Is This System Compatible With A Nest Thermostat?

[dwjones2]

Our new home has a Carrier heat pump system with a RobertShaw thermostat using the following terminals:

RH jumpered to RC, C, O, G, Y, and W/E jumpered to W2

I understand about not needing the RC to RH jumper, but how should the W/E & W2 terminals be wired? I have a Nest E thermostat I received in a promotion, but would be willing to purchase a different model if needed. 

[SoriaD_]

Hello @dwjones2 

Thanks for reaching out to our Nest community about this new installation. I'm so sorry for all the inconvenience. Don't worry, I'm here to help you with it.

With this particular unit, according to our compatibility checker, it indicates that having a second heating station (W2) does not allow it to work with your system. However, you could avoid this with a Nest Learning Thermostat that can work with up to a third station.

You can check our New Nest Learning Thermostat on our Google Store.

Feel free to keep us posting, I'm happy to help you.

Best regards,

Douglas.