Tiny sensors on either side and bottom of each garage door protect you and your family from harm. They can also prevent damage to your vehicle. These sensors, also called photo eyes, are mandatory safety features that, when working properly, are meant to detect any object in the path of your garage door. If anything is sensed between the photo eyes, interrupting the invisible laser beam that the two use to communicate with each other, the door won't close. It may even rise back up to the ceiling. But if your sensors are misaligned, the door may not close or open properly, even if nothing is in the garage door’s path. Misaligned, dirty, or malfunctioning sensors will prevent proper garage door operation.
The large and compressed spring is responsible for helping the door to open and close when you press the garage remote button. This is a very severe problem, one that can even put your safety at risk. Broken garage door springs are well-known for the frightening “BANG” or “SNAP” noises that often occur when they falter.
What happens when your garage door won't open at all? There are many reasons why this may happen. Power flowing to the electronic opener might be temporarily interrupted, or the tracks and springs may be blocked. The door could even be crooked on its track, and the opener can't raise it properly. Whatever may be wrong, you should contact a garage door specialist right away.