Sanyo Electric Co., Ltd.

Tokyo Sanyo Electric Co.

Yoshitaka Takahashi

Mitsuru Kakinuma

The present application discloses a control device for an ice making machine to make ice by circulating ice-making water to an ice making member having a refrigerating system, said control device comprising a timer circuit to be operated simultaneously with or with a delay after the start of an ice making operation and adapted to control a period of time during which an ice making operation is performed, a temperature sensing element whose impedance varies with the variations of the ambient temperature around the refrigerating system, so that an input voltage applied to the timer circuit may vary with the variations of an impedance of the temperature sensing element, thereby to automatically control the period of time during which an ice making operation is performed, whereby the thickness of ice made when one cycle of an ice making operation is completed, may be maintained constant at all times. According to the present invention, provision is made so that, if a condenser is clogged with dust or dirt, an indication is given of such clogging.

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