Thermostat wiring diagram with 5 wire

[phil22]

Hi there looking for some help wiring a 3rd gen nest thermostat 

I don’t have a old thermostat to work off I have a picture of the fau that was wired before also has a heat pump thanks in advance

 

[CoolingWizard]

OK do you see the red and white wire that’s going off to the left side? That is going to the outdoor unit to turn on the compressor however, there’s no wire there for the heat pump reversing valve.  The other cable is from your thermostat you have a red wire on R, a green wire on G, a white wire on W, a yellow wire on Y, and a blue wire on C.

. Then there is a brown wire that’s not being used. In order to install that heat pump they would’ve had to install a new thermostat cable between the furnace and the outdoor unit which had at least three conductors. What goes out there is a common, and a Y wire, and when they need to switch the mode, there will be a wire going from O/B.  

The AC Cooling Wizard

do you need to do is go get another picture of the furnace now that the heat pump has been installed.

The AC Cooling Wizard

[Markjosephp]

Hello folks,

I wanted to ensure that everything was covered here.

Thanks for the input, @CoolingWizard.

@phil22, I hope you've found the answer you're looking for. How's it going? Have you managed to check your system control panel as advised by CoolingWizard?
If you're still in need of assistance, feel free to let us know.

Regards,
Mark

[Dan_A]

Hey there,

I wanted to follow up and see if you still need help. Please let me know if you are still having any concerns or questions from here, as I would be happy to take a closer look and assist you further.

Thanks,

Dan

[Dan_A]

Hey there phil22,

We haven't heard from you in a while so we'll be locking this thread if there is no update within 24 hours. If you need assistance or want to discuss topics, feel free to start a new thread.
 

Cheers,

Dan