We have a Vailliant combi boiler which is quite old, though we have never had any problems with it until now. I want to know what is likely to be wrong with it before find somebody to look at it.
When hot water is being drawn the radiators heat up. There is also a pressure dial on the front which has a fixed pointer and a movable pointer, which I was told to make sure lined up by letting water through a tap into the system. This was rarely needed but now is frequently required. Any advice would be welcome
When hot water is being drawn the radiators heat up. There is also a pressure dial on the front which has a fixed pointer and a movable pointer, which I was told to make sure lined up by letting water through a tap into the system. This was rarely needed but now is frequently required. Any advice would be welcome
