Recent content by stearno

Is it possible to replace a radiator valve without draining the system down? I need to replace a valve as the existing one is old and its adjusting pin crumbling.

My boiler is a Potterton 50e. Up until a couple of days ago, it worked fine, however, currently it now appears to firing for 3 seconds or so, then stopping for another 3, then firing again and so on. It is doing this constantly. It doesn't appear to be making any strange noises, but it...