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

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How do i set the door limits for the coromaster mach 11 motor

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Posted on Jan 02, 2017

CutOnTheNet
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SOURCE: How do I reset my garage door opener. It is a

The Coromaster 2000 does not operate off limit switches. It has a quarter-revolution optical pulse counter. To re-program the open and close limits do the following: Ensure that the door is open at least a couple of feet. Press the reset button once or twice Short out pushbutton and common and hold until close limit and then release. Door should stop at your new close limit. Wait 5 seconds. Short out pushbutton and common and door will open. Hold the short until open limit and then release. Limits should now be set.

Posted on Nov 09, 2010

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SOURCE: i have a coromaster march

Try this place.

http://www.ileadgaragedoors.co.za/tag/garage-doors/page/8

Posted on Mar 22, 2011

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The problem you have is the closing limit is set too low and needs to be adjusted so the door is just resting on the concrete - currently it is trying to drive through the concrete, the motor detects and obstruction and reverses.

If your Glidermatic GTS 2000 was supplied & fitted prior to April 2010 you can download the 'Limit Setting' procedure on the Gliderol website. If the unit was installed after April 2010 it MAY have a revised PCB known as the NGTSv2 PCB. Contact your local branch for limit setting procedures as they are not yet available to download online.

The combination of a mechanical door and electric motor means periodical adjustment is required to esnsure the travel limits and - most importantly - the sensitivity is set correctly. A service to your DOOR is strongly recommended every 12 months.

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3 Answers

How do I reset my garage door opener. It is a Coromaster 2000 motor. The closing and opening setting are out and the motor only stops due to resistance.


The Coromaster 2000 does not operate off limit switches. It has a quarter-revolution optical pulse counter. To re-program the open and close limits do the following: Ensure that the door is open at least a couple of feet. Press the reset button once or twice Short out pushbutton and common and hold until close limit and then release. Door should stop at your new close limit. Wait 5 seconds. Short out pushbutton and common and door will open. Hold the short until open limit and then release. Limits should now be set.

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

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