Fault Codes/Generac/500Generac500UnclassifiedGeneralWhat This Code MeansConfiguration MismatchPossible Causes•Voltage configuration set in controller does not match voltage configuration for installed Voltage Configuration Cartridge (VCC).Related Generac Fault Codes501502000325A5031345041 SECOND FLASH (1 ON – 1 OFF)5050.01 014433505-J40.01 014432506Browse all Generac fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 500 on your specific Generac unit — cited to the OEM manual, not a forum guess.TRY IT FREE