Here is a link that might be useful.
Garage door opener locked out.
Garage door locked from the outside.
In my article about garage door opener troubleshooting i help you to correct the most common problems without having to consult either your owner s manual or an expensive professional.
I have used it several times.
These things can leave you at the mercy of a lo.
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.
A length of cord will be attached to the back of the lock.
If this doesn t solve the problem then unplug your craftsman garage door opener and wait for about 30 minutes to retry.
Use a padlock to lock the garage door from the inside use a padlock to lock the track slip a c clamp through the track unplug the garage door opener use a zip tie to secure the garage door in place keep the remote in the house lock the release lever disable the release.
Ever forget your keys to the house or even lost your garage door remote.
Some models include a lock cylinder on the garagedoor.
Check for binding or obstruction such as a broken spring or a door lock.
It means you will have to find the model number but it helps.
To troubleshoot this disconnect the garage door opener from the door by pulling the emergency cord and manually lift the garage door.
If your garage door opener is locked check the wall control it may be set to vacation mode.
It s actually very simple to reset the code on the garage door clicker when you don t have the existing code.
How to lock your garage door.
Pulling the cord releases the door from the opener and allows it to be opened manually.
If yours doesn t you can drill a hole.
Typically it is in the top panel.
It can be quite easy to find the solutions needed to repair your garage opener.
On some garage door openers you can use a plastic cable tie or some thin wire to tie the level to the carriage assembly it is attached to.
Lock the release lever.
Find a manual for trouble shooting.
A neighbor s garage door opener is probably on the same frequency and when they hit their remote it s opening your door.
Insert the key hopefully you have it and the lock should come out when turned.
Talk to your neighbors to see what s causing this.
This video will show you how for most garage door openers including liftmaster chamberlain sears.