i have a volkera boiler which was already here when i moved in 5 an half yrs ago although i was told it was quite new then, unfortunately i don't no what type only the make. Now i have the problem with heating and hot water the last 2 days it doesn't come on and im having to open the bottom and turn the 3 bar to get it to light up, and also having to refill the water slightly, now i have looked on Q.A but im a single mum who needs it told to her in easy idiot guide. can anyone help me as im not paying out loads of money which i haven't got if the bloke comes round and tells me its not a manufacturing problem!!