When dishwasher is emptying it is backing into sink

Check the drain hose that goes into sink cabinet. It should loop up as high as it can go so that water from the sink or disposal doesn't siphon back into dw.

Check the drain line underneath the sink.
It should be suspended just below the counter top.
If it is too low,water from the sink will back fill into the dishwasher.
If the drain is OK,then the dishwasher water valve is defective.

I suppose "flooding in both drawers of ..." implies water is not draining out. Is that right?

It is a very little information to give you any clear solutions.

Did the water get into the drawers without starting any wash program? Most likely it is the backflow from kitchen sink back through the dishwasher drain hose. Does your kitchen sink plumbing have an air gap sowehere. If so, is it clear?

If the water is the back flow then it is likely to be smelly and you do not want to run it through the dishwasher. I would suggest take the drain hose out from under the sink downpipe and drop into an empty bucket. Then take all the fixtures out from the drawers and empty out water using a small container.

Put the washer arms back and run each drawer on a short rinse cycle collecting the drain water in the bucket. If cycle runs clear, then get plumber to check the kitchen downpipe.

Reconnect drain hose.

Hope this helps.

Problems associated with water from the kitchen sink back filling into the dishwasher are caused by the drain line on the dishwasher not having a high end loop. In simple terms, the dishwasher line is too low and is providing a path for the water to flow in the wrong direction. Reposition the drain line so that it loops just above the sink drain. Then, anchor it to the wall so that it does not move. This will provide and air gap and creates just enough resistance to keep the sink water from entering the dishwasher. I have included a link to a webpage that illustrates what I am referring to:


http://homeimprovementteam.com/standing-water-in-dishwasher


If you have any further questions, please post back and let me know. I hope this helps you.

NOTE: If you are experiencing problems with the sink draining as well, then you may have a plumbing releated issue.

It sounds like an issue with the sink drain rather than the dishwasher. Many dishwashers are connected to a double sink, one bay of which contains a garbage disposal. If yours is connected in that configuration, run the disposal to clear any food debris that may still be present while running the HOT water into the disposal.

If you have no disposal or if the dishwasher is connected to the other non-disposal bay, check the sink drain again for proper drainage.

The easiest way to do this is to put a plug in the drain (both sides, one at a time), then fill the sink about half way with luke warm water. Then reach in and pull the plug from each side, watching to see how each side drains, but especially the side with the dishwasher connected. If it's slow draining, focus your efforts on clearing the drain on that particlular side of the sink. Try a plunger first before resorting to other methods to clear the sink. If you plunge the dishwasher side, get underneath the sink and pinch off the discharge line from the dishwasher if possible. A pair of vise grips works well, but don't overtighten them.

Some dishwashers have a soft disposal that can eject enough ground up particles into a sink to cause plugging up over time, especially if the dishwasher empties into the disposal side.

Make sure drain hose from dishwasher is higher than water inlet if not it will do just like a washing machine if the drain hose is lower than water level it will empty while filling.

The dishwasher drain line that connects to the garbage disposal or pipe under the sink should be looped above the height of disposal or pipe to prevent
sink water from backflowing into dishwasher.

Most dishwashers have some form of internal backflow preventer inside the water sump assy..
Yours may be degraded or stuck open.

I have had this problem a few times. For me all I had to do was unscrew the vent/overshow knob on the sink and clean out the vent. Because the vent is clogged, it does not allow the water to flow out. Clean out the debri and screw the vent cap back on- should work fine.

make sure you don't block either sink with food as they share the same drain. Also check to make sure the hose between the washer and the sink is clear and not blocked with food/gunk.

most likely you do have drainage problems where it is backing up