Question edited for typos and spelling. It is a 'frother' rather than a 'throther'.The roaring is normal, you are releasing steam from a boiler. Steam wand issues are usually caused by cooked milk solids inside the wand. You need a good enzyme cleaner like Rinza. Help and videos in the linkhttps://www.google.com/search?q=Krups+EA+80+milk+frother+not+working+properly..