The door stops slightly open and cannot be fully closed; the opener strains near the floor.

Safety first: Do not force the door closed with excessive power; this can damage the door or opener.

• Inspect bottom seal: Check for tears, swelling, or misalignment of the bottom rubber. Trim or replace if it drags excessively.
• Clear floor area: Remove stones, ice, or other debris from the threshold.
• Adjust close limit: Raise the close limit slightly so the door stops just as the seal contacts the floor.
• Consider threshold kit: If the floor is uneven, fit a threshold strip to provide a consistent sealing surface.