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Thanks for your help so far, I am not sure where the diaphram is located or how to change it - advise would be appreciated. I am a fairly good DIY'er, I changed the Combustion Air fan of this boiler last year. We have made some progress and I can now provide a full fault explanation. WB...

Spot the amateurs :lol: :lol: :lol: Tattyt

Thank you very much for the quick responses. Some answers: has the cold main flow rate been increased ? No Is the burner pressures o.k ? yes 1.2 bar have you a faulty thermistor? No Are all hot taps like this now? Yes Some more information: When the heating comes on the...

Hi, I was wondering if anyone could help me: I have a gas Worcester 28cdi which is only supplying lukewarm water. This happens all the time, even though the heating is still working fine. The water demand light is on. We have recently had the plumbing put in for a new bathroom...