If you've never done a decalcification, do one. A decalcification basically means that you're running vinegar and water through your coffee maker to get rid of calcium build up, which can cause your coffee maker to run very slowly, or not at all.
You always want to do a "1/3 white vineger to 2/3 water" solution--meaning that if you have a 10 cup coffee maker, you want to fill it 1/3 of the way up with vinegar (3 cups), the rest with water. If you have a 12 cup coffee maker, you want to do 4 cups of vinegar, fill it the rest with water. And yes, it DOES have to be white vinegar--the other vinegar types don't do anything for calcium ;)
You basically just brew the vinegar/water though your coffee maker, and you might have to do it 2-3 times before it will be completely fixed--most companies recommend that you run the vinegar/water through your coffee maker once ever 1 to 2 months to prevent things like this from happening, so if it's already happening, you may have to do it more.
And always remember--after you brew a pot of vinegar/water through your coffee maker, brew a regular pot of plain water through it afterwards, or your coffee will taste like vinegar! lol
If all else fails, you can always contact Waring customer support - their phone number (according to their website, www.waringproducts.com
) is 1-800-4WARING (1-800-492-7464)
Good luck! :)