Record the sequence and cooling result rather than naming the clicking component. A click can accompany normal switching, but repeated unsuccessful starts or warming need assessment.
What the observation tells you
The useful distinction is whether this is a single familiar event or a new recurring pattern. Do not pull the appliance out or touch machinery to find the sound. A brief recording from a safe normal position can preserve the evidence.
A useful next step
Note the interval, any display change and suitable thermometer readings. Stop using the appliance if there are burning smells, smoke or electrical damage, and protect stored food while the issue is investigated.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.