Hi @Narendragudha1,
Thank you for your timely post and the comprehensive information with the picture you've provided. I understand that you want to know if your wires are compatible even without the G wire. I'm here to help. In this case, yes, your system is compatible with our Nest thermostat, as shown in the picture you sent. Just to let you know, for the installation process, it is not essential to connect the jumper between the RC and RH wires.
You can also check compatibility through our compatibility checker. Important: Before touching any wires, turn off the power to your HVAC system at the breaker box. Here's a helpful picture for reference on how to install your Nest thermostat.
You may also check out the model of our thermostat, which is available on the Google Store.
Please keep me posted.
Warm regards,
Jeremy.
