When your smart thermostat starts giving you issues and you think it is about to break 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 thermostat that I have is that the battery is low and it is time to change it within 48 hours.
If you chose to ignore it, your smart thermostat will stop working and so will your central heating and air conditioning system unit until you go and change the battery. Some people do not even think that the smart thermostat is ran on a standard AA battery. 4 of them to be exact (at least that what it is in my smart thermostat). When I first had my smart thermostat and the batteries went for the first time, I will never forget the lesson I learned by wasting a few hundred dollars on calling the local heating and air conditioning company to send out a certified heat and a/c specialist to repair my central HVAC system. When in fact nothing was wrong with the central heating and air conditioning unit. It was simply that my smart thermostat needed to have the batteries replaced! After learning that rather pricey lesson, I am telling everyone I know that has a smart thermostat about the batteries in the event they do not know this. Some looked at me as if I was stupid as they knew about it, and thought everyone should. But a few were just like me and had no clue!
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