39
40
Routine maintenance
7
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 grid restored to be normal, inverter can automatically
start. Normally there is no maintenance or calibration required, however, the dust
screen should always keep clean. It needs to be replaced when it is dirty.
Procedure of the dust screen replacement:
1) The front and back cover can be seen after opening the front and back cover of
the inverter.
2) Open front and back dust cover from the bottom of the dust cover.
3) Take away the dust screen and insert a clean one.
4) Place the dust cover in the original place and fix it.
Figure 7-1 Dustproof device
No.
information
85
86
87
88
89
Batt_UnderVolt_Warning
AC_WU_OverVolt_Rmt_Warning
AC_WU_ UnderVolt _Rmt_Warning
AC_VW_ UnderVolt _Rmt_Warning
AC_UV_OverVolt_Rmt_Warning
Table 6.3.1 General history failure table
No.
information
0
1
2
3
4
5
waiting
checking
OnGrid
fault
Permanent fault
OfflineState
6.3.2 Inverter status
Figure 6.3.2 inverter status table
90
91
92
AC_UV_ UnderVolt _Rmt_Warning
AC_OverFreq_Rmt_Warning
AC_UnderFreq_Rmt_Warning
