Error E257 - I have 4 wires - red, green, white and blue - no yellow.

[Janelise49]

I am getting error E257. I only have red, green, white and blue - no yellow. I plugged the blue into the C receptical.

What am I doing wrong?

[EmersonB]

Hello Janelise49,

Thanks for reaching out and for sharing this information. A few questions: who installed your Nest Thermostat? How long do you have it?

Give these steps a try:

• Reseat the wires.
• Remove your Nest Thermostat from your Google Home App.
• Reset your Nest Thermostat to the factory default.

Keep me posted.

Regards,
Emerson

[Dan_A]

Hey there,

I wanted to follow up and see if you still need help. Please let me know if you are still having any concerns or questions from here, as I would be happy to take a closer look and assist you further.

Best,

Dan

[Janelise49]

Hi - the issue is resolved.  An HVAC person had to do some rewiring.  Thanks for the follow up.

[Dan_A]

Hey there,

Awesome — glad to hear that your issue is fixed. It looks like we can consider this one complete, so I will lock the thread in 24 hours unless I can help out with anything else. 

Regards,

Dan