asked

I have two Sub Zero refrigerators, one with a serial number M1143622 built in October 1994. About a year ago, my freezer stopped reaching 0 degrees and averaged between 5-20 degrees depending on the outside temperature. A repairman recharged the freon, but now the freezer makes a loud vibrating noise that starts after turning it back on. The noise is usually at a 7 out of 10, but sometimes reaches a 10. The freezer now freezes perfectly but the noise is very disturbing. What could be causing this noise?

October 6th, 2023

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