Close the garage door with the opener and watch it closely as it closes.
Garage door closes and reopens immediately.
As these wires short against the housing the electrical impulse causes the door opener to activate.
It goes partway down reverses direction and goes back up again.
This is almost always the result of a dirty or obstructed safety feature.
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.
The sensors are dirty wipe lenses with a clean soft cloth.
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.
If the garage door does not close completely or begins to close and then opens back up again the down limit switch needs.
Your garage door is programmed to travel a certain distance before it closes.
You push the button to close the garage door.
They are misaligned this is the most likely problem and the most common issue with garage door openers.
There may also be loose wire connections inside the button housing itself.
If the door closes while holding the button pressed you are likely having one of the following issues with your safety sensors.
The solution is usually one or more of the following.
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.
But changes in weather conditions can causes your garage door components to shift or contract.