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. 7 }5 m) o8 j5 t 6 u2 A. K/ a7 P) ?8 ]. V/ }3 j( t2 ^% \The sensors are located on each side of the garage door. You can manually adjust to make them align.& A8 A8 W1 }+ x9 a7 I+ y2 z, L
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My husband did exactly the same thing and fixed the issue.2 \) Q% F( ?: E9 ?0 n
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Hope this will help you bit. Sorry. I can't type in Chinese now.