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Error Code - 134 (v3.18xx) or 18x86 (v3.19xx)

CPU v3.18xx and below - Error Code - 134

CPU v3.19xx and above - Error Code - 18x86


Error Message: Isolation


Solutions: PV Isolation fault. The inverter has detected the PV solar array is not properly isolated from ground earth. The isolation is checked each time the inverter starts up.

  • Check the PV installation for isolation problems and ground leakage.
  • Only a certified PV installer must fix the faulty string before connecting it to the inverter.


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