| 摘要 |
PURPOSE:To prevent foods within a refrigerator from being decayed due to a failure of a defrosting heater or the like by a method wherein after an electrical energization of the defrosting heater, if a temperature of a defrosting temperature sensing means is not increased and a time of a defrosting timer is longer than a set time, a control means to be alarmed by an alarm means is provided. CONSTITUTION:When a timer 15 counts for a predetermined time, a compressor 9 is turned OFF and a defrosting heater 10 is turned ON. Then, a temperature of a defrosting temperature sensing means 11 is checked and if the temperature is low, a counter for a defrosting timer 19 is counted up. Then, a value of counter of the defrosting timer 19, i.e., an electrical energization time for the defrosting heater 10 is read and if the time is shorter than a set time, the compressor 9 is turned OFF and in turn if the time is longer than the set time, the defrosting heater 10 is turned OFF and then an output is made to an alarm means 17. Accordingly, in the event that an electrical energization time of the defrosting heater 10 is excessively longer while the temperature sensing means 11 is kept low, it can be judged that the defrosting heater 10 has a failure and then this state is informed to a user with an alarm means 17 such as a buzzer or an LED or the like. With such an arrangement, it is possible to prevent a decay of the foods in the refrigerator. |
