Worried about the pressure in your Combi or sealed system ? When the gauge starts off at 1.2 bar when cold but when it has heated up, it is suddenly at 2.5 or higher.
Make sure the filling loop is disconnected, then see if it is still going high. Just in case it is letting by.
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Many thanks Al.
Link do Vídeo
My baxi combi boiler pressure gets high when heating is on, but when heating is off it goes all the way down. What could this be?
Can I add an extra expansion vessel external to the boiler on the radiator pipes? I think if you are not Gas safe but can handle the plumbing, instead of giving up the radiator you could simply drain the system down and add an extra expansion vessel with a valve to isolate it when that one in boiler will be replaced, is that right?
When the pump starts running water in the ch wouldn't it move the air from that radiator to others causing them to not heat correctly?
So let's put a spare radiator in every new install to use as an expansion vessel if needed and normally closed isolating the valves.
My one goes 2.9 till 3 bar
there we go auld hand best in the trade i struggled for a week with normal then very high pressure gas engineer friends (2) says boiler f*****d) no money for that in present times so tried the upstairs rad as extra expansion and hey presto working 100% now so new expansion tank on the cards at £93 compared to a couple of thousand for boiler replacement , gas engineer friends ? go tickle yer ass while watching a true engineer for some tips , like dereton on here ! yer a champ mate no other clips i watched gave much away that 1 with upstairs is common sense but you need to think about that 1st ! thanks again buddy stay safe
Hi
Another cause of pressure going up might be because of a closure in the pipes of the central heating from residue of radiators….
Pipes started banging like mad, turned on hot tap and it stopped but started again if I turned it off. Tried bleeding radiators, pressure was up to 3! Ran the taps for half an hour. Switched off heating and pressure is currently at 2 and descending. Wish me luck as I turn the boiler on again.
Very helpful and informative. Actually I thought the 'interruption' by the lady, added to the flavour of the video.
Pressure on my boiler keeps dropping over time and I have to top it up every 3 odd months, any ideas?
My pressure was going up turns out the plumber didn't tighten the tap to fill the boiler up right might be something to look at first just incase.good video
thanks al for the tip and sharing this information with us can do a video how to reaplace your expansion vessel on seal systems and whts your advice thanks.
Couldn't help but notice over the last couple of posts, you've got your winter cap on, 🙂 keep 'em coming Al, atb mate.
Thanks Al. I shall sleep safe and sound tonight knowing that when I wake I won't find myself riding a cloud when the whole lot blow ups!!