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Black and silver single cup coffee maker with water reservoir on the left hand side. K40/K45.

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Why does it automatically choose a cup size then not work?

When I turn my Keurig on, it automatically picks a cup size (that button lights up).

Then when it says it's ready to brew and I try to brew, it is silent and nothing happens. It won't let me choose another cup size.

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1 Answer

Usually when this happens with Keurig's it needs to be put through a scaling cycle. Usually they want you to buy some expensive descaling solution but simple household white vinegar does the trick. Check the video below for additional instructions.

https://snapguide.com/guides/descale-cle...

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