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.1 c6 ~: |9 }" E* D5 a& }- {
6 R6 G+ |9 Y) l% K2 n; [+ wThe sensors are located on each side of the garage door. You can manually adjust to make them align.! P) G6 S( d5 N- X
! n* N) }1 M$ A& Y jMy husband did exactly the same thing and fixed the issue.- l: M- I( I- z3 c. h3 e
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Hope this will help you bit. Sorry. I can't type in Chinese now.