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MDBH969AWB3 New Maytag Dishwasher not fully draining

Incomplete draining.

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4 replies to this topic

#1 worldbound4now

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Posted 18 December 2011 - 12:05 PM

I purchased and installed the above noted dishwasher four days ago as a replacement to a 20 year old beast. At the end of any wash cycle or the rinse only option, the dishwasher does not fully drain. The water left in the base of the machine is below the level of the fine mesh screen under the lower wash arm, but above the larger drain holes. If I select the cancel/drain button, the machine will finish draining without issue.

Here is what I have done to troubleshoot:

1. Removed dishwasher and checked hose for kinks/sharp bends that may impair flow - no issues

2. Inspected garbage disposal drain inlet hole to be sure plug was entirely removed - no issues and never were any drain issues with the prior dishwasher either.

3. Ensured drain hose is securely fastened to under side of counter, above the level of the disposal drain hose.

4. Inspected interior of dishwasher drainage ports and, as expected with a new machine, they are clean.

5. Verified that the machine is installed level and square.

6. Called Maytag customer support. They were very vague and uncertain of their advice, but in the end they told me that water left in the bottom of the machine is normal on the first few run cycles of the new machine. I have run the machine on 8 separate cycles now and the water remains present. Over the life of the machine, this seems to be a huge sanitation/mold/mildew threat. They did happily tell me that they could send out a repair technician but would bill me for the service call if the issue was "normal" operation or if it was an installation issue.

7. Searched this forum and others and performed the above troubleshooting steps without resolution.

Any other advice?

Final comments: What kind of company would charge me for a service call on a perceived malfunctioning new device? Grrrrrrrrrr.

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#2 appl.tech.29501

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Posted 18 December 2011 - 12:30 PM

That information is inaccurate. Find a local repair company that is Whirlpool authorized and schedule a service call. Regardless if the technician finds a fault or not Whirlpool will pay their authorized service companies for "customer education" calls up to 90 days from date of purchase and 30 days for installation issues. from what you have described the machine is installed correctly. I dont recall any service bullitens regarding this issue but i will check.
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#3 worldbound4now

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Posted 18 December 2011 - 04:24 PM

Thank you. I will call a local rep/service agent.

I made some measurements on water discharge by disconnecting the drain line and running it into a large graduated container. When the end of wash drain cycle occurs it runs for 2 minutes and evacuates approximately 5.5quarts of water from the machine before turning off and lighting the "clean" light while leaving water in the machine. When I then hit the cancel/drain button, the pump runs for another 2 minutes and evacuates another 4 quarts of water from the machine. I noticed the water left in the machine is soapy, telling me that the drain between the wash and rinse cycles must not have completely evacuated the water present either. Either the pump flow rate is too slow or the pump drain cycle is too short. Is a 2 minute drain cycle the "normal" drain time?

#4 kdog

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Posted 18 December 2011 - 04:43 PM

2 minute drain cycle is correct, the drain hose should be comprised of 2 pieces - the first is a loop that connects to the outside of the tub, and there is a check valve inside the elbow that connects to the pump. The second drain hose clamps to the end of this loop and completes the drain. Sometimes and iten can pass through (coffee bean etc) and get wedged into the first loop and slow the drian. You may have to slide the unit back out to gain access to the loop on the side. Stuff can also get wedged in the elbow/check valve at the end on the hose.
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#5 KurtiusInterupptus

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Posted 18 December 2011 - 05:14 PM

I agree with kdog...2 minutes of drain should be more than enuff to empty the tub...
Almost has to be a restriction or blockage at some point...make this info available to the local tech when he arrives...
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