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. & N/ [/ r7 A/ o+ m/ `- Q( M+ x) K0 u( s8 c" s, k) d, ?
The sensors are located on each side of the garage door. You can manually adjust to make them align.5 ]5 b* S) m: p/ B9 w
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My husband did exactly the same thing and fixed the issue. ) { ?) I6 }# ]& p0 ^ 9 K$ \& P$ i5 @9 K0 @* d0 \Hope this will help you bit. Sorry. I can't type in Chinese now.