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.; B7 ?5 L# y4 Y) X
2 s3 ^7 C& i, d8 I; v2 nThe sensors are located on each side of the garage door. You can manually adjust to make them align. $ S; B) K6 F! P+ v2 z' g + _4 k" n0 H, i F f8 ZMy husband did exactly the same thing and fixed the issue.0 s! D. K- `" Y3 Y* ]4 w- t
( k q* X& t' i; I" ^2 wHope this will help you bit. Sorry. I can't type in Chinese now.