Close the garage door with the opener and watch it closely as it closes.
Garage door closes all the way then reopens.
If it closes before that distance has been traveled it thinks something is wrong and it reopens to help prevent any damage or safety risk.
Outside of those things you may need to have a technician come and check the unit s out.
This will disconnect the garage door opener from the door.
If there is a force adjustment out of range that could potentially cause this issue.
This is almost always the result of a dirty or obstructed safety feature.
Close the door with either the door control or the remote control.
Pull the emergency release handle down and back towards the garage door opener.
I can t work my way past where you said you pull the door and it closes all the way.
It goes partway down reverses direction and goes back up again.
Your garage door is programmed to travel a certain distance before it closes.
If the door starts to close then opens again and the light begins to flash the infrared safety sensors are out of adjustment or defective.
If the garage door does not close completely or begins to close and then opens back up again the down limit switch needs.
But changes in weather conditions can causes your garage door components to shift or contract.
If it closes only partway the safety sensors are usually responsible clean the lenses or realign them and make sure there are no obstacles blocking the beam.
If your garage door won t open or close the problem could be a bent track a broken torsion spring or a bad capacitor int he motor housing.