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Why does my garage opener light flash 3 times and click 3 times, but the door will not go down when I push the wall unit button?

I have a Craftsman garage door opener. The model # is 139.53925DS I am also wondering if both sensors at the bottom of the garage door need to glow green or can one side glow green and the other side orange? I am trying to understand why my garage door light clicks 3 times and flashes 3 times and the door will not go down. If there is a short in the wiring, where do I look?



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Craftsman , Garage Door Openers , Ranges , Appliances
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2 Answers from these members:
Manage My Life
by Manage My Life
April 7th, 2010
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Manage My Life
by Manage My Life
July 11th, 2011
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