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Maytag mdb4000awx dishwasher wont drain. Started to over flow and spill out of the front. Garbage disposal isn't clogged

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Hi, I have to ask if there is an air gap installed on your sink? It would look like a chrome cap on the back of the sink. The gargage disposal can be clean and this little bugger can still cause a blockage in the Dishwasher drain line.

http://www.acmehowto.com/howto/appliance/dishwasher/check/airgap.php

Close up diagram
http://www.appliancepartspros.com/c/airgap.gif

The very bottom part of the inner tub sump area could also be clogged but you would have to get a bright light and look hard without removing anything. Food particle build up in the sump would cause the unit not to drain. Usually if there is food particle build up there are wash problems also.

At the moment I am sticking with a clogged air gap as the prime suspect. They are easy to clean... pull off the upper cover unscrew the plastic inner nut and remove the raised piece... (NOTE the installed position of the raised area because if you put it back wrong it will be like installing a drain plug in the drain line!) Usually if the air gap is clogged you will see it right away. I have in the past come across a few that it took sacrificing a coat hanger to clear the clog.

Posted on Feb 03, 2010

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  • Master
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Discharge pump is clogged. You will have to lay the dishwasher on its back to access it.

Posted on Feb 03, 2010

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Posted on Jan 02, 2017

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1 Answer

When dishwasher is emptying it is backing into sink


there is probably nothing wrong with Dishwasher itself.
Your Sink drain is stopped up or your Garbage disposal is clogged.
usually, dishwasher drain is connected to the Garbage Disposal, but if the dishwasher empties the water into the Garbage disposal, if its clogged then water will come out of the sink. Same if sink is clogged between sink and sewer.


If you fill up your sink and then water drains away, then you know your sink itself is not the problem. If its only the Garbage disposal side that does not drain, its the garbage disposal that is clogged.

Dec 22, 2013 | Dishwashers

1 Answer

Jenn air dishwasher won't fully drain


Your garbage disposal is clogged . Or your hose from your garbage disposal is flowing in the down position

Oct 22, 2012 | Kenmore Elite 45986 Front Load Washer

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Whirpool built-in puddle of water in bottom, food on drain


see this causes and proceed according. God bless you
Belt, Water Pump Although few dishwashers have a water pump belt, if the dishwasher won't drain there might be a worn or broken water pump belt. After removing the lower kick panel the motor can be seen in the front, the water pump belt is on the bottom of the motor.

Drain Pump If the dishwasher won't drain, the drain pump might be defective. Test the pump motor with an Ohm meter. Drain pumps are not repairable, if it's defective it will need to be replaced.

Drain Impeller The drain impeller is attached to the pump and pushes the water out of the dishwasher, through the drain tube and into the garbage disposer or drain line. If the dishwasher won't drain, the drain impeller might be broken or worn out. Replace both the impeller and seal at the same time.

Drain Solenoid Kit If the dishwasher won't drain, the drain solenoid kit might need to be replaced. The drain solenoid is an actuator that opens a flap to allow the water to drain.
Drain Valve The drain valve can get clogged with debris and should be cleaned out if the dishwasher won't drain. If it seems clear of debris but won't actuate, it will need to be replaced. The drain valve is not repairable Pump and Motor Assembly If the dishwasher won't drain, the pump and motor assembly might be defective. If the motor runs during the drain cycle, check for a blockage in the drain line. If the motor won't run during the drain cycle or if it just hums when it should be running, the pump and motor assembly might need to be replaced.

Clogged or Improperly Installed Garbage Disposer If the dishwasher won't drain and the garbage disposer was installed recently, the installer might have forgotten to knock out the drain plug from this disposer. All garbage disposers are sold with a solid plug in the drain tube for situations where a dishwasher isn't connected. However, if the dishwasher is connected, the plug will need to be removed. If the disposer wasn't replaced recently, remove the dishwasher drain hose from the disposer and clean out both the fitting on the disposer and the end of the drain hose. These are the most common places to find an obstruction if the dishwasher won't drain.

Clogged or Improperly Installed Garbage Disposer If the dishwasher won't drain and the garbage disposer was installed recently, the installer might have forgotten to knock out the drain plug from this disposer. All garbage disposers are sold with a solid plug in the drain tube for situations where a dishwasher isn't connected. However, if the dishwasher is connected, the plug will need to be removed. If the disposer wasn't replaced recently, remove the dishwasher drain hose from the disposer and clean out both the fitting on the disposer and the end of the drain hose. These are the most common places to find an obstruction if the dishwasher won't drain.

