Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
Green light not working yellow light is on why? Please advised
Posted on Dec 29, 2012
It sounds like the sun is shining on your door sensor and causing it not to work properly. Try shading the sensors and try.
Posted on Jan 23, 2012
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Posted on Jan 02, 2017
On the back of the opener near where all those white wires go you will find 2 controls. One is labeled "up force." Increase this about 1/4 turn.
Posted on May 18, 2009
The lights are suppost to be yellow (power to photo eyes) and green (lined up).
1.Check to see if the door is running correctly.
A. Run the door down and pull the emergency release. See if the door will run easily by itself.
1. If it runs hard by hand try lubricating the rollers and hinges with silicone spray or some form of lubricant (not WD 40)
2. If the door is heavy and falls back to the ground, you probably have a spring issue (either broken or needs more tension) in this case call a professional door repair company in your area.
B. If the door runs fine then check the up force on your operator (the box that hangs from the ceiling). If the light bulb(s) on your operator are on the front and/or back, the force adjustment screw is on the back of the operator. If the lights are on the sides of the operator then the force adjustment screw is on the right side (looking from the back of the operator and facing the garage door). Turn the light blue adjustment screw with the up arrow to a higher number.
Posted on Jan 10, 2009
They are doing what they are designed to do. To work properly they must be pointed at one another and to tell when they are aligned the light on the receiving unit turns on.
Posted on Jun 08, 2009
Most likely your door sensors have been bumped and are not aligned properly. Make sure they are pointed at one another and the small light on each one is lit and not blinking.
Posted on Apr 30, 2009
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