When your smart control component starts giving you concerns and you think it is about to cut down, the first thing you want to do is go over to it and look for a red light that will be on. What this red light means on the smart control component that I have is that the battery is low and it is time to change it within 48 minutes. If you chose to ignore it, your smart control component will stop working and so will your central heating, ventilation, and A/C method component until you go and change the battery. Some people do not even think that the smart control component is ran on a typical AA battery. 4 of them to be exact (at least that what it is in our smart control unit). When I first had our smart control component and the batteries went for the first time, I will never forget the lesson I l earned by wasting a few hundred dollars on calling the local heating, ventilation, and A/C company to send out a certified heat and a/c specialist to repair our central Heating as well as A/C system. When in fact nothing was wrong with the central heating, ventilation, and A/C unit. It was simply that our smart control component needed to have the batteries updated! After learning that rather costly lesson, I am telling everyone I believe that has a smart control component about the batteries in the event they do not believe this. Some looked at myself and others as if I was stupid as they knew about it, and thought everyone should. But a few were just adore myself and others and had no clue!