Some ovens have a showroom or demonstration setting that operates the controls without ordinary cooking heat. Its presence and cancellation method are model specific.
What the observation means
This possibility is particularly relevant after a new installation, a replacement control module or a deliberate settings reset. It is less useful as a blanket explanation for an established oven that suddenly stopped halfway through a meal. Do not try random service-menu combinations found for another model, because they may alter unrelated settings or enter technician-only functions.
A useful next step
Check the user manual for a visible demonstration indicator and the approved owner procedure, if one is provided. Record the complete message before changing anything. If the manual does not identify the display state, contact the manufacturer or booking team with the model reference. A working clock or touchscreen proves only that part of the appliance is powered; it does not identify why cooking heat is absent.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.