I am trying to install a new wifi thermostat in my home and need to locate the common terminal for my air handler. I have a Carrier model FB4CNF030. It's a new construction home and I have the blue common run but it is not connected at the air handler side
I've referred to the post at Options for adding "C" wire to thermostat and understand the purpose of the common but still don't know where to hook it up. I can't find the wiring schematic for this unit.
Any suggestions are greatly appreciated.