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

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Liftmaster- both remotes suddenly started opening the door but won't close it. Pushbuttons work fine. Remotes used to work properly. Thx

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Check the sensors in the doorway. They must be pointed at one another and the small light on each one must be lit and not flickering. Tweak them a bit. If you cannot get both lights to come on you have bad sensors.

Posted on Oct 05, 2010

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I have a liftmaster formula 1 1280R opener that works fine from the wall mount but all of a sudden both remotes and the built-in remote in my car stopped working. It is not the batteries in the remotes. ...


The motor/control unit may have gotten reset. It needs to relearn the codes transmitted by the remotes.

MIne has a "learn" button on the control unit. Press and hold, then press the button on the remote. Lights will flash indicating it has received and stored the code. Release button.

Check to see if the remote works now. If so, all three should be working. If not, dig up your manuals.

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Lift-Master 2000SDR opener. Opener generally works fine from the remotes. However, first time in the morning in cooler weather, it will start to close and the reverse and the lights blink. I have checked the senors - appear to be aligned properly. I have lubed the gear and used garage door spray on the rollers and hinges at the proper places. To close the door when this happens, I have to hold the wall button.

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it is possible that when you programmed the car remotes you erased the pairing between your hand held remotes and the unit. Follow the instructions to pair the remotes again and you should be good to go.

Sep 16, 2009 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Garage door opener will not respond to security plus remotes


Reset the Liftmaster unit. There should be a red reset button on the unit in the garage. If this does not work, reset the breaker. Good Luck!

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If you look were the small wires attach to the opener there should be a red program button and instructions on how to program remotes.

Feb 05, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Brand new craftsman remotes don't work when garage is closed


Yes, it seems to be a frequency issue.  Craftsman usually guarantees 50 foot range on your remotes.  Contact Craftsman, they will probably work with you to solve the problem. 

Dec 31, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

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is chain moving. if not, gears are shot. if moving, is trolley connected.

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