More wires then needed

[johnwargo]

My existing heat pump thermostat has connections labeled: 

• Rc
• G
• Y1
• O/B
• C
• W1
• W2

It looks like the wire inserted in the W2 slot is labeled Y2. 

W1 has white

O/B  has what looks like orange

What do I do here?

[Patrick_Caezza]

Post a picture of your current thermostat's wiring here

[johnwargo]

no permission to upload images. 

[johnwargo]

 

[johnwargo]

@Patrick_Caezza does that pic help?

[Patrick_Caezza]

Yes, it does.

Your system is only compatible with the Nest 3rd Gen Learning Thermostat.

Try this wiring

Red - Rc to Rc

Green - G to G

Yellow - Y1 to Y1

Orange - OB to OB

Blue - C to C

White - W1 to W1

Brown - W2 to W2/AUX 

[Ryan_G]

Hey folks,

Thanks for visiting the Google Nest Community. 

Since this thread hasn't had activity in a while, we're going to close it to keep content fresh.

If you have additional questions, feel free to submit another post and provide as many details as possible so that others can lend a hand. 

Hope this helps!

Kind regards,

Ryan