Garage door openers are installed with sensors to enhance the security of any given house. This has been the case since 1993, where all garage doors that were being sold in the United States had to be installed with safety eyes or the standard 2 part optical sensors. The modern garage doors employ the following two systems in creating a functional and safe garage: garage door wired to the house and are remotely powered system. This utility proves to be very efficient and safe for most home owners.
The safety eyes function as electronic detectors. They are able to detect if someone or something is under the door. Sensors are electronic devices that enhance the safety of a garage, by preventing the garage door from closing on people, pets or objects that are in the doorway. The sensors are usually placed above the floor at each opening side of the garage door. One side you will find the sensor transmitter usually known as the sender and the other side you will find the sensor receiver. The sensors generate a low voltage beam that will complete the electrical circuit when the door is opened.
If your door operates fine at night but won’t close during the day it is most likely a sensor issue. Garage doors work on infra-red light. Rays from the sun contains infra-red, when the sensors get old, the sun light will interfere with the functionality of the sensors. Thinking the door is obstructed, the opener will performan “emergency reverse”. In some openers, a clicking noise will sound from the open faulty garage door, sensors will make the garage remote or wall button to not function properly, hence the garage door failing to operate as expected. In some cases you will find the garage door will only be able to move an inch in the closing direction before reversing. Another scenario is the door will travelling down towards the closing position and then reverse anywhere along the way.
The best solution for this problem will be to change the safety sensors. This should resolve the problem and your garage door will go back to working as normal.