Blower Fan Comes on and runs cold air and then shuts off before the gas and heat actually come on
Contrary to JPhi's comment, it is not normal for the "air" to come on for a bit before ignition of the burner. What Ms. Diaz may have been hearing is the combustion air blower coming on, a failed ignition attempt and then shutdown. That is not the blower motor "air" coming on first. Ron Beyer had it right. Check the error code.