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Fault - 13 - PV ISO-PRO 01/02: Ground Protection


  • Inverter detects low DC insulation resistance


  • Inspect installation
  • Reset inverter
  • Note weather conditions when alarm occurs
  • Measure insulation resistance
  • If normal, measure in SAME weather as alarm
  • Physically check cables
  • Replace inverter

Troubleshooting -  The error commonly reflects a ground fault. Please check PV wires for grounding or shorts. Inadequately rated wire may cause the PV ISO-PRO error to continue. Please check the inverter for any grounding occurring internally.  

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