I have a Potterton FF80 Fanned Balance Flue Gas Fired Boiler, about 10 years old. Although the boiler will fire up when hot water is called for, it will not fire up when Central heating is called for.
I have changed the Electronic Controller, checked the Thermostat and tried a new programmer. No success. Any ideas please?
I have changed the Electronic Controller, checked the Thermostat and tried a new programmer. No success. Any ideas please?