Thermostat keep changing temp by itself

Well you may have low bateries or,,,,. This one is a progrmable thermostat. It resets back to factwsetting when ever yhe program time arives. You need to set the temperature and push hold to override. The best way to fix this is program it correctly for the time and temperature you want. If all else fails put a non programable thermostat in its place. Some don't require bateries but they help to keep the program set in case of piwer outages. Aaac service heating and air in McDonough Ga 7708754113 hala