I need help. I've been surfing the internet and have had no luck finding answers to my situation so am hoping for some guidance. I've seen other questions here answered but none that suit my issue so am hoping it can be addressed with some recommendations.
I too am trying to install (or power up) my c-wire for a new smart Honeywell Thermostat. As all sites and videos I found show, all I have to do is hook up the unused blue wire which was both available on both ends on our thermostat and the furnace board. The thing is, I installed both blue wire and still no power to the new smart thermostat. I troubleshooted a variety of things from checking the fuses, etc. I've attached a photo of the furnace board with the blue already attached as pictured The other set of two wires was to my AC unit which I kept the same.
For now, I installed back the old thermostat and it functions properly so power looks be working (blue wire remains unconnected for the old one) as pictured.
Looks correct, but I'm not an HVAC person. Any advice on other ways to troubleshoot would be appreciated.