Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC

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My garage door will not close unless...

My Liftmaster garage door opener will not close unless I am holding down the hard-wired button, remote control button or key pad button. If I release the button, it immediately goes back up, however, once it is closed all the way it will remain closed. The lights in the front of the motor flashes and clicks three times when I push the button to close the door as usual; and it do not close. When I'm holding down the button to close the door it goes down slowly. I need your help! Thanks!

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

Posted on Jun 19, 2009

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Garage door won't close unless I hold down the wall button until it is fully closed. Checked the L.E.D light at motor and it flashes 2 times in about 8 seconds. Sensor with amber light is on, other does...



WHEN HOLDING IT DOWN MAKES THE DOOR CLOSE PROPERLY THE PROBLEM IS IN THE SAFETY EYES.


CHECK FOR A LOOSE OR BROKEN WIRE.

ARE THE EYES WIRED CORRECTLY?

ARE THEY AIMED AT EACH HOLDING DOWN THE WALL BUTTON OVERRIDES THE SAFETY EYES.

Oct 09, 2010 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Have sears garage door opener it lifts allright but cant close unless you hold the wired pad. works ok up with the remote just jumps a little when you push down button will not close with remote.


Check your door sensors and make sure they are pointed at one another. Each of them has a small light that should be lit when they are properly aligned. Tweak them if necessary. If you can't get both lights to come on then one of the sensors has quit working.

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

1 Answer

My garage door won't close unless I hold the main button down in the garage. As soon as it closes it opens up again unless I press the button quickly. I can open it up using the remote, but cannot close it...


your garage door has saftey sensors at the door
these are photo eyes
in the owners manuel that came with the opener
that has pictures in it which would help
the photo eyes need to be clear of debri and aimed at each other with no obstruction
there are leds on each sensor and when aimes properly they should be light if i remember correctly
if you can not get them to light then you may have to replace the sensors

Oct 27, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Door won't close unless I hold the button all the way down.


make sure the eyes are clean and aligned if the opener thinks something is obstructing its path it will not close

Oct 07, 2009 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Liftmaster security+ garage opener opens okay and refuses to close with remotes. Makes clicking sound.


HOLDING DOWN THE WALL BUTTON OVERRIDES THE SAFETY EYES.
WHEN HOLDING IT DOWN MAKES THE DOOR CLOSE PROPERLY THE PROBLEM IS IN THE SAFETY EYES.

ARE BOTH LEDS ON? - CHECK FOR A LOOSE OR BROKEN WIRE.
ARE THE EYES WIRED CORRECTLY?
ARE THEY AIMED AT EACH OTHER?

Mar 14, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Sears craftsman garage door opener


HOLDING DOWN THE WALL BUTTON OVERRIDES THE SAFETY EYES.
WHEN HOLDING IT DOWN MAKES THE DOOR CLOSE PROPERLY THE PROBLEM IS IN THE SAFETY EYES.

ARE BOTH LEDS ON? - CHECK FOR A LOOSE OR BROKEN WIRE.
ARE THE EYES WIRED CORRECTLY?
ARE THEY AIMED AT EACH OTHER?

Jul 13, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

When remote or door switch is pressed the garage door opener only clicks, the motor attempts to move very slightly. starting capacitor is new.


SOUNDS LIKE A SAFETY EYE PROBLEM.

WILL IT CLOSE IF YOU HOLD DOWN THE WALL BUTTON??

HOLDING DOWN THE WALL BUTTON OVERRIDES THE SAFETY EYES.
WHEN HOLDING IT DOWN MAKES THE DOOR CLOSE PROPERLY THE PROBLEM IS IN THE SAFETY EYES.

ARE BOTH LEDS ON? - CHECK FOR A LOOSE OR BROKEN WIRE.
ARE THE EYES WIRED CORRECTLY?
ARE THEY AIMED AT EACH OTHER?

Jul 09, 2008 | Sears Craftsman LiftMaster Chamberlain...

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