Garage door reverses immediately after hitting the floor; opens back up fully instead of staying closed.

Safety first: Keep people and pets clear of the door while adjusting. Disconnect power before touching internal components.

Steps to correct reversal at floor:

• 1. Inspect bottom seal: Check the rubber weatherstrip on the bottom of the door. If it is excessively thick or folded, the opener may sense it as an obstruction. Replace with a standard Stanley-compatible seal if needed.
• 2. Check for floor obstructions: Remove any debris, ice, or raised objects where the door meets the floor.
• 3. Adjust down travel: Locate the DOWN LIMIT adjustment on the opener. Turn it slightly to reduce travel so the door stops just as it contacts the floor, not pushing hard against it.
• 4. Adjust down force: Increase the DOWN FORCE slightly so the opener does not interpret normal contact as an obstruction. Make small changes and retest.
• 5. Test safety: After adjustments, place a 2x4 board flat under the door and close it. The door must reverse when it contacts the board. If it does not, reduce force and call a technician.