EWC Controls Forum

Now that I purchased the NCM-300, I'm wondering what to do with the o and b wires from the old st series since the ncm has an o/b hookup. Any advice would be appreciated. Thanks!

Hi Patrick -
How do I determine if I have a 1 or 2 stage compressor? How much do you sell both panels for? I tried calling customer service, but I constantly get a bust signal.

Thanks,
Brad

Hello - I am looking at thermostats and considering the Nest. I too have the EWC-ST control panel. Will the Nest work with that panel? If not, what control panel would be operable with the Nest in both of my zones, 1 and 2?

Thank you,
Brad