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. ) R' e# w. U) s1 N: N! t 6 i' V0 I3 y# T- }, K% Y- p: Q% IThe sensors are located on each side of the garage door. You can manually adjust to make them align. - \* r0 C0 ?0 B& F+ L+ ?7 u 4 o5 s. w+ ^' S c: q4 xMy husband did exactly the same thing and fixed the issue.0 M" P9 }0 f9 P# O- I& u
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Hope this will help you bit. Sorry. I can't type in Chinese now.