If that point is more than four feet or less than three feet above the ground you will need to balance the door.
Garage door bouncing up.
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This is almost always the result of a dirty or obstructed safety feature.
Sometimes the sensors will be in alignment and just as the door gets close to being shut it will vibrate enough to push one sensor off.
If these can t see each other when the door is almost shut it will send a signal to the garage door motor to open back up.
It goes partway down reverses direction and goes back up again.
A careless or rushed parking job can cause the car s bumper to block the sensor.
Your garage door sensor works by having two photo sensitive devices on either side of the garage door.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
This is related to the up limit switch.
Then lower the door about halfway.
To know how to balance a garage door first disengage the opener from the door by pulling the opener release handle see opening photo.
Try making small adjustments.
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Your garage door s logic board is the brain of your garage door opener.
T his is a pretty uncommon problem but one that can happen after you ve first installed your garage door opener.
2 brace the open door.
You push the button to close the garage door.
Move the garage door up and down until you find a place where the door stays suspended when you let go.
If the door rides back up the springs are under too much tension.
Get logic board replacement.