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. ; z, W" G+ U5 G1 ]7 n: s2 V O9 o- ]1 g
The sensors are located on each side of the garage door. You can manually adjust to make them align.6 y7 A& B! \0 Y5 M/ e' f! I1 e
" s7 d1 |4 C7 G% `: ]My husband did exactly the same thing and fixed the issue. 0 H8 Z L. ^5 ]) K. A % ?' n- O1 t" Z5 c1 hHope this will help you bit. Sorry. I can't type in Chinese now.