Hello "AnotherRookie",
Sorry to hear you are running into so many issues.
My firmware version is 3.3.40.1.12
I now remember that I got the configuration error also when one of the parameters was wrong. It seems the HEM does some internal validation when saving.
So maybe some parameter got set to an invalid value at some point (maybe even due to a network glitch at the time) and not it doesn't take any new config.
One more thing you could try: reset the HEM to its factory default configuration:
From the documentation:
"
1. Make sure the HEM G2 has been connected to the power supply
2. Press and hold the Z-Wave button for 10 seconds
3. If the HEM G2 LED blinks slowly, it indicates reset success, otherwise please repeat step 2.
Note: Reset HEM G2 to factory default settings will:
- sets HEM G2 to not in Z-Wave network state
- delete the association setting and power measure value
- restore the configuration settings to the default
"
Disclaimer: I have not tried this myself, but I copied this straight from the engineering document.
(There is a draft engineering spec for the HEM G2 but I cannot post it here as per request of Aeon Labs. But they said they would give the document if a user directly requests it - contact their tech support).
On another note, I think you are correct, the value you see is the voltage reported in the kWH field. The G2 seems like it actually can report voltage and Amps, and this maybe a bug in the current firmware. As son as I had the bit set for voltage (in the parameter 101), the values would switch between kWh and 122.xxx,
Aeon Labs said they were able to reproduce this, but maybe you might want to contact them too to get some more traction. In any event, you probably need to get your config working first.
PS: I would try all of this on one of your meters first, unplug the other one for the time being to rule out any interference. Try to get one of them to work first.
Let me know how it goes...
Mike