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. 5 I& b& h* h( t7 q$ B O" o" Y4 D' o/ S* v& |' m9 o6 C0 n
The sensors are located on each side of the garage door. You can manually adjust to make them align.! [. H/ W5 l1 J H0 H' T
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My husband did exactly the same thing and fixed the issue.9 w* }4 {3 y0 j1 c5 n
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Hope this will help you bit. Sorry. I can't type in Chinese now.