Quote:
Originally Posted by Foxmd
I have a flashing green light and the garage door hums but won't go up or down.
How do I fix a stuck open limit problem?
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First, check that nothing is blocking the photobeam. There should be two small boxes, one on each side of the garage door, near the bottom. Make sure they are lined up correctly. I hit one of these with a package once and my garage door wouldn't work until I got it lined up.
Here's a link to the manual if you have an Allstar MVP opener.
http://www.linearcorp.com/pdf/manuals/112319EX1.pdf
Page 16 shows how to adjust the open and close limits.
According to the troubleshooting, FAST green blinking light ...photobeam is blocked and a SLOW green blinking light is open limit problem.