The principle of defrost heater

Through the heating function of electric heating wire, the defrosting circuit is only available in air-cooled refrigerators. Air-cooled refrigerators are also called frost-free refrigerators. In fact, they do not need to be manually defrosted instead of being frost-free. The defrosting circuit is for the refrigerator to function automatically. Defrost function. The defrost timer is the original part that controls the work of the defrost heater. It calculates the compressor's working period. Generally, the defrost command will be executed after the compressor has been working for 8 hours. At this time, the defrost timer will supply power to the defrost heater. The defrost function is realized, and the compressor does not work at this time.