal drain connection.

If the drain hose doesn't do this, the dishwasher is improperly installed, and clean dishes risk being contaminated, which can cause people to become ill.

Check the level of your drain hose underneath the sink between the dish washer cabinet and sink cabinet connect to the dispose position, sometimes if the middle part lower than the dispose will cause the back up problem, should be a little higher.