Disclosed herein are a refrigerator includes an ice storage, a transfer member, a transfer motor coupled to the transfer member, and a controller configured to control the transfer motor to rotate the transfer member in a first rotation direction and a second rotation direction, wherein the transfer member prevents the ice cubes stored in the ice storage from agglomerating by rotating in the first rotation direction and the second rotation direction. The controller warns a user of agglomeration of the ice cubes stored in the ice storage in response to no rotation of the transfer motor sensed.