How to dissolve the coffee bean from the coffee maker?

Clean the carafe with hot soapy water. Pour one full cup of white vinegar into the water reservoir and allow to brew/run through a cycle. Allow the hot vinegar to cool in the clean carafe. Remove the carafe and wash again with hot soapy water and rinse well. Run a full reservoir full of cold water through you machine to rinse it and pour off the result. Your coffee machine should then run like it did when it was new.

Clean the carafe with hot soapy water. Pour one full cup of white vinegar into the water reservoir and allow to brew/run through a cycle. Allow the hot vinegar to cool in the clean carafe. Remove the carafe and wash again with hot soapy water and rinse well. Run a full reservoir full of cold water through you machine to rinse it and pour off the result. Your coffee machine should then run like it did when it was new.