Hello, a complete newbie to this forum so apologies in advance for any silly questions or comments. I have a Halstead Finest Gold, about 10 yrs old now. The CH has stopped working and I'm not sure which way to go. The boiler is showing some very peculiar symptoms. When I turn on the HW both micro switches (for HW and CH) are firing and I do get HW. When I turn the HW off both switches turn off. When I switch on the CH I get absolutely nothing at all. No sound from the boiler, no switches firing. The boiler has a mechanical clock which controls the CH, which I have disconnected but even with the thermostat set to high, there's no life from the boiler. On top of that, the diverter valve is leaking, could this be the culprit? Could it be an electrical and mechanical problem or is it possible that by changing the diverter valve the CH problem will also be fixed? Thanks to all in advance.