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2 wire (R&W) heat only system with 24V transformer

KevinDG
Community Member

Greetings,

I have a 2 wire (R&W) heat only system and a Nest Thermostat. There is an existing 24v transformer in the system. The Nest thermostat is hooked up and working but I am receiving a N260 error and the motion sensing is not working. Can I run a C wire from the existing transformer to the C connection on the Nest thermostat?

 Current wiringCurrent wiring

 

Nest thermostat connections.

Nest thermostatNest thermostat

Old thermostat connections.

Old thermostatOld thermostat

Thanks,

Kevin

3 REPLIES 3

Jake
Community Specialist
Community Specialist

Hey KevinDG,

 

Apologies for the late reply. I wanted to follow up and ensure you are good to go. Please let me know if you are still having any trouble with the wiring of your system, as I understand it can be confusing at times. I would be happy to take a closer look and assist you further. 

Best regards,
Jake

Jake
Community Specialist
Community Specialist

Hey KevinDG,

 

I want to ensure you are good to go, and everything is working properly. Please let me know if you are still having trouble, as I will be locking the thread in 24 hours due to inactivity. 

Best regards,
Jake

Jake
Community Specialist
Community Specialist

Hey KevinDG,

 

It has been a few days since the last reply, and I am going to lock the thread at this time. If you have any questions, please feel free to create a new post. 

Best regards,
Jake