faux_grey

Probably worth checking what your back-to-discharge battery voltage settings are on SBU, if it's too high, your batteries will never hit that voltage and you'll always be on grid power.

@Coulomb I havent got round to updating the inverter yet (need to find my serial cable) But I have noticed, when in USB Utility-solar-bat, the inverter seems to draw all the required load from the panels, and only around 50w from mains. When doing this, it reports 0w being drawn from the panels, and my battery reports 0w being drawn from it, yet I have a 600w load running and only 50w drawn from main supply. My only explanation is there is a firmware issue causing USB to act like SUB and vice-versa, while also preventing correct measurements from the MPPT.

@CoulombIt's in mode 3 But to re-iterate, using the watt-meter on the mains input shows it drawing full load from the mains to feed what is behind the inverter. the app shows 0 watts drawn from panels in this mode which is a little sus.

I have it currently set to "Solar First" But I see no difference in operation when switching between: "solar first" "Utility & Solar" "Only Solar"

Hey Folks! I've recently put in a Axpert VM3 5K system and am currently experimenting with it before getting it integrated into any DB boards. Currently I have 8x 310W panels in series giving the inverter 300v at around 7 amps for around ~2000W of power I also have a 2.4kwh 48v lithium battery for load shedding. I have a small current meter on the input side of the inverter, and can see the current out of the inverter through the 'powerwatch' app on my phone through bluetooth. With the inverter in SUB/ Solar-Util-Bat mode, all of the required power gets drawn from the eskom grid, and PV power is not used at all, my current meter sees 300w coming into the inverter from eskom, and the inverter tells me there is 300w coming out to power my computer which I have plugged in as a test load. I've tested this with small 50w load, and running a 1000w aircon, it only draws power from the grid in SUB and is not supplementing with solar energy. Those familiar with the VM3 will know there's a display icon which shows BYPASS ------> The inverter is permanently on bypass unless I obviously turn off the eskom power, or change the inverter mode to SBU Solar-Bat-util, which then drains the battery which I want to keep full for load shedding. On this mode there is a "back to grid" voltage, but because I have a lithium battery, the settings on the VM3 does not let me set the back to grid voltage high enough to not drain the battery by a large amount. Without Eskom available, I can then see the inverter start to draw current from the panels, and it draws exactly the right amount of power from the panels to power the load, I've even managed to run my 1000w aircon just from the panels. Everywhere I look, I see that the VM3 has a "grid assist" function where it can mix PV & Eskom through a AC/DC/AC chain, but I can't figure out how to get this to work, and the solar panels are not being used during the day unless I remember to manually switch off & on the eskom power to the inverter I'm wondering if it's a firmware thing? According to the phone app at least, my current firmware version is 00041.15 for "Main CPU Version" Anyone got any ideas? Have I missed a really obvious setting?