In an agricultural product storage system, product is stored in a bin having a condition sensor associated therewith and a conditioning device for conditioning the stored product when activated, for example an aeration fan. A controller in communication with the sensor and the conditioning device, operates the condition device in response to the sensed condition of the product according a selected one of a plurality of different control functions defining different control parameters of the conditioning device. The controller selects among the different control functions based upon the changing state of the of the storage bin.
