I would try plugging a simple induction motor into the refrigerator circuit to see if it also makes a weird noise. It's possible you have a problem with the wir

I would try plugging a simple induction motor into the refrigerator circuit to see if it also makes a weird noise. It's possible you have a problem with the wiring itself (loose neutral, etc.). I've never had issues with HF noise out of a refrigerator. It's always been the opposite kind of noise that has been a problem.