My sub zero 642 just starting making a humming
My sub zero 642 just started making a loud humming sound in the freezer. When the door opens it stops, what could be causing this?
Refrigerators - Sub-Zero - 642
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Answers & Comments
I know this sounds so stupid but I see this sort of thing at least once a week it's vibrating on cab. Or the main thing is a bolt came loss and when you open the door it aplies weight down and it will make the bolt or nut vibrate being a sub zero it could be the compresser on top or the trim or the cabinet virating on back of shell. Hope this helps
It is your evaporator fan. When the door opens power is cut to the fan motor.