Use a screwdriver to tighten the wire.
Garage door closed position does not stay closed.
This will cause the trolley to move into position and reconnect to the garage door.
The problem is either due to a blocked path between the sensors dirty eyes loose wires at the sensors or at the motor head or just bad sensors.
Depending on the brand.
If your garage door isn t staying open or staying closed you may need to adjust your limit switch which requires only a flathead screwdriver.
You will find that the door will only move an inch or so in the close direction and reverse.
While the issue could require an expert there are a few troubleshooting steps you can take before scheduling garage door repairs.
To reconnect the garage door to your liftmaster garage door opener manually close the garage door pull the emergency release handle down.
In the case that the door responds to the switch then there s a good chance it s the remote that has an issue.
Clutter or obstructions that block the sensor are the first problems to look for if your door won t close or in extreme cases open at all.
If that isn t the problem then try opening and closing the door with the wall switch.
Now press the remote control.
Shut off the power to the garage door opener.
A broken garage door is frustrating.
Your garage door may be binding i e not rolling smoothly along the garage door tracks.
Troubleshooting your garage door.
Liftmaster provides a helpful resource that explains how to adjust a limit switch.
Try opening the garage door with the remote and see what happens.
Turn the power back on and the door should open and close normally.
Check the door s electric eye.
There can be a few reasons as to why your garage door won t stay closed and by doing some snooping and checking a few parts of the garage door system you ll be able to see what s really going on.
If the limits aren t programmed quite right your garage door may think that it has distance left to travel before the door is fully closed even though it s reached the closed position.
Adjusting the limit travel setting the most common reason as to why a garage door won t stay closed is that the limit settings are off.
View liftmaster resources on this topic your logic board needs replaced.
Try replacing the batteries in the remote and trying again.
The transmitters remotes will not work to close the garage door.
To test for this use the manual release handle rope hanging from garage door opener track to release the garage door from the opener.
The safety sensors we mentioned above then register the floor as an obstruction in the door s path and tell the door to go back up again.