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Misaligned Garage Door Sensors: Common Operational Issue

One of the most common causes of garage door malfunctions is misaligned sensors. This is basic and generally simple to correct; however, it is an often overlooked caused. One of the first things a garage door tech inspects when a client states that it will not close properly is the sensor.

The sensors, or eye, for an automatic garage door is in place to increase safety. If this sensor detects something in the path of the door, it will not allow the garage door to close. One sensor is placed on either side of the door and they create a beam of light. Should that beam be interrupted, the door will not close. This prevents not only property damage, but injuries and even death.

Simple Fixes

In most cases the sensors that complete the beam or eye is pretty delicate and can be easily jarred out of line. If the beam is not properly aligned, the sensors perceive this as an object. The door no longer closes because the sensor believes that someone or something is in is path. A simple adjustment to realign it generally does the trick.

  • Evaluate the situation to determine the exact issue. A garage door which will open, but not close indicates that the eye requires some adjustment. This is also true, if it only closes part of the way and then opens again. In some cases, the indicator light may blink a couple of times and/or it may click during operation.
  • Inspect the area in the path of the sensor beam to ensure nothing is in its way. Very small objects as well as only the corner or tip of an object in the path can disrupt the beam.
  • Check to see if the LED lights are on. If one is off or blinking and the other is on, it is possible one of them received a slight bump. Try manually manipulating the sensor which is off gently and only very slightly. When/if the light turns back on, the garage door should operate properly again.
  • Another common sensor issue is that they simply need to be cleaned. It is a good idea during your periodic visual inspection of the garage door to include cleaning the sensor eyes. Use a damp, clean cloth to gently wipe the clean. Try the manual adjustment once again to see if both lights will turn on now.
  • Loosen the bolts and screws securing the pivot brackets in order to adjust them slightly. Try moving them up, down, in, and out. The return of the LED lights usually indicates that the beam is connected and functioning properly again.
  • Sometimes the sensor are not mounted at the exact same height which is extremely important to their proper functioning. You or your garage door specialist may need to remount them at the correct height.
  • Visually inspect all of the wires which lead to and from the photo eye. Gently untangle any that have become twisted. In the event that you find damaged wires contact a professional technician to come and repair them.

Rely on our Expertise

Most sensor issues require only simple quick fixes. It can be more complex and/or serious. Those who have no experience or the time to correct the issue should contact a professional repairman. Our team at Perfect Solutions is ready and waiting to answer all of your garage door questions or visit your home to correct any sensor issues that your family may be having.

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