Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
We have a 19 year old home with a Stanley 1/2 hp garage door opener. The problem is 2 fold. When it gets cold out...below 30, the door will close and then open by itself. We also have it open by itself during the day when we are not home or will hear it go up in the middle of the night. I have followed all the adjustment guidelines but nothing seems to help. We have a second garage door, same opener, and have never had a problem with that one.
I had the same porblem on mine , all I did was reset the dip switches to a different code and it works fine . I think the local airplanes were setting it off with the code that I had it on . Good luck !
Posted on Jun 09, 2009
Sounds like the Logig board is going bad in your unit.
Posted on Dec 30, 2008
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Posted on Jan 02, 2017
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