After our old Senseo suddenly wanted to brew out of coffee and after decalcification & Co. indicated just a permanent flash, I actually thought it would be broken, and she was already en route to the recycling yard. Then I read by chance that the error message to a defective tank (specifically the float in the tank) may be, and voila - with this new tank the old Senseo runs like clockwork.
This tank is blue-gray smoke and fits well with our optically aluminum Senseo; otherwise I can not say more. It's just a water tank, which once does now what he should.