But changes in weather conditions can causes your garage door components to shift or contract.
Garage door reopens when closing.
They are usually on the motor housing and you access them by opening a panel or removing the housing cover.
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.
By wade shaddy updated december 19 2018 you push the button to close the garage door.
Garage doors have many parts that all work together including safety features.
Most garage door openers have an open and close limit control.
Your garage door is programmed to travel a certain distance before it closes.
There may also be loose wire connections inside the button housing itself.
In garage door operators made after 1993 there are required safety features that open the door during the close cycle when they detect something blocking the door.
If the door stops short of closing lengthen the close limit by turning the control knob in the direction indicated usually counterclockwise.
These garage doors have sensors near the ground to ensure nothing gets stuck underneath the door when it closes.
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.
Close the garage door with the opener and watch it closely as it closes.
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.
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.
It goes partway down reverses direction and goes back up again.
Scan the safety sensors.
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.
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.