I have a Vokera Option Boiler, which from what i have heard is one of the worst boilers to have!!! Anyway, i have a similar problem as the one described in the related question, where i am losing the 1.5 bar pressure when i turn the boiler off, i therefore have to continually fill the system from the filling valve in order for the boiler to work. Looks as if i am getting a constant dripping from the prv outlet outside, can anybody help, what maybe the problem?? And what should i do??

Kendo 799, December 2008

switch the boiler off electrically.
drain the system
replace the pressure relief valve
fill the system vent it
switch the boiler on and there you go

heatingdoc, February 2009

sounds like you need a new prv

tim, January 2009