Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
ASSUMING THEY ARE AIMED CORRECTELY--
YOU MAY HAVE A BROKEN WIRE TO THE SAFETY EYE OR A BAD SAFETY EYE.
TRY RUNNING A TEMPORARY WIRE DIRECT TO BYPASS THE ORIGINAL IF THIS SOLVES THE PROBLEM REPLACE THE WIRE. IF NOT ODDS ARE YOU HAVE A BAD EYE.
HOPE THIS HELPS .
Posted on Jun 11, 2010
Try to align it with the emisor sensor...check wires
Posted on Mar 10, 2009
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Posted on Jan 02, 2017
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reversing sensors must be connected and aligned correctly before the
garage door opener will close. An obstruction in the path of the
sensor will also cause your door to not close.
This sensor is an electronic
beam, which is sent between two sending and receiving "eyes".
These eyes face each other and are located just inside your garage
door. They may need to be adjusted so the beam from the sending eye
is properly detected by the receiving eye. Once the receiving eye
"sees" the beam from the sending eye, a green indicator light
will glow on the top of the eye. Tweak them a bit. If both lights do not come on you have bad sensors.
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