Mystery Wire that Google Nest doesn't like

[mariafino]

Hi!

I recently got a Nest Learning Thermostat and am attempting to make the switch on my own. I have some electrical knowledge but this problem has me stumped. Hope one of you can help!

The house was set up with a Braeburn thermostat and the wiring looked like this:

Rh - jumpered to Rc

Rc- red wire

y1 - yellow wire 

g - green wire 

W1/E - brown wire 

W2 - white wire 

O-orange wire

B-nothing

C- blue wire

I made the switch but kept getting the error message that the brown wire seems to be in the wrong place, specifically saying  can only have one aux input ( W1 and W2 ). I'm not sure where else to plug that brown wire though and I don't want to just leave it hanging (or blow up my house by just plugging it into a random port lol)

I dug through the forums but I couldn't find my specific issues so fingers crossed one of you experts can give me some recommendations!

Thank you

Maria

[JsmithFin]

I'm running into the same kind of problem!

[ByronP]

Hi Folks,

Thank you for posting here in the community. I'm sorry that you have some inconvenience connecting your wires, especially with the brown ones. I understand how frustrating it can be when you attempt to install something only to encounter an error message. Help's here.

Please review this good article to identify a thermostat wire. There are a few options and guidance to help you out to connect properly the wires.

Let me know if you need more assistance.

Regards,

Byron