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.
Garage door opener stuck in reverse.
You should properly lubricate your garage door s track the opener chain and the springs every few months as part of regular preventative maintenance.
Check out this handy rundown from liftmaster.
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.
Check the cross beam receivers at the door bottom.
The most common issue is that the sensors become misaligned usually as a result of being bumped into.
Check the bottom of the door.
The most common cause of problems with auto reverse however is the set of infrared sensors.
Poor lubrication is a very common and easy to fix explanation for why you might find your garage door stuck.
Replace them if they re broken.
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 it still reverses raise the door halfway and stop it.
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 lights should be steady and not blinking at all.
For some garage door openers fixing the auto reverse mechanism can be as easy as tightening some screws with a screwdriver.
Be sure to use clopay s garage door prolube or sillicone based lubricants.