VisionPro IAQ wiring question
I have a Ruud furnace and Heat pump connected to a VisionPro IAQ thermostat.
I have built a series of 24V relays that will switch W2(aux heat) from the gas furnace to a bank of relays that control my electric base board heat.
The system is working quite well and my question is where should I be hooking the ground side of my 24 V relay. I have the hot side on W2 and have tried the ground side on both Y and C . I currenty have it on C and have noticed that under some curcomstances the Electric heat has came on when the thermostat reads "heat on". It should only come on when the thermostat reads "aux heat on".