You push the button to close the garage door.
Garage door goes up but not down.
If your garage door hits it bounces up and starts to open again your garage door is working well.
This could include small items like rocks gum or mud buildup.
They both have lights and both lights should be.
To fix this issue increase the down limit one quarter turn.
This is almost always the result of a dirty or obstructed safety feature.
Turn off the sure lock aka vacation mode on the wall console check if limits are properly set check the door balance condition and door spring check opening force control or force settings.
It goes partway down reverses direction and goes back up again.
It could also be caused by a buildup of debris on the tracks that prevents the rollers from moving forward.
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.