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

2 Answers

Garage door only opens with wall unit

My garage door only opens with the wall unit inside the garage. Both remotes will not work. The wall unit has a continuous flashing green light. Both sensors have green lights. When I press the remotes, the green light flashes on the door opener unit. Confused!!

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  • y_porter Dec 29, 2008

    Do you recommend I but a new wall unit, since it's failing.

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  • Master
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A component in the wall unit is failing , that makes the conection happen when the remote signal is recieved , ( it is recieving the remote signal but not sending it out to the control circuit for the motor )

Posted on Dec 29, 2008

  • jason Dec 29, 2008

    yes , it would most likely be cheaper to get a new one rather than having that one repaired , as it may be a chip inside that is not available and the whole board would have to be replaced to fix it plus labor cost

    have you tried disconecting the power to it for a while?(half hour)

    sometimes they can get locked up by a holding charge , and disconnecting the power for a while can reset the components but in time will fail again( temporary fix , if it even helps)

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  • Contributor
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SOUNDS LIKE SOMEONE PRESSED THE LOCK BUTTON. THAT WILL CAUSE THE LED IN THE WALL CONTROL TO FLASH - LETTING YOU KNOW IT IS LOCKED - NO REMOTES OR KEYPADS WILL WORK - ALSO USED AS A VACATION SWITCH.

PRESS THE LOCK BUTTON . THE LIGHT SHOULD STOP FLASHING AND REMOTES SHOULD WORK.

IF THEY DON'T - REPROGRAM THEM.

HOPE THIS HELPS

STEVE

Posted on Oct 16, 2014

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