Question about Building Materials
Garage door opens manually all the time, even when down and when the red cord has not been pulled.
Posted by Anonymous on
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Posted on Jan 02, 2017
your infrared sensor is either misaligned, faulty, or you have a broken wire from your sensor to your door opener. (Flashing light indicates infrared light path is broken). both sensors should indicate green led. door wil not come down is safty feature to prevent door from closing when light path is broken.
Posted on Jan 16, 2009
If you go to this site you will find the installation manual for a Craftsman opener. The installation will be the same as yours. It is a pdf file.
Posted on Feb 15, 2010
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