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jonny-b asked

Multiplus II Stuck In Sustain Mode

I've got a new system: Multiplus II, Gerbo GX and ET112 grid meter with 2 x Pylontech US5000 batteries. It's installed with an existing AC-coupled solar PV system. The batteries charged and ESS assistant was set up using VE Configure 3. I set the charger absorption and float voltages to 51.7v & 51.0v respectively. My VRM portal is showing batteries at 100%, 52.3v and inverter's in Sustain, even though I'm drawing a few kW from the grid. The Pylontech's BMS is on CAN-Bus as recommended. Oh, and battery low level cut-off's 48V. I've read through all the documentation available but can't see what's wrong - any ideas please?

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marcve answered ·

@jonny-b. I noticed a couple of times, that the Multi and Cerbo are blocked when the MK3-usb is still connected. Disconnect it and reboot Multi and Cerbo, and see if this solves the problem.

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jonny-b avatar image jonny-b commented ·

Thanks for the suggestion. Disconnected ethernet cable from Mk3 dongle & started the Multiplus - no change, still in Sustain.

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