Hold down a button on your remote garage door opener.
How to check liftmaster garage door opener.
Repeat step 2 if the garage door.
Within 30 seconds of pressing the learn button press down on a button on the remote.
Now try opening the garage door once again with the remote control.
Also check to see that they are as aligned as possible.
If you see the part number the model number is typically on the other side under the light cover.
Next clear the beams of any dust debris and or cobwebs that may have accumulated on the sensor lenses.
This will send out a radio signal to the ceiling mounted motor unit.
They are usually blue in color.
If you notice the door reverses when closing you want to check the sensors first.
Firstly make sure there are no obvious obstructions.
In the future when the unit receives that specific signal it will open the garage door it s attached to.
Whether you have a belt drive chain drive or wall mount model find helpful resources manuals videos and more to help you diagnose and fix the problem.
Locate the manual force adjustment dials at the back of the liftmaster garage door opener.