Ferroli Optimax Combi Cental Heating System, keep getting reset light on?

there is a few things it could be, first check outside to make sure your pressure relief valve isnt passing, check on top of boiler also to make sure the auto air vent isnt leaking(brass barrel with plastic screw which should be loose). Usually its one of the rad valves leaking check for damp patches on the carpet, gluck hope u find the problem

ant from manchester breakdown engineer
January 2007