Why does the fan of my humidor keep running after it reaches the set temperature?

Why does the fan of my humidor keep running after it reaches the set temperature?

Don't worry, the humidor is in power saving mode. It is equivalent to variable frequency, working with very low power, and the fan will keep turning to form a heat preservation effect.
The machine with cooling and heating functions will still work at half power after the temperature reaches the required level, and the fan will still turn even if the power is kept very low.