Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC

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Liftmaster 1245lm Door will open once or close once with remote and will not work again with a remote until the light goes off...

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Posted on Jan 02, 2017

  • 118 Answers

SOURCE: My Liftmaster garage door opener will not close

You have a problem with the safety eyes. Make sure both eyes have a lit Led light, if not realign sensors

Posted on May 15, 2009

  • 25 Answers

SOURCE: Liftmaster Remote garage door openers work intermittently.

check to see if your ant. is up inside of the cover it's a little black wire that hangs outside of the operator shiould be about 6 inch.

Posted on Jun 07, 2009

  • 25 Answers

SOURCE: Chamberlain Liftmaster 1246R won't open/close

if youcan hear the motor turning when you hit the remote or wall button the plastic gear in the oprator has been ripped and if you take the cover off you will see all of the whote plastic dust that has come from the gear being shreded. You can replace this gear. you do not have to buy a new operator. it is very easy to replace this gear. I can't tell you were to buy one because I buy all my stuff from a dealer.

Posted on Jun 11, 2009

  • 25 Answers

SOURCE: Garage door will not close from remote or car.

wI have never heard of this problem. you have to hold the button on your wall in to close the door. no way this is not right something wrong with your board insid the opener. get help from a pro. I would love to see this been doing this for 20 years never heard of this.

Posted on Jun 20, 2009

  • 384 Answers

SOURCE: door opened and will not close or open now

Drive should have a feature to disconnect from door to allow for manual closing.

Posted on Jul 15, 2009

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1 Answer

Garage door will not close from remote or car. Garage door will open from remote or car; however, it will not close using these controls. The only way I can close the garage door is to press on the manual...


Try reprograming the opener to each remote, if this doesn't work then the command/radio module in the opener is damaged and needs to be replaced. Hopefully you can find one or you will have to replace the whole garage door opener. Good luck.

Jan 21, 2012 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Waiting to find the specifications that I need to know for a Liftmaster 1245lm professional 1995 garage door to buy a programable keychain remote opener.


The specifications that you need are the model number off the opener. Then check the yellow pages for a Liftmaster or Chamberlain dealer. They will help you in a heart beat.

Dec 21, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have 2 liftmaster 3245. The hand held remotes were working fine then stopped. I replaced the batteries and turned of all electrical/RIF close by. Still not working. Both cars operate the doors with no...


You need to reprogram the remotes by briefly pushing the learn button on the garage door opener until it flashes once, then release the button on the garage door opener.

Now press the remote button once until you hear the garage door opener click, now press the remote button once again and the remote should be programmed to work for that garage door opener.

DO NOT press and hold the garage door opener learn button for more than 10 seconds or you'll erase all programs and have to relearn all the remotes, including your car ones.

Hope you found this very helpful and best regards.

Aug 06, 2009 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Door opened and will not close or open now


Drive should have a feature to disconnect from door to allow for manual closing.

Jul 15, 2009 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Liftmaster pro 1/2 hp wont shut in one button press


You have a door sensor problem. Either your main light bulb is burned out or you don't have one in your opener. The clicking sound you hear is the relay for the light. Both of the door sensors should have a small light that is lit. Tweak them until they are.

Jun 28, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My garage door will not close unless...


Check your down limit switch and even your up one too almost sounds like one is stuck one way or the other.

Jun 19, 2009 | liftmaster Chamberlain Garage Door Opener...

1 Answer

The garage door goes up, but will not go down. i push the opener


Make sure the door sensors are aligned properly. They must be pointed at one another and the small light on each one should be lit and not flickering.

Jun 13, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

The garage door doesn't respond to my automobile system.


it is locked. hold the lock button for about 5 seconds to turn off

Apr 05, 2009 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Garage door not closing all the way


what brand. you described three sensor lights/ Craftsman/Liftmaster have two, Sounds like saftey beam problem,

Jan 15, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Craftsman 1245LM reprogram


The keypad outside has manuals online that you could use, but for simplicity, Have someone go to that back of the machine and press the "Learn" button, once its is pressed, the yellow light should blink. Enter a new code (4digit) into the keypad and press the enter button. You should then hear a click and the lights on the machine should flash. That will program your keypad.

Sep 16, 2008 | Sears Craftsman LiftMaster Chamberlain...

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