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Garage door closes erratically

Posted by lowellches (My Page) on
Sat, Oct 12, 13 at 15:28

I have 3 single garage doors with 3 Sears openers. Two openers close correctly. The third opener has periodically caused the door to hit too hard and reverse. I adjusted it per instructions in the manual but after a while it would happen again.

In order to stop the problem: I adjusted it so that it stopped slightly above the floor leaving a small gap. That worked for the past several months - but just now when I came home the door hit the floor with a bang (surprised it did not reverse) and stayed against the floor.

I am wondering why it changes. Any thoughts?

Follow-Up Postings:

RE: Garage door closes erratically

Same as above, after many closings stopping just above floor - it again started hitting floor too hard and reversing. It did the bang/reverse 3 or 4 times. Then closed nicely with a small gap.

So why does it close further sometimes than other times?

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