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.8 c" z" h) t0 E4 D' W4 l
# [/ q. s' W P* U6 CThe sensors are located on each side of the garage door. You can manually adjust to make them align.4 O( S' |5 `' P9 X2 r
+ q9 M9 W4 U9 |/ y! g2 r5 Z1 _My husband did exactly the same thing and fixed the issue.0 Y! ` T9 s# A6 W2 T, {3 e
, J- J; T- @( c; `) rHope this will help you bit. Sorry. I can't type in Chinese now.