heat pump & auxiliary heat question
Hi, I just moved to a place that has a heat pump & auxiliary heat. I know the heat pump gets used until the outside temperature gets too cold for it to keep the inside warm, but I was wondering how the system actually knows when to start using auxiallary heat and when to stop using the heat pump heat. I assume it has temperature sensors, but i don't know if they would be located in the thermometer itself or if it is outside in the heat pump unit. All units are different, but is there a simple way to check temperature sensors to see what they are set to?