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.
Garage door auto reverse.
This is a safety feature that has been added to garage door openers to help prevent the door from closing on a car pet or even a child.
When the door contacts the wood it should automatically reverse and return to the open position.
On the garage door motor there will be two knobs or dials to adjust the opener and the reverse sensor.
Home inspectors aim to protect their inspection clients and their clients families from potential perils by testing this safety feature.
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.
This is almost always the result of a dirty or obstructed safety feature.
You ve probably seen the mechanism in action but haven t given it much thought.
If the door does not reverse it needs attention immediately.
Adjust the garage door opener mechanism.
To increase the amount of force turn it clockwise.
Refer to the owner s manual to determine which is.
You can also call it the contact reversal test pressure test and performance test.
Eventual outcome of garage door reversing mechanism failure.
The auto reverse test evaluates the pressure activated auto reverse function of a garage door.
It goes partway down reverses direction and goes back up again.
A garage door auto reverse is pretty much what it sounds like a system which forces the door to quickly reverse if it encounters an obstacle like your car your cat your chihauhua or your child.
Another method of testing the auto reverse is to set a 1 1 2 thick piece of wood on the floor in the center of the door s path.
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.