You know, having the pushers come on only when the manual override switch is on really should be the default configuration from ERA. The current in-rush when the thermostatic switch is configured to operate all three fans is pretty high. Unnecessarily high. It's all going through that one Bosch relay and all pegging the ammeter from the rush. I think it's a flaw in the wiring scheme -- but it's easily fixed. It was a pretty easy job when I did it to mine, so it's a piece of cake for them to do it for you up front on the build. Remember, they'll do just about anything you ask them to... you just have to throw some money at them.