LiftMaster 8550 Support Question
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Question posted by yazminnadal on June 22nd, 2017
How Do I Repair Error Code 42
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Answer #1: Posted by Odin on June 22nd, 2017 5:41 PM
This reflect an improperly adjusted closing force. See http://homeguides.sfgate.com/troubleshoot-garage-door-opener-closing-force-probably-needs-adjusting-38929.html.
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