Disconnect the control station.
Garage door closes and immediately opens.
If the door closes while holding the button pressed you are likely having one of the following issues with your safety sensors.
Below are three reasons why your garage door opens on its own and some quick fixes you can try.
This is almost always the result of a dirty or obstructed safety feature.
When your liftmaster garage door opener opens and closes by itself here are the troubleshooting tips you need to follow.
If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch.
They are misaligned this is the most likely problem and the most common issue with garage door openers.
Open the garage door and watch it closely as it opens.
The sensors are dirty wipe lenses with a clean soft cloth.
In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor.
Your travel down setting needs to be adjusted.
There may also be loose wire connections inside the button housing itself.
Close the garage door with the opener and watch it closely as it closes.
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.
Garage doors use radio frequencies to open and close.
When the garage door opens about halfway or 5 feet from the ground and stops the up limit switch needs to be adjusted.
The solution is usually one or more of the following.
The measurement is used to reset the up limit switch on your garage door opener.
Here s a rundown of some of the possible reasons this can be happening.
The problem is either due to a blocked path between the sensors dirty eyes loose wires at the sensors or at the motor head or just bad sensors.
As is the case with so many issues at the home there s no one reason why your garage door closes then opens.
You will find that the door will only move an inch or so in the close direction and reverse.
As these wires short against the housing the electrical impulse causes the door opener to activate.
You push the button to close the garage door.
When the garage door opens about halfway or 5 feet from the ground and stops the up limit switch needs to be adjusted.
It goes partway down reverses direction and goes back up again.
Measure the height where the door stops while it is being opened.
The transmitters remotes will not work to close the garage door.