If the green light is flashing or is not illuminated, there's a problem with your sensor. You can test your garage door sensors by placing a cardboard box that's over 6 inches tall in the way of the sensors. If the door closes fully on the box, your sensors are not working and this issue must be addressed immediately.
If your garage door isn't opening or closing properly, it's time for a replacement. This could be due to several issues, such as broken springs or tracks that are bent or out of alignment. Regardless of the exact issue, if your door isn't functioning properly, it's not doing its job. Jul 12, 2022
A garage door that stops and goes back up is usually due to malfunctioning infrared sensors. If there is such an issue, you can see one of the sensor lights blinking. Malfunctioning sensors can be caused by a blockage, dirty eyes, loose wires, or just bad sensors in general.