The fuse kept blowing some time ago but eventually settled down and has not been happening, it hasn't happened for the past four months but now has happened twice within a week? I believe the breaker has a 15 amp fuse wire but I have looked on the web and cannot determine if this is correct so I guess the main thing is to be sure the correct wire is being used, further to this the pressure on the boiler has always dropped gradually to the point where I have had to increase pressure every month or so, the plumber who fitted it a couple of years ago actually left the flexi pipe connected and showed me how to increase the pressure but I have been told that he shouldn't have done that?, I have searched all radiators and visible pipes without any sign of a leak and there are no obvious signs on the ceiling etc but having to repressurise hasn't really been a huge problem, the fuse constantly blowing is becoming one, the last time it happened the boiler was completely idle and so I don't understand how the fuse could blow?
Your help/advice is greatly appreciated, thanks

Granty, April 2012