vokera combi rises to 3 bar and leaks water at prv outlet

[donniew]

my boiler when switched on gradually rises from 1 bar to 3 bar and leaks water from the prv outlet. when i de pressurise system back to 1 bar and switch on the same happens, but otherwise the boiler appears to operate normally? any help would be appreciated

 

[Rob]

expansion vessel will need recharging

see FAQ

 

[donniew]

will try that, thanks for the info

 

[gas4you]

If expansion vessel has water squirting out of valve it is knackered!

 

[Rob]

Went to one a few weeks ago (a compact) and upon inspecting got a considerable amount of water out at pressure. Was about to book in for new one, but gave it another go to which it eventually stopped and then just needed a re-charge?

How that much water got in there in the first place? I know theres usually a dribble..

 

[gas4you]

If water is there surely( I know you are Rob!!) diaphragm must be split or something

 

[Rob]

Must be able to develop slow punctures or similar! This was atleast 3 weeks ago and havent been back since....

 

[corgiman]

if you pump up an expansion vessel with a split bladder and the shroooders ( i really dont know how to spell it ) holds then it works