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

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Sears garage door... when you close it it hits bottom and opens again may repeat 5 times...nothing blocking eye

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On the side of your motor unit you will find the 'down limit' control. Turn this a bit in the opposite direction of the arrow printed on the cover. Some tweaking of this control may be necessary to get it just right.

Posted on Jul 28, 2009

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All garage doors nowadays have a load-sensitive device, so that, for example, if a child gets in the way, it senses the resistance and goes back up. If the garage door travel is not set correctly, it will continue to try to lower even though it has hit bottom, creating resistance which sends it back up. Check the owner's manual to see how to adjust the travel of the door. It is usually very straightforward.

Posted on Jul 28, 2009

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1 Answer

I have an access master door opener..it goes up about 6 inches and stops, hit switch again, goes down, hit switch again goes up about two feet, hit switch again goes down, third time switch nothing until...


Door sensors have nothing to do with door opening. Only closing. It sounds like you have a bad gear in the motor unit. Remove the cover and it will be obvious if the gear is bad.

Feb 15, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door only raises about two inches then stops.


Check the door springs and also remove the cover from the motor unit and check the drive gear. The door spring could be broken or the drive gear may be stripped.

The sensors only work when the door is closing.

Jun 15, 2010 | Sears Craftsman LiftMaster Chamberlain...

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Garage door repeatedly drops after opening.


Remove the cover from the motor unit and check the drive gear.

Jan 16, 2010 | Sears Craftsman LiftMaster Chamberlain...

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Door will not close. led blinking 5 times


Is your door open or closed? If you release the door is it easy to open and close manually? Does the opener run with the door released?

Jun 22, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Garage door indicator light blinks 5 times


this probably means you have a bad photo eye if you happen to have to doors side by side may be picking up on other sides photo eye just switch sides from left to right, however if the lights are coming on but does not mean that photo eye is not bad it has a small circuit board inside of it...

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

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Chamberplain Garage Door Opener problem


IF U HAVE TWO EYE,SENSORS ON EACH SIDE OF THE DOOR SEE IF SOMETHING IS BLOCKING THE EYES OR SOETHING IS COVERING THEM, OR THEY ARE OUT OF ALIGNMENT, ONE SHOULD SHOW GREEN, AND ONE RED EYE, GOOD LOCK

Jan 25, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Garage door opened, won't close


If you can press and hold the wall button and the door will go down, you have a photo eye issue. Check the photo eyes at the bottom of the door.

Jan 16, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Old nutone garage door opener


Hello,

There should be 2 sensors on the bottom of your door on the inside, 1 on the right side and 1 on the left side.
These sensors serve 1 purpose to send a beam or reflection to each other.
If something is blocking this reflection or is in front of the sensor the door will always come back up.
It is a safety feature so nothing or no one gets hurt when the door is closing!

If any thing is blocking these sensors the door will not close! Make sure nothing is in the way not even a peice of paper.

Sep 19, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Sears craftsman garage door opener


HOLDING DOWN THE WALL BUTTON OVERRIDES THE SAFETY EYES.
WHEN HOLDING IT DOWN MAKES THE DOOR CLOSE PROPERLY THE PROBLEM IS IN THE SAFETY EYES.

ARE BOTH LEDS ON? - CHECK FOR A LOOSE OR BROKEN WIRE.
ARE THE EYES WIRED CORRECTLY?
ARE THEY AIMED AT EACH OTHER?

Jul 13, 2008 | Sears Craftsman LiftMaster Chamberlain...

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