You need to check the release handle and make sure that it is on the track.
Reconnect garage door after emergency release.
Some units will actually reconnect themselves but this is not typically the case.
An emergency release cord on the garage door arm opens the trolley to allow you to disengage the garage door from the opener.
To achieve the connected position pull the emergency release cord down and toward the door away from the motor.
Pull the end through until the handle is.
The first thing to do is hit the door button.
With either method you should hear a loud click when the door is reconnected.
When the spring lever is in the connected position the position required to re engage the garage door opener carriage the spring lever is compressed.
3 feed the other end of the cord through the emergency release lever on the door opener.
Tie a single overhand knot in the cord about an inch from the end.
Re connect the trolley to the opener carriage.
The next step is to go to the inside of the garage door.
From here you can manually move the garage door along the rail to meet with the carrier or use your garage door opener and it will connect automatically.
Once the power is restored to the garage door opener you must.