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DC breaker open circuit
inverter temperature warning
inverter temperature too high
lightning protection devices failure
Overheating protection
Anti-discharge protection
Reverse polarity
Normal shutdown
Malfunction shutdown
Alarm
Figure 6.3.2 Serious historical fault table
6.3.3 Inverter status
No.
description
0
waiting
1
checking
2
grid connected
3
fault
4
Permanent fault
5
Communication failure
Figure 6.3.3 inverter status table
7 Routine maintenance
7.1 Replacing the dust screen
When the inverter fails, the inverter will automatically disconnect from the power grid, and
display the alarm information. When there is problem with the utility grid or the inverter is
disconnected manually, the inverter will shut down immediately to avoid islanding. When the