Possible reasons why your garage door hits the floor then goes back up as is the case with so many issues at the home there s no one reason why your garage door closes then opens.
Garage door keeps opening back up.
If that isn t the problem then try opening and closing the door with the wall switch.
If this is the reason your garage door is not functioning properly the lubricant must be applied.
In cold temperature the space between molecules reduces making the metal shrinks.
If it closes only partway the safety sensors are usually responsible clean the lenses or realign them and make sure there are no obstacles blocking the beam.
This will cause the door to open and close until the button becomes unstuck.
If your garage door won t open or close the problem could be a bent track a broken torsion spring or a bad capacitor int he motor housing.
An exposed spot or a short circuit in the small gauge wire that leads from the garage.
Another easy way to fix a garage door that opens by itself is by checking the remote opener.
It goes partway down reverses direction and goes back up again.
In the case that the door responds to the switch then there s a good chance it s the remote that has an issue.
To troubleshoot the garage door opener button make sure it s clean and free of debris.
Replace the wiring if needed with garage door opener wiring.
Inspect the control wiring.
Here s a rundown of some of the possible reasons this can be happening.
Check for reversed broken or cut wires.
Your travel down setting needs to be adjusted.
The button can easily get dirty and stuck in the pushed position.
Most likely this will resolve the situation.
Clean the button as well as the connections in the housing if this is the case.
You push the button to close the garage door.
This is almost always the result of a dirty or obstructed safety feature.
Try replacing the batteries in the remote and trying again.
Staples can cut insulation and short out the wires.
Check the remote opener.
Be sure to double check if there is anything underneath the door if it continues to open back up after you close it.
Your garage door sensor works by having two photo sensitive devices on either side of the garage door.
What to do when your garage door opens and closes by itself check with your neighbors.
A careless or rushed parking job can cause the car s bumper to block the sensor.
In rare instances a nearby neighbor may have a garage door opener set to the same wireless.
Another reason that your garage door won t open all the way in cold weather is probably that the metal has contracted.
For series ii wall console you can remove the wires from the back of the wall console and touch them together to see if the garage door moves.