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

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Craftsman GDO reverses itself when the door reaches the eyes

The door reverses, light blinks 10 times. I have checked the alighnment of the eyes, they seem ok, have the green lights on.

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The only thing that will cause the main light to blink 10 times is a sensor problem. Sometimes the sensors will be misaligned just enough to turn the light on but will not work properly. If you look really close (on your knees) you can see the receiving sensor blinking ever so slightly. Tweak the sensors until the light glows constant.

Posted on Jun 26, 2009

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