The most common cause of problems with auto reverse however is the set of infrared sensors.
Garage door opener stuck in reverse.
If the garage door only travels down an inch or so before reversing something is probably blocking the beam between the two safety sensors at the bottom of the rails or the sensors aren t aligned.
If the threshold is clear the issue could be any number of things in addition to the problems listed above.
Do not use wd 40.
Check out this handy rundown from liftmaster.
Check the bottom of the door.
If it still reverses raise the door halfway and stop it.
Replace them if they re broken.
Check the cross beam receivers at the door bottom.
Poor lubrication is a very common and easy to fix explanation for why you might find your garage door stuck.
The lights should be steady and not blinking at all.
If there s anything that s blocking the threshold even slightly your garage door will sense the blockage and reverse the direction to prevent damage or threats to safety.
If there s anything stuck to the bottom of the door such as a leaf a small piece of paper or any type of.
The most common issue is that the sensors become misaligned usually as a result of being bumped into.
You should properly lubricate your garage door s track the opener chain and the springs every few months as part of regular preventative maintenance.
If they are misaligned they don t send a signal to the power head and the door will automatically reverse or not go down at all.