Why is my thermostat wire different than the other two?

[Alexmaz71]

I have three thermostats in my house. I purchased 3 nest thermostats I changed 2 with no problem went to change the third one. There was wires connected where the other two didn't have any don't know what they are for somebody. Please tell me what these wires are on the left side of my thermostat.

 RS2. RS1. RS+V 

[CoolingWizard]

Hello Alex,

the RS terminals are for an outdoor or indoor remote temperature sensors. They can be ignored as they will not be needed or used by the Nest thermostat.

Ken, The AC Cooling Wizard 

[Alexmaz71]

So I can go ahead and use those wires on the right side and connect them to my new nest thermostat you say ignore the RS wires. What should I do with them? Push them into the wall thanks for your help. I've been trying to figure this out for three days.

[CoolingWizard]

Alex,

If you have enough slack in the cable, pull it out a few inches and wrap the unused RS wires around the cable itself and slide the cable back in the hole in the wall.

Ken, AC Cooling Wizard 

[Jake]

Hey there,

Thanks so much for the help CoolingWizard.

I wanted to check in and see if you managed to see CoolingWizard's post. Please let me know if you have any questions from here. I would be happy to assist, and make sure you are good to go.

Best regards,
Jake

[Jake]

Hey there,

I wanted to check in 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.

Best regards,
Jake

[Jake]

Hey there,

I wanted to check in, and let you know that I will be locking the thread in 24 hours.

Best regards,

Jake