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Our LiftMaster garage door will begin to go up or down when we push the control but will stop. We have to push the control up to 20 time to finally get the door open or close
Re: Our LiftMaster garage door will begin to go up or...
Sounds like you may have a broken door spring. Also I would remove the cover and check the drive gear. It is a white nylon gear just in front of the motor and may be going bad. If it is it will be obvious.
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Check the resistance down button (There is one for down and another one for up). You may need to adjust the sensitivity. That way even if for some reason the have hard time coming down, less sensitivity may solve that issue.
Anytime the main light flashes 10 times and the door reverses to the open position it is a door sensor problem. Make sure they are pointed at one another and the small light on each one is lit and not flickering. If you cannot get both lights to come on you have bad sensors.
THERE IS A SQUARE BUTTON ON THE END OF THE UNIT. PUSH AND RELEASE THEN PUSH AND HOLD THE REMOTE BUTTON FOR ABOUT 20 SECONDS. THE NEXT TIME YOU PUSH THE REMOTE THE DOOR SHOULD GO.
The sensors have nothing to do with your door opening. First thing to check are the door springs. One may be broken. Next remove the cover and check the drive gear. It is a white nylon gear just in front of the motor. It may be stripped.
You have a door problem. The reason the door is reversing to the open position is because when it bucks the safety senses something wrong. Release the door from the opener and operate it by hand. You should find something.
LIFTMASTER OPENERS HAVE A SQUARE BUTTON ON THE BACK PANEL. PUSH THE BUTTON ONCE AND PUNCH IN THE CODE YOU WANT ON THE KEYPAD - YOU ONLY HAVE 20 SECONDS - THE NEXT TIME YOU PRESS ENTER IT SHOULD OPEN/CLOSE THE DOOR
why does it go up or down a foot then stops, we have push remote or button at least 6 times before we can finally get it to go up. It is a craftsman 1/2 also
try adjusted the sensor controls on the sode of the unit other wise replace the logic board http://www.chamberlain-garage-door-openers.com/circuitboardcompatibilitychart.htm
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