Opener stops mid-travel and reverses; sometimes runs only a short distance; diagnostic LED flashes five times repeatedly.

Safety first: Disconnect power before adjusting hardware. Use a stable ladder when working near the header bracket.

Steps to correct up travel and force:

• 1. Inspect header area: Check the top of the door opening and the header bracket where the Stanley opener arm attaches. Ensure the door is not striking the opener rail or any framing.
• 2. Check top fixtures and rollers: Inspect the top roller brackets and hinges for bending or binding. Replace any bent hinges or rollers and ensure the track is not pinched at the top.
• 3. Adjust up travel limit: Locate the UP LIMIT adjustment screw or dial on the opener head. Turn slightly in the direction indicated to increase travel so the door fully opens without hitting the stops. Make small adjustments and test.
• 4. Adjust up force: Increase the UP FORCE slightly if the opener struggles to lift the door, but only after confirming the door is properly balanced and hardware is in good condition.
• 5. Test full cycle: Run the door through several full open/close cycles, watching for any point where it slows or binds. Correct any mechanical issues before relying on force adjustments.