A/C not kicking on

I am hoping someone can help me figure out why my A/C outside unit won’t kick on when I turn the A/C on on my thermostat.

We installed our thermostat in the winter and so haven’t used the A/C. We went to turn the A/C on now that it is hot outside and its just running the fan. The outdoor A/C unit does not turn on. I’m wondering if anyone can tell if our wires are misconfigured.

You used the C adapter.
I need to see how you wired the C adapter, and the wiring on your air handler board.

You might not actually need the C adapter, if the other end of your thermostat wire has a blue wire on it.