G4CVZ - "Very low battery" warning

[logidelic]

Hello!

I have the cheapo G4CVZ. Installed a few months ago and no problems until today when I saw the dreaded "Very low battery" warning.

Questions:

• Am I right in understanding that this model uses alkaline batteries? The white battery sleeve with no markings makes me doubt...

• Assuming the C-wire was working correctly, I would guess that the battery should have lasted much longer?

• I see (below) that I still have a good VIN even when the system is heating. Am I right in understanding that this means that the C-wire is functioning correctly?

Details (right now while system is on/heating):

• Connected to wires: C-W-R (heat only system)

• VIN: 32.3V

• LIN: 385

• PS: C-385

• Battery Voltage: 3.127V

• Battery Impedance: 2372 mOhm

Thank you!

[Markjosephp]

Hello logidelic,

I'm sorry for the trouble this may have caused you — let's see what's going on.

The C wire conserves battery life because the thermostat only uses the batteries when the thermostat experiences power loss. Under normal operating conditions, the battery life is expected to last for about 2 years. However, depending on the Wi-Fi activity on the thermostat, the battery life might last longer or shorter.

I'd suggest replacing it with the recommended batteries: AAA 1.5 V alkaline batteries, such as Energizer AAA 1.5 V Alkaline Battery.

Please let me know if that helps.

Best regards,

Mark

[Markjosephp]

Hey there,

I wanted to follow up and see if you are still in need of any help. Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further.

Best,

Mark

[logidelic]

Thank you very much for the response. I replaced the batteries, but it is still mysterious as to why they died after only a month or two... For now I will wait to see how long the new ones last before investigating further...

Thank you again!

[Markjosephp]

Hello logidelic,

I appreciate your effort in replacing your thermostat's batteries. At the moment, let's monitor its behavior, and please keep us posted on how it goes.

Best,

Mark

[EdwardT]

Hi logidelic,

I wanted to follow up and see if you are still in need of any help. Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further.

Thanks,

Edward

[EdwardT]

Hi logidelic,

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 in 24 hours.

Thanks,

Edward