Condensor Fan:- 

A condenser fan is used on frost-free refrigerators that have a condenser coil in the bottom of the cabinet, inside the compressor compartment. The fan runs whenever the compressor runs, and it draws cool room air through the front grille, and circulates it through the condenser coils, over the compressor, and back out the front grille into the room. The circulating air helps cool the compressor and the refrigerant in the condenser coils. The air also helps evaporate the water in the drain pan.