Each day I have to fill the boiler up with water because it has leaked out the over-flow outside the night before. I top it up to 1-1.5 Bar before i switch it on in the morning then When the boiler starts up everything is fine ( heating and water ) but the pressure sometimes goes up to 3-4 Bar. The next day the boiler wont work as the pressure has fallen to 0.5 Bar. I have bled the radiators and no air is coming out.
Please help if you can or Tel 0191 421 2960 and I'll call you back Gail

Gail Oakley, February 2007

Hi Gail, I'm afraid I don't have an answer but I too am suffering from the same problem. I also have the added problem of the boiler locking out, even whilst the tap is running. So far we have had a new expansion vessel, pressure valve, and 2 new thermostatic controls. The engineer is coming again tomorrow so if he tells us something else is the cause I'll let you know. However if yours is fixed already please can you let me know how as our engineer seems stumped.
Thanks
Claire

Claire, March 2007

how did you check expansion vessel

hi-spec plumbing, February 2007

thank you Hi Spec Pluming
I have foung no air in the expansion vessel. Am I right in saying I should wait till the system is cool. Bleed a radiator so I can add 1 Bar ( as per instructions) to the expansion vessel and then all should be well??

Gail Oakley, February 2007

expansion vessel faulty

hi-spec plumbing, February 2007