topic Re: Nest Learning Thermostat Compatibility Help in Nest Thermostats

Nest Learning Thermostat Compatibility Help

StitchinQween — Thu, 19 Oct 2023 12:58:06 GMT

Hello! I would like to replace a Lux 1500 thermostat with a Nest Learning thermostat, and the compatibility checker says it "may be compatible". I have wires connected to G, Y (although this is a blue wire labeled Y), W and R with a jumper between Rh and Rc. Forced air gas furnace and central air. Can I use the learning thermostat and how would I wire it? Thanks in advance!! @CoolingWizard

Re: Nest Learning Thermostat Compatibility Help

CoolingWizard — Thu, 19 Oct 2023 20:16:14 GMT

@StitchinQween , as you stated, your wire in use are:

Rh/Rc , Y, G, W

Do you have and spare or unused wires in your thermostat cable? I ask this because the Nest Learning Thermostat has only an internal battery and have a C wire is best.

AC Cooling Wizard

Re: Nest Learning Thermostat Compatibility Help

StitchinQween — Thu, 19 Oct 2023 20:31:35 GMT

No unused wires that I can see. It's kind of a jumbled mess and I didn't want to jiggle them too much.

I misstated before...The red wire is connected to RH and there is a black jumper between RH and RC.

Re: Nest Learning Thermostat Compatibility Help

CoolingWizard — Thu, 19 Oct 2023 21:22:03 GMT

@StitchinQween , that is ok, just choose the Nest Thermostat model you want to use. And I will be available to help if needed.

AC Cooling Wizard

Re: Nest Learning Thermostat Compatibility Help

StitchinQween — Fri, 20 Oct 2023 12:34:57 GMT

Thank you!