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

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Door opens by itself in storm - Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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Here are 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.


Posted on Aug 25, 2010

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Posted on Jan 02, 2017

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Door sticks terribly...


First check to make sure that the hinges are securely fastened to the door jamb. Gently try to tighten all screws but be careful not to over-tighten or strip the screw heads. It's possible loose screws could be causing the door to hang slightly making it fit improperly into the door jamb.

It's also possible that the door frame isn't 100% "true" and it could be causing the storm door to get caught along the top or bottom edge. You can check with a level to make sure that both sides of the door are plumb (perfect 90 degree angle). You can also use a carpenter's square to check that all of the interior angles in the door jamb are 90 degrees respective to each other.

If everything is square then it could be that the hinges on the storm door are not aligned properly. With the storm door slightly ajar use a level on the vertical edge both at the top and the bottom. It should, ideally, be the same as the door jamb. If it's slightly off you could try shimming either the top or bottom hinge as necessary to even the storm door until it is aligned with the door jamb.

If you find that your door jamb is not "true" then you may need to consult with a carpenter or storm door installation expert to find a way to trim your storm door or refit it for easy opening and closing. Many older homes settle over time and sometimes door jambs slip out of alignment. The door itself may still open and close as usual but it may have sufficient gaps on all sides to prevent it from getting stuck. The newer storm door may be too tight a fit and catching on a door jamb that has settled out of true.

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I WOULD SUGGEST ADDING A SURGE PROTECTOR AT THE PLUG IN TO PREVENT DAMAGE TO YOUR UNIT IN THE FUTURE.

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you need to shim in the frame of the storm door

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