The heating element and thermostat are not regulating water temperature very well.
After owning this product for a month, I am very displeased with the product quality. Most of the time the espresso is sour tasting. I have to work hard to get a decent tasting cup of joe. After being so un happy I call 1stcall (whom I bought it from) and they are clueless. So I searched the internet for an answer to sour tasting coffee. After an hour or so the answer was, not hot enough water. So I tested the machine with the Styrofoam cup and a cooking thermometer trick, and to my amazement 3 out of 4 times the temperature was only 165-175 degrees instead of the 190-200 recommended. And this is why it is so difficult to get a good cup of espresso.
Geared for sales only. Don't call them with a problem.