Two possible problems can lead to a garage door reversing before it even touches the floor.
Electric garage door opener problems.
Replace the main gear drive if the garage door opener makes a grinding noise but the door doesn t move your main drive gear is probably toast.
Your garage door opener stopped operating as it should.
If you garage door is lowering then reversing back to the open position there could.
It can be quite easy to find the solutions needed to repair your garage opener.
Garage door opener won t open all the way fix.
In my article about garage door opener troubleshooting i help you to correct the most common problems without having to consult either your owner s manual or an expensive professional.
Garage door openers have an adjustment screw that controls the closing force the pressure with which a door is allowed to descend before the motor switches off when the door reverses before it even hits the floor this is often because the close force.
If your garage door opener fails to open the garage regardless of whether you use your remote or the interior button then there s a problem with the opener itself.
If your garage door doesn t open but the opener motor runs for just a few seconds and then shuts off the garage door itself may have manually been locked.
First make sure that the garage door opener is plugged in properly and that its electrical outlet is functioning properly.
The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor.