I have a Worcester Bosch 28i junior boiler
Last month or 2 I’ve had to top it up a tad every few days nothing drastic
Have checked all connectors on radiators and boiler where I can get to
Expansion vessel has been checked and is holding pressure fine
I have noticed if the boiler is off and goes cold and it fires up I hear a rush of air and the pressure drops a tiny bit like 0.1-0.2 bar
I fitted all new radiators last year and has always been fine with no air bubbles only recently I have noticed this issue
I only have to top up the same amount each time so it’s not getting any worse
I have no dampness on ceilings at all
Any ideas
Last month or 2 I’ve had to top it up a tad every few days nothing drastic
Have checked all connectors on radiators and boiler where I can get to
Expansion vessel has been checked and is holding pressure fine
I have noticed if the boiler is off and goes cold and it fires up I hear a rush of air and the pressure drops a tiny bit like 0.1-0.2 bar
I fitted all new radiators last year and has always been fine with no air bubbles only recently I have noticed this issue
I only have to top up the same amount each time so it’s not getting any worse
I have no dampness on ceilings at all
Any ideas