If somebody answers it will be under your question - answered questions have a blue-filled radio button next to them - unanswered then the button is clear...
Your question was...
"My Professional inox Rewenta will not heat. The red on button lights."
My answer for what it's worth is that the heating element is probably defective - from what little I know of modern irons the easiest solution is to buy a new one - I am unaware of any Iron-Repair service. I find DIY iron repairs virtually impossible.
Oh! Your original question may still be answered yet - be patient...
Good luck...
Peccavi
October 2009