When I run one of the two drawers - it doesn't matter which one - as the one drawer is draining, it will sometimes fill up the other drawer with the water from the drawer that is running. My husband and I took the drain lines off and ran a test, when the water hits the airgap, the machine doesn't seem to have enough pressure to push the water to the drain pipe so the first place it goes is to the opposite drain line and back into the other draw.
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As the drawers share a common outlet to the kitchen sink drain, it is the drain water from bottom drawer going to top drawer. Can happen if the drain hoses are not following the correct specifications for installation. An air gap kit is available to solve the problems.
If it is a double drawer dishwasher then there are two hoses one from top drawer and the other from lower drawer. They combine under the kitchen sink using a U adapter. Need to find which one is choked (assuming kitchen drain is ok and you have no inskinerator being used). Disconnect the U adapter from kitchen drain and empty tie to an empty bucket. Run each drawer and see which one is causing the block. (just a rinse cycle should be ok).
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.
Could be many reasons for the bottom drawer to hold water.
It could be leaky top drawer causing water to collect in the bottom drawer. Check if water collects when top drawer is running.
It could be blockage in the bottom drawer drainage which can be fixed by cleaning the filter plate and the drain sump. If the drain pump is not running during drain cycle then you will have to replace the drain pump motor.
You may want to check up if the water collects in the bottom drawer when the top drawer is in wash cycle (ie, taking water from the inlet) or during the drain cycle when it is draining water out. Leave the bottom drawer open and check while the top drawer is running.
I am not a repairman but have installed several duel drawer dishwashers. Most dishwashers have a check valve preventing backflow. Water under pressure will always follow the path of least resistance and in your case it is going into the upper drawer. Be sure the drain is open and flowing easily under your sink whether that be the disposal or a TEE. It may help if the drain line is elevated as high as it can go under the sink just before it reaches the drain. How often do you use the top drawer? Perhaps run a cycle on the hottest cycle without dishes to attemt to clean or force through any contaminants in the check valve through into the drain. Hope this helps, Ken
yes there is. It is just inside the white hoses that drain the system. 1 per drawer. They cost about $0.50 but are a real pain to get to. This flap will go bad in about 3-5 years and maybe sooner depending on the temp of the water used.
If the bottom flap goes bad, using the top drawer will drain into the bottom drawer.