Re: Bosch GSL14425GB Non compliant with thermo cooling!
-18?C is the optimum temperature for frozen food.
If the temperature is rising to -16?C but going back down to about -20/21?C then cycling back that’s perfectly normal. You’re interested in the mean temperature, not the temperature at any one point really when it comes to the display.
If it’s not cooling and the temperature rises above about -16?C then you have a problem and, TBH, it could be anything without digging a bit more into it.
Are there alarms going off on it?
HTH
K.