Without going into my whole system detail, I have an ET112 Grid meter sat just before my consumer unit in my RV/Motorhome.
I have a changeover switch which allows me to flick from incoming mains/shore power, to inverter power (when incoming mains isn’t available). This sits before the ET112 Grid meter - So basically the grid meter see’s and reads any 240V power, wherever it comes from.
I have a GX2 with Touch 50 and the new UI.
I previously had a 12/1200 inverter which when active, would show it’s AC output reading on the AC Loads side of the new UI as expected, it was matched by the “grid” reading from the ET112.
I have recently switched the 12/1200 for a new 12/2000, which is working perfectly, except there is something odd going on… When running on the new inverter, the AC loads reading is now exactly double what the AC Grid meter reading is from the ET112!
If I go back to mains power, AC Grid meter readings and AC Loads reading match perfectly (and the new UI shows “inverter off” as I have turned it off).
Why is the reading on the AC Loads side double what the grid meter is showing when running on the inverter now? E.G. if the grid meter reads 1000W, the AC load output shows as 2000W (which I know isn’t right and is confirmed by the draw calculation from the batteries on the same UI).
Interestingly, the VRM portal reads correctly, the grid wattage and AC loads wattage match as they did previously! It’s only on the touch50 that the readings are wrong.
Someone might well wonder why I need the ET112 sitting directly before the consumer unit, measuring all AC, wherever it comes from, when ideally I should have it inline with the incoming shore power line, so when there is no shore power, it shows “disconnected” and then I just allow the inverter to read and display the AC loads. BUT that doesn’t solve the issue as to why the AC load is now reading as double what it actually is, when it shouldn’t be.