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Hi Everyone I've searched for any clues to this one but coming up short. Boiler was working fine was running low (half temp) on ch dial... External controls running ok. Then boiler starts to over heat. Ch kicks in water heats but not going anywhere, pump red hot boiler locks out Display shows...

Hi Everyone I have the above boiler that is leaking from the central heating diff valve where the microswitch is attached. I have searched the threads but most deal with the front diverter leaking. This is leaking from the top nut on where the microswitch touches the top valve. I have attached...

I have a Potterton Puma 80e which is driving me crazy. It has a Myson Compact CP61 pump (not checked). 1st problem was losing pressure slightly - no leaks in house but floor underneath looked like had historical leak issue, but not sure about expansion pipe, kept filling via loop on regular...