It goes partway down reverses direction and goes back up again.
Garage door contact reverse.
This is almost always the result of a dirty or obstructed safety feature.
Press the control button to close the door.
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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.
When the controls on the opener are adjusted the reversing mechanism will work properly.
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Re test the auto reverse function and repeat this process until your opener is properly adjusted.
You push the button to close the garage door.
To increase the amount of force turn it clockwise.
Adjust the reverse control until the door begins to reverse as soon as it comes into contact.
However many modern day openers are not adjusted properly and thus many garage doors do not stop when an object is in their way.
It should reverse immediately upon striking the obstruction.
Garage doors manufactured after 1991 are equipped with the auto reverse mechanism.