Customer Questions and Answers for Refrigerator Defrost Timer by Whirlpool

Hi Car. All of your questions are answered with a yes. The 2nd "heavy" click starts your compressor in run time. The first "heavy" click will stop the compressor from running to satisfy your cold control setting. The 1st "heavy" click will start the 25-min. of defrost. Sending the 120vac to the defrost thermostat. If your defrost thermostat is closed (14 degrees or lower) it sends the 120vac to the heater. If your heater is good (and not open) your defrost cycle begins. While the heater is in defrost, the defrost thermostat "senses" the rise in temperature and after the coils are defrosted, senses 37-45 degrees and opens stopping the voltage to your heater for safety. Then the defrost timer starts (2nd heavy click) and now you are in your designed run time. The Issue you have is a direct short. I will be more than glad to admit you have had a electrical surge of some sort (poss. Storm) and induced enough voltage to create a direct short in some device which trips your circuit breaker. Can you physically see or smell a burnt part? Is a hot lead wire shorted to ground? by the sounds of it , you may have a bad shorted timer that trips your breakers in defrost, not in run time. The defrost timer part # is WP67001036. Thank you.