After 1993 liftmaster started using a rotating code with millions of possible programming combinations.
Garage door opened by neighbor.
This is rare but it does occasionally happen.
The signal transmitted to open your garage door travels on a specific frequency and uses a specific code to program.
Just reprogram your garage door s openers and it should be back to working order.
According to a persistent urban legend a plane passing over your home can cause your garage door to open.
It is quite easy to check just have your neighbor activate his or her garage door and see if your door begins to move.
Electric garage doors make our everyday lives easier.
In rare instances a nearby neighbor may have a garage door opener set to the same wireless code as your opener.
Richards says it s rare but in some instances a door will open and close by itself because someone else has your code or frequency.
When your neighbor uses their remote to open or close their door it may cause yours to open too.
This will cause the door to open and close until the button becomes unstuck.
The button can easily get dirty and stuck in the pushed position.
Cb radios police radios a nearby radio station or radio tower can also make a garage door open and close on its own.
By sheer chance one of your neighbors may have a remote programmed with the same code.
If this does not fix the situation then you may need to replace the garage door opener or the circuit board to get to a different frequency.
If you suspect your neighbor has an identical garage door opener frequency try changing your code or the frequency of your garage door opener.
There s a small chance a neighbor may be using the same garage door opener frequency or code.
To troubleshoot the garage door opener button make sure it s clean and free of debris.
If your neighbors garage door remote is opening your garage door the first thing to do is reset the codes using the dip switches or learn button.
Because two different garage doors can accidentally be programmed to the same channel your neighbors may be causing your garage door to open on its own.