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I have found the expandion vessel round the back of the boiler with a bicylce tyre valve near it. I have tried pressing the valve in but there is no release of air, Anything I can try before I call a plumber. Edit- - Have just found this on a previous post, can I try this To...

Oh well didnt work. I havent been around weh the PRV is dumping but if I set my pressure at 1.5 Bar (Cold) then turn on my CH it get very close to 3Bar How much of a pressure rise should I expect form cold to hot & where to I find the expansion vessel/diafram. I have had the bottom...

I have been monitoring the pressure since friday. Turns out pressure also rises when cold, although not up to 3 bar (probably about 2.5) Came to the conclusion my top up was probably leaking. Stripped it down yesterday & yes when closed, water is still coming thru. This would build up when...

Have just had a look around & found there is a cut in a piece of silicon pipe running from the air ressure switch it has left a hole abot 3mm wide & has a little dust on the inside of the pipe where it looks like it could be sucking air. Could this be the problem? Has the pressure swirch...

When my system gets hot the pressure rises as I would expect. But it doesn't stop rising, it just keeps going till it gets to 3.2 Bar & PRV dumps the pressure down to 0. If I turn my hall thermostat down to 18-19 deg in the hall it reduces the problem & it may only happen once every...