Liebherr CS 1650: SuperCool turns itself on and off

[PL123]

I have a Liebherr CS 1650 refrigerator with the "SuperCool" feature.  You press the button and it cools the fridge to 36 degrees for 6 hours then reverts to the previous temp setting.

It beeps when you press the button.

Problem is the feature goes on and off by itself hundreds of times a day.  Every time it goes on or off it beeps.  15-second video: https://youtu.be/KFir_VuR28k

I couldn't care less if the feature works but it has to stop beeping!!!

Happy for any suggestion how to fix it or disable the feature or disable the beeping.

[PL123]

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