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We have a Liftmaster Pro Formula 1 garage door opener. When we press button to close door it goes down 3/4 of the way then goes back up...one of the sensors is amber and the other is green

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If your lights are bright green and bright amber, and they stay lit even when the door reverses, your problem is the logic board. Unfortunately this model only has a 1 year warantee and the logic boards are almost the same price as the head unit. This is a common problem with this series, it is worth the money to upgrade to unit with a 3 or 5 year warantee. they are rediliy available from HD and others.

Posted on Sep 25, 2009

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It sounds like the sensors arent facing eachother and check the wires were they hook up to the opener

Posted on Jan 08, 2009

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heatman101

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