1 minute buzz noise in Freezer

Hello
Are you going by the customer complaint? Does the unit have an ice maker? It sounds like it could be the water inlet valve cycling every hour and causing the buzzing noise. This unit has a 115 volt evaporator motor and would not cause this type of issue unless you have a evaporator fan blade out of balance . If it has an ice maker I would shut it off and see if it corrects the issue. If it does not have an ice maker replace the evaporator fan blade. Matt Ace technician

Hi. When the buzz occurs is the fan running or not? Make sure all of the grommets and seals are good on and around the fan. This buzz could just be a vibration noise. I have had the fans vibrate the evaporator cover and create noise. Press your hand on the evaporator cove and see if the noise changes or stops. There could be some food pressing up against the cover creating this. Make sure all the screws are installed into the cover. Also, there could be ice/ condensation build up on the fan blades causing this noise. If so, make sure doors are sealing and no warm air is entering the unit to create this condensation/ frost.