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.
Garage door closes and reopens immediately.
Your garage door is programmed to travel a certain distance before it closes.
You push the button to close the garage door.
The solution is usually one or more of the following.
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.
Close the garage door with the opener and watch it closely as it closes.
There may also be loose wire connections inside the button housing itself.
The symptom of this is a garage door that is in constant motion opening fully then immediately descending only to start the same cycle again.
They are misaligned this is the most likely problem and the most common issue with garage door openers.
As these wires short against the housing the electrical impulse causes the door opener to activate.
If the door closes while holding the button pressed you are likely having one of the following issues with your safety sensors.
But changes in weather conditions can causes your garage door components to shift or contract.
It goes partway down reverses direction and goes back up again.
This is almost always the result of a dirty or obstructed safety feature.
The sensors are dirty wipe lenses with a clean soft cloth.
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.