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Thanks Tony, i checked and it seemed fine. a little update, I ran the heating up to full power and opened all the rad valves fully including all the thermostatic valves. (I guess I should have done this already). Anyway when I bled the top most radiator I got a little rasping water out of it...

Thanks for replying Tony. I've checked the diverter motor, the manual refers to it as the electric actuator, I presume it's the same thing? Iremoved it and saw the pin. There is no moisture present there or inside where it contacts the valve. What checks should I perform on the condensate...

Little update (and shameless bump) I let the boiler cool right down this morning and then shut off the CH circuit flow and return then left for work for the day. The idea being if there was a leak during the day, then I would get a pressure drop as I opened the valves this evening. I've...

Hi all I'm a bit lost with my boiler at home. its a Biasi RIVA COMPACT HE MK2, model number M96A.24SM/C GC number 47-583-17. Now follows a long tale, but hopefully i'll cover everything and someone may have some ideas on what to try next as I'm a stuck. We moved here a few years ago...