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.1 z1 V( e- \$ T1 h C7 S4 I
6 \$ x) s6 P* G8 t0 kThe sensors are located on each side of the garage door. You can manually adjust to make them align. $ b# {8 v8 v G) S8 N4 ?: k , r7 k, l4 F! f GMy husband did exactly the same thing and fixed the issue.2 b1 t! P& ] R
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Hope this will help you bit. Sorry. I can't type in Chinese now.