I had to do a smoke purge inspection on 5 Trane Intellipaks the other day. What's suppose to happen is with the switch made, the units go into mode "D" on the VOM. The VOM turns on the supply fans 100%, exhuast fans 100%, 100% outside air damper, and 100% on the HW actuator.
I have one unit that won't open the HW actuator. I don't get 10vdc out on the heat module(all the others I do). I made sure the heat module works in the heating mode, but when it is in vent override I get no signal. So I went through the setup parameters. The heat actuator setting in mode "D" is "In Control". The others are the same.
My question is, what is "In Control"? Does that means the VOM is in control of it and it should drive it 100%? Or does it mean it is control of the heating settings?