GARAGE DOOR CLOSES TO THE FLOOR AND OPENS ALL THE

Question edited for clarity and correct spelling of maker.
Question moved form Office Equipment Category.

Limit switches if the lenses are clean an nothing within 6" of them.

The Garage Door Comes Down, Hits the Floor and Reverses

Chamberlain Group https://support.chamberlaingroup.com > article > GDO...
The most common reason the door reverses after it touches the floor is the down or close travel needs to be adjusted.

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How to Reset Garage Door Opener Limit Switches

myohd.com https://www.myohd.com > blog > reset-garage-door-o...
Jan 5, 2018 - Open and close the garage door. If the problem remains, continue adjusting the up limit switch until the door operates normally. Garage Door ...

Chamberlain Garage Door Opener Troubleshooting

Fix It Right Garage Doors https://fixitrightgaragedoors.ca > chamberlain-garage-...
Chamberlain garage door will not close all the way. Door will move partially (about 1 foot) then stop and only respond to constant pressure commands. RPM ... ..

if nothing is obstructing the door then there are 2 possibilities:
a) your limit switch for closing is too low and the closer detects the motor stall as the floor is reached, then opens in case it's a kid under the door.
b) your tracks and garage door are mis-aligned, causing excessive force to trigger the reversal. Make sure the door closes easily by hand.

The opener is closing too far. On the side of the opener, you should see 2 white knobs, recessed into the side. Using a flat blade screw driver, adjust the close knob (closest to the door side of the opener), anti-clockwise until the door will close gently on the floor.

It could be closing too far or the sensitivity could be set too sensitive.

Lube the springs, wd-40 rust may be the whole problem.

If the door hits and the opener continues to move until the rail flexes upward and then reverses - probably the travel adjustment.

Does the door close and stay closed if you hold the wall button down constant until it closes? - this would indicate a safety eye problem.

If the door reverses before it hits the floor or just as it hits the floor it could be the sensitivity or if the safety eyes are mounted to the track they could be flexing enough to move the eyes out of alignment.

Hope this helps.

More than one thing can cause this type problem.

If the main light flashes 10 times when the door reverses it is a door sensor problem. Make sure they are pointed at one another and the small light on each one is not flickering ever so slightly.

If the door reverses when it hits the floor it is a sign that the door is traveling a bit to far. The adjustment for this is on the side of the motor unit. Turn the 'down limit' in the opposite direction of the arrow printed on the cover. Some tweaking will probably be necessary.

On the side of the motor unit you will find the 'down limit control'. Using a small screwdriver turn this control in the same direction as the arrow printed on the cover. Some tweaking may be necessary to get it just right.

The safety beams (mounted on the track near the floor) are out of alignment and the LED light should be blinking. The garage door opener will not let the door close if the beams are misaligned. Realign them and the LEDs on the beam or on the operator will stay on. you can close the door now

NOT SURE WHAT UNIT YOU HAVE .
ALL OPENERS HAVE AN ADJUSTMENT TO TELL IT HOW FAR TO GO UP AND HOW FAR TO GO DOWN. LOOK ON THE SIDE OR UNDER A LIGHT COVER.IT HAS TO BE THERE SOMEWHERE

door will not close all the way. will go partway down then reverse itself.

IF IT HITS THE FLOOR AND GOES BACK UP. YOU NEED TO ADJUST THE DOWN LIMIT.

IF IT GOES BACK UP BEFORE HITTING THE FLOOR YOU NEED TO ADJUST THE SENSITIVITY OR THE SAFETY EYES.

TRY THE DOOR MANUALLY AND MAKE SURE IT WORKS SMOOTHLY.