Thermostat restarts regularly

[Coderiffic68]

i purchased a new construction home in April that came with a Nest thermostat. Since day 1, the thermostat restarts regularly throughout the day, every day. When I walk up to it, more often than not it’s blinking yellow (updating?) or blinking green (rebooting), rather than simply displaying the current info.

Up until today it was just frustrating. Today I had an HVAC checkup on my whole system, and the tech informed me that the thermostat is causing my AC unit to short cycle. He ran a bunch of tests to confirm that it was in fact the thermostat causing the issue.

Mind you, everything in the house is brand new, so nothing is old, dirty, clogged, etc.  The tech confirmed everything else in the system is in great working order. 

Anyone have any thoughts on what’s wrong or how to fix?

[Patrick_Caezza]

Good chance the Nest thermostat was installed incorrectly. With it being new construction, you should contact the warranty service and have them send someone to install it correctly.

[Coderiffic68 · Accepted solution]

Thought I would follow up here. I spoke with Nest support who has deemed my thermostat defective. It’s still under warranty so they are replacing it free of charge. 

Support had me send a picture of the wiring and check the power info displayed on the unit. They then had me loosen the mounting screws slightly (I suppose thinking a cable may be crushed). After loosening and replacing the unit onto the mount, I informed support I’d need to wait for it to finish rebooting (again, third time while on the call). He promptly put me on hold, and came back a few minutes later saying they’d replace it. 

I’ll say this: support was very helpful and nice. Despite an accidental disconnect they called right back. And I had literally zero wait time at noon EST on a Saturday. Better than most

[Jeff]

Hey Coderiffic68,

I'm happy you were able to get this worked out with support. You'll definitely want to continue to work with them for resolution on this, but before I mark this as resolved, is there anything else you might need?

Thanks,

Jeff

[Jeff]

Hi all,

As it looks like we got our resolution here, I'm going to mark this one as resolved in the next 24 hours. Thanks to all who helped and contributed. If anyone has any other needs, please feel free to let me know before the lock.

Thanks,
Jeff