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Fault - 4 - UN-G-V: Under Grid Voltage


  • INverter detects grid voltage as too low


  • Test - DC switch OFF
  • Check AC at the inveter test points
  • If AC measures low, adjust lower limit with permission from utility
  • Check LCD voltage reading, may be a bad measurement circuit
  • Test - DC Switch On
  • Check grid standard
  • Replace inverter

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