Every garage door opener has an emergency release that disconnects the door from the opener.
Garage door opener locked up.
Find a manual for trouble shooting.
Unplug the garage door opener.
Check to see if anything a shovel broom etc fell and is now stuck in the track that is causing it to be lodged.
Locate the force adjustment dials.
Slip a c clamp through the track.
I have used it several times.
Lodged garage door track.
These things can leave you at the mercy of a lo.
They can be found at the back panel of your craftsman garage door opener to increase the open force turn the open force dial about 1 4 of a full turn similarly to increase the close force turn the close force about 1 4 of a full turn operate your garage door.
Use a zip tie to secure the garage door in place.
T his is a pretty uncommon problem but one that can happen after you ve first installed your garage door opener.
By pushing the door inward to create a gap at the top a crook can insert a wire hook and fish for the release.
Without it you wouldn t be able to open the door when the opener is on the fritz.
To open it up all you need to do is thread a coat hanger or hooked piece of wire through the top of the door and open the emergency latch which can also be done by the rope many emergency latches.
Here is a link that might be useful.
You can activate this feature by holding down the button on your keypad for several seconds.
Some use a wedge to hold the gap open.
If your garage door opener is locked check the wall control it may be set to vacation mode.
It s important to get this switch at just the right distance from the motor so that the door is able to close all the way but the motor also knows to stop running.
This can be a quick fix by identifying the object and then removing it.
Remove the release lever cord.
Use a padlock to lock the track.
Keep the remote in the house.
Ever forget your keys to the house or even lost your garage door remote.
Disable the release lever.
Your jammed garage door can be caused by something as simple as an obstruction in the track.
Try making small adjustments.
With some garage openers a feature exists that allows you to put the opener in lock mode.
It means you will have to find the model number but it helps.
Lock the release lever.
The only thing i can think is that maybe the sensor has gone bad but they can be a pain to trouble shoot without one of their specialists.
Garage door locked from the outside.
How to lock your garage door.
This video will show you how for most garage door openers including liftmaster chamberlain sears.