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.