Record from a safe ordinary standing position with the appliance left in place. The aim is to preserve the sound's pattern, not to place the phone beside exposed machinery.
What the observation tells you
Start by saying whether the door is open or closed and whether a cooling mode is selected. Keep the same distance for later comparisons. A microphone pressed against a panel exaggerates vibration and may make a modest sound appear much louder.
A useful next step
Do not move the appliance, remove covers or repeat unsafe starts to obtain a recording. Pair the clip with a description of cooling performance and the time the unfamiliar sound began.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.