PURPOSE: To improve operational efficiency by adding a memory storage.

CONSTITUTION: A memory storage 27 is added to memorize conditions of setting levers of a mode setting unit 22 and a temperature setting unit 23 as fixed informations. In this construction, on the basis of modes of air introduction and blowoff set by the mode setting unit 22 and the room temperature set by the temperature setting unit 23, actuators 24aW24f provided for controlled elements respectively are operated according to the output signal from a sensor circuit 25 by a controlling unit 21 through a power servo unit 26. Meanwhile, output signals from both setting units 22 and 23 are memorized in the memory storage 27 as fixed informations by the operation of a push button switch 28 with holding function, and command signals to the controlling unit 21 are separated from outputs of both setting units 22 and 23. Consequently, conditions once set are memorized without reference to the closing or opening of an electric source and the lever position, and the controlling on the basis of these informations serves to improve the operational efficiency.