We installed a Nest E Thermostat in October 2022 I believe. We have single pipe steam radiators and a gas boiler, 1890 victorian home. The HVAC guy got it set up, said there was a C wire, and we were good to go. Now in February I start receiving 'low battery' alert, and then 'very low battery.' Change the battery with new batteries, and one day later we get a 'low battery' alert again. Unplug the unit from the wall, look at the batteries, and plug it back in, and no more low battery alert. Given this seems quick for the backup batteries to run out, I have tried to figure out what's going on. Here's what I saw when I looked at the settings:
Voltage: 3.030V
Impedance: 2346 mOhm
Connected to C-W-R
Vin: 35.276V
Lin: 385
PS: C-385
Nest Power Connector: Power test not run g.co/nest/m25 (nothing about this listed at the web address given), option to 'disable' *We don't have a power connector, we have a c-wire, so I had disabled this. However then later in the day it said 'no power.' So I reenable the power connector, even though there isn't one.
A few days later I walk past the thermostat and see that it says 'no power' but is still heating the house. So for some reason the c-wire has stopped providing power? Within a few hours the 'no power' alert goes away, magically the c-wire is working again?
I've tried to run a power test multiple times, and it never works. When I try I get an alert that it may drain the battery, but then when I click to run the test it starts spinning and then nothing happens, no test. Is this because the system is too taxed? Or what is going on?
Now it's mid February and I get a 'low battery' alert again for several days running, unplugging it from the wall doesn't reset the alert. I see the 'low battery' alert on my google home app. However it never drops to 'very low battery' alert, and it just dies. And Google home does not tell me the batteries have died, which is very concerning as we are often out of town and it gets to be -15+ here in Ohio in the winter. So I change the batteries. Looking at all the settings again, I have just disabled the power connector (since we don't have one). It didn't immediately make the thermostat say 'no power' so I have left it disabled for now in hope that somehow it helps.
Here's what I see when I look at the settings:
Connected to C-W-R (all blue)
Win: 38.105V
lin: 385
PS: C-385
Voltage: 3.202V
Impedance: 1177mOhm
I would REALLY like to speak on the phone to a technician about this. Is that an option? I don't want to pay to have my HVAC guy come out if the problem lies with the nest thermostat itself. And I don't feel like after spending $100+ on a thermostat I should be expected to participate in a forum as the only way of getting answers. I've been reading up on other chains where people had similar issues and it seems like there's often no answer/no quick fix and no google expert to help.
Any advice for how to fix this, or how to get google on the phone would be MUCH appreciated!!
Thank you!
