Not sure if the age of this system.
Started as a low battery in the thermostat so we replaced it. After that it stopped working, no heating or cooling. Fan doesn't work either. A click can be heard but it never cuts on.
We decided to try another set of batteries, no luck. After looking around some it seems we've had a visitor come chew through a wire. I have no clue what this part is or where to get a new one. How do we go about fixing this? Calling a technician is not an option right now.