A pizza or intensive-base programme often gives additional emphasis to heat from below. Its result depends on the tray, shelf and food it is designed to use.
What the observation means
A thin metal tray and a dark baking surface can produce a different base from a thick ceramic dish. Switching to pizza mode without changing a previously suitable shelf position can therefore alter the result substantially. The name does not mean every pizza, frozen snack or pastry should use the same temperature. Manufacturer cooking tables remain the reference for the particular appliance.
A useful next step
Note the base colour separately from the topping colour and centre temperature. If the base is already too dark, simply extending cooking to finish the topping may worsen it. Follow the food and appliance instructions for the next suitable preparation. A sudden change with the same verified mode and tray is more useful evidence than comparing unrelated recipes on different settings.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.