[image] System Components: Inverter/Charger: MultiPlus-II 48/3000/35-32 (Firmware: [Insert Version]) Solar Charger: SmartSolar MPPT 150/35 Battery Monitor: SmartShunt 500A/50mV GX Device: Integrated MultiPlus-II GX Battery: 15-cell (15S) LiFePO4 (48V nominal) used mor…

You need to deactivate the “solar & wind priority”, see my answer above!

Is the first picture from your system? If yes than you have “solar & wind priority” activated but that shouldn’t be used together with ESS. [grafik] 1. Introduction Does your battery communicate with the GX device? It’s normal that the charging current ge…

[image] Ray Pro: and a 50A (1C) charge current limit From the state of your Inverter (Inverting) I conclude you don’t have DVCC enabled. In that case, the reported charge current limit of the battery is of no use and the inverter will act according to its charge-profile. That is only required…

[image] M_Lange: Does your battery communicate with the GX device? Only via SmartShunt [image] M_Lange: If you have voltages of up to 255V than it’s normal that the MultiPlus disconnects the grid. That was my thought too, but I don’t know why I get “Lost Grid”, just that I do and the …

[image] dognose: I conclude you don’t have DVCC enabled Nope, definitely on… [image] This is a small setup just to run a pump during the day…

[image] Ray Pro: Nope, definitely on… Yeah, but you already answered matthias you dont have a communicating BMS, but a smartshunt. Then, the Inverter will not display “External Control” as the smartshunt is only a monitoring device, no active controller.

Not sure I’m following what you’re saying… put it in external control eg: [image] All I want it to do is use all available solar (I can care for the battery), then supplement batt/PV power with grid when load is > 1.6kW. And today would not even turn on…. I had to power cycle the whole thing to …

And even when I disconnect the grid, it still refuses to use PV… w/ “solar & wind priority” on and no ESS Assistant. [image] I have now unticked “solar & wind priority” which is… [image] Which does seem to have fixed the refusal to use solar… [image] Also that 99% SoC is whatever I enter in…

ESS Configuration and Solar Throttling Issues

Q&A and troubleshooting

IIOS (Ray Pro) 21 December 2025 05:52 8

As soon as I connect the grid… doesn’t touch solar and consumes from the grid… I set the sustain voltage to 48V.

Topic		Replies	Views
ESS battery charge rate from grid DESS diy , ess , dess , multiplus-ii , 3-phase	6	551	10 November 2024
Victron and grid Q&A and troubleshooting beginner , ess , lithium_battery , multiplus-ii	15	322	7 January 2025
ESS Issue: SmartSolar (Slave) Shuts Down Under High Load, Won't Share with Batteries Q&A and troubleshooting diy , multiplus , ess , domestic	5	48	24 January 2026
ESS, no charge when solar is producing Q&A and troubleshooting beginner , ess , multiplus-ii , cerbo-gx	20	293	6 December 2025
ESS charge does not work when Multiplus 2 is in "charge only" mode Q&A and troubleshooting beginner , ess , multiplus-ii , pytes , cerbo-gx	13	573	3 January 2025

ESS Configuration and Solar Throttling Issues

Related topics