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 M/ _) m* @( R2 n
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The sensors are located on each side of the garage door. You can manually adjust to make them align. - T, {- f# E0 \3 P1 Z5 W$ d+ ~5 j9 o3 i# p% y. q; [
My husband did exactly the same thing and fixed the issue.( j. D1 V# Q9 b! w/ K6 ?6 I
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Hope this will help you bit. Sorry. I can't type in Chinese now.