Very Low Battery Notification with 3.22V battery Voltage

[graussofj]

I have two Nest Nest Model 1.4 Thermostats installed with power connectors to a Energy Kinetics System 2000 Energy monitor on an oil-fired boiler with to hot water zones.   With a lot of hassle with the wiring of the power connectors to the System 2000 Control and help with the community, I successfully installed the thermostats and they were working perfectly for one day.  These were installed at my church, so I am monitoring them remotely.  This morning I got a "very low battery  - replace immediately" notification on one of them.  I checked the device info and it indicated the battery level as 3.22 V and reports the battery condition as "very low."  I checked the other thermostat and it reports a 3.03 V battery voltage and battery condition of "OK".  Both report that the Power Connector is connected.  I am getting no Error codes.  Does anyone know what could be going on here?

[Markjosephp]

Hello graussofj,

I'm sorry to hear you're having an issues with your thermostat that draining its battery. I'd love to know more about this.
 

Your thermostat might not receive enough power from your system, which causes it to use its batteries as backup power and drains. Do your thermostats have a C-wire or a Nest Power Connector? Some zoned systems could use a little less power, and a C-wire is often required to provide additional power for multiple thermostats.

Please have a look at this article and let us know if you need more help.

Regards,

Mark

[Jenelyn_O]

Hi graussofj

Checking in — please let me know if you're still having any concerns or questions from here, as I would be happy to take a closer look and assist you further.

Thanks @Markjosephp for your assistance.

Best,

Jenelyn

[Jenelyn_O]

Hi graussofj,

I'm just checking in to make sure that you've seen our response. Please let us know if you have any other questions or concerns as I will be locking this thread in 24 hours.

Best,

Jenelyn