I have a white rogers thermostat running a Comfort-Aire geothermal combo unit and i think it is broken. When it was hot out we set it to cold and it would work for a few days then we had to leave it to Off for a 10-16 hours and then turn it back on again for it to blow cold. Now it's winter and it's doing the same thing with the heat. It's freezing. The only thing i notice different when the system is not cooling/heating properly is that is says "System On +2" on the display. Also, what is Emergency Mode? Thanks.