My garage door has the same problem. I phoned Barcol and the guy told me it is a easy fix. Usually because the two sensors above the ground are not in alignment.9 ~; N$ _, e8 z, d4 }
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The sensors are located on each side of the garage door. You can manually adjust to make them align. . u3 v7 m5 @% w, k% k5 z* A1 t- W9 S, ^ A; y
My husband did exactly the same thing and fixed the issue. * p8 @1 N4 E, U N ^3 ? - b+ x0 r6 q2 f) }# q) dHope this will help you bit. Sorry. I can't type in Chinese now.