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.! J& g6 ?9 M/ T8 y6 n
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The sensors are located on each side of the garage door. You can manually adjust to make them align. 5 k2 v. x5 |! h U. n' W; f* d0 h2 R; \( t! P
My husband did exactly the same thing and fixed the issue.& S6 B1 ?* P% y& f4 S ?- c$ K2 M
% D/ Y, z4 ]6 w6 d2 X9 M: K. RHope this will help you bit. Sorry. I can't type in Chinese now.