LOOK FOR THE TWO ADJUSTING SCREWA WITH A LITTLE PICUTE OF A DOOR OR THE WORDS UP DOWN.
TURN THE DOWN ADJUSTMENT ABOUT 1/4 TURN AND TEST - DON'T OVER ADJUST YOU WANT THE DOOR TO CLOSE SOLID ON THE FLOOR
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There are two possibilities here. First is if the main light flashes 10 times when the door reverses it is a door sensor problem. Make sure the sensors are pointed at one another and the small light on each one is lit and not flickering. Tweak them a little. If you cannot get both lights to come on you have bad sensors.
Second is if the door is reversing when it hits the floor. This is a problem with the door traveling too far in the down direction. Locate the 'down limit' located on the side of the motor unit and turn it a bit in the opposite direction of the arrow printed on the cover. Some tweaking may be necessary.
To release the door with the rope - pull straight down and then pull the rope in the direction away from the door. This should lock the mechanism in the open position. To release this pull straight down and release.
Sounds like the down limit is out of adjustment.
Turn the Down limit switch opposite the direction of the arrow a quarter turn and try again.
Repeat until the door stops before hitting the floor then fine tune to shut off at the floor.
look for 2 plastic screws, should be white in color. the screw on the left adjusts the down travel. there should be arrows pointing to which way to increase the travel(i think turning left for down). if you only need a few inches to reach the floor you should be able to adjust. if its way off there may not be enough adjustment. 1 full turn will move will door a couple inches so adjust a little at a time or you may overshoot. good luck
Garage doors have a setting that will do this. The door is traveling too far down and when it hits the floor, it thinks it is hitting something. There should be adustment knobs on the back of the unit to solve this. Good luck!
If the garage door is hitting the floor and reversing to the open position you need to adjust the 'down limit' which is on the side of the motor unit. Turn it in the opposite direction of the arrow printed on the cover. A little tweaking should get it just right.
to tell you how to fix this is tricky your limit switch is not working, if it is a liftmaster, or sears craftsman take the cover down, if it is a older allistar it is a dog limit on the chain, if a genie check the cherry switch in back of operator behind cover.
There is a sensitivity switch for both directions, open and close. If you access the garage door opener in the ceiling, you will see two adjustment screws for calibrating these. I would highly recommend following the instructions in your manual, as these are life safety adjustments! Your sensitivity for closing the door is adjusted to the positive. You just need to back it off a little. Place a 2x4 on the floor of the garage where the door comes down. and when the door hits the 2x4, it should automatically come back up. If not, you adjusted it too far. Hope this helps. and remember, check the manual for your specific adjustment procedures.
IF THE DOOR CLOSES ALL THE WAY WHEN HOLDING DOWN THE WALL BUTTON AND REVERSES 6" FROM THE FLOOR WHEN NOT HOLDING THE BUTTON.
I WOULD GUESS THAT THE SAFETY EYES ARE MOUNTED ON THE TRACK.
WHEN THE DOOR CLOSES THE TRACK AT THE BOTTOM IS TOO TIGHT CAUSING IT TO FLEX AS THE DOOR GETS NEAR THE BOTTOM. WHEN THE TRACK FLEXES THE EYES ARE POINTING FURTHER AWAY FROM THE DOOR AND EVENTUALLY THEY ARE TOO FAR OUT OF ALINMENT AND THE LED WILL GO OFF - THE DOOR GOES BACK UP.
SOLUTION: YOU CAN USE THE CLAW END OF A HAMMER TO TAP THE TRACK OUT A LITTLE WIDER - TAP NEXT TO THE WALL ON THE BRACKET THAT HOLDS THE TRACK TO THE WALL. MOVE THEM ABOUT 1/4" EACH SIDE.
YOU CAN MOUNT THE BRACKETS TO THE WALL OR THE FLOOR.
I can't believe it! My opener works fine a 10 degrees and above but below 10 degrees it would go down a little ways stop and go back with the light flashing. I checked the electric eye and found it would go out of alignment when the temp drop. Who knew! I made the adjustment and it now works fine.