Hi
I wonder if you cen help, i've got a problem with my central heating it will only come on when the hot water is switched on as well. Its a Potterton condenser boiler i think its fairly new, i've only just moved into the house so I can't really be sure.

Thanks

Steve

Sounds like a controler switch. The condensing boiler should heat with out a call for domestic hot water. Best to call for service.