How to Tell If Your Garage Door Sensor Is Out of Alignment
The garage door safety sensor is the reason your heavy garage door reverses if something is in the way. If it is misaligned, your garage door may not work properly. It might reverse for seemingly no reason or not work at all if the sensor fails. Dirt on the lens is a common issue, but it’s also possible for a sensor emitter or receiver, or both, to go out of alignment.
A garage door sensor, or photo-eye, consists of two devices. One sends a signal and the other receives it on the other side of the garage door opening. This creates an invisible beam that, if broken by anything in its path, triggers the garage door opener to reverse and return the door to its original open position.
What to Look For
If you believe a garage door issue is caused by a misaligned sensor, first check whether an object or stored item is obstructing the light beam between the two units. Perhaps you stored a toolbox nearby or a child’s ball rolled in the way. Remove any potential obstructions. If nothing is in the way, and there doesn’t seem to be damage to the sensors or their wires, then:
- Find your garage door’s photo-eyes. One sensor is installed on the left-hand side and the other on the right. Both are mounted on the inside of the garage door opening, about six inches off the ground. The actual appearance, shape, and design differs depending on the sensor brand and manufacturer.
- Determine the status of each sensor by looking at the LED light on its side. Each should have a steady green light. A flashing red light or no light on at all means there may be a misalignment. If the sensors are properly lit and the door still doesn’t work, check the lens for dirt, dust, or debris and clean off any you find with a soft cloth.
- Measure the height of each sensor unit and use a level to determine if they are aligned. It’s important for both sensors to be at equal heights and facing each other. If not, they may have been installed improperly or the mountings may have been damaged. The best step is to call a garage door repair professional to find and fix the problem.
Can I Fix a Misaligned Garage Door Sensor?
You can adjust a misaligned sensor if there is no damage. First, loosen the screws on the pivot bracket. Then you can move the device up or down and direct one sensor to be in line with the other. Once the sensors are aligned, the LED light will come on.
Test the sensors after the adjustment is complete. To do so, place a cardboard box or other relatively soft object under the door and activate the switch to close it. The system should detect the object and stop the door. However, if a sensor problem persists, the door will close on or even crush the box or object. In this case, you should call a repair professional right away to service your garage door.
Contact Garage Door Doctor for Help
Serving Indianapolis and surrounding areas, Garage Door Doctor can help if your garage door sensors are misaligned, damaged, or not working. Our team of experienced service professionals can address your problem 24/7. We can service all types, makes, and brands of garage doors, openers, and parts. Call (317) 516-0036 today to request same-day service or contact us online to set up a free consultation.