Our CH & hot water is controlled by the Drayton LP241. The heating works fine but we have a problem with the water. Since returning from holiday and switching things back on, the hot water just will not turn off, whatever the setting shows, even in the "off" setting. I hae been through the whole programming sequence again, to no avail. Oddly, the same thing happened with our original programmer which we replaced about 2 years ago. Can this be fixed or do we hae to replace again? Does anyone know if this is a common problem with this model.