boiler keeps locking out all time , get hot water wen reset lock out ,.presser release valve been replaced but is still leaking water from beneath boiler, presser is over 4bar.. been told it could be the bag at back..can anyone give light on this please

t mac, January 2009

GET A CORGI ENGINEER TO SEE TO THE BOILER.
Boilers are not something you can mess about with.
Sounds like expasion vessel problems but only a site visit by a engineer would comfrim this.

Anygasman, January 2009