| 摘要 |
PROBLEM TO BE SOLVED: To detect with a single abnormality detector whether any one of two fan motors is locked in a refrigerator. SOLUTION: There are provided current value detection means for detecting the total sum of currents flowing through an in-refrigerator fan motor 17 and a machine chamber fan motor 17A, revolution detection means for detecting revolutions of the fan motors 17, 17A, and alarming means. When there is elapsed for a predetermined time interval the state where the total sum of the currents flowing through the fan motors 17, 17A are larger than a lock current based upon an output of the current detection means, it is judged that any one not rotated of the fan motors 17, 17A is abnormal, and the alarming means is actuated. |
