Start with the garage door.
How to adjust garage door travel limits.
Open the garage door and watch it closely as it opens.
The black button controls the op open movement and the purple or yellow button controls the down close movement.
This video demonstrates how to program the travel on a chamberlain garage door opener with a yellow learn button.
You can do almost anything all you have to do is try.
Setting the up open limit 1.
When the garage door opens about halfway or 5 feet from the ground and stops the up limit switch needs to be adjusted.
Travel limits control how far the garage door will open and close during operation force limits regulate the amount of force used during opening and closing of the garage door.
Door must reverse on contact with 1 1 2 3 8 cm high object or 2 x 4 laid flat on floor.
Locate the open force and close force controls to the right of the travel limit and set buttons on the power head unit control panel.
Incorrect adjustment of garage door travel limits will interfere with proper operation of safety reversal system.
After any adjustments are made the safety reversal system must be tested.
Adjust the close force control to change the amount of force your garage door opener uses to close the door.
Depending on the type of technology and when the mechanism was made there are many ways to make adjustments to a chamberlain garage door opener.