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

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My merlin 230T won't open or closes with remotes but will operate when button on unit is pressed.

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Unlock the LOCK

Posted on Jul 11, 2010

  • Russell Cargill
    Russell Cargill Oct 21, 2016

    What is meant by unlock the lock ?
    How do you unlock the lock?

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1 Answer

I have older model Merlin 430R door openers but can't find "learn button" to connect new remotes There is no green cover to remove


If the opener is the Merlin ProLift 430R, then there should be a Red learn button under the green control panel cover on the left side of the front of the garage door opener. (There is a black cover on the right side of the front of the opener.) See https://www.manualslib.com/manual/886850/Merlin-Prolift-430r.html?page=4#manual for a picture of the control panel. The learn button is in the center of the set of three buttons between the open and close force dials.

To use the learn button, you need to press and hold the button for 1-2 seconds until the courtesy lamp flashes. If you hold the button for 11 seconds or more, the garage door opener will forget all of the remotes. See https://www.manualslib.com/manual/886850/Merlin-Prolift-430r.html?page=6#manual .

I hope this helps.

Cindy Wells

Aug 26, 2018 | Building Materials

1 Answer

Hey I want to know where the learn button is on merlin 230t garage door motor thanks


Press and release the green operate button to move the
door up or down. Press again to stop in the required fully
open or fully closed positions. Each time the operate button is pressed the door will stop or move in the opposite
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Feb 11, 2017 | Building Materials

1 Answer

Merlin prolift 230T won't open with remote. The chain goes around but it does not open or close the door


someone unlatched it to open by hand and the disconnect needs to click back in . give it a wiggle (the rope)

May 08, 2015 | Building Materials

1 Answer

I have a Merlin 230T garage door opener and it has started to run in the opposite direction. ie; it is closed now and when I use the remote control it tries to close more


Pull the emergency release handle. Use remote to open door then close it again with the remote. Now re engage the emergency release. That should put the chain in the right position for proper operation.

Aug 28, 2014 | Building Materials

1 Answer

Merlin 230t


If the chain is loose I would definitely tighten it up to remove the sloppiness of the drive. That will in turn help you to accurately find the sweet spot that is currently eluding you. And you have to work fast because you do not want to overheat the motor.

Sep 21, 2017 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Merlin Prolift 230T wont clear / delete remotes from memory


Press 'setup' key for 11s not 'learn' key.

Jun 26, 2012 | Cell Phones

3 Answers

I have a Merlin 230T garage door opener which abruptly stopped working altogether. Could it be the fuse?--or any other suggestions.


There is a fuse in a Model M-230T and I have seen a service man change it.Now that the fuse has blown again, I want to change it myself BUT can't now find it!

Can anyone please offer a guide to changing the fuse?

Sep 22, 2010 | Sears Craftsman LiftMaster Chamberlain...

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