A method for testing a normal operation of a refrigerator, the method including allowing a user to implement an application of a terminal for testing the refrigerator; displaying a list of controllable loads on a display unit of the terminal; allowing the user to select a desired load and input a setting command for the load; implementing a controller of the refrigerator to operate the load according to the setting command received from the terminal via the tag unit; and implementing the terminal to display state information of the operated load on the display unit.