Get a ladder and unplug the power cord from the ceiling outlet.
Garage door opener stuck in up position.
Turn the power back on and the door should open and close normally.
This should stop it sooner.
You can fine tune after by adjusting the up travel slightly up or down.
First slack the chain where the chain and cable meet.
All rollers should be inside the door track.
Your jammed garage door can be caused by something as simple as an obstruction in the track.
Check the door s electric eye.
Look at the door springs before disconnecting the door from the door opener.
If your garage door gets stuck when opening this may be why.
Garage door is off the track in some circumstances it is possible for the rollers that move the garage door up and down to jump the track.
This can be a quick fix by identifying the object and then removing it.
Then you must drive the stop bolt out.
If the springs are broken you will.
Then keep the chain in the same position and tighten the slack out.
Check to see if anything a shovel broom etc fell and is now stuck in the track that is causing it to be lodged.
If the rollers are out of the track contact a clopay master or authorized dealer to professionally and safely get your door back on track.
If they are not.
Shut off the power to the garage door opener.
Look at the door rollers on each side of the door.