There are mainly two reasons for this occurrence and one of the reasons is depicted in this blog.
Garage door opener motor hums but door does not open.
This is frustrating especially if you re trying to get your car out of the garage.
Sometimes when a garage door won t open or close it does not actually mean there is anything wrong with the door your remote or even one of the opener assembly parts.
When you find that your garage door motor is making a humming noise but not opening and closing it typically means that it has gone off track or needs some sort of small adjustment.
Automatic garage door opener runs but door doesn t move sometimes homeowners will find that their automatic garage door opener runs but the door doesn t move.
They can hear the motor going but the door itself is not opening.
Press the remote or the wall mounted start switch listen to the motor and watch the movement of the chain.
You activate the door opener by either a remote control hand held unit or by pressing the wall button mounted on the wall and hear the motor humming but the garage door does not move.