Existing W2 and W/E help

[Dtc13]

 

I have a heat pump and am trying to sort out where to connect the old W2 and W/E wires to the new Nest. 

I will attempt to upload a picture of the existing config. 

[CoolingWizard]

@Dtc13 ,

You have a heat pump with Auxiliary Heat and Emergency Heat.  Your Red Wire goes to Rh. Your Orange wire goes to *OB, the yellow wire goes to Y1, you have a brown wire going to G , and a second brown wire going to Y2.  Put the G brown wire on G and the Y2 brown wire to Y2.  The White wire goes to W2/AUX.  this is your Auxiliary Heat.  The brown wire in W2 goes to the W2/Aux and the white wire goes to the * terminal and will be defined as Emergency heat. 

The AC Cooling Wizard

If my response helped you understand better, tap that Kudos Button, if my answer solved your problem then tap that “recommend this Answer”. 

[jaylamelnik]

Hi DTC13, did you get your nest setup? My heat pump inverter system thermostat is wired the same.  I am wondering were the brown wire in w2 goes and white in w/e should connect for nest 3. How did you do it? Also is your system single fuel (electric)?

[Dtc13]

Yes, I have a single fuel electric heat pump. I ended up with a different wiring configuration that what was suggested. I had to have an HVAC guy come out because I was having trouble with the heat. I’ll get a picture tomorrow and upload it showing where the W/E and W2 wires got placed into the Nest. 

[Dtc13]

Here is a photo of how it ended up being wired in the Nest. 

[Dtc13]

 

[CoolingWizard]

@Dtc13 ,

They you currently have your Google Nest Learning Thermostat wired is the W1 is condisered Duel-Fuel.  The Emergency heat ( the white wire) should be on the “*” terminal.  

The Cooling Wizard