HUMMING NOISE WHILE DEFROSTING
Humming sound when in defrost mode
Is humming sound heard during defrost?
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.