EWC Controls Forum

Thanks a lot Stephen. Installed the thermostats today and tested all the functionality. They work great. Turns out the blue wire was available so all I did is connect it to the C terminal at both ends. Thanks for the advice.

Thanks Stephen. If I want manual control of the fan (to say circulate air 15min/ hr), which I believe I will lose if I use the G wire as C, can I use the blue wire and connect C on the thermostat to C on the zone controller? My understanding is that the dedicated 40VA transformer has enough power to ...

Hi,

I’m trying to replace the existing thermostats with Ecobees on a zoned system. When I looked at the wiring at the thermostat, there were four wires (W, R, G, Y), no C wire though. Looking at the zone controller the C terminal is empty on the Zones 1 and 2 Tstats. There appears to be an extra ...