How To Test Garage Door Sensors

A lack of power supply is one of the most common causes of a malfunctioning garage door sensor.

How to test garage door sensors. This precaution ensures that the door doesn t close when your car is in the doorway. If the lights are off in one or both sensors however it points to an issue with the power supply. Follow these simple steps to test your garage door s automatic safety reverse sensors. The door should automatically reverse when it makes contact with or senses the object in its path.

Test the sensors ensure that the door is open and activate the opener. If the garage door closes it indicates that the sensors are not functioning. Take a clean cloth and very gently wipe them in case they have accumulated dust or residue of some sort. Obtain a few cardboard boxes that are higher than the height of your.

How to check if garage door sensors are working 1. Activate the garage door opener to close the door on the object. If the lights are turned on for both sensors then you can rule out a problem with the power supply. Place the box in the garage doorway making sure the box is in front of the garage door sensors.

Modern day garage door safety sensors are usually led and if the sensors are aligned correctly with the two beams connecting they should light up green. The same mechanism kicks in when other objects are placed near the door too. Sensor path make sure nothing is obstructing the sensor beam. If something goes wrong with the sending eye the receiving eye will shut off also.

In general garage door sensors block the door from closing if there is an object nearby. Place an object such as a brick on the ground directly in the path of the door. Here s a quick way to test the receiving eye to see if there is a problem. Do not handle them more than necessary or you might well put them out of alignment.