Why do I have hot water but no central heating?
Why do I have hot water but no central heating? If you've got hot water, but no central heating then there are more issues it could be if it's not the thermostat or the boiler pressure. Common reasons for this particular fault are broken diaphragms and airlocks, or a motorised valve failing. What does it mean when your boiler says D? What does status 'D' mean on an Ideal boiler screen? 'D' means that the boiler is fired up for a hot water demand. Like 'C', this can be resolved by pressing reset on the front of the boiler and...