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

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We have a electronic garage door. Yesterday- when I pressed the button in the garage to close the door, it would lower but then go back up. I played with it about 15 minutes, trying to get the garage door to close. Do you think the sensor needs to be cleaned....why would it do that....

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  • ktm_1 Nov 06, 2008

    It happens to me when the weather turns cold, I think the metal is condensing. I don't know how to fix this problem.


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Well you little tips to tell if it is your sensor if your opener is a liftmaster/sears/chamberlain then you will hear clicking about 5 times or so coming from your opener also your lights on the opener will flash. If it is doing that then it is with out a doubt you sensors clean them make sure there both looking at each other. both lights should be solid not flashing or off. you might have to move them a bit to get them aligned. If thats not your problem and you door works well by hand you need to up the force on the way down for genie you need to take off the light cover and turn the nob toward the bigger number clockwise just a little. For lchamberlain products the force till be in the back you will need a small flat head screw driver to turn the screws. They are blue dont not turn any other ones. if you have to turn the pressure all the way up to make it work you should have your local garage door guy take a look at it.

Posted on Feb 10, 2009

  • Doorguy27
    Doorguy27 Feb 10, 2009

    Also for ktm_1 it just the force chamberlain products tend to do that in the cold. just turn your force up a hair as well.


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