Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC

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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 control inside the garage until it is completely close; otherwise, it will stop as soon as I quit pressing. It is the Chamberlain Liftmaster Professional Formula I model.

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Check the safety photocells is theres not obstacle between then, check both photecells leds are on.. otherwise no need to replace them

Posted on Mar 15, 2009

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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

  • Mark Belanger Dec 25, 2012

    I have the same exact problem. I believe it is related to the sensors that determine if anything is blocking the door closure. I'm trying to figure out how to adjust those so they are aligned properly rather than giving false signals that something is in the way and stopping closure.

  • Susan Fierros
    Susan Fierros May 13, 2014

    I have this same problem. Does anyone have a solution yet?

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SOURCE: Garage door will open from remote or car;but wont close,only closes by inside wall unit

Something could be blocking the electric eye.they are down at ground level on both sides of the door

Posted on Jan 09, 2012

mcgiveral
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SOURCE: 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 ma

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.

Posted on Jan 21, 2012

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