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

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Garage Door Won't Open or Close with Motor

Hi,

Our garage door wouldn't close today, so we closed it manually. Now we can't get it back working with the button at all. Could it be off track? Is there a way to reset? A secret button? Thanks

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  • marty metzger May 11, 2010

    Have no idea what you mean when you say "the Button". A wired wall button or console; a remote control, Need further info. What model, how old

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You give nothing to work with. How old is unit. what brand? off track=no. way to reset -maybe OLD units have reset button on back panel (35 yr old_. Did you overheat by trying too many times. Wait 15 minutes for motor to cool and it will be ok. If none of this, provide more info (PS - is power on)

Posted on Jan 15, 2009

  • marty metzger Jan 15, 2009

    if there is a secret button and i tell you, it would not be secret anymore. you need to provide better description of what is or isn;t happening,

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My liftmaster will open with the remote but to close the door, we have to hold down the wall unit. It starts to close, jerks to a stop, then we have to press and hole the button and it closes.


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I have the same problem. Door does not open or close when press the push button and/or transmitter. The light flashes 5 times. Manually open or close the door is ok. On the manual troubleshoot, it says it's either the opener is overheated or it's on vocation mode. I don't know how to switch of vocation mode. Is it possible the thermal sensor is broken?
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The motor runs but it only opens a few inches and slowly goes back down its a chamberlain whisper drive model HD900D


Hi. I have seen this before, although usually not from chamberlain garage door openers.

Pull the release cord that unlocks the door from the opener, and manually open the door ALL the way open.

Then lock back in place in the open position.

Then use automatic opener to shut door.

It will close very slowly, but should close all the way.

Then, open the door again using the remote, and the door will once again open slowly, this time it should open all the way.

Then close door with remote, and door should now close as it is supposed, with the proper speed.

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This is why your door is acting up.

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It moves up a few in. then stops. Then you push the button again it closes hard aginst the floor. I disconneted the dr andf it still dose the same thing.


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You could disconnect the motor and manually move the carriage back to where is should be, then engage the motor again.

If this is a chain drive, the chain may have slipped cogs until it thinks the door is up when it is only inches up.

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What is wrong is you need to adjust the limit on the door when it comes up. What it is doing is coming to far back on the track. You need to push the back limit forward away from the motor so the door does not come back and drop down on the inside of the garage. The opener is trying to push the door up hill to get it to close that is why you are getting the bend in the track.


Good Luck

Oct 19, 2009 | Sears Craftsman LiftMaster Chamberlain...

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