I'd like to be able to run my furnace fan without the ac compressor on, every other house i've been able to do this. I've tried 3 different thermostats and on any of them if i turn 'fan' on the ac compressor turns on also.
I've traced the wiring and everything appears right. The fan control (g) is connected and not jumpered to anything. Why would the ac compressor turn on when activation is sent down the green wire?