Safety sensors are an essential feature of modern garage doors, designed to prevent accidents and injuries. These sensors ensure that the door doesn’t close if there’s an obstruction, protecting people, pets, and property. However, like any other component, safety sensors can fail over time, leading to potential hazards. In this blog, we’ll explore how garage door safety sensors work, common reasons they fail, and what you can do to address these issues.

How Garage Door Safety Sensors Work

Garage door safety sensors typically consist of two devices installed on either side of the door near the ground. Here’s how they function:

1. Infrared Beam
   The sensors work by projecting an invisible infrared beam between the two units. When this beam is unbroken, the garage door operates normally.
2. Obstacle Detection
   If an object or person interrupts the beam while the door is closing, the sensors send a signal to the opener, halting the door’s movement and reversing it to the open position.
3. Fail-Safe Mechanism
   Sensors are designed to ensure that the door doesn’t close unless the beam is clear, providing an additional layer of safety.

Common Reasons Safety Sensors Fail

Despite their critical role, safety sensors can experience issues due to a variety of reasons:

1. Misalignment
   • If the sensors are bumped or moved out of alignment, the infrared beam can’t connect properly, causing the system to malfunction.
2. Dirt or Debris
   • Accumulated dust, dirt, or spider webs on the sensor lenses can block the beam, making it seem like there’s an obstruction.
3. Wiring Issues
   • Damaged or frayed wires can disrupt the connection between the sensors and the opener, leading to erratic behavior.
4. Sunlight Interference
   • Direct sunlight hitting the sensor can mimic an obstruction, preventing the door from closing.
5. Sensor Malfunction
   • Over time, wear and tear or electrical issues can cause the sensors to fail entirely.

How to Troubleshoot and Fix Sensor Issues

Here are some steps you can take to resolve common problems:

1. Check Alignment
   • Ensure the sensors are perfectly aligned. Most units have indicator lights—if the lights aren’t steady, realign the sensors until the beam connects properly.
2. Clean the Lenses
   • Gently wipe the sensor lenses with a soft, dry cloth to remove any dirt or debris.
3. Inspect the Wiring
   • Look for signs of damage or loose connections in the sensor wiring. If you notice any issues, it’s best to consult a professional.
4. Shield from Sunlight
   • Use shades or covers to block direct sunlight from affecting the sensors.
5. Test the Sensors
   • After adjustments, test the system by placing an object in the path of the beam to ensure the sensors respond correctly.

When to Call a Professional

If you’ve tried troubleshooting and the problem persists, it’s time to seek professional assistance. For homeowners in Stevenage, Access Garage Doors offers expert repair and maintenance services for all garage door components, including safety sensors. Learn more about our services for garage doors Stevenage to ensure your system is operating safely and efficiently.

Conclusion

Garage door safety sensors are a critical part of your system, protecting your family and property from accidents. Regular maintenance and prompt attention to issues can keep them functioning properly. However, when problems arise that you can’t fix yourself, trust the experts at Access Garage Doors to provide reliable solutions.

Contact us today to schedule a service or learn more about keeping your garage door system in top shape!