Loading…
-1
Vent: The old Otis 411s I used to work on in downtown Phoenix are nothing like the new gearless units.
Back in the early 2000s, those 411s had a machine room you could walk around in, with a big motor and a separate drive. Now, the new gearless jobs in the same buildings are just a compact unit in the hoistway, and the controller is all software. It's cleaner and takes up less space, but troubleshooting feels like you need a computer science degree half the time. Anyone else miss being able to physically trace a relay logic circuit?
2 comments
Log in to join the discussion
Log In2 Comments
robertb306mo ago
Yeah, now you need a software update to fix a squeak. (And a guy in a polo shirt to charge you two grand for the privilege.)
6
adam_butler386mo ago
Tell me about it. My buddy does HVAC in some of those same buildings and says the same thing. He opened a panel on a new air handler last week and it was just a single board with a tiny blinking light. The whole thing felt like a black box. At least with the old stuff, you could smack a relay with a screwdriver and sometimes get another year out of it.
0