To test for this use the manual release handle rope hanging from garage door opener track to release the garage door from the opener.
Garage door closed position does not stay closed.
Now press the remote control.
To reconnect the garage door to your liftmaster garage door opener manually close the garage door pull the emergency release handle down.
Depending on the brand.
Liftmaster provides a helpful resource that explains how to adjust a limit switch.
When a garage door won t stay closed the most likely problem is that the limit settings are off.
A broken garage door is frustrating.
Try opening the garage door with the remote and see what happens.
This will cause the trolley to move into position and reconnect to the garage door.
When you re too far away then the door may not respond.
Turn the power back on and the door should open and close normally.
Try replacing the batteries in the remote and trying again.
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.
In the case that the door responds to the switch then there s a good chance it s the remote that has an issue.
You will find that the door will only move an inch or so in the close direction and reverse.
Use a screwdriver to tighten the wire.
Shut off the power to the garage door opener.
If that isn t the problem then try opening and closing the door with the wall switch.
View liftmaster resources on this topic your logic board needs replaced.
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.
Check the door s electric eye.
While the issue could require an expert there are a few troubleshooting steps you can take before scheduling garage door repairs.
Troubleshooting your garage door.
The transmitters remotes will not work to close the garage door.
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.
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.
First check the sensor lights.
Your garage door may be binding i e not rolling smoothly along the garage door tracks.