I turned a valve in the cupboard under the boiler, and water flooded from the former radiator valves!
There's a screw inside the boiler for a flat blade screwdriver - is that the one you're referring to?
Sorry - not a technical person...!
Hi there
Please can anyone advise me - I don't have a manual for this model of combi boiler and, having lost pressure to the system when replacing a radiator yesterday, I now can't raise the pressure again. (The black dial is on 0).
I guess there's a valve somewhere, but I can't find it...