Usually this is a sure sign that there is an issue with the garage door s photo eye system.
Garage door opener starts then reverses direction.
If an object person or animal blocks the beam the closing door reverses direction.
When the opener is activated the screw rotates causing the nut to move until it reaches the switch.
There may be two nuts on one track.
Test the sensor eyes by connecting them to short wires directly at the motor unit.
One for the opening limit and one for the closing limit.
In 1993 a law was passed in the u s.
If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch.
When the opener reverses the screw turns the opposite way and the nut travels back.
It goes partway down reverses direction and goes back up again.
Replace the garage door opener safety sensor the safety sensor has a pair photoelectric eyes at the base of the rails one eye emits an infrared beam and the other receives it.
Requiring garage door operators to be equipped with a secondary reversing system which most operators have in the form of photo eyes.
By wade shaddy updated december 19 2018 you push the button to close the garage door.
This happens from both the read more.
In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor.
This is almost always the result of a dirty.