| 摘要 |
PURPOSE:To make it possible to detect which sensor is abnormal instantly by energizing an error display part corresponding to the sensor based on the resistance value when the electric resistance value of the sensor becomes abnormal. CONSTITUTION:Temperature sensors 1 - 7 which are provided in a refrigerator are constituted as temperature-resistance type sensors so that temperature change is taken out as the change in electric resistance. When the electric resistance value of any of the temperature sensors 1- 7 becomes abnormal, an error display part corresponding to said sensor is energized based on said resistance value. For example, when the resistance value corresponding to the temperature less than T1 is reached, i.e. the resistance value becomes excessive, the abnormality of the sensor is displayed as wire breakdown or outage from controller action. When the resistance value corresponding to the temperature higher than T2, i.e. the resistance of 0, is approached, the abnormality of the sensor is displayed as a short circuit. Thus, which sensor fails can be detected. Therefore, the appropriate countermeasure can be taken immediately. |
