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Humming noise during defrosting mode

  • Noises
  • Other Noises While Cooking
  • Troubleshooting
  • Microwave Ovens


Humming sound when in defrost mode



○ Cause          

      Is humming sound heard during defrost?


○ Troubleshooting

      During defrosting, the microwave oven will circulate the air throughout the cavity by running

     the fan. The Magnetron will turn “on” and run for a short moment, then shut itself “off” while

     the fan continues to circulate the air around the food.


     This allows for proper defrosting while avoiding overcooking the food.





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