Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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Garage door opener

The garage door goes down but comes right back up. I;ve tried everything!!!!

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  • Anonymous Dec 29, 2008

    Keeps running up and down - doesn't stop.

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It works but it is annoying: you will have to hold down the button on wired wall unit. hold it until the door closes. also if you have the keypad outside it also works the same way, type code and hold the enter button

Posted on Dec 29, 2008

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2 Answers

When I try to close my garage door --4100 model-- the door travels part way down, then reverses and goes to the up position. I can force it closed by keeping the garage door wall switch continually...


Check your door sensors. Make sure they are pointed at one another and the small light on each one is lit and not flickering. Tweak them a little. If you cannot get both lights to come on you have a bad sensor.

Dec 30, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My crafstman garage door opener goes down and then


Remove the cover and check the drive gear. It could be stripped.

Mar 26, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Sears technical support for craftsman products- Will not work with car and remote. Goes down with internal contol, but goes right back up. Tried resetting it fro car and remote, with no results


Sounds like you have a couple problems. The remotes not working is probably the logic board. The door coming right back up is either the door sensors misaligned or the door is traveling too far and hitting the floor.

Jan 20, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Vacation mode keeps coming on our craftsman lift master garage


You possibly have a bad wall control. You say it comes on as soon as the light goes out. What light are you referring to?

Jul 10, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opener will not go down.


first try to add some pressure by turning knob on back of operator, if this does not help inspect circuit board look for indication of a burn some times this is just a brown or dark yellow line in board check gear also and look for shavings... gear kits and circuit boards are not cheap yet easy to install.

Apr 05, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Changed gear box in craftsman garage door opener


you did not give enough info. If it closes completely and right away goes up, if bulb blinking. if it is, something on door is blocking safety beam. If light is not blinking, DECREASE down travel.

Jan 15, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Sears garage door opener problems


We had the same problem.  open the unit and checkt the connections.  we had a few loose wires and every time there was a vibration whether a low flying plane or a truck nearby the door went up.  My husband found a few of the wires had loosened up.

Jan 05, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

The up and down door


If you have a Chraftsman/Liftmaster check the down limit:
 If the light bulb(s) on your operator are on the front and/or back, the limit adjustment screw is on the left side of the operator (looking from the back of the operator and facing  the garage door).. If the lights are on the sides of the operator then the limit adjustment screw is on the left side (looking from the back of the operator and facing  the garage door).
Check the up and  down force: 

Jan 03, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftsman garage door opener


IF IT HITS THE FLOOR AND GOES BACK UP. YOU NEED TO ADJUST THE DOWN LIMIT.

IF IT GOES BACK UP BEFORE HITTING THE FLOOR YOU NEED TO ADJUST THE SENSITIVITY OR THE SAFETY EYES.

TRY THE DOOR MANUALLY AND MAKE SURE IT WORKS SMOOTHLY.

Sep 30, 2008 | Sears Craftsman LiftMaster Chamberlain...

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