Requiring garage door operators to be equipped with a secondary reversing system which most operators have in the form of photo eyes.
Trouble with garage door binding and reversing.
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.
If you garage door is lowering then reversing back to the open position there could be something obstructing the sensors.
You push the button to close the garage door.
The garage door opener has several safety sensors photo eyes in place to prevent damage or injury should something obstruct the door as it is closing.
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.
It goes partway down reverses direction and goes back up again.
A garage door that keeps reversing when you attempt to close it with the opener might have a simple problem or a major issue that requires a service professional.
This is almost always the result of a dirty or obstructed safety feature.
Check to be sure these two sensors on either side of your garage door.
Two possible problems can lead to a garage door reversing before it even touches the floor.