Disconnect the garage door opener from the door and go through the troubleshooting routine on the garage door repair page.
Garage door opener stops and goes problems.
It goes partway down reverses direction and goes back up again.
In a typical situation the motor for your garage door opener should stop running once the door has closed.
Quite often the cause of your door s malfunction is an improperly set garage door limit.
Remember that sometimes a garage door opener can increase the binding in a.
Garage door only travels a little way and then reverses does your garage door only travel a little way 6 inches or so and then reverse.
But when the door begins to descend all on its own the problem may point to the opener s logic board or the circuitry inside the motor unit itself.
When a garage door descends on command but then immediately reverses itself the problem is usually with the sensor eyes along the side tracks or with the door s wheels binding in their tracks.
A garage door that only opens halfway becomes a nuisance for many reasons.
This requires a simple turn with.
You push the button to close the garage door.
If you find that it keeps running this can present a problem in your system.
This is almost always the result of a dirty or obstructed safety feature.
Typically partial opening problems call for adjustments to your liftmaster garage door opener.
As with many such problems the most common problem is the simplest one the motor unit has been unplugged.
Finally it s possible the garage door opener s motor.
It s also possible that the circuit breaker fuse or gfci outlet powering the door opener circuit has tripped or burned.
Garage door openers are designed to stop working if anything goes wrong.
While this is a great safety feature it can make some problems harder to solve.
In fact you really shouldread the entire garage door repair it will make troubleshooting later much easier.