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.5 M) z# B6 V, B/ R, Y, H0 f' o
( K: s: @- \ K1 @$ z( M# ?The sensors are located on each side of the garage door. You can manually adjust to make them align." a) G3 Q& E3 G6 n
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My husband did exactly the same thing and fixed the issue.1 S! l" P% t6 a* I* i# |4 w
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Hope this will help you bit. Sorry. I can't type in Chinese now.