LiftMaster Safety Reversal System Activated

Garage door will open but will not close from remote; must hold wall button down to close.

Advertisements

Possible Causes

Misaligned or blocked safety sensors, sensor wiring fault, sensor LED off or flickering

How to Fix / Troubleshooting

Safety: Holding the wall button overrides the safety sensors; only do this while watching the door and as a temporary measure.

  • Check sensor LEDs: Confirm both safety sensor LEDs are solid. If not, realign or repair wiring as described in sensor entries.
  • Clean lenses: Wipe sensor lenses with a soft cloth.
  • Secure brackets: Tighten sensor brackets so they do not move when the door vibrates.
  • Test: Once both LEDs are solid, the door should close normally from the remote.
Advertisements

Repair Difficulty

Easy 2/5

Required Part

Safety Sensors
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements