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S.E.Thomas, Home Appliance Technician
Category: Appliance
Satisfied Customers: 787
Experience:  16 yrs in the field and current owner of S.E.Thomas appliance
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Maytag Legacy dishwasher stopped working during wash.

Customer Question

I have a Maytag Legacy Series quiet series 300 dishwasher that I purchased from Home Depot in May 2007.

This week during a wash cycle it suddenly stopped working. The buttons are unresponsive, the display flashes "9" and the rinse indicator light is illuminated.

Any suggestions on something I can try?

Submitted: 7 years ago.
Category: Appliance
Expert:  Tyler Z. replied 7 years ago.

Unplug the unit for 60 seconds or turn the circuit breaker off to reset the unit. If it doesn't then you will need to replace the touchpad as it could have shorted out.

Customer: replied 7 years ago.

I killed the breaker for ten minutes. When I turned the power back on the flashing "9" returned immediately. The front panel looks sealed and dry... I wonder why it would fail? What would I have to do to get a new panel? The unit is just over two years old. I would expect a dishwasher to last ten years.

Have you fielded many service requests on this particular unit? In your opinion, did I buy a big white piece of garbage?

Expert:  Tyler Z. replied 7 years ago.

I have seen many issues with this unit and if it came up with 9 again as soon as you re powered the unit then you have a bad control board not a touch-pad. The issue is almost always the touch-pad, but in your case the control board is the issue. I wouldn't expect this unit to last 10 years no matter how lucky you are, more like 4-6 years. They just don't build them like they used to by any means.

Customer: replied 7 years ago.

Huh? I just closed the dishwasher door and it ran through a rinse cycle for 9 minutes and then the display went blank. I pressed "autoclean" and then "start" and the unit seems to be functioning. I will let you know if it runs through completely.

Where is the control board? I assume it is separate from the touch panel? How do i get a new one? Where can I purchase parts? Do I have to go straight to Maytag?

Expert:  Tyler Z. replied 7 years ago.

Correct, the part is located inside the door behind the touch pad. If it doesn't act up again then that's a good thing, but if it does it again then you will want to replace the board. The part will need to be ordered through pay tag or an online store like

If you have a local appliance parts store you can order it from there as well.

Customer: replied 7 years ago.

I was eventually able to make it all the way through that one "auto clean" wash cycle. Every once in a while, it would stop wherever it was in the wash cycle and flash 9. I would have to press start and let it run the rinse for the 9 minutes, and then start the auto clean cycle over again. However, it still flashes the rinse light and has a flashing "9" on the display for ten minutes and then goes blank for ten minutes at random intervals throughout the day.

I am sure that I have to replace something, I just want to make sure that I replace the correct component. I also want to make certain that the part is worth replacing. If the control board is $250 and a new dishwasher is $350, I would rather get a new washer. Do you have a recommendation on where to source this part and roughly what it might cost? Do you think that this could be a reoccuring issue, and I may be better off buying a new washer rather than sinking $$ into this three-year-old piece when it will probably act up again in another year or two (if I'm lucky).

Any recommendations?

Expert:  Tyler Z. replied 7 years ago.

With a full model number you can look up the control board at The model number is ***** a sticker around the frame of the door on your dishwasher. The cost will be right around $100 or so for the part. It will need to be replaced to correct your issue. I think it's still better to repair then to replace if you are doing the repair yourself as the cost is not that much.

Customer: replied 7 years ago.

I am concerned that the control board is not the problem. I pulled the board out of the sealed case and it looks clean and sealed with some sort of silicone film from the factory. There are no burnt caps or corrosion of any kind. I did some additional research and found the link below. Here they say that the solution was the touch panel and not the control board. Like many other people these days, I am in a bad spot financially and I cannot afford to shotgun troubleshoot this problem. I want to be certain that if and when I buy a replacement part for the repair it is the correct one because I can only buy one. That is why I was willing to invest in the Just Answer Appliance solution, I want to be assured that this is the solution to my problem by someone who has experience with this specific symptom. How confident are you that the solution to my problem is the control board and not the touch panel?

Expert:  Tyler Z. replied 7 years ago.

You can't see the problem but that doesn't mean that it need not be replaced. There is no way that a touchpad can cause a 9 to continue flashing.

There is nothing the touchpad can do to cause that.

Customer: replied 7 years ago.

My Model # is MDBH965AWW and my serial # is 37595533LJ

Can you help me find the cheapest control board? I don't really know the best place to get parts. Do you have a favorite or most trusted location to make a PCB purchase?


Expert:  Tyler Z. replied 7 years ago.
Here is the cheapest one I can find and the website is reliable.

Customer: replied 7 years ago.

The model number doesn't match my model number is ***** a problem, or is that simply because they make parts for all kinds of models?

Expert:  Tyler Z. replied 7 years ago.

That's exactly right, they make that part for many models. That is the correct part for your model and serial number, they just save it under only one model number.

There are actually three control boards for your model but that is the correct one for your serial number I assure you.

Customer: replied 7 years ago.
Thank you for verifying. I just ordered it.
Expert:  Tyler Z. replied 7 years ago.

Ok, good luck.

Customer: replied 7 years ago.

I ordered the control board for the dishwasher. That was the last time that I logged on. Unfortunately, the part was back ordered, and I didn't get it for almost a week. During the week that I was waiting, I removed the existing control board and cleaned it up with some acetone, and put it back in. The flashing "9" stopped and I haven't had a problem since. Now I have the new control board here still in the box, and I am hesitant to return it just in case I have problems again later with the original one.


Maytag Quiet Series 300 Dishwasher problems

It is common for dishwashers to start experiencing issues, especially after they age a couple years. Some of these problems could cause a series of lights to show on the display panel. Whether you see an actual error code or a series of error code lights depends on what model you have.

The error code identifications and troubleshooting tips are usually found in the manual. If you cannot locate the code, however, it may be helpful to contact an Expert.


Ways to help a Maytag Quiet Series 300 Dishwasher function properly

Many components on a dishwasher can malfunction, causing issues. Sometimes these issues can be fixed at home without the services of a professional. Check the following problems and solutions before contacting an Expert.

  • The back of the dishwasher has several water hoses; ensuring it is installed in an area with adequate space for those hoses could help. If one of the hoses become kinked, it will not be able to drain properly, causing error codes to appear. 
  • If the dishwasher has been serviced recently, you might check that the water valves have been turned back on. Often when serviced, the valves are shut off.
  • This model also has a locking door, and if anything is blocking the door from locking, the cycle will not begin. A helpful tip would be to ensure any large items loaded into the appliance are not leaning against the door.
  • Other dishwashers that have the door-locking feature will start after the door has been closed if a selection has been made prior to being loaded. This model does not, the display panel will have you review your choices before starting.
  • This model has a safety measure when the “heated dry” button is held down the dishwasher will go into lockout mode. The button must be held down again to turn this feature off.