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

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Garage Door Opener Light does not come on when it is supposed to

I have a Sears Garage door opener that is about 12 years old. It has the safety reversing sensors. When the door is in the open position and the lights have gone off, and then the safety beam is broken, the lights come back on. This no longer happens and I'm wondering if anybody can help me with this. If you start to shut the door, and then trip the beam, the door does reverse, so I know the wiring and positioning of the safety beams are correct. Any help will be greatly appreciated.

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  • sunbum Jan 15, 2009

    I'm having the same problem. I have yet to take each sensor wiring
    down and check for shorts. The wires are all out of the way along the
    ceiling and I used the insulated staples when installing them, so I'm
    reluctant to believe it's a short as noted in the troubleshooting
    section of the manual.

  • ronaris Jan 16, 2009

    Marty and Sunbum,

    Thank you both very much for replying to my question. It worked!! I'm a little embarrassed that I read through the manual several times and missed that sentence on page 32.




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Great call Marty! I had noticed the amber LED above the learn button was blinking with one pulse, which the troubleshooting guide noted as being a problem with the sensors. Finding that one tiny paragraph in the manual and following the instructions of holding the wall-control light button in for 10 seconds reprogrammed it and the functionality is returned. Thanks!

Posted on Jan 16, 2009

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Ronaris says door works, right. sunburn is going too far ahead if door works. On wall console, you can select to have opener lights come on when you walk past safety beams of open door. read manual. easy to do.

Posted on Jan 15, 2009


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