question

Hello @BJS1 …. Is the wide input frequency box ticked. It allows generator input from 45-60 hz. Maybe the generator is just slightly off frequency.

Hi @BJS1

Have a look through this.. https://www.victronenergy.com/live/multiplus_faq

In particular, the Dynamic Current Limiter, which is almost an essential with small gensets.

The WeakAC setting is ok to use for now, but this can mask genset wiring issues too, and shouldn't be necessary once you get it sorted.

Hi @Trevor Bird and @JohnC I'm experiencing the same issue, I think.

In my case, I had the system charging from my generator until recently. It seems that periodically it just stops working (like separate by weeks or months).

I am testing with two separate generators, one of which is brand new (a 5000 watt Champion Dual Fuel and a Harbor Freight 1,500 watt one), and neither of my two MultiPlus' will accept and invert a charge from them. I've tried the 30 amp line, and the 20 amp line, to no avail.

I've checked all my connections and everything seems secure. I've tested my voltage and it's consistent all the way along the line. From the generator outlets, the electrical cord, all the way to the wires going directly into the AC input on the MultiPlus main. It appears to be simply that the MultiPlus' are rejecting it. Although I'm getting no errors on my Cerbo GX Touch Screen.

I have no idea what's going on or how to troubleshoot it from here. But it occurs for bother generators, and I've tested with multiple extension cords just in case.

Look in the protections settings log using a Mk2 and VE configure. This will tell you why the generator is disconnecting. In my case it was low voltage, due to an earth leakage fault in the generator upsetting the AVR. This only showed up when the multi tried to connect.