Okay, last September I bought a house. Yea, me. It has a garage door with garage door opener. Yep. Everything seemed to be working fine.
Then this spring, the door started displaying an odd problem. Every once in a while, it wouldn’t close properly. Instead, it would appear to trigger the safety feature and reverse. I did some troubleshooting, and discovered that it only seemed to occur when it is particularly hot. I haven’t mapped a temperature or thermal profile, but it will happen in the heat of the afternoon, but work fine later that evening.
It is clearly the safety trigger. I disconnect the door and the chain drive runs normally. I can manually open and close the door without resistance. But trying to operate the door will get stuck where it just reverses to open.
I have looked at the door rails and they do not appear to be loose or bent. I can’t sense anything wrong with the door mechanism.
I want to know what I can do to fix it. I mean, I can disconnect the door every time this happens and manually close it, but that defeats the point of having a door opener.
I know the reverser is supposed to be able to be set differently. I think that is what the previous owner did. I do have the manual. But it specifically says you should set the door for a certain amount of sensitivity as a safety feature. The point is that if the door hits an obstruction (say, a child), it should reverse rather than continue to go down and crush the obstruction. So setting the sensitivity of the sensor lower will allow the door to close, but also mean it is less safe.
Any ideas on what I can do?