Opener light flashes 10 times when trying to close, and door does not move.

Safety first: Never bypass the safety sensors by twisting wires together or taping over them.

• Observe light flashes: Count the flashes; repeated sets of 10 typically indicate a sensor issue on many openers.
• Clean lenses: Wipe each sensor lens with a soft cloth to remove dust and cobwebs.
• Realign sensors: Adjust each sensor until both LEDs are solid. Tighten brackets.
• Check wiring continuity: If one LED is off, inspect and repair the wiring back to the opener head. Replace the sensor pair if wiring is intact but no power LED.