On June 5, I will be heading over to visit my aunt in Virginia Beach. She has purchased a Filtrete 3M50 thermostat, and she wants me to install it for her. Her system is a heat pump with electric auxiliary heat. Looking at the wiring instructions here:
The worded instructions say to connect the R wire to the RH terminal, while the diagram shows it connected to the RC terminal. Which is it? Does it actually matter considering there is a jumper between the two terminals?