Update the story, I received the Cafetto vanish descaler this morning. I follow all the information/suggestion on this forum how to use the descaler properly. On my third runs to re-fill the water tank, I notice the boiler stop input the water (pump did not move). And there is no pressure, no steam, no water from hot water wand. When I lift the lever, the pump did move. So according to the previous information around this forum, my control borad (relay) is died, right? Is there any other diagnostic way to narrow down the faulty? Or I may just bring it to the local Giotto service instead. Cheers
