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Liftmaster 1255lm garage door opener

Wall mount button works every time to open and close garage door. The remotes will open the garage door but only sometimes closes it. The light does not blink (nothing triggering safety eyes). What is wrong with remotes/door opener?

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  • Russell Law
    Russell Law Feb 12, 2014

    the IR safety beams seem to work. The LED registers things moving in front of it, the LED isn't dim at all, they function every time I test them. Using the wall button works every time.

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  • Master
  • 1,554 Answers

It sounds like a problem with the infrared safety beams, either they are not working, are misaligned (someone might have kicked/bumped into one), or I even had one that didn't work because there was too many cobwebs/dust covering one of the lenses.

Posted on Feb 11, 2014

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SOURCE: Liftmaster 1280 LMC Motion Detector Garage Opener Push Button Pad Not Working

Have you tried to reprogram the chanel again?
Changed the battery?

Posted on Aug 02, 2008

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SOURCE: liftmaster garage door opener will only work at wall unit

check electric saftey beams. shovel blocking them. dirty. aligned (LED on in each unit)

Posted on Jan 15, 2009

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SOURCE: Chamberplain Garage Door Opener problem

IF U HAVE TWO EYE,SENSORS ON EACH SIDE OF THE DOOR SEE IF SOMETHING IS BLOCKING THE EYES OR SOETHING IS COVERING THEM, OR THEY ARE OUT OF ALIGNMENT, ONE SHOULD SHOW GREEN, AND ONE RED EYE, GOOD LOCK

Posted on Jan 25, 2009

  • 3197 Answers

SOURCE: Sear garage door wall mount contol light keeps blinking

Hold the button with the lock icon in for 3 seconds. This should toggle the unit off vacation mode and your remotes will work.

Posted on Jun 01, 2009

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1 Answer

My liftmaster formula1 opens everytime but only the wall button will close it. Once in a while a remote will work but rarely. I have one remote, one vehicle oem remote and a wall mounted remote outsid


does it attempt to close. stop go back up and the lights flash....if so check the safety eyes, check for boken spring/ springs using the wall mount button circumvents the safety system. check the down pressure setting.

Nov 15, 2014 | Building Materials

1 Answer

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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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My Chamberlain Liftmaster Formula 1 garage door (2002) has stopped working. The power is on -- light turns on when I push the wall mount button. But the remotes no longer work. The door does not move. ...


The light by the learn button may be sending a diagnostic code. See if it is flashing a number of times, pausing and then repeating. Count the flashes. Is your door stuck in the open posititon?

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On the wall control with the flashing light press and hold the button with the lock icon for 3 seconds and release.

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If the small light in your wall control is blinking it is in the lock mode. Press and hold for 3 seconds the button with the icon of a lock. This will toggle the lock function off.

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Check the wiring going to the sensors to make sure it is not broken or disconnected. You have a problem with the sensors themselves or the logic board. Unfortunately the only way to be sure is to replace.

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1 Answer

Sear garage door wall mount contol light keeps blinking


Hold the button with the lock icon in for 3 seconds. This should toggle the unit off vacation mode and your remotes will work.

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Liftmaster garage door opener will only work at wall unit


check electric saftey beams. shovel blocking them. dirty. aligned (LED on in each unit)

Jan 12, 2009 | Sears Craftsman LiftMaster Chamberlain...

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