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Error Code - 438 - Function Imcompatibility

Description - Function incompatibility (one or more PC boards in the inverter are not compatible with each other, e.g.,after PC board replacement) 


Behavior - The inverter will automatically attempt to connect again and, if possible, resume feeding energy into the grid 


Troubleshooting- Update inverter firmware; If status code persists: contact a Fronius-trained service technician 

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