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

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Sears Model#139.53615SR Everything works ok but about once a week the door opens on it's own.Please advise Thank You

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There are 3 things you need to check. First and most likely problem is a bad wall control. You can eliminate this by removing it from the wall and then removing one of the wires from the back. Just let it hang and see if your problem goes away. The second possibility is a staple that has cut through the insulation of the two wires that go to the wall control. You can eliminate this possibility by removing the wire from terminal #1 on the rear of the motor unit. Just let it hang for a while and see if your problem goes away. The third possibility is a door that is traveling just a tad too far in the down direction. It sometimes hits the floor just hard enough to cause the safety sensor to reverse it to the open position. You can eliminate this possibility by locating the 'down limit' adjustment on the side of the motor unit and turning that control just a bit in the opposite direction of the arrow printed on the cover. No matter what you hear, the odds of a neighbor or an airplane opening your door is almost impossible.

Posted on May 26, 2011

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I installed a Craftsman garage door a couple of weeks ago and all of a sudden it keeps opening by it's self. It is model #139.53918D what is causing this?


Make sure the door isn't closing too far. This will cause it to open. Your opener comes with a warranty. Call Sears repair.

Sep 04, 2011 | Sears Craftsman LiftMaster Chamberlain...

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I recently bought a house which has a craftsman 1/2 HP garage door opener. The garage door opener works fine using the wall mounted pad and also the numeric key pad, but not with the remote that came with...


If you didn't, try programming the remote this way.

Press and hold the button on the remote and then press and immediately release the smart/learn button on the motor unit. If this doesn't work you need to make sure you have the correct remote for the model opener you have. Your model number doesn't bring any results from Sears Parts.com.

Nov 10, 2010 | Sears Craftsman LiftMaster Chamberlain...

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JUST INSTALLED CRAFTSMAN 3/4 TODAY, WHEN IT OPENS IT WANT TO PULL THE WOOD FRAME FROM ACROSS THE TOP OF THE DOOR AND BEND THE DOOR ITSELF, CAN'T FIND ANY TROUBLESHOOTING ADVISE


How did door work when you opened manually. OK? Did you mount door opener at right height. Reinforce top of door with mending plates. Do not understand your description that you are pulling the wood frame across the top of door.

Apr 25, 2009 | Sears Craftsman LiftMaster Chamberlain...

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I installed a model hd900d garage door opener and added openers clicker model klik1u because i have a stanley old opener i was told i needed this model clicker because i have a purple learn button on the...


My best advise to you is get the brand name remote for your opener. I know it sounds like a pain but click brands are not super great because there supposed to work for many different kinda. For the most part you can call your local garage door dealer and pick one up for your opener. They may sell you a lift master brand opener which is find sears/liftmaster/chamberlain are all the same. Should only be about 35 bucks if you pick it up

Jul 16, 2008 | Sears Craftsman LiftMaster Chamberlain...

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Liftmaster security + model 1265 NOT CLOSING PROPERLY


wbuero, I had same problem two weeks. The door springs weaken over time and may need to be tightened - check opening force manually. Manufacturer also recommended reviewing install guide to be sure opener arm is attached at proper angle. The opener on my professionally installed door was not connected properly. It that doesn't work, the opener drive train or door track/wheels may need maintenence.

Jul 05, 2008 | Sears Craftsman LiftMaster Chamberlain...

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Sears craftsman keyless entry for model 139.53684


If I am correct, there is a green button on the opener. Hold that down until it stop blinki ng. Once it has, pres the opener. It should read the code and work the next time you hit the opener remote.
If not, sorry. This has worked for me

Jun 01, 2008 | Sears Craftsman LiftMaster Chamberlain...

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