Hi ,

Have a problem with my boiler is around two years old,
The valve above the boiler keeps dropping to zero and i keep having to top it up every two to three days, has been like this for a while and I can't find any leaks anywhere in the house..??

thanks amill,
D

Declan, November 2010

Could be the expansion vessel has lost it's pre-charge pressure or is too small for the system.

CMac, November 2010

is it a combi.........could be dripping from pressure relief valve outside or you might need a new expansion vessel

007plumber, November 2010