There may also be loose wire connections inside the button housing itself.
Garage door malfunction closing.
In your efforts to get your home safely sealed up again.
This precaution ensures that the door doesn t close when your car is in the doorway.
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.
Keeping the garage door closed is important to home security so life can become pretty stressful when that door can t seem to stay shut.
This is almost always the result of a dirty or obstructed safety feature.
In general garage door sensors block the door from closing if there is an object nearby.
Your garage door has set limit switches that instruct the motor when to stop running both when it is opening and when it is closing.
It goes partway down reverses direction and goes back up again.
The close limit switch may need adjusting.
If the garage door opens correctly but fails to close completely there may be one of three common causes.
Garage door won t close all the way.
As these wires short against the housing the electrical impulse causes the door opener to activate.
If you have a problem with your wall switch being unable to open or close the garage door then it s often a problem somewhere in the power supply.