These garage doors have sensors near the ground to ensure nothing gets stuck underneath the door when it closes.
Garage door closes and reopens.
It goes partway down reverses direction and goes back up again.
If the garage door does not close completely or begins to close and then opens back up again the down limit switch needs.
An exposed spot or a short circuit in the small gauge wire that leads from the garage.
When that happens the distance your garage door needs to travel may change.
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.
Garage doors have many parts that all work together including safety features.
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.
What to do when your garage door opens and closes by itself check with your neighbors.
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.
If the door goes up seemingly on its own after you close the door be sure to check for any debris the sensor is picking up.
This is almost always the result of a dirty or obstructed safety feature.
Clean the button as well as the connections in the housing if this is the case.
This will cause the door to open and close until the button becomes unstuck.
But changes in weather conditions can causes your garage door components to shift or contract.
In rare instances a nearby neighbor may have a garage door opener set to the same wireless.
Inspect the control wiring.
To troubleshoot the garage door opener button make sure it s clean and free of debris.
If you re craftsman chamberlain etc garage door opener is closing and then opening up its likely a common problem related to the stop limit mechanism.