Scan the safety sensors.
Garage door reopens when closing.
Your garage door is programmed to travel a certain distance before it closes.
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.
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 usually on the motor housing and you access them by opening a panel or removing the housing cover.
This is almost always the result of a dirty.
Close the garage door with the opener and watch it closely as it closes.
But changes in weather conditions can causes your garage door components to shift or contract.
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.
If the garage door does not close completely or begins to close and then opens back up again the down limit switch needs.
Check the track and tension spring.
There may also be loose wire connections inside the button housing itself.
Even a very small item can set off a sensor so give the area a thorough comb over and make sure there s absolutely nothing out of place.
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.
These garage doors have sensors near the ground to ensure nothing gets stuck underneath the door when it closes.
Garage doors have many parts that all work together including safety features.
Garage doors have sensors that keep them from closing on top of an object so you ll need to check to make sure there isn t something blocking the way.
This is done with the help of sensors in the motor and on each side of the opening near the floor and mounted on the tracks.
Most garage door openers have an open and close limit control.
