Replace Lennox Icomfort s30 with NEST

[CKMAN]

The smart hub on my iComfort S30 cannot communicate with my home wifi. I would like to replace the Lennox iComfort S30 with a new Nest t-stat. Is this possible?

S30 has 4 wires (W, B, Y and Red).  I have pictures and was able to trace wires from S30 to the Iindoor panel on the AC unit.

White = terminates on C

Blue = I-

Yellow= I+

Red = R

[zoeuvre]

Hi CKMAN, 

Thanks for posting here in the Community forum and for showing interest in our Nest Thermostats. Non-standard labels of I-and I+ means that your system is proprietary. Proprietary systems aren’t compatible with Google Nest Thermostats. However, some proprietary systems can be rewired by a pro installer to be compatible.

Let us know if that helps.

Best,

Zoe