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

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Door will not work in cold weather.

I have a Craftsman 3/4 HP door opener. It is less than 2 years old and in cold weather (Less than 40), when you hit the button, the light will flash but the door will not rise or lower. I live in Dallas and it does not get severly cold, but this is the second winter that this has happened. Once the temps get above about 40, the door works fine. Please help.
Robert Gordon

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  • ghomeghome Jan 18, 2009

    Thank you for the information. I will try to make the adjustment. I notice that it is set on the lowest (1-9). Of course it is warm today so I may have to wait a few days until it gets truly tested.

  • ghomeghome Jan 24, 2009

    I waited until the next cold snap and tried the adjustment. It didn't work. I tried it at a setting of 3 (out of 9) and then worked it up until I had it at the highest setting. The door still will not close in the cold weather. I am stymied. Thank you for trying.

  • Anonymous Jan 24, 2009

    I had the same problem with the cold and the garage door not closing. What I found that works is holding down the button to open and close the door. If I do this - the door will either open or stay closed when I let my finger off the button. Try this and see if it works for you.

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Leave car outside. Seriously, try a little more force to force adjustments.

Posted on Jan 17, 2009

  • marty metzger Jan 24, 2009

    does it close manually ok? Try checking rpm interrupter cup. Is it push on tight (Behind logic board, take off 4 screws, tilt board and push on black cup).

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