Nest Thermostat reading wrong temperature

[WizardEpidemic]

The first generation nest thermostat is reading the temperature incorrectly and rises more than 10 degrees than it actually is! I am using a C wire adapter.

C wire adapter: https://a.co/d/g4w13gn

[WizardEpidemic]

the c wire has 2 ends I have one in the C and the other with the red wire in R

[Jake]

Hey WizardEpidemic,

Apologies for the delayed reply. I wanted to follow up and see if I could be of any help. I found an article with some details on why you may be seeing a different temperature. 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,
Jake

[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.

Thanks,

Dan

[WizardEpidemic · Accepted solution]

Okay, i thought i should update this because I found the solution a while ago and it’s been working great

So i bought a new C wire adapter because the one i was using was getting noticeably hot, this is the new one that i got: https://a.co/d/6xSALih

Now for the wiring, all I did here was remove the second C wire end from the R and keep the other end in C. That’s all. I guess putting 2 wires in the R makes it malfunction? I don’t know but i hope this helps someone else.

[Juni]

Hi there

I’m glad your issue is resolved now. I’ll keep this thread open for one more day. If you need further help, let me know.

Thanks,

Juni