The appliance's restart behaviour and retained modes depend on the model. Confirm both compartment targets rather than assuming the last visible screen describes the complete state.
What the observation tells you
A power return may also reveal a stored temperature warning. Clearing it too quickly can lose useful information. Even if settings are unchanged, the food may have warmed during the interruption, so a normal display does not settle its safety.
A useful next step
Record warnings and the known outage duration, follow the startup guidance and assess food appropriately. Avoid repeated disconnection in an attempt to make recovery happen faster.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.