LA400 DIAGNOSTIC FLASH 2
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LA400 DIAGNOSTIC FLASH 2
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09-06-2014, 07:26 PM
My LA400 liftmaster gate arm stopped opening. When using remote alarm goes off. Checked diagnostic in control panel - flashes twice - manual shows this to be arm disengaged. I've checked voltage on battery and is good. Nothing looks bad in control panel. Guessing a switch inside arm is not working. Any suggestions on troubleshooting problem before I go through effort of changing motor with siwtches?
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LA400 DIAGNOSTIC FLASH 2 - by SAA - 09-06-2014, 07:26 PM
RE: LA400 DIAGNOSTIC FLASH 2 - by Blakey111 - 11-06-2014, 09:22 AM
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