I am replacing a bathroom vent fan. The fan I replaced had four wires: white, black, blue and ground. The home wiring has four wires(14/3): black, white, red and ground. My new fan a Harbor Breeze made by Hunter Fan has a switch box with a two pin connectors. Each has a black and white wire.

How do I connect the 14/3 to the new fans wiring set?

Did either fan have a light, blue is generally for the light fixture of a fan.