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

1 Answer

Garage Door only opens with wall unitq

My garage door will only open when I hit the wall unit inside the garage.
The remotes will not work at all. When I hit the remotes, the green light flashes on the garage door unit. The door sensors are both green, but the wall unit has a continuous flashing green light.

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  • rbayless59 Dec 31, 2008

    Does this solution work when the inside button has but a single button and is not a three-button unit with a dedicated "lock" button?  How do you unlock the sytem using a single-button switch?  How did I manage to lock it?  I've lived in this house for 13 years.


    The light on my single-button wall switch is blinking and neither of my remotes is working.  The door still operates from the wall switch.

  • jamie2tammi Apr 09, 2009

    I have a single button wall switch and my remote is only one switch. The wall button will operate the door but not the remote. I can see the l.e.d. light blink when I push the remote but nothing happens.

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  • 37 Answers

The unit is in the lock mode, push and hold the lock button in for about two seconds and the green LED should stop flashing. Your remotes should work.

Posted on Dec 30, 2008

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