Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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Craftsman garage door opener

After I close my garage door it opens back up automatically.

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  • keenerdeb Sep 30, 2008

    After my garage closes it automatically opens up by itself.

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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.

Posted on May 30, 2010

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1 Answer

The garage door seems to pick up speed the last two feet when closing then it automatically goes back up


Sounds like a spring tension problem. Best toi call a professional as retensioning the springs can be a source of serious personal injury.

Sep 12, 2014 | Sears Craftsman LiftMaster Chamberlain...

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Garage door opening when hitting close button


If the main light is flashing 10 times when the door reverses to the open position it is a door sensor problem. Make sure they are pointed at one another and the small light on each one is lit. Tweak them a little if necessary.

Sep 21, 2009 | Sears Craftsman LiftMaster Chamberlain...

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How to switch back to automatic after manually close the garage d


mikey-moore's advice helped me figure out what to do but it's not exactly what I had to do. Manually open the garage door all the way. Then hit the automatic button you normally would use to open and close your garage door. The bracket slides back and locks into place. Hit the automatic button again and the garage door should automatically close.

Jul 19, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door closes and then automatically opens half way


ADJUST THE DOWN LIMIT IT THINKS THERE IS AN OBSTRUCTION AND IS REVERSING LIKE IT SHOULD.

TURN THE LIMIT ABOUT 1/4 TURN AT A TIME.

HOPE THIS HELPS

Mar 15, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

After opening, my automatic garage door creeps back down a bit


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.

Mar 13, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

GARAGE DOOR OPENS BUT WILL NOT CLOSE AUTOMATICALLY


is bulb on motor flashing 10 times. then you have electric eye problem. otherwise, sounds like you need to increase down force a hair. adjustement is on logic board, right knob.

Jan 06, 2009 | Sears Craftsman LiftMaster Chamberlain...

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