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

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Last night, I went to close my garage door and as it started to close (door moved about a foot), it reversed directions and opened. I suspected a cat might have ran in and tripped the safety sensor, but, then when I tried to close it again the door does not move at all. I can hear a click when I push the wall or remote button but that's it. The light doesn't blink but does come on when I puch the button. Any ideas? Thanks Ronn

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On the rear of the motor unit near where all those white wires go you will find a small light. Check to see if it is flashing a code. It will flash a number of times then pause and then repeat. This will help diagnose the problem. Also make sure the trolley hasn't traveled too far and jammed against the bolt just in front of the motor unit. Post back.

Posted on May 25, 2011

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My craftman garage opener will not close. The up arrow blinks 3 times and the down arrow blinks 2 times. the button on the unit will not open or close it. It will move about a foot then reverse back.

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The safety beam portion of the garage door opener is set up to stop the door from closing if something (car, person, etc,.) is in the doorway.

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1 Answer

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