I do have a ground floor extension with a long run of pipes beneath it which is why isolating the problem is paramount.
The hot water cylinder already has the auto valve on the feed and a valve on the return from it (i think - its a gate valve with a red circular tap). If I switched hot water...
Newbie looking for advice please....
Had new condensing boiler and rads fitted to existing pipework in May 07.
All okay until Jan 1st. Pressure fell overnight and I now have to manually fill 3 times a day otherwise pressure warning light on boiler. Still same after 3 weeks - boiler...