Check Valve If the dishwasher won't drain the check valve might be stuck closed. The check valve is a small plastic device which prevents water from returning to the dishwasher after it has drained. If the valve gets stuck closed, it will prevent the water from draining. The check valve is the device that the drain hose is attached to on the dishwasher.

Check Ball If the dishwasher won't drain the check ball might be stuck. The check ball is a small plastic ball in the check valve which prevents water from returning to the dishwasher after it has drained. If the ball gets stuck, it will prevent the water from draining also. The check valve is the device that the drain hose is attached to on the dishwasher.


10_17_2012_1_03_37_pm.jpg

Oct 16, 2012 | Whirlpool Dishwashers

1 Answer

My dishwasher isn't draining. The garbage disposal is hooked up separately.


Is sink drain line clogged?
Disconnect drain line at sink tailpiece and lower down to see if water inside dishwasher drains.
Call serviceman to clear clog in dishwasher hose, or repair dishwasher pump motor.

Oct 13, 2012 | Whirlpool Gold Dishwasher with Quiet...

1 Answer

Bosch dishwasher does not drain


Here are some steps you can take when your dishwasher does not drain:

First, check the dishwasher filter and make sure it isn't clogged.Your owner's manual will have simple instructions on how to access and clean your dishwasher's filter.

Next, check the drain hose. Does it look flattened or kinked? Do you see any sharp bends? If so, straighten out the hose with your hands and manipulate it so that it regains its rounded shape.

If your dishwasher drains through the garbage disposal, try running the garbage disposal for a bit to process and clear any food. If that does not get the machine draining, you may have a deeper clog. However, most drain hoses clog either at the main household sink drain line connection or the garbage disposal connection.

Does your dishwasher spray your dishes, but it does not advance to the next stage and drain the dirty water? The timer controls the start of the draining process, so you may need an entirely new timer or a new motor for the timer. Repair service is recommended.

In some dishwashers, standing water is caused by a valve that fails to open and allow the water to drain out. This valve is controlled a solenoid that the timer controls. A malfunctioning solenoid could be the problem.

For more troubleshooting tips, see Diswasher not draining. I hope this helps!

Oct 08, 2012 | Dishwashers

1 Answer

Water from dishwasher flows into sink and not into garbage disposal ???


there is a clog between your garbage disposal and the vent (the part water is coming out of) .most likely the clog is where it goes into your garbage disposal

Apr 23, 2009 | Dishwashers

1 Answer

The part by the sink causes water to flow all over the counter


Almost all dishwashers connect to the sink drain in one way or another. Many connect (via an Air Gap valve) to a garbage disposal.
If the "metal part" is at the rear of the sink, that is the top of the air gap. When water comes out of it, that means the drain is plugged.
If there is a garbage disposal, does water drain through it? Does the disposal work?
If there is no disposal, does water from the faucet run through the drain of each sink with no problem?
Thanks for answering these questions in a reply.

Apr 10, 2009 | GE Dishwashers

2 Answers

Water draining backinto dishwasher from garbage disposal


You have a clog where the drain pipe leaves the garbage disposal that isn't draining fast enough or not at all. Or it could be a clog in the dishwasher drain hose where it connects onto the disposal.

Apr 07, 2009 | Buck In-Sink-Erator BADGER 5XP BADGERVEXP...

2 Answers

Water standing in Dishwasher


Hello buzzy220,
If you have water remaining in the bottom of your dishwasher then I would check the following:
  1. The drain filter screen is free from food byproducts that might limit drainage.
  2. The drain line exiting the dishwasher itself.. is it kinked or clogged?
  3. If your drain line is plumbed into a garbage disposal side entry, is that clogged or your house drain clogged?
  4. Is your dishwasher pump contaminated with sediment or anything that would limit its ability to pump?
  5. Are the water lines that come into or out of the pump blocked, damaged or restricting water flow?
Those are the main reasons areas of concern to investigate.. BTW, your drain line exitting the dishwasher should be routed up high and down into your sink drain system or thru the garbage disposal tap so that you have an air gap as 20YRSEXP was inquiring about..

You can run a simple test to verify all this..
Detach your drain hose from the house drain system ( from the garbage disposer or sink drain.. then route that into a rubber barrel ( be sure to keep part of the house up around the height of the countertop when you do this.. )... You should see a fairly robust flow of drain water into it when the system functions properly.. I would encourage you to run this test with no dishes inside it,.. This test will tell you if the restriction is in the dishwasher or house drain side..
Hope this helps you..
Regards,
Rick

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