Hello. I have a problem with my thermostat. The inside temp is 68. I set the thermostat to 70. Once the inside temp gets to 70, it won't cut off it keeps running. I can hear a click calling for it to cut off, but it keeps running. I need help because if not I'm going to have to cut it off or pay a high electric bill! It also 37 degrees in ga, so someone please help me!