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Nest Thermostat is offline with error e298

Community Member

My Nest smart stat won’t install. It doesn’t connect and I get a “no power e298” error. I have an older York Diamond80 gas 24volt furnace. Wiring is red with an rh jumper, white to w, green to g and I installed a c-wire using blue to c terminal. I watched a ton of youtube vids which pretty much all said to add the c-wire. I have a Nest Power Connector but didn’t hook it up because I installed the c-wire. Tried all the troubleshooting items and still nothing. What am I doing wrong? Please help.


Community Specialist
Community Specialist

Hey there,


Sorry to hear about the trouble with the device. I wanted to follow up and see if I could be of any help. I found an article with some troubleshooting steps. Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further. 

Best regards,

Community Specialist
Community Specialist

Hi folks,

Chiming in to see if you still need assistance with this. Let us know if you have additional questions ― we'd love to help.


Hi everyone,

Just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, I would be happy to keep it open. If there's more we can do, just let me know.