M2 Series Micro-inverter
37
38
Code
Fault Information
Troubleshooting
Please check whether the AC and DC cables are damaged, whether they are
soaked in water, and whether the battery board is soaked in water.
After the above checks are confirmed, please close the AC switch and restart
the inverter.
If this fault appears continuously, please contact the SAJ service.
10
Output Current Dci High
Disconnect the AC switch for 5 minutes and then restart the inverter.
If this fault appears continuously, please contact the SAJ service.
12
Master HW Inv Current High
Disconnect the AC switch and check whether the AC cable is firmly connected;
After the above checks are confirmed, please close the AC switch and restart
the inverter.
If this fault appears continuously, please contact the SAJ service.
13
Master SW Inv Current High
14
Grid Voltage 10Min High
Please check whether the grid voltage is too high, whether the AC output cable
of the inverter is connected firmly and whether the grid-connected cable is too
thin.
Please check whether the grid-connected safety regulations of the inverter are
selected correctly.
If this fault appears continuously, please contact the SAJ service.
15
Grid Voltage High
16
Grid Voltage Low
Please check whether the grid voltage is too low.
Please check whether the AC output cable of the inverter is firmly connected.
Please check whether the grid-connected safety regulations of the inverter are
selected correctly.
If this fault appears continuously, please contact the SAJ service.
17
Master Grid Frequency High
Please check whether the grid-connected safety regulations of the inverter are
selected correctly.
After disconnecting the AC switch for 5 minutes, close the AC switch and restart
the inverter.
If this fault appears continuously, please contact the SAJ service.
18
Master Grid Frequency Low
Please check whether the grid-connected safety regulations of the inverter are
selected correctly.
After disconnecting the AC switch for 5 minutes, close the AC switch and restart
the inverter.
If this fault appears continuously, please contact the SAJ service.
Code
Fault Information
Troubleshooting
19
Master No Grid Error
Please confirm 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 confirm that 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.
20
Master PV1 Voltage High Error
Please check whether the open-circuit voltage of each battery panel exceeds
the maximum input voltage of the inverter.
After the above checks are confirmed, please close the AC switch and restart
the inverter.
If this fault appears continuously, please contact the SAJ service.
21
Master PV2 Voltage High Error
22
Master PV3 Voltage High Error
23
Master PV4 Voltage High Error
24
Master HW PV1 Current High
Please check whether the positive and negative poles of the battery board are
reversed.
After the above checks are confirmed, please close the AC switch and restart
the inverter.
If this fault appears continuously, please contact the SAJ service.
25
Master SW PV1 Current High
26
Master HW PV2 Current High
27
Master SW PV2 Current High
28
Master HW PV3 Current High
29
Master SW PV3 Current High
30
Master HW PV4 Current High
31
Master SW PV4 Current High
