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. 2 \8 Y* r2 M0 @' B6 V, B. _* W; r5 J, j8 N' ?- U( B
The sensors are located on each side of the garage door. You can manually adjust to make them align. 6 `- J' n% y/ m _3 W5 ~7 ^0 k0 n& {, r
My husband did exactly the same thing and fixed the issue. ) v& e* `. |2 e9 v+ t" q$ z 8 v5 Z4 M" ?2 _+ j5 AHope this will help you bit. Sorry. I can't type in Chinese now.