Watt measurement of VM-3P75CT jumping up and down in a 1kW range

[ejfeith (Edward)]

I did the update to v1.10, but I saw the energy meter twice in the list, once updated and then both updated, which was strange!

The firmware update did not resolve the issue. For me, the issue only arose three days ago; prior to that, everything seemed to be functioning properly for a long time. Therefore, I find it peculiar that L3 is suddenly no longer being measured correctly.

I took three more measurements and made a video of them.
Video 1.
VM-3P75CT Firmware 1.8
ESS meter set to inverter/charger

There is also a clear difference between the L3 measurement and the Home wizard P1 measurement .

Video 2
VM-3P75CT is completely switched off.
ESS is set to inverter/charger
The GX now displays the measurement of the inverter/charger.

There is no significant difference between the measurement of the inverter/charger and the P1 meter. This is functioning correctly.

Now updating the firmware and test again.
Video 3.
VM-3P75CT Firmware 1.10
ESS meter set to inverter/charger

Still the same problem, the measurements from L3 and the P1 meter differ greatly. The deviation seems to be constant.
I haven’t checked the meter box yet, but I don’t expect there to be anything wrong with the clamps.