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M2 Series Micro-inverter
35
36
FAULT CODE &
TROUBLESHOOTING
Troubleshooting
Code
Fault Information
Troubleshooting
1
Master Bus Voltage High
Disconnect the AC switch for 5-10 minutes, and check whether the fault
disappears.
Restart the inverter.
If this fault appears continuously, please contact the SAJ service.
2
Master Bus Voltage Low
Restart the inverter.
If this fault appears continuously, please contact the SAJ service.
3
Master Islanding Error
Please check whether the power grid is powered off, whether the grid-
connected box switch is tripped, and whether the AC cable of the inverter is
connected firmly.
After the above inspections and there is no power failure or disconnection, or
insecure connection, please close the AC switch and re-connect to the grid.
If this fault appears continuously, please contact the SAJ service.
4
Master Adc Sample Error
Disconnect the AC and DC switch for 5 minutes, and then restart the inverter.
If this fault appears continuously, please contact the SAJ service.
5
Frequency Config Error
Please check whether the safety regulations are selected correctly.
Disconnecting the AC and DC switch for 5 minutes, and then restart the inverter.
If this fault appears continuously, please contact the SAJ service.
6
Master EEPROM Error
Restart the inverter.
If this fault appears continuously, please contact the SAJ service.
7
Master Temperature High Error
Please check whether the heat dissipation shell of the inverter is wrapped or
covered by other items.
Please check whether the inverter is installed in a place exposed to direct
sunlight.
Please check whether the installation environment is well-ventilated.
If this fault appears continuously, please contact the SAJ service.
8
Master Temperature Low Error
Please check whether the ambient temperature at the inverter installation
location is too low.
If this fault appears continuously, please contact the SAJ service.
9
ISO Error
Disconnect the AC switch, and please check whether the ground wire of the AC
output terminal is firm, and whether the AC wiring is correct.
6
.