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3.5 Troubleshooting
In most situations, the inverter requires very little maintenance.
However, if the inverter is not working properly, please try the
following troubleshooting solutions before calling your local
dealer：
` Should a problem arise, the red (fault) LED indicator on the
front panel will light up and the LCD screen will display the
type of fault. The following table lists error messages and
the solutions for associated faults.
Display Possible actions
System
Fault
Isolation
Failure
1. Check the impedance between PV (+) & PV (-) and
make sure the PV inverter is earthed. The
impedance value must be greater than 2MΩ.
2. Contact the local service office for help if the
problem still exists.
Ground I
Failure
1. The ground current is too high.
2. Unplug the inputs from the PV generator and check
the peripheral AC system.
3. When the problem is cleared, reconnect the PV
panel and check the inverter status.
4. Contact the local service office for help if the
problem still exists.
Vac Failure
1. The PV Inverter will automatically restart within 5
minutes if the grid returns to normal.
2. Make sure grid voltage conforms with the
specification.
3. Contact the local service office for help if the
problem still exists.
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