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. ! k" Q0 X4 l* B( W3 D, @: L6 G: F9 C+ Z
The sensors are located on each side of the garage door. You can manually adjust to make them align. 4 k% N) p5 T' ?3 l# m2 x- o 2 p% N9 x. s$ E/ s0 A# EMy husband did exactly the same thing and fixed the issue.2 v& L C1 Y! D2 m9 U
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Hope this will help you bit. Sorry. I can't type in Chinese now.