Rocket 58 V2 does not allow pure water to operate because of the sensor in its water reservoir. Is it the same for Profitec Pro 700?
Almost all of the prosumer (HX, 2 boiler) machines operate on the same auto-fill principal. There needs to be enough minerals in the water to pass an electrical signal. distilled water is sometimes OK to use depending on the mineral content after the distillation process. It depends on the quality of the distilling process used. - See more at: http://community.wholelattelove.com/questions/4269/does-distilled-water-work-in-this-machine--4269#answer-478007-31-14 12:04PM