While the microwave is operating, it is normal for it to make a low humming or buzzing sound. This happens for several reasons, but is most commonly due to magnetron oscillation (when the microwave is heating), the vent fan running, or both. It is also normal for the volume of the microwave to slightly increase with age.
If the volume of this noise is significantly louder than it was a month ago, visit our Support Center to request service. We recommend to record the noise to assist the technician.
If the filters are not installed correctly, they can cause a rattling noise.
If all removable parts are installed correctly but the noise continues, visit our Support Center to request service.
A popping sound is normal for foods with high fat or water content, like steak or tomato sauces, and is also normal for other types of food, like potatoes or popcorn. Similarly, any food residue left in a dirty microwave may also make popping sounds.
To test if the noise is coming from the microwave, clean the microwave thoroughly and then microwave a bowl or glass of water. If the popping noise occurs during this test, visit our Support Center to request service.
Select CONTINUE to visit HP's website.
