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

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Can open with remote, or wall-mounted button, but cannot use remote to close, and have to hold wall button down continuously (unit blinks when button is pressed and released, and stops closing until button pressed again)

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If the main light is flashing 10 times when the door reverses you have a door sensor problem. Make sure they are pointed at each other and the small light on each one is lit and not flickering. Tweak them if necessary. If you cannot get the small lights to both come on you have bad sensors.

Posted on Feb 02, 2010

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This is a faulty condition caused by lack of error control in the firmware. Try this:

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