PURPOSE: To facilitate the control of an automatic operation mode by making even the actual control function of an air-conditioning system over an air distribution and an air quantity or the like so as to be symbolically indicated in a display in time of automatically operating the air-conditioning system.

CONSTITUTION: When a pushbutton AUTO 2.1 is operated, an air-conditioning system is automatically operated, an actual control function in relation to an air quantity 2.2.5 and air distribution 2.3.5 in addition to a temperature function (temperature target value 4.3) is symbolically indicated on a display 5. With this, an operator is able to recognize an internal control technical process of the air-conditioning system proceeding at real time. Therefore, looking at the display, the operator operates the set function pushbuttons 2.3.1, setting the desired control function.