My 45 pound, 6 year old son decided to go for a ride with the garage door, by hanging onto the manual rope. Since then, the door will open fine, but I have to hold the (wall mounted) button down (remote won't work) to get it to close. It's a Lift-Master 1/3 HP. Any ideas
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Sometimes if the clip is not reset then it wont catch the chain mechanism again to open or close the door. If you havent already reset the pull cord clip then that would be my guess. Try closing the garage door reset the clip with the rope attached, push it up til it clicks. and hit the garage door opener button. the rope and clip should move along the track until it hits the arm bracket where the garage door attaches to the chain mechanism.
If that does not do the trick then the clip has some screws on either side of the plastic casing and may need to be loosened and readjusted to match up with the garage door arm bracket and then locked back into place. That should do the trick if all esle fails, you may have to call the door company to come and correct the problem. Hope it works out!
I think what you mean is you pulled the rope to open and close the door manually and now you can't get the two halves of the trolley to reconnect. If so, pull straight down on the rope and release. Then run the door so the two halves of the trolley connect. You may have to do that last step manually. If this isn't your problem post back.
Door sensors are not working. Check if lights are on both sides.
Might be misaligned or one is bad.
Door will close if you hold in the garge close button until it's all the way down.
And it will open on it's own.
You can get these off ebay.
Check if there is a shadow being cast onto one of the sensors as the door closes. We've had the rope for manually closing the door cast a shadow in full sun and trigger the "something crossed the beam" safety reverse. (Our temporary solution was to cast a shadow that remained constant from outside the door.)
Similarly check if there are any weeds or grass that are being blown or bent into the opening as the door closes. If there are plants in or near the doorway, trim them or use an herbicide to kill them and then trim the top growth after the plant dies.