A whole-appliance mode may change more than the screen currently visible. Check the manufacturer's stated targets and whether they suit all food being stored.
What the observation tells you
An energy label on a button is not a guarantee that every chilled and frozen product remains under its required conditions. One compartment can appear unaffected while the other has a different target. Accidental mode selection can therefore complicate a temperature complaint.
A useful next step
Record the active mode and both settings, then monitor appropriate storage. If the mode is unsuitable for the contents, use the documented normal setting rather than ignoring the food labels.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.