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

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My garage door will only open 6 inches then stop. It happens when I use the two car remotes, the wall mounted remote and the keypad outside. The only way I can get it to go up is to go inside the garage and hit the keypad to get it started. After it stops at 6'', I hit it again and its tarts to go down. I immediately hit it when it starts to go down to get it to go up. Only then will it go up all the way. I hope you understand.

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  • kirkson May 11, 2010

    Did it work ok previously and suddenly change? There are travel distance adjustment screws on the side of the unit, that may help.

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Travel adjustment would not only open a door 6 inches. do you have a broken spring or cable. try adding more UP force.

Posted on Jan 15, 2009

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Door will only close about 6 inches then goes back up. Tried remote, keypad and wall remote. Light blinks but nothing happens.


If the main light flashes 10 times when the door reverses it is a door sensor problem. Make sure the sensors 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 bad sensors.

Apr 25, 2011 | Sears Craftsman LiftMaster Chamberlain...

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My Chamberlain Liftmaster Formula 1 garage door opener just started going up 2 inches then stopping. If I hit either the inside wall mount or the remote in the car it just goes back down 2 inches and back...


You need to check the door springs to see if one is broken and also remove the cover from the motor unit and check the drive gear. The gear is white nylon and will be very obvious if it is bad. The part number is 41A2817 and is available at any good door service company. It will come with instructions.

Apr 03, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My keypad works,my remote opener does not, even


It is related. One of the buttons on your wall control is the lock button and has a lock icon on it. Press and hold it for 3 seconds. The blinking should stop and your remote should now work.

Aug 01, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Sear garage door wall mount contol light keeps blinking


Hold the button with the lock icon in for 3 seconds. This should toggle the unit off vacation mode and your remotes will work.

May 31, 2009 | 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

Garage door only opens with wall unit


a component in the wall unit is failing , that makes the conection happen when the remote signal is recieved , ( it is recieving the remote signal but not sending it out to the control circuit for the motor )

Dec 29, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Remote only closes the garage door, will not open it


Anytime a door opens and/or closes randomly or doesn’t work consistently I look for a smashed wire between the motor unit and the wall button.

If the wire is smashed the insulation becomes so thin that power will leak thru the insulation and activate the door or interfere with the remote signal.

Loosen the staples with a small screwdriver and slide the wire about ½ inch to move any areas of thin insulation away from the staples.

The second thing would be a bad wall button or a remote with a sticking button.
Or a remote in someone’s purse that gets the button pushed by other stuff in the purse.

The test is to disconnect the push button wires at the power unit. If the self operation / interference stops you have located the problem. If you reconnect the wires and disconnect the wire at the wall button this will tell you if the problem is the wire or the button.

In your case the expansion of the wall in the afternoon may be enough to cause pressure on the wire to increase the problem – works in the morning but not the afternoon.

Also after you change the batteries you need to reprogram the remotes.

HOPE THIS HELPS

Aug 08, 2008 | Sears Craftsman LiftMaster Chamberlain...

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