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

2 Answers


I have a Liftmaster 1/2 HP Professional Line chain drive operator I am having a problem with. Mod. 41A4252-7 5/93 K1027 FCC HBW 0777. The two button remote controls will not operate this one door. The wall button operates the door just fine. The remotes will operate the second operator. The door bell style wall push button is flashing rapidly and the remote controls will not operate the door. Both sensor eyes have green lights. I have powered it down for 5 min. and cleaned and aligned the sensor eyes but that did not help. Any advice you could offer would be MUCH appreciated. Thanks!

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  • ramonruiz_s Dec 04, 2008

    The remote controls were working well till the light of the remote on the wall started flashing

  • ronaldjamesh Dec 06, 2008

    My operators only have the door bell style buttons. No lock button. Does anyone have an idea how to turn off the lock feature using this type of button? I tried holding the button down for a few seconds and that did not work. I also powered down the operator with no luck either.


  •  Dan Spurlock
    Dan Spurlock Feb 28, 2014

    Follow the steps to reprogram your remotes. The rapid flashing means they have lost connection. Here is a closeup of the instructions... (My opener is Chaimberlain, model numbers are identical)

  •  Dan Spurlock
    Dan Spurlock Feb 28, 2014

    Close up imgage showing program instructions...


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Does your wall switch have a lock feature? By pressing the lock button, the remote control is disabled. A flashing light indicates this feature has been activated.

To deactivate, press and hold the lock button for 2 seconds. The flashing should stop and your remote should work again.

Posted on Dec 05, 2008

  • Rob Feller
    Rob Feller Nov 22, 2016

    Same problem, older opener, all I have on wall is a switch, kinda like a doorbell


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I followed to procedure to program the remote with button on back of opener. Fixed my problem. Remote works, button no longer flashes,

Posted on Mar 07, 2013

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