What can I do if my machine does not heat up and the red lamp is not illuminated?
Verify the power supply by checking that the green light …
As a rule, a bitter espresso with a sharp taste, little flavour and a strong aftertaste is the result of overbrewed espresso powder.
Perhaps you have used too little coffee, the grind is too coarse or the coffee is old. It is important to flush between at least 1.01 and 1.35 oz. water before making your espresso. Always use fresh coffee powder by grinding the coffee beans only shortly before making your espresso.