PROGRAMMING OPEN & CLOSE LIMITS
a) Press and hold SET Button until 1 appears on the display then release the button.
The door opener is now in Programming Mode.
b) Press and hold the UP until the door reaches the desired open position.
NOTE: Fine adjustments can be made by toggling UP &DOWN buttons
c) Now press the SET button to confirm the position. The display will now indicate the number 2.
d) Next press and hold the DOWN button until the door reaches the desired close position. For fine adjustments toggle UP & DOWN buttons.
e) Now press the SET button to confirm the close position.
CAUTION: The door will now cycle open and close to set the travel limits and force sensitivity adjustments. The door is now set for normal operation.
https://www.youtube.com/watch?v=2O1fgMUl-xs