# Multiplus II Low Battery and missing Dynamic Cut-Off page in assistant

**URL:** <https://community.victronenergy.com/t/multiplus-ii-low-battery-and-missing-dynamic-cut-off-page-in-assistant/48058>\
**Category:** Q&A and troubleshooting\
**Tags:** 3-phase, multiplus\_2\_gx, professional, cerbo\_gx, ess\
**Created:** [1 November 2025 16:07 UTC](https://community.victronenergy.com/t/multiplus-ii-low-battery-and-missing-dynamic-cut-off-page-in-assistant/48058 "2025-11-01T16:07:13Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![ravo](https://avatars.discourse-cdn.com/v4/letter/r/c5a1d2/32.png) [@ravo](https://community.victronenergy.com/u/ravo)\
**Post date:** [23 November 2025 19:52 UTC](https://community.victronenergy.com/t/multiplus-ii-low-battery-and-missing-dynamic-cut-off-page-in-assistant/48058/6 "2025-11-23T19:52:27Z")

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Dear [SvenW](https://community.victronenergy.com/u/svenw),

I’m seeing very similar behaviour on my 3-phase system after updating to **GX v3.66** and Multi firmware **510**.

In my case L2 and L3 remain in **import / pass-through** even though voltages, CTs, Dynamic Cut-Off, Assistants and the Pylontech US3000C BMS are all correct.  
The system shows **no VE.Bus error** , and the behaviour is stable until I remove all Assistants — then everything works normally again.  
Once the Assistants are added back, L2/L3 go into import again.

My second installation, with the **same hardware and the same Assistant setup** , but still running firmware **502** , works perfectly — so the issue may be related to the newer firmware or ESS logic, similar to what you described.

I will reconfigure everything from scratch and also check VE.Bus configuration with MK3 next week.  
Would be great to hear if you observe the same behaviour on GX 3.66.

Here is link to my post

> [@3-phase system: L2 and L3 do not invert when grid is connected (only L1)](https://community.victronenergy.com/t/3-phase-system-l2-and-l3-do-not-invert-when-grid-is-connected-only-l1/48636):
>
> Hi, I have a 3-phase VE.Bus system with 3× MultiPlus-II 48/3000 units (L1 Master, L2+L3 Slaves). The system worked normally until one day. Since then: Off-grid: all 3 phases invert normally. Grid connected: only L1 inverts, L2 and L3 stay in passthrough/charging. AC-setpoint (even −2000 W) affects only L1. All units show “Inverter ON” and synchronize correctly. ESS ON/OFF makes no difference. Multiphase regulation = either “Total of all phases” or “Single phase” → no change i…

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