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. : p7 Z0 @- _2 I9 t ) ?* _9 V; x& `" K. eThe sensors are located on each side of the garage door. You can manually adjust to make them align.- T* p$ Q7 a% n. G* q, p+ u
i/ v8 p& q4 G" G. q4 Q* X; [0 EMy husband did exactly the same thing and fixed the issue.& k1 p% M P+ Y
( _1 H, n/ d. HHope this will help you bit. Sorry. I can't type in Chinese now.