Damaged garage door tracks jamb or rollers.
Garage door has trouble opening.
So verify that the power door lock deactivates when you open the door.
Check to see if the trolley has been disconnected.
Two possible problems can lead to a garage door reversing before it even touches the floor.
The resistance can be in the form of a damaged garage door tracks door jambs or garage door.
The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor.
If you garage door is lowering then reversing back to the open position there could.
The power door lock must be deactivated anytime you open the garage door.
If that s not the case then the door won t open fully.
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 reverses before hitting the floor.
The trolley moves along the chain drive the long track attached to the ceiling when the garage door is opening or closing attached via a metal.
Garage door opener won t open all the way fix.
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.