If the door simply stops short of the floor the likely culprit is the down limit switch.
Setting garage door to manually opening.
It should click in place.
Keep your owner s manual on hand.
This emergency release cord will be attached to the trolley in the center of the garage door.
To locate the bypass switch look for a red rope hanging down from your garage mechanisms.
Many electronic garage doors come with a bypass switch allowing you to override the system and manually lift it open when needed.
Have a helper steady the ladder.
This disengages the electric drive from the door and you can manually open and close it.
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.
To manually open most garage doors you simply pull a corded handle that is attached to the door.
Keep the rollers and chain lubricated on your garage door.
To reset it begin by pulling the cord in the opposite direction.
Place a stepladder beneath the box portion of the garage door opener.
Consult it first before tinkering with your door.