Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
Your door sensors are bad or they are not properly pointed at one another. Tweak them a bit to see if you can get both lights to come on. If not they are bad.
Posted on Aug 27, 2010
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Posted on Jan 02, 2017
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Nov 19, 2014 | Building Materials
May 18, 2011 | Chamberlain & Liftmaster Garage Doors
Jan 10, 2011 | Sears Craftsman LiftMaster Chamberlain...
WHEN HOLDING IT DOWN MAKES THE DOOR CLOSE PROPERLY THE PROBLEM IS IN THE SAFETY EYES.
CHECK FOR A LOOSE OR BROKEN WIRE.
ARE THE EYES WIRED CORRECTLY?
ARE THEY AIMED AT EACH HOLDING DOWN THE WALL BUTTON OVERRIDES THE SAFETY EYES.
Oct 09, 2010 | liftmaster Chamberlain Garage Door Opener...
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.
Sep 24, 2010 | Sears Craftsman LiftMaster Chamberlain...
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