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. 9 `) v" _ u9 j 9 _8 r; a+ n7 J# A+ @- K& DThe sensors are located on each side of the garage door. You can manually adjust to make them align. 2 M" D! @) W6 _% c3 }# N9 a$ z5 i- W
My husband did exactly the same thing and fixed the issue. 2 G* y/ [" L2 u$ f4 H, E2 M5 A% | : Y% u8 f% C( @3 K' [' h& O7 {) kHope this will help you bit. Sorry. I can't type in Chinese now.