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

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Garage door opens but does not close

My garage door opens with the wall button and remote but does not close unless I keep the wall button pressed. I notice the two photo eye at the bottom of garage door. One of the eye/receptor is off. The other has the green light but one does not. 
Do I have replace that? what is that called? Can you please help me.
Its a Chamberlain 1/2 hp

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  • fjf7 Dec 28, 2008

    Exactly the same problem with the photo sensors one has the green light on and the other it off!!!!

  • Anonymous Mar 23, 2014

    the seeing eye is malfunctioning

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Check that lenses on safety beams are clean and that they are aimed at each other so that both have led light on.

Posted on Jan 15, 2009

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My liftmaster will open with the remote but to close the door, we have to hold down the wall unit. It starts to close, jerks to a stop, then we have to press and hole the button and it closes.


Hi, it is probably the safety photo beams out of alignment or not working, when this happens the garage opener goes into 'dead man' operating mode, ie you need to keep the button pressed for the door to operate. You can find user and installation manuals here - Liftmaster Garage Door Opener Installation Manuals

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That button on the wall is called a wall control. If you have a wall control with 3 buttons and the light in the control is flashing you need to press the lock button and hold for 3 seconds. Make sure the battery in your remote is good.

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1 Answer

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1 Answer

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It sounds like you have the lock enguaged. When it is flashing it locks out all remote access. Hold the lock button for 3 seconds. The green light should go solid. On the issue of closing, it is most likely a safety eye issue. Hold down the wall button. If it closes it is the safety eyes. Holding the button overrides the safety eyes. Make sure that thelight on both eyes are both lit.

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