Showing results for 
Search instead for 
Did you mean: 

Nest 2nd gen thermostat not recognising base

Community Member

We've had our nest thermostat for around a year (inherited from previous home owner) without any issues. We recently unplugged it wall mount it, and now it's just saying "to use thermostat, attach display to its base". It is on the base correctly, we took it off and reattached it waiting for the "click" to ensure it was on. There is a flashing green light on the front, that I read may mean it's got stuck during a software update. I've tried to manually restart the device by holding down but nothing works.


Can anyone tell me why my thermostat no longer works?


Community Specialist
Community Specialist

Hi Kd113,


Thanks for posting ― let's get this sorted out.


A quick question: how long did you press and hold your Nest Thermostat?


Give this step a try:


  • Move the display closer to your router.

Keep us posted.




Hi Mel,


It's ok thanks, I've been through live chat support with Google who've confirmed after two hours of troubleshooting the unit is faulty and needs replacing.


Sadly as its out of warranty we have to buy a brand new unit which is really disappointing but here we are.


Thanks for trying to assist me 🙂

Community Specialist
Community Specialist

Hi Kd113,


Thanks for the update. I'm sorry to hear that the issue was with the hardware of your Nest Thermostat. Please let us know if you have any other questions or concerns as I will be locking this in 24 hours.