Thermostat is faulty

[Rock8855]

I have paid a heating professional $100 actually the one that wired my nest thermostat to come and check it out he says it is faulty I need a new one it is under two years since we installed it

[laurentbourg]

What issue did he diagnose?

[Elswann]

It's definitely the 6.2-22 firmware. 

[laurentbourg]

I have the 6.2-22 firmware on multiple Gen 3 units and did not experience any issues. I assume you or the pro have tried to factory reset the Nest thermostat?

[Elswann]

Yep. I have two. I've reset - switched locations etc. Many people have reported the issue.