question

jasonshanahan avatar image
jasonshanahan asked

Lost power momentarily when i pulled the shore power

So tonight this happened for the first time, and i am not sure the cause, or what to do next. I have a 3000w multiplus II 800ah of renogy lifepo4 batteries. I was charging via 30 amp shore power connection because of the cloudy past few days so my 2080 watts of solar werent keeping up. All was good until i unplugged the shore power cable. As soon as the plug came out, the entire system blacked out, momentarily. Everything rebooted, but it shut down the lights, tv, internet, everything. The blackout lasted about half a second and then everything started coming back on on its own. No alarms or error codes came up on the cerbo touch 50, and its all working as normal now. Any thoughts on what could have caused this?

Multiplus-II
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kevgermany avatar image
kevgermany answered ·

It will be because the system needed time to switch. Try turning the system onto inverter only before pulling the plug. (From the switches in the VRM dashboard)

Another thing which may help is to turn on UPS in the Multiplus settings.

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iand avatar image iand commented ·

I thought that almost-instantaneous (20ms) inverter power when incoming mains drops out is one of the main features of the Multiplus, and enabled by default?

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derrick thomas avatar image derrick thomas iand commented ·
Make sure that UPS (uninterrupted power supply - this is what you are referring to) is enable in configuration.
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