With some garage openers a feature exists that allows you to put the opener in lock mode.
Garage door opener locked up.
This video will show you how for most garage door openers including liftmaster chamberlain sears.
Remove the release lever cord.
T his is a pretty uncommon problem but one that can happen after you ve first installed your garage door opener.
Use a padlock to lock the garage door from the inside.
Once locked a normal press of the button will not activate the door.
Every garage door opener has an emergency release that disconnects the door from the opener.
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.
These things can leave you at the mercy of a lo.
Find a manual for trouble shooting.
Locate the force adjustment dials.
By pushing the door inward to create a gap at the top a crook can insert a wire hook and fish for the release.
Use a zip tie to secure the garage door in place.
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.
How to lock your garage door.
Lodged garage door track.
Try making small adjustments.
Unplug the garage door opener.
Here is a link that might be useful.
Some use a wedge to hold the gap open.
This is related to the up limit switch.
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.
You can activate this feature by holding down the button on your keypad for several seconds.
Your jammed garage door can be caused by something as simple as an obstruction in the track.
If your garage door opener is locked check the wall control it may be set to vacation mode.
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.
Without it you wouldn t be able to open the door when the opener is on the fritz.
Ever forget your keys to the house or even lost your garage door remote.
Keep the remote in the house.
Lock the release lever.
Disable the release lever.
Slip a c clamp through the track.
Check to see if anything a shovel broom etc fell and is now stuck in the track that is causing it to be lodged.
Use a padlock to lock the track.
I have used it several times.