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BMS COMMUNICATION ERROR


Bhuba
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Hi, Everyone. I am also new in solar energy. I have recently installed solar power kit in my house ( Growatt off Grid inverter SPF 5000TL HVM-WPV, with Dyness B3 Lithium battery). My problem is the communication problem between inverter and battery. Each time I switch on the battery the inverter shuts down power from grid and PV. I get error "20". I have connected the battery communication   via RS 485 port of the inverter. The Dip switch is set at #2 and #3 On. Please help.

 

regards 

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I had the same issue with the exact same setup. Contact the people you got the inverter from and ask for a replacement comms cable.I know I had a orange cable supplied which didn't work. After installing the replacement cable and switching the inverter to Li mode everything was working fine.

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