Originally Posted by ImpulseRed008
Don't think I have one... I"ll check on line. So why will it work when it's warm out, but not when it's cold?
I wish that was the issue. My "issue" is the temperature.
sensors are fine - green light
Sounds like the 'Electric eye' sensors (1 of 2 safety reverse features) are working as intended, and like the resistance safety reverse feature (2nd of the two reverse features) needs adjusting.
What kind of opener is it?
Regardless, look for little adjustment knobs on it that you would adjust with a flathead screwdriver. (There may be two pairs in differing locations, such as side and top, or undera hinged front plastic hood, depending on the type opener)
You are trying to decrease the downforce.
There will usually be arrows that get point in a rounder direction around the knobs, either in a 'increasing' or decreasing' direction, with a small diagram showing whether that knob applies to the upward or downward movement of the door.
When in doubt, mark the present locations of each knob so you can return the knob to that setting if need be.
When you determine the right knob to decrease the downward force, try it at half a turn and try the opertaion. If you need to go an addiitonal 1/4 turn, try that.