If your garage door hits it bounces up and starts to open again your garage door is working well.
Garage door goes up but not down.
It could also be caused by a buildup of debris on the tracks that prevents the rollers from moving forward.
It goes partway down reverses direction and goes back up again.
If you find that your garage door closes part way and then goes back up this can be triggered by objects on the ground blocking their path such as garbage cans or toys.
Safety sensors if the door goes up but you can t make it go down you probably need to adjust the sensors.
To fix this issue increase the down limit one quarter turn.
You push the button to close the garage door.
There is one on each side of the door.
However if your garage door doesn t bounce back up then you know you have a problem.
They both have lights and both lights should be.
This is almost always the result of a dirty or obstructed safety feature.