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Photo for compatibility question

vcho
Community Member

Can’t post photo but have the following:

G, C, R, W1, Y on the left

L, W2, E on the right 

Current thermostat is a Honeywell T8411R. 

9 REPLIES 9

Jenelyn_O
Community Specialist
Community Specialist

Hi vcho,

 

Thanks for checking with us the compatibility of your system to the Nest Thermostats. Your system is compatible with the Nest Learning Thermostat. Your L wire which is designated for indicator light on your old thermostat isn't necessary for Nest Thermostats, so you can just leave it disconnected. 

 

Please let me know if you still have questions or concerns, as we'll be willing to help you further.

 

Best,

Jenelyn

Neelmo
Community Member

Jenelyn_O
Community Specialist
Community Specialist

Hi there Neelmo,

 

It looks like you have a heat pump system. I'd like to take a closer look at it. A few questions: in what country are you located? What is the make and model of your heat pump system? Please take a photo of the wires connected to your system's control board. Ensure that the labels of the wires are visible. 

 

Regards,

Jenelyn

Neelmo
Community Member

I'm in America. Model: American standard twe018c140b0. I photographed the wires that go to the thermostat. What other wires are needed? 
I'll try to see what's inside. But I don't see any markings on the outside.

vcho
Community Member

Thanks Jenelyn, would it be compatible with the "Nest Thermostat"?

Neelmo
Community Member

Let's go in order again. Here's the thermostat itself.

IMG_20231130_122635.jpg

 

IMG_20231130_155119.jpg

Fmerican standard twe018c140b0
I didn't see a board inside, just wires and a circuit. Photo below:
IMG_20231130_154613.jpgIMG_20231130_154607.jpgIMG_20231130_154631.jpg

The pump you are talking about is probably Em.Ht. emergency heating system.

zoeuvre
Community Specialist
Community Specialist

Hi folks,

 

@Neelmo, chiming in—your thermostat wires are fortunately compatible with Nest Learning Thermostat 3rd generation and should be wired to the Nest Learning Thermostat base as shown: 

 

 

The F terminal from your previous thermostat is usually a heat-anticipator wire and will not be needed. The X2 terminal, on the other hand, is your emergency heat and should be connected to the Nest Learning Thermostat's * terminal. Also, here's a guide for the installation and setup of a Nest Learning Thermostat.

 

Let us know if you have any other questions.

 

I appreciate your help, Jenelyn. 

 

Thanks,

Zoe

Neelmo
Community Member

Thank you Zoeuvre!

zoeuvre
Community Specialist
Community Specialist

Hi all, 

 

@vcho, your thermostat wires are compatible only with Nest Learning Thermostat 3rd generation since you have primary and auxiliary heat. The wires should be connected to the Nest Learning Thermostat base as listed below then follow the instructions here for the for the installation and setup of a Nest Learning Thermostat

 

  • G to G
  • C to C
  • R to RH
  • W1 to W1
  • Y to Y1
  • W2 to W2 AUX
  • E to *

 

@Neelmo, you're welcome! If you have questions or concerns in the future, feel free to start a new thread, and we'll be happy to help.
 

Let us know if that helps.

 

Kind regards,

Zoe