Do not retain potentially unsafe food merely as a demonstration. Follow food-safety guidance and make appropriate storage or disposal decisions first.
What the observation tells you
A photograph, packaging details and a clear timeline can preserve useful evidence without leaving contaminated or deteriorating food in the cabinet. The engineer needs the appliance symptoms, not a taste test. Refreezing questionable food also changes its appearance without restoring its history.
A useful next step
Record what you observed safely and explain any food transfer or disposal. Keep the relevant temperature and warning information. Ask the booking team what appliance evidence would be helpful without delaying necessary food action.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.