My Honeywell Thermostat Is Not Blowing Air From Vents!?

I just moved into this house and I do hear it working from the main duct. However, it is not either sucking or blowing any air. All other vents are open but nothing comes out. I don't know how to program it right or something
Hopefully any of you guys have had some experience on this type of problem. Thank you so much!
I have a Honeywell - T8112C1007 electronic (digital) thermostat