On the chance that it still doesn t the problem could be the wiring.
Garage door opener eye alignment wiring.
To all align simply adjust eh both eye until both leds on solid and not flashing or off.
Press the wiring against the garage s wall and secure with insulating staples.
Open the door to the highest point of travel.
The units are placed near the ground on either side of the garage door.
Do both garage sensors need to be green.
To test the alignment tie a length of string between the two sensors.
If you follow.
Use a spirit level to see if the string is level.
Installation procedures may vary according to door type.
While inside your garage close the door and mark the vertical centerline of the garage door.
The eye send out a 1 to 2 wide been depending on the width of the door.
If the sensor doesn t receive the beam emitted by its opposite number the door won t close.
Chamberlain garage door opener how to figure out which wires go where.
Garage door sensors protect your family possessions and pets by not allowing the heavy garage door to close if there is anything in the glide path.
If the beam of light is interrupted while the garage door is closing the door will stop and rise back up.
Sometimes you get a mess of wires and you don t know what wires go where.
Then you can untie the string and test the door.
Garage door sensors utilize a photo eye sensor and a beam of infrared light that goes between the two units.
If it isn t then you know that the sensors need to be adjusted.
Loosen one sensor and move it until the string is level.
The photo eye of an automatic opening garage door is a safety feature.
They do this by using an electric eye sensor that crosses the doorway.
Mark a line on the header wall 2 5cm above the highest point of travel.
Now that you have made sure there are no obstructions and that both sensors are aligned properly your garage door opener should work.
Start by inspecting the wires that are going into both of the sensors.
How to align garage door sensors.
Extend the line onto the header wall above the door spring.