Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC

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Liftmaster Professional and Clicker Programming Problems

I bought a house with a Liftmaster Professional Security+ (2000SDR), it came with two Clicker (CLT-1D) remotes. I recently programmed the Homelink on two cars to operate the door as well. Early this week one of the homelinks stopped working.

I reset the liftmaster and tried to program the clickers and now the liftmaster will not recognize them during the program process.

When I push the red programming button the programming light on the liftmaster comes on but does not blink and the garage light never comes on or blinks.

The Clicker still operate the second garage door fine, so I know they are working.

I have verified that the brand switches on the clickers are set correctly (off, on, on, off). The still do operate the other liftmaster.

Does the control boards on the liftmaster fail? Does anyone know of any other possible explanations and hopefully fixes?

Thank you for your help.

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The Security+ system is a rolling code system and is digital, so it will work with the Homelink in vehicles and with the remote control units that come with the opener. Also with new remotes that are purchased specifically for that opener. Your "clickers" require specific instructions and you need to use the Smart Learn function in order to use them with this opener. In addition, check the Brand Switch settings to be sure they apply to your opener, and the correct Smart Button color on the opener. Read carefully to determine whether you need to set ANY dip switches at all or can you just set them all to off depending on your opener? Check the instructions carefully. Here's a link to the page where you can download a copy of the Clicker instructions if you don't already have it:
. Clicker Model CLT1D Remote Control Owner Manual

Posted on May 12, 2014

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I recently bought this house comes with this old liftmaster model 41A3519-1. I bought additional clicker gargage remote. Tried to progammed but everytime when i get clicker remote works, the orignal liftmaster remote won't. If I get liftmaster remote works then my clicker won't. Any idea how to fix this

Posted on Aug 26, 2012

  • Bruce May 12, 2014

    See my answer above

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After you press the button on the back of your operator you then push the button that you want to open the door with on your remote. The light should blink telling you that it has taken the code and things should work. Also sometimes the little numbers from 1 to 10 or 9 get sticky just move them back and forth and check to see that there all the way up or down or in the middle it's something simple like this.

Posted on Jun 07, 2009

  • Jason Aug 26, 2012

    not working still. Looks like it's limited remote users?

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Posted on Jan 02, 2017

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