Do you have a question about the Ayce FSF-A(2D) and is the answer not in the manual?
Control fan speed using '+' and '-' buttons; indicators show selected speed level.
Switch between Summer and Winter modes for different airflow patterns.
Set operating time in increments up to 7 hours using the Timer button.
Change airflow direction (front to back or back to front) with the Reverse button.
Enable automatic left-right oscillation; manual up-down adjustment also possible.
Adjust fan height by pressing the button on the upright and pulling upwards.