XW6048 120/240 60cy grid-tie 48v dc/120vac system

This inverter will not qualify DC voltage input, it continues to register the Fault & will not clear it, the dc voltage at the inverter is 

+55vdc. It qualifies the AC voltage OK this inverter was purchased in 2011 also an extended warranty was purchased  at the same time, which Ends 17 AUG 2021, I have made numerous attempts to contact Schneider Electric for support help on this problem.

But since they have moved the company to Canada I have not had any success in getting any tech help from them, does anyone out there have any suggestions?  


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