VENTILATION INTERLOCKING APPARATUS

PROBLEM TO BE SOLVED: To provide a ventilation interlocking apparatus for executing an automatic control of a ventilating amount, an operating state and a display of a fault by facilitating a connection of a cooker controller to a ventilation controller. SOLUTION: A mutual communication is executed by utilizing that a voltage of a connecting point is changed by turning ON, OFF transistors 30, 35 by a microcomputer 17 of a cooker controller and a microcomputer 40 of a ventilation controller 45. Thus, the cooker controller can be connected to the controller 45 only via two lead wires. Further, the connection is made nonpolar by a bridge diode 31. Information of an operating state or a fault state is displayed on a control panel 18. Thus, user can easily recognize the operating state or the fault state.