We review the VRM alarm log, VEConfigure parameters, DVCC status, and BMS communication to identify why your MultiPlus has stopped charging — and fix it remotely.
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I’ve used Ron a couple of times regarding issues with my Givenergy inverter and batteries after Givenergy went bust. My system stopped working properly so it was a stressful time but Ron resolved the issues and got my system working properly again. He’s really helpful and knowledgeable and I wouldn’t hesitate to recommend him and to use him again if the need arose.
A superb service from Ron who went beyond the normal service received from other Tech support companies. I live abroad and was badly let down when my givenergy system failed (and the company went bankrupt) and the local supplier ran away from the problem. Ron sorted the problem and even accessed specialist coding for the inverter that would not be available for suppliers. Ron also ran a full diagnostic to insure that all was in good working order afterwards. Without Rons support and patient assistance I doubt I would ever have got the system back up and running. Well done and thankyou and you have a customer for the future.
Ron is a super star. Two months ago my GivEnergy battery failed a firmware upgrade leaving it a brick. My installer couldn't/wouldn't fix it. GivEnergy couldn't/wouldn't fix it. Then they went into administration and all hope was lost. A flurry of emails later and Ron had diagnosed the fault (failed USB flash drive, something I'd suspected) and talked me through resolving it. Two months of nothing resolved in about 3 hours. It's great to work with someone who pays attention to the details, knows that they're doing (not just following a script) and gets stuff sorted without a fuss or up-charging.
Ron responded very promptly regarding my GivEnergy battery issue, his knowledgeable diagnosis was spot on and resolved the issue on first attempt. Would recommend to any and all.
Contacted Solar Tech Support when trying to understand what my Givenergy inverter problem might be and what might be my options. Received good/honest advise which backed up my thoughts.
Ron was brilliant. He really tried to help. He spent hours trying to fix our GivEnergy AIO and ultimately it became apparent that it needed parts to fix the BMS management system. As there appears to be no replacement parts available on the market, he gave excellent advice on what options are now available to move forward. He is incredibly helpful and knowledgeable.
Safety Warning
Do not open your inverter or interfere with DC cabling. Solar panels produce live DC voltage whenever exposed to light. Always use your DC isolator switch and contact a qualified solar engineer for hands-on fault diagnosis.
Before you start: You need access to VRM (vrm.victronenergy.com) or VictronConnect (Bluetooth app). If you have neither, we can access VRM remotely during a diagnostic session — you just need to share VRM access or provide your installation ID.
MultiPlus charging faults are almost always configuration — not hardware. The charger section, AC input limit, DVCC settings, and BMS communication all interact. Work through these steps in order to isolate the cause.
Open VRM or connect via VictronConnect over Bluetooth. The MultiPlus device page shows the current charger state:
Also note the AC input power reading. If it shows 0W AC input, the MultiPlus is not receiving grid or generator power — that's a different problem (AC wiring, breaker, or grid relay fault).
VEConfigure controls the MultiPlus charger settings. The values must match your battery manufacturer's specifications exactly:
The most common mistake: float voltage set too high, so the MultiPlus never enters bulk mode because it thinks the battery is already charged. Or absorption set too low, so the battery never reaches full charge.
Remote VEConfigure access requires a Cerbo GX with internet and VRM two-way communication enabled. Without this, a VE.Bus to USB adapter and physical access are needed.
The MultiPlus limits how much current it draws from AC input (grid or generator). If this is set too low, all available power goes to AC loads — leaving nothing for charging:
The AC input current limit can be set in VEConfigure, VictronConnect, or on the VRM remote console under the MultiPlus device settings.
If your system has a Cerbo GX with DVCC (Distributed Voltage and Current Control) enabled, the BMS controls the MultiPlus charge behaviour dynamically. This is the most common hidden cause of charging failures:
Common BMS lockout triggers: low temperature (LiFePO4 batteries typically refuse charge below 0°C–5°C), cell overvoltage (one cell above safe limit), and communication timeout (BMS lost contact with GX device via CAN bus).
If BMS communication has dropped, check the CAN bus cable between battery and Cerbo GX. See our battery BMS disconnect guide for detailed CAN bus troubleshooting.
VE.Bus errors can lock the MultiPlus into a fault state where it refuses to charge until the error is manually cleared:
Firmware mismatch: If your system has multiple MultiPlus units (parallel or three-phase), all must run the same firmware version. A mismatch after a partial update is a common cause of VE.Bus communication errors. Update the GX device first, then all MultiPlus units together.
See our VE.Bus error codes guide for the full error code reference.
The Victron MultiPlus is an inverter-charger — it combines a mains inverter, a battery charger, and a transfer switch in one unit. Unlike simpler hybrid inverters that handle everything internally, the MultiPlus charger behaviour is controlled by a layered stack of settings: VEConfigure parameters, ESS assistant rules, DVCC limits from the BMS, and AC input current restrictions. When any one layer sends a conflicting signal — the charger stops. The hardware is almost always fine. The challenge is finding which layer is blocking the charge.
This is especially common in third-party battery integrations. Victron publishes compatibility lists and recommended settings for batteries like Pylontech, BYD, and Dyness, but installers frequently use slightly different parameters or forget to enable DVCC. Over time, firmware updates on either the Victron or battery side can change the BMS communication protocol, causing a previously-working system to stop charging. We see this pattern weekly — a system that worked fine for months suddenly stops after a firmware update or a seasonal temperature drop triggers the BMS low-temperature lockout.
Tell us your MultiPlus model, battery brand, and what VRM or VictronConnect is showing. We'll review the VEConfigure parameters, DVCC status, and alarm history to identify the cause.
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