Nest thermostat install

House Repair Talk

Help Support House Repair Talk:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Jdeal1

Well-Known Member
Joined
Jan 20, 2020
Messages
119
Reaction score
4
Location
Maryland
Heat pump or not?

I attempted to instal a nest thermostat I noticed I have a wire in the O terminal and from what I’ve read this is for the heat pump. However when I put the wire from the O terminal on the old stat to the * O/B terminal on the nest stat when the heat came on my outside unit came on this never happens and cold air came through the ducts. Sos I select the wrong settings while configuring my nest stat?
Everything points to it not being a heat pump unit but why would there be a wire in the O terminal
 

Attachments

  • 42662568-6001-4E63-82B6-76D1249F5320.jpeg
    42662568-6001-4E63-82B6-76D1249F5320.jpeg
    63.7 KB · Views: 4
Solved the O terminal with the orange wire didn’t connect to the furnace or some reason it was connected at the stat. I have straight AC and a furnace no heat pump the O controls. Reversing valve on a heat pump so the installer just put it in the stat for some reason.
 

Latest posts

Back
Top