Question about Building Materials
Door close 1/3 and then reverses and opens
Posted by Anonymous on
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Posted on Jan 02, 2017
try adjusted the sensor controls on the sode of the unit other wise replace the logic board
Posted on Jan 10, 2008
There should be two small white adjustment knobs on the side of the unit that you turn with a small flathead screwdriver. These are the load / limit adjusters.
What it happening is it think there is something stuck under the door (like a car hood, etc)
These adjustments are VERY sensitive, so be patient while adjusting them.
Posted on Feb 11, 2008
If you have a Chraftsman/Liftmaster:
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 and down force on your operator (the box that hangs from the ceiling and reads Craftsman). If the light(s) on your operator go from 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.
C. If this does not solve your problem the top bushing could be going out of your operator. Open the case and see if a lot of black filings are on the top of the big gear. If so the gear assy. will have to be replaced part # 41C4220A
Posted on Jan 04, 2009
Not familiar with lynx but every sensor I have seen or heard of has a light. It is the only way to tell when they are pointed correctly at one another.
Posted on Jan 08, 2010
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