One Garage Door Sensor Is Yellow

If one of your garage door sensors is yellow, it means that the sensor is not aligned properly. This can happen if the sensor has been bumped or moved, or if the garage door has been recently serviced. When the sensors are not aligned, the garage door will not be able to close all the way, and it may even open back up again after it has been closed.

To fix the problem, you will need to realign the sensors. First, locate the two sensors. They are usually mounted on the wall or ceiling, one on each side of the garage door. Once you have found the sensors, check to make sure that they are both level. If one of the sensors is not level, use a screwdriver to adjust it until it is.

Next, check to make sure that the sensors are facing each other. The sensors should be aligned so that the beams of light from the sensors cross each other in the middle of the garage door opening. If the sensors are not facing each other, use a screwdriver to adjust them until they are.

Once the sensors are aligned, test the garage door to make sure that it is working properly. The garage door should now close all the way and stay closed.

If you have followed these steps and the garage door is still not working properly, there may be another problem. You may need to replace the sensors or the garage door opener. To do this, you will need to contact a qualified technician.

Here are some additional tips for troubleshooting a garage door sensor that is yellow:

Make sure that the sensors are clean. Dirt and debris can block the beams of light from the sensors, which can cause the sensors to malfunction.
Check the wiring to the sensors. The wires may be loose or damaged, which can also cause the sensors to malfunction.
If you have recently had your garage door serviced, the technician may have accidentally knocked the sensors out of alignment. Check the alignment of the sensors and adjust them if necessary.

If you have tried all of these troubleshooting tips and the garage door is still not working properly, you may need to replace the sensors or the garage door opener. To do this, you will need to contact a qualified technician.