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

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Neither remote opens or closes door, the green light on the wall control flashes rapid

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Press and hold for 3 seconds the button on the wall control with the lock icon.

Posted on Oct 05, 2009

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1 Answer

Garagedoor opener fixed on wall will will open and close door. but will not work from the remote. problem my be because little green light flashing permanently. what is solution


Your opener is in the lock mode. Press and hold the lock button on the wall control for 3 seconds. This should stop the flashing of the light.

Feb 22, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My liftmaster 1250LM won't operate with the remote (or my travel link in the other car) while the unit light is lit. So when I open the door from the remote and back out I have to wait two minutes for the...


On the end of your opener where the small gray antenna is you will find an LED that flashes rapidly when you use your remote. When you release your remote it should stop flashing rapidly and just occasionally flash. See if this continues to flash rapidly while the bulb is on and your remotes are inoperative. If it does, remove the bulb and do the same thing. I have a feeling your light bulb is radiating.

May 08, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opens intermittantly after it has been closed for a while


Here is some information and tips to try.

Look at the LED light next to the SMART/LEARN button on rear of the motor unit. You may need to remove a light lens cover in order to see it. If the light is flashing rapidly this means you have a stuck button on one of your remote controls. Take the batteries out of each remote control. When you remove the batteries from the bad remote, the light will stop flashing. This remote needs to be replaced.


If one of your neighbors remote controls is inadvertently programmed into your receiver, you door will open when their remote is activated. If this happens you will need to clear out your receiver and reprogram your remote controls. Press and hold the smart/learn button for 6 seconds or until you see the small LED light near the button turn itself off. If the above steps have been followed and the symptoms continue, there may be an electronic short in either the wall control button or the receiver logic board. In this case, remove the wall control wires from terminals 1 and 2 on the motor unit. Should the symptoms persist after the wires are removed, replace the receiver logic board. If the symptoms stop with the wall control wires removed from the motor unit, replace the wall control button, and the wires leading to the wall control button.





Jan 04, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftsman Model 139.53684 Security+ Keyless Entry Garage Door Opener... Green light flashing on door control push button. Remotes no longer work. Can open and close garage door from keypad. Why is light...


To answer your question the opener is in vacation mode. Press and hold for 3 seconds the button on your wall control with the lock icon. The green light will stop flashing and you will be back in business.

Dec 08, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opens and closes randomly without anyone being around


Some things you can check.

Look at the LED light next to the SMART/LEARN button on rear of the motor unit. You may need to remove a light lens cover in order to see it. If the light is flashing rapidly this means you have a stuck button on one of your remote controls. Take the batteries out of each remote control. When you remove the batteries from the bad remote, the light will stop flashing. This remote needs to be replaced.


If one of your neighbors remote controls is inadvertently programmed into your receiver, you door will open when their remote is activated. If this happens you will need to clear out your receiver and reprogram your remote controls. Press and hold the smart/learn button for 6 seconds or until you see the small LED light near the button turn itself off. If the above steps have been followed and the symptoms continue, there may be an electronic short in either the wall control button or the receiver logic board. In this case, remove the wall control wires from terminals 1 and 2 on the motor unit. Should the symptoms persist after the wires are removed, replace the receiver logic board. If the symptoms stop with the wall control wires removed from the motor unit, replace the wall control button, and the wires leading to the wall control button.



Nov 24, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have the same problem.The garage door opens or closes on its self after setting up the new remote chamberlain. i foun out every time my nabour closes his garage door mine opens.


Look at the LED light next to the SMART/LEARN button on rear of the motor unit. You may need to remove a light lens cover in order to see it. If the light is flashing rapidly this means you have a stuck button on one of your remote controls. Take the batteries out of each remote control. When you remove the batteries from the bad remote, the light will stop flashing. This remote needs to be replaced.


If one of your neighbors remote controls is inadvertently programmed into your receiver, you door will open when their remote is activated. If this happens you will need to clear out your receiver and reprogram your remote controls. Press and hold the smart/learn button for 6 seconds or until you see the small LED light near the button turn itself off. If the above steps have been followed and the symptoms continue, there may be an electronic short in either the wall control button or the receiver logic board. In this case, remove the wall control wires from terminals 1 and 2 on the motor unit. Should the symptoms persist after the wires are removed, replace the receiver logic board. If the symptoms stop with the wall control wires removed from the motor unit, replace the wall control button, and the wires leading to the wall control button.

Oct 14, 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...

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...

2 Answers

REMOTE CONTROLS WILL NOT WORK-WALL BUTTON FLASHING RAPIDLY


Does your wall switch have a lock feature? By pressing the lock button, the remote control is disabled. A flashing light indicates this feature has been activated.

To deactivate, press and hold the lock button for 2 seconds. The flashing should stop and your remote should work again.

Dec 03, 2008 | Sears Craftsman LiftMaster Chamberlain...

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