PURPOSE: To expedite informing by detecting a flame failure of a burner by flame detecting means and visually, aurally informing it in a controller for a gas range, etc.,

CONSTITUTION: When flame detecting means 24 detects a flame failure of combustion flame, a flame failure signal is input to a microcomputer 22. The microcomputer 22 drives informing means 34 by the input signal, and outputs a buzzer informing command signal to buzzer driving means 36 to ring a buzzer to be informed. Simultaneously, it also outputs a lamp drive command signal to lamp driving means 31 to switch ON/OFF a thermal power display lamp to be informed. Then, a switching valve 29 is closed by solenoid valve driving means 26 to stop combustions of burners 3, 4 for a movable cooking stove.