Refrigerator and control method thereof

A refrigerator comprising:

• a cabinet that defines a freezing chamber;
• an evaporator located at a side of the freezing chamber;
• a freezing chamber fan configured to supply cool air generated by the evaporator to the freezing chamber;
• an ice maker located inside of the freezing chamber and configured to perform ice-making based on cool air supplied by the freezing chamber fan;
• an ice bin located vertically below the ice maker and configured to store one or more ice pieces made by the ice maker;
• an ice detector that is configured to detect an amount of the one or more ice pieces stored in the ice bin and that is configured to generate a detection signal based on whether the amount of the one or more ice pieces in the ice bin is greater than or equal to a threshold amount;
• a temperature sensor configured to detect a temperature of the freezing chamber;
• and
• a controller configured to control driving of the freezing chamber fan based on the detection signal,
• wherein the controller is configured to:
• turn on the freezing chamber fan based on the amount of the one or more ice pieces in the ice bin being less than the threshold amount,
• vary an operation speed of the freezing chamber fan based on the ice detector detecting that the amount of the one or more ice pieces in the ice bin corresponds to an ice-fullness, and
• turn off the freezing chamber fan based on the temperature of the freezing chamber being less than a predetermined temperature after the ice-fullness is detected by the ice detector.