I replaced the sprocket on my garage door opener several weeks ago. The opener worked well for several weeks after that, however, now the door reverses during the down cycle. The opener lights do not flash and there is no visible obstruction. The garage door is a one-piece door. Now when initiationing the the close cycle the 'straight door arm' is abruptly forced to one side and the garage door bucks (moves significantly from side to side in the up position) and the close cycle stops. I haven't changed any of the 'limits' since installing the new sprocket. And I am hesitant to change the limits without some more information about why the door can't close. Any ideas what is creating this problem?
- posted
17 years ago