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

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My garage door goes down a few inches and the reverses and stays closed. The saftey electric eye on my garage door opener is solid green on the sending side and a slow, intermitent flashing, light green on the receiving side. Is one of the units defective?

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Your electric eyes are most likely not pointed correctly. Tweak them until the one that is flashing stays on.

Posted on Oct 11, 2010

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My door will open and close completely, then the next time it only begins to close ,goes about 12 inches then reverses..what is wrong with it


Try turning your down force up alittle higher if your door is only wanting to go down a foot or so. If your light bulbs are flashing, you then have a problem with the safety eyes.

Dec 26, 2014 | Building Materials

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Garage door won't close with remote and I have to hold the pad to make it go down, however it opens just fine.


Your safety 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...

2 Answers

Sensor problem with garage door opener. One of them has a yellow light the other a green. The door starts to close than stops. You can close it if you hold the button down inside and the remothe doesn't...


If it moves 6-8 inches and then stops it is most likely the rpm sensor.

Yellow and green are what the lights should be.

Does the led on the wall control blink?? If is does press the lock button.
If it doesn't you will need to reprogram the remote.

Watch the eyes as the door closes, does one of them go off? If so the track may be flexing causing misalignment. (Widen the track near the bottom)

If all of the above don't help check the sensitivity adjustment. Turn it about 1/8 turn clockwise and try the door again - continue this until the door goes full cycle without reversing. If you have to set the sensitivity past 3/4 the door needs to be adjusted.

Jul 20, 2010 | liftmaster Chamberlain Garage Door Opener...

1 Answer

When you push either the remote or the switch at the door, the garage door will go down almost to the bottom and then come back up and the light will blink several times. This does not happen all the time....


Your safety 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.

Jan 03, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Pressing remotes the door won't go u[


It sounds like you have the lock enguaged. When it is flashing it locks out all remote access. Hold the lock button for 3 seconds. The green light should go solid. On the issue of closing, it is most likely a safety eye issue. Hold down the wall button. If it closes it is the safety eyes. Holding the button overrides the safety eyes. Make sure that thelight on both eyes are both lit.

Jan 27, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

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What has happened is that you electric eyes are blocked or have gone out. The eyes are at the garage door about a foot of the ground on both sides. There should be a red or green light on one of them. If not some thing is blocking the beam that goes across the door. It is a safety beam so kids can nt get hurt when the door is coming down. If the beam is broke the door will go back up.

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Craftsman garage door opener won't close completely


look on the side of the openeer usually lekt looking at it from the rear theese are your travel adjusters one turn = 2" travel normally

Jan 07, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opener does not reverse after hitting obstruction


release the door from the opener and see if door moves freely the check proper torsion by moving door up to 3-4 ft if it stays in this area torsion is properly set if not call technician to adjust torsion
if door does not move freely all the way up and down check for binding track alighnment and roller condition. the adjust closing pressure.

Jan 07, 2009 | Sears Craftsman LiftMaster Chamberlain...

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is bulb on motor flashing 10 times. then you have electric eye problem. otherwise, sounds like you need to increase down force a hair. adjustement is on logic board, right knob.

Jan 06, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Automatic Garage door reverses and automatically opens after closing


I can't believe it! My opener works fine a 10 degrees and above but below 10 degrees it would go down a little ways stop and go back with the light flashing. I checked the electric eye and found it would go out of alignment when the temp drop. Who knew!
I made the adjustment and it now works fine.

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