Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
Not much information here. Is the main light flashing 10 times when the door reverses? If so you have a sensor problem. If the light is not flashing 10 times and the door reverses when it hits the floor you need to adjust the down limit which is on the side of the motor unit. Turn it in the opposite direction of the arrow printed on the cover.
Posted on Aug 01, 2009
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Posted on Jan 02, 2017
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