Question about Sma Solar SMA Sunny Boy SB11000TL-US-240 > 11000 Watt 240 VAC GRID TIE Inverter

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RCDC switch to house blown and reset.Inverter comes up with fault Vac-Bfr.Have turned off and on in advised order in the manual but fault still appears. I suspect it is the fuse?? But, where is it?

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