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That final relay replacement took me 7 hours because of one hidden wire I missed
Had a 1992 Otis in a downtown building that kept faulting on intermediate floor stops, and after swapping the door lock relay, the limit switch, and even the controller board I finally found a single corroded wire tucked behind the main junction box that was causing intermittent shorts, has anyone else spent a full day hunting ghosts like that?
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torres.jason3mo ago
That one hidden wire I missed" should be on a t-shirt for every elevator guy. But here's something nobody talks about - sometimes those ghost faults aren't even electrical. I've seen where a worn out rubber bumper on the door operator, or a tiny piece of debris stuck in the guide rail, causes the same intermittent problem that makes you want to throw your tools out the window. You spend all day chasing wiring when the real issue is mechanical. Next time you're pulling your hair out on a fault that comes and goes, before you swap another board, take a flashlight and look at the physical parts that move. Might save you six hours.
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gavinm893mo ago
Amen to that, mechanical gremlins are way worse than electrical ones most days.
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