The red light came on, on our Vokera boiler yesterday. When i try to reset it as it says in the manual, nothing is happening. Just before it ignites it locks out again & won't fire up. We have no hot water or central heating at the moment. Does anyone have any ideas as to what the problem might be or has anyone else had a similar problem with their Vokera & how it was fixed? We just don't want to call anyone from the Yellow pages who wants to make a lot of money from a very minor repair! Especially when we don't have a clue about boilers ourselves.