When it comes to testing a garage door sensor, I’ve done it myself and can guide you through the process.

Follow these steps from Liberty Garage Door to successfully test your garage door sensor:

  1. Understand the function of the sensors: Garage door sensors are an important safety feature that prevents the door from closing if an object or person is detected in its path. They work by emitting an infrared beam between two sensors, one on each side of the garage door near the floor. When the beam is interrupted, the sensors send a signal to the garage door opener to stop or reverse the door’s movement.
  2. Inspect the sensors: Start by visually inspecting the sensors. Look for any physical damage, misalignment, or obstructions that may hinder their operation. Clear away any dirt, dust, or debris that may be blocking the sensor’s path. Ensure that nothing is blocking the sensor’s view or impeding the infrared beam.
  3. Check the sensor lights: Most garage door sensors have indicator lights that indicate their status. Typically, one sensor will have a green light, indicating power, while the other will have a red or yellow light, indicating the sensor’s signal status. Make sure both lights are solid or blinking regularly. If either light is off or blinking irregularly, there may be an issue with the sensor or its wiring.
  4. Test the sensor alignment: Close the garage door using the wall button or remote control. While the door is closing, wave your hand or a non-metallic object in front of one of the sensors to interrupt the infrared beam. If the sensors are properly aligned, the door should stop or reverse its movement immediately. If the door continues to close without interruption, there may be a misalignment or issue with the sensor.
  5. Adjust the sensor alignment: If the sensors are misaligned, gently adjust their positions until the indicator lights on both sensors become solid or blink consistently. Use a level to ensure they are aligned horizontally. Most sensors have adjustment screws or brackets that allow for fine-tuning their positions. Consult the manufacturer’s instructions for your specific sensor model to understand the adjustment mechanism.
  6. Check the wiring connections: Inspect the wiring connections of the sensors to ensure they are securely attached. Loose or damaged wires can cause issues with the sensor’s functionality. Examine the wiring from the sensors to the garage door opener motor. If you notice any loose or damaged wires, consider repairing or replacing them. Remember to turn off the power to the garage door opener before working on any electrical connections.
  7. Test the sensors again: After adjusting and checking the wiring connections, perform another test to ensure the sensors are working correctly. Close the garage door and wave your hand or an object in front of one of the sensors to interrupt the beam. The door should stop or reverse its movement immediately. If it doesn’t, further troubleshooting or professional assistance may be necessary.
  8. Regular maintenance: It’s important to regularly maintain your garage door sensors. Keep the sensor lenses clean and free from dirt or debris. Ensure that the sensor alignment remains intact and that the indicator lights are functioning properly. Regularly test the sensors to ensure they are working as intended.

By following these steps from Liberty Garage Door, you can effectively test your garage door sensor and ensure its proper functionality. Remember, garage door sensors are vital for safety, so it’s essential to keep them well-maintained and address any issues promptly.

Team Taylor Garage Doors

1520 N Church Rd Suite F, Liberty, MO 64068, United States

816-239-3936