Multiplus-II 48/15000/200-100 230V connected via VE.Bus to Cerbo GX does not switch ON either from the Cerbo GX or the inverter switch once powered down. It can only switch ON once the VE.Bus cable is disconnected. However, it can properly switch off either from the Cerbo GX or inverter switch wit…

Thanks, that helps. So is this reproducible then for you?

Hello, I will get you this information soonest.

Hello Nick, No, it is not reproducible at the moment. I do not have another device to test it on. I am planning to visit the distributor in a few week to see if this issue exist on other devices or perhaps just this ones. I will do that and update on the findings

Thanks. It has been difficult to help as the issue seems to resolve after the initial install.

Hello LX, The inverter is running firmware version v556 currently.

Hi Theophilus, did you find a solution? I have a similar problem. [image] Multiplus (I) will not switch on Q&A and troubleshooting I have a new installation with a Multiplus 48/3000/35-16 (brand new older model) and a CCGX. I updated everything to the latest production ve…

@selwyn There is an old workaround if it persists. Q20 .

Yes, I used the Q20 workaround. See below: So, I tried powering the Cerbo from other cables coming from the battery in case of some slight voltage drop vs the feed to the Multiplus; it made no difference. I read in the Cerbo Manual FAQs (19.2.20 Q20) that when using other power sources than the ba…

Thank you - It worked for me too. I cannot explain why there was an issue, as the GX device is powered from the battery.

I didn’t get a solution yet. Im in touch with the distributor. Once we have it resolved, i will update. Im suspecting a software issue that can easily be resolved with a firmware update.

Multiplus-II inverter not switching On with VE.Bus cable to Cerbo GX Connected

DIY

selwyn (Selwyn Jackson) 14 May 2025 07:35 12

Hi Theophilus, did you find a solution? I have a similar problem.

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Multiplus-II inverter not switching On with VE.Bus cable to Cerbo GX Connected

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