Reasons why your garage door closes then reopens when your garage door keeps opening and closing there are typically several possibilities for this malfunction.
Garage door shuts then reopens.
The solution is usually one or more of the following.
The sensors are dirty wipe lenses with a clean soft cloth.
It goes partway down reverses direction and goes back up again.
Close the garage door with the opener and watch it closely as it closes.
Your garage door is programmed to travel a certain distance before it closes.
If your garage door reverses when it hits the floor look into these three common causes and try troubleshooting the issue.
They are misaligned this is the most likely problem and the most common issue with garage door openers.
But changes in weather conditions can causes your garage door components to shift or contract.
If the garage door does not close completely or begins to close and then opens back up again the down limit switch needs.
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.
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 the door closes while holding the button pressed you are likely having one of the following issues with your safety sensors.
You push the button to close the garage door.