Garage door reverses during closing before reaching the floor; opener lights flash 2 times, pause, then 2 times (logic board LED code 2-2).

Safety first: A heavy or unbalanced door can be dangerous. If the door is difficult to lift manually, contact a professional to service the springs before adjusting force.

Steps to fix:

• Test door balance: Pull the emergency release cord to disconnect the trolley. Lift the door by hand halfway. It should stay in place. If it falls or rises, the springs need adjustment by a qualified technician.
• Inspect for binding: Check both vertical and horizontal tracks for bends, dents, or misalignment. Ensure all track mounting brackets are tight.
• Lubricate moving parts: Apply a garage door lubricant to rollers, hinges, and bearings (avoid the belt or chain). Do not use heavy grease on the tracks.
• Adjust down force: On the opener head, locate the DOWN force adjustment (dial or screw). Increase the force slightly (1/8–1/4 turn at a time). Do not exceed the manufacturer’s recommended setting.
• Re-engage opener and test: Reconnect the trolley to the door. Run a close cycle and observe. The door should close fully without reversing, and the opener should stop without excessive strain.
• Perform safety reversal test: Place a 2x4 board flat on the floor under the door. Close the door. It must reverse upon contact. If it does not, reduce force and have the door professionally serviced.