When your liftmaster garage door opener opens and closes by itself here are the troubleshooting tips you need to follow.
Garage door closes part way then opens again.
Your garage door s logic board is the brain of your garage door opener.
When this happens your garage door will only close by holding down on the wall button until the door fully closes.
They can only open it.
I can t work my way past where you said you pull the door and it closes all the way.
If the garage door does not close completely or begins to close and then opens back up again the down limit switch needs.
The remotes will not work to close the garage door.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
If the door reverses part way down and you are sure there is no obstruction or binding increase the closing force a small amount and try it again.
Disconnect the control station.
This brain can wear out in time so you could need a replacement.
Remove the bell wire from the single button control station s terminals and operate the garage door opener from the remotes.
Verify that the mounting brackets for the sensors are secured tight and the sensors are not vibrating while the door is closing.
Close the garage door with the opener and watch it closely as it closes.
If there is a force adjustment out of range that could potentially cause this issue.
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.
If your garage door won t open or close the problem could be a bent track a broken torsion spring or a bad capacitor int he motor housing.
You push the button to close the garage door.
Some older garage door openers do not have nicely labeled adjustment screws for force and travel limits.
This is almost always the result of a dirty or obstructed safety feature.
Outside of those things you may need to have a technician come and check the unit s out.
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.
