If you are unable to lift the door manually due to extreme weight its possible you have a broken spring.
How to open overhead garage door manually.
Torsion spring systems use spring s that are mounted to a spring bar torsion tube that is mounted to the header above the garage door opening.
After you make sure that the garage door is closed completely find the overhead door opener trolley and locate the emergency cord.
Many electronic garage doors come with a bypass switch allowing you to override the system and manually lift it open when needed.
Step 2 will allow you to freely move the garage door to open and closed positions.
This will reengage the door to the opener system and now the only way to open and close your garage door would be with the power of your opener unit.
Manually move the garage door and return to down position.
This emergency release cord will be attached to the trolley in the center of the garage door.
This disengages the electric drive from the door and you can manually open and close it.
Typically you have to pull the cord straight down or slightly away from the door to disengage the opener.
Here are the steps to open a garage door manually.
To reattach your garage door to opener system you ll pull the emergency release cord down and towards the opener.
Once you ve found the emergency cord which should include a red handle pull it down to disconnect the door from the door opener.
If the garage door is open when power is lost ensure there is nothing in the way of the garage door path.
Holding the handle at the end of the cord pull until the release lever locks.
Pulling the cord detaches the garage door from the opener and allows it to open manually.
Typically in residential garage doors if your door is difficult to open manually it is caused by a broken or failing spring s.
If you experience a lose of power while your door is in the up position please call your local overhead door company.
Now the door is free to be moved manually.
Locate and pull the cord.
The emergency release cord disconnects the trolley from the carriage so that the door operates manually.
Diagram of garage door engaged and disengaged to screw drive opener system.
To manually open most garage doors you simply pull a corded handle that is attached to the door.