My thermostat is not activating any system controls. It is not turning on heat, AC, nor the fan. The thermostat is powered up but not controlling anything. Only way I can get thermostat to activate ate my heat pump is in test mode. I have noticed that ter was an update to the system 2 days ago. Since then my system has not operate. But for those 2 days the temperature was perfect for my settings. But this morning it was cooler and the system was operating. I have reset, pull thermostat off the wall. I have this thermostat for almost 3 years. So my wiring is connect right. Really no problem until now.
