Hot take: That weird trick with the governor spring tension actually fixed a phantom door fault.

Had a 15 year old Miconic in a downtown office building that kept throwing random door zone errors, even after replacing the photo eyes and adjusting the clutch. On a total whim, I backed off the governor spring tension by about a quarter turn, just to see. The fault cleared and hasn't come back in three weeks. Has anyone else found that over-tensioned safety components can cause weird electrical gremlins?

3 comments

3 Comments

wright.drew1mo ago

Two years ago my buddy's truck kept dying at stoplights until he backed off the alternator belt tension a hair. Sometimes things just stop working right when you tighten them past the sweet spot, like that one drawer in every kitchen that gets harder to open the more you shove stuff in it.

coleman.karen1mo ago

Had a similar thing with an old Dover. Kept getting a car stop error on the top floor. Tried everything, even swapped the limit switch. Finally just loosened the terminal screws on the top floor hall button and re-tightened them. The fault went away for good. Sometimes it's just a bad connection fighting the safety circuit.

sagesingh1mo ago

Man, that's wild. I've seen a tight governor spring mess with the encoder feedback on a hydraulic once. The safety circuit was reading the door zone signal, but the spring tension was making the governor switch chatter just enough to confuse the board. It's like the system was getting two different speed signals.