Question about Black & Decker GT300 Coffee Maker

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Blak & Decker Home Cafe GT300 won't stop untill water is gone

My Home Cafe GT300 makes a loud noise during prime and brew and doesn't stop until all of the water is gone from the reservoir. I have cleaned it but that didn't help. It worked fine but wasn't used for a few weeks, then it started this issue. Any ideas will be greatly appreciated before it goes to the landfill. Thanks.

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  • justnangel53 Jul 29, 2009

    The next day it worked fine. No landfill for it yet.



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With the GT300 you can service the unit. You will need a flat head screwdriver, preferably a low quality one, that will need to have a small spot filed out in the very middle of the flat head area to remove a few special screws that are common to these appliances.Luckily it is very easy to modify a flat head screw driver to remove the area necessary to make the tool work well enough to remove the special screws. After that, you will need a phillips screw driver as well. Remove all the screws, some are hidden underneath the plastic grip pads on the bottom as well. You will observer a tin can heater, and a priming pump (white) and an invensys ******** pump (red). The invensys pump (CP1, CL1) is very easy to service and this is what you will find the problem is 99% of the time. Just unscrew the plastic ends (you may need a wrench) on the invensys pump. It will come apart, be careful to keep all the pieces, they will spring apart like a jack in the box if you are not careful. Get all the pump pieces where they are moving again and then put the pump back together. There should be two metal rings with a plastic ring between them. You may have to plug and unplug the unit a few times and get out any excess water before getting the system primed and running again.

Posted on Jan 22, 2011

  • Slimson Jul 25, 2011

    Good advice, I was able to make the tool and repair my daughter's Black & Decker DCM2160B coffee maker. The flexible tube from the reservoir to the heating element has a check valve that was completely cloogged with grounds. Your description of how to make the tool was just what I needed.


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Unfortunately, the unit can't be repaired or fixed with any type of troubleshooting. It has a one year warranty from the date of purchase. If you've had it for a few years, off to the landfill it goes. . .

I hope I've provided you useful assistance and that this information allows you to make an informed decision as to how to proceed from here. Please be sure to vote on my response. I hope I've earned a good rating from you today.

Please post a comment if you need additional assistance so that I can help you further.

Posted on Jul 29, 2009

  • Stone Phoenix
    Stone Phoenix Jul 30, 2009

    I'm glad it's still working for you. Have a wonderful weekend!



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