Use the model's guidance and actual storage information rather than changing both controls automatically. The permitted ambient range and ventilation remain important.
What the observation tells you
A colder target cannot repair a door gap, blocked grille or an unsuitable location. Repeated adjustments also make it difficult to judge the response. Food safety requires appropriate conditions in each compartment, regardless of how cold the selected numbers look.
A useful next step
Keep normal loading and brief openings, check relevant temperatures and follow any specific hot-weather instructions. Seek assessment if the appliance cannot maintain suitable storage under its intended conditions.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.