please can anyone help? I have a glowworm fuelsaver boiler and the pilot light ignites and stays on, but when i switch the central heating on nothing happens. when i switch the hot water on, the boiler kicks in, but makes knocking noises and pilot light goes off. Any ideas?????

Andy, January 2007

boiler over heating check pump may be wired from pump overrun check your getting 240v at pump if its got a diverter this may be fault doubt fault lies with pilot light .interrupter on t/c lead is making pilot go out because its to hot

paul, January 2007