What typically goes wrong with these things? The display is stone dead suddenly
Loss of power to it. Check 12v supply. Download the manual for the thermostat and follow the troubleshooting guide. Unusual for the problem to be the actual thermostat.https://www.gulfstreamcoach.com/media/uploads/1/11534_Duo-Therm-Comfort-Control-Manual.pdf
Does it have a battery?
Source: Yikes! Thermostat Quit Working!
