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Those Sunpower panels will work just fine negative ground or with new inverters, no grounding on either PV+ or PV-. 11 year old panels...
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I figured it out.
Watched the inverter during the initial start up from the panel (cold boot from DC power increase.). Threw code 514...
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Recently installed the subject Inverter with a 9 Kw Sunpower solar panel array. Making power just fine until appx 6700 watts achieved...
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Thank you for the reply. I was able to find a refurbished Sunpower (Fronius) 10 Kw inverter that fits the bill! PV-On!!
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I am working to solve this same issue. I have found used Fronius (SPR) units that are explicitly compatible but have not found any that...
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Hi everyone!
I have an ~11 year old grid-tied SunPower solar array comprised of forty SPR-245NE-WHT-D 245W modules (so 9.8kW total) and...
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