New nest thermostat will only run the furnace

[Samantha2]

No matter what we do, the only thing that will turn on is the furnace. 

[SoriaD_]

Hello @Samantha2 

Thanks for reaching out to our Nest community. I apologize for all the inconvenience. I'm here to help you with that.

Could you share with me a picture of your wiring configuration?
Also, can you tell me if you have a conventional system or a heat pump system?

Feel free to share with me these details, and I will definitely do my best to find a solution for you.

Best regards,
Douglas.