Getting an odd issue on my Multiplus II 2X120. I’m connected to 50A power and have the input current level set at 50A. Drawing 4-5,000 watts and twice today I got the following message about an overload on L1. I’ve been nowhere near 50A of load on L1 (or L2) where assist would have to kick in. Once we were in the RV when it happened and there were a few clicks and then power dropped out. It recovered by itself (didn’t need to power cycle the MPII), but I’m not sure why it was even trying to invert, there was no power loss alarm and no possible way I was over 50A per line where it would have had to assist.
We’ve had the same issue a few times. I suspect ours was from a park drop out, or our auto transfer switch saw something it didn’t like. Happened once with both AC running, had to power cycle the MPII. Pretty sure UPS mode is what makes it invert during shore loss.
Thank you, that’s helpful! Yes, there’s definitely a low line at this park. I checked in VEConfig and it’s set to switch over at ~90 volts, I suppose it could have gotten down that low for an instant, it switched to inverting then overloaded? That’s certainly what seems like happened, but there’s no “line power loss” message in the logs, wondering if it can drop and recover fast enough to not issue the message but then it takes long enough to move back to shore power to get the inverter to overload?
I’ll keep an eye on it, but really helps to know others have seen this behavior! This is the first time it’s ever done it, so I’m relatively sure it’s an issue with the park power, just not thrilled with how the logging, wish it would tell me what happened!
We see 109.9V in the log there. It’s sampled relatively slowly so I wouldn’t be surprised if it dipped lower for more than a few cycles, the inverter took over as it should, then issued a warning about the load. Hit the gear on the widget and select “accurately show peaks”, that might provide more info.
I’m not sure what level a warning is generated at, or if it’s adjustable, but it is only a warning.
I switched that notification to errors only. “inverter/alarm setup/inverter overload” in the Cerbo.
