Re test the auto reverse function and repeat this process until your opener is properly adjusted.
How does the safety reverse work on a garage door.
If the door does not reverse it needs attention immediately.
If you re not comfortable adjusting the settings yourself contact a trained garage door technician.
The sensors are located low on each side of the garage door and the 2 beams meet performing a connection.
To decrease the amount of force required to reverse the direction of the garage door turn the knob or screw with a screwdriver counterclockwise one quarter.
The beams are easy to test simply pass your foot in between the two sensors while the door is closing and if the door goes back up you know that they are working properly.
In addition to this the us consumer product and safety commission also states.
The second line of defense is a set of infrared sensors which should be mounted 4 to 6 above the floor on each side of the garage door frame.
To increase the amount of force turn it clockwise.
When the device detects any person or object in the path of a closing garage door it signals the motor to stop the downward action and switch the motion into reverse to stop the obstacle being crushed.
When the door contacts the wood it should automatically reverse and return to the open position.