I have a 14 year old Ravelli Pisa. The chronothermostat settings allow me to set a time for the stove to come on and off, but seems to be working erratically - for example, not coming on or switching off as programmed, or even coming on when set to 'off'. I'll play around with it and maybe just try switching the power on and off to reboot, but I wonder if anyone else has experienced this? Motherboard issue, perhaps?