Nest Learning Thermostat

[DanUrsu]

My current thermostat using 4 wires : red, green, white and blue, No other jumper or common wire,,,,

Can i use a Nest Learning thermostat which is using the same 4 wires just instead yellow as i found on your installation video mine use blue wire .  Where  i supposed to connect mine blue wire? To which letter in the Nest thermostat wire diagram?

[HVAC]

Wires need to be connected to same letter designation on the nest sub base mounting plate. So your blue wire that’s connected to Y would be on Y1 on the nest. Might need to charge nest via mini usb on back of it from time to time if C isn’t connected 

[zoeuvre]

Hi folks,

@DanUrsu, thanks for posting here in the Community forum and for showing interest in our Nest Thermostats. 

Please send us a photo of your current thermostat's wiring configuration so we can better determine its compatibility with our Nest Thermostats.

I'll look forward to your response. 

I appreciate your help, @HVAC. 

Best,

Zoe 

[zoeuvre]

Hi there,

I want to check and see if you are still in need of any help. Please let me know, as I would be happy to assist and answer any questions you may have.

Thanks,

Zoe