Edit ArticleHow to Align Garage Door Sensors Garage door sensors protect your family, possessions and pets by not allowing the heavy garage door to close if there is anything in the glide path. They do this by using an electric eye sensor that crosses the doorway. If the sensor doesn't receive the beam emitted by its opposite number, the door won't close. This seems like a clever device until the components come out of alignment -- meaning the door won't close at all. Fortunately, it's not difficult to realign the sensors and put things back into working order. Turn off the power to your sensors by tripping the fuse for your garage. You'll find this in your home's breaker box. You won't actually be working with the electrical wiring, but it's always best to be safe when working with electricity. Loosen the screws that mount each of your garage door sensors. Slide each garage door sensor downward so it is as low as possible without unscrewing the mounting brackets.
Tie a string to one sensor so that, if pulled across the garage doorway, it will run across the center of the sensor. Run the string across the garage doorway and tie to the opposite sensor. Lay a level so the bottom runs along the string. Check that the line of the string is level. If the line of the string isn't level, adjust 1 or both garage door sensors by sliding the mounting bracket upward. Continue until the sensors are once again level. Tighten the screws to secure the garage door sensors in their new position. Confirm that the string is level before finishing. Finish by removing the string and turning the power to your garage back on. Show more unanswered questions If you have a laser level, you can use it instead of a string to align your garage door. In this case, you will set up the level aligned with one sensor, then adjust the opposite sensor until the beam of your laser level is hitting the sensor. Proper height for a garage door sensor is 4 to 6 inches (10.2 to 15.2 cm).
Higher than that can miss many low-lying objects, including pets. Lower is easy to stand above with a foot on either side. If your garage door sensors are outside of this range, remove them entirely from the garage door frame and install, leveled, inside the safe zone.Get expert tips and advice while watching our pros install, program and troubleshoot Chamberlain products. Find more installation videos and learn about new product innovations on Chamberlain’s YouTube channel. Learn how to install your new Chamberlain garage door opener and accessories!How do I test or troubleshoot the safety reversing sensors? The safety reversing sensors must be connected and aligned correctly before the garage door opener will move in the down direction. Typically issues with the safety sensor wiring occur because of a poor connection, incorrectly connected wires, or a short in the wire from a staple. 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.
If both safety sensor LED lights are not lit Security+ 2.0 garage door openers have an energy conservation feature. If the garage door opener is Security+ 2.0, have the customer activate the door to determine if the opener was only in sleep mode. See Security+ 2.0 energy conservation feature Check for incorrect wiring between the sensors and the garage door opener. Verify the wire connections are correct on the garage door opener. The solid white wires connect (insert) to the white terminal (2) and the white/black wires connect to the grey terminal (3). NOTE: The amber LED on the sending sensor will glow regardless of alignment or obstruction. If the green LED on the receiving sensor is off, dim, or flickering (and the invisible light beam path is not obstructed), alignment is required. See How do I align my safety reversing sensors? Test the safety sensor wires. Remove the sensors from the brackets. Remove the wires from the wire nuts or cut the sensor wires 12" from the sensors.
Strip both ends of wires from each sensor and twist like colored wires together. Proceed with both sensors to the garage door opener motor unit. Remove existing wires from the white and grey terminals on the back of the operator. Attach or insert white wires into the white terminal and black/white striped wires into the grey terminal. Point the sensors at each other - if both sensor LED's turn on, there is an issue with your wiring. Replace the wires between the opener and the sensors. If the LED’s DO NOT turn on, replace the sensors. Note: If after replacing the sensors, the LED's still do not light, replace the logic board. Answers others found helpful How to align safety reversing sensors Safety Reversing Sensors Installation Instructions How to wire safety sensors to a garage door opener How do I install my safety reversing sensors in a pre-wired garage? How should I position my safety reversing sensors when I am installing two garage door openers?
Secure your garage by changing the door code from time to time. If you think someone knows the code to open your garage door or your remote has been stolen, it is time to change the code on your garage door opener. Newer garage door openers have a keypad in addition to the remote, which makes it slightly easier to change the code. If you have an older garage door that is only operated by a remote, you must physically move the switches inside the remote and door opener to change the code. Place a ladder beneath the garage door’s motor unit to reach the unit. Press the learn button located on the side of the motor and hold it down. Release the button when the light beside it goes out to remove the old code from its memory. Push the learn button on the motor again, so its light comes on again. Enter the desired code on your keypad on the garage wall. The motor unit’s light blinks to indicate that the new code has been accepted. Press the learn button on the motor once more, so the light on the motor lights up again.