Have you ever found yourself in this situation: Your garage door will not close using your remote control?

And on further inspection, you notice that the garage door opener light is flashing?

You change the batteries on the remote, but the door still won’t close. What’s going on here?

Misaligned safety reversing sensors could be the issue. Watch this brief video from LiftMaster detailing how you can align the safety reversing sensors, and get your door working again. Please read your owner’s manual for complete instructions and safety information.

When the safety reversing sensors are properly aligned, and the wiring connections are correct, the LEDs on both the sending and receiving sensors will glow steadily. The sending sensor will glow amber regardless of whether there is proper alignment or an obstruction. If the GREEN LED on the receiving sensor is dim, flickering, or off (and the invisible light beam path is not obstructed), then alignment is required.

(On older safety sensor models, both LED lights are green. The receiving sensor is the sensor that the green light goes out when you pass your hand in front of the sensor. The sending sensor stays solid.)

For quick reference, we’ve outlined the simple steps for you:
1. Remove the wing nut, and remove the receiving sensor (green LED) from the bracket.

2. Point the sensor away from the sending sensor, so that the LED light is  completely off.
3. Once the LED light is off, wait for 10 seconds.
4. Slowly rotate the sensor back until it lights again. When a strong green light is present, place the sensor back into the bracket and put the wing nut back on.
NOTE: If you are unable to get the door closed and the safety sensors are the issue, the garage door can be closed by pressing and holding the door control push bar until down travel is completed.

  • WARNING:Without a properly installed safety reversing system, people can be SERIOUSLY INJURED OR KILLED (especially true of children) by a closing garage door. Incorrect adjustment of door travel limits will interfere with proper operation of safety reversal system. After ANY adjustments are made, the safety reversal system MUST be tested.The door MUST reverse on contact with 1 1/2″ (3.8cm) high object, or a 2×4 laid flat on the floor.”
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  • If you are still having issues, call us to book an appointment, and one of our technicians will get your door operating properly and safely again.

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