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Hi everyone, My mother has a 30cx which is 4 years old this is not used very much as mother also lives away sometimes. This is what happens. You put the programmer to call for C/H & H/W The Radiators all get warm and runs normal, when you turn the hot tap on no hot water, this is the tap...

Wonder if anyone can help me? Install boiler 2003 been running well apart from replacing pc board 7 Electro spark leads, now for some reason we have this whistle type noise when the boiler goes to cut out(otherwise reaches temperature).Before it cuts out we gt this loud whistle/hum type noise...