JPS5560148A - Control device for air conditioner - Google Patents

Abstract

PURPOSE: To avoid a useless operation for preventing cold air from blowing in where room temperature is high by retarding blower running until temperatures of a heat exchanger on the room side become higher than room temperature by a given temperature when room temperature is lower than a set temperature at the beginning of operation for heating.

CONSTITUTION: Temperatures TR, TC are detected through a detection circiut 9 according to signals from sensors 10, 11 provided in a room to air-condition and an air conditioner on the room side at the beginning of operatiok for heating. The temperature TR is converted to a binary signal and inputted to a room temperature control circuit 12, a cold air preventing detection circuit 13 and a cold air preventing release circuit 14. On the other hand, the temperature TC is also converted to a binary signal and supplied to above circuits 13, 14. The cold air preventing detection circuit 13 stores a minimum set temperature TSO of a thermoregulator 15 and a given temperature TO in the form of binary signal and carriers out a relative operation TR<TSO, TC<TR+TO at start-up. Where both expressions are compatible each other, it stops the blower on the room side and operates to run in delay.

COPYRIGHT: (C)1980,JPO&Japio