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I have a Liftmaster garage door opener and the garage door faces south. Normally the opener works great except at certain times on a sunny day.The sunlight is not directly hitting one of the sensors but the door will comedown as far as half way and then it will go back up and the lights will flash. If I go inside and use the button I can hold it down until the door is fully closed. However, sure is a pain to have to take the car out, go back into the garage, shut the door and then leave the house via another door. Any idea on either what the problem is or how to fix it?

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Sounds like a problem with a limit switch or something getting in the way of the electric eye that interrupts for safety reasons. Clean the electric eye transmitter and sensor of debris and cobwebs and make sure the wires are attached properly. Check the operation of the lifting media track or chain. Has it been lubricated recently? If possible, clean the switch in the transmitter in the car, it may be shorting out.

Posted on Aug 29, 2010

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Posted on Jan 02, 2017

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