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1. Check if the voltage is in the range
of standard voltage in specification
this can be adjusted via the grid
set up page.
2. Check if grid cables are correctly
connected.
F48 AC lower frequency
Grid frequency out of range
1. Check if the frequency is in the
range of specification
2. You may need to adjust the
frequency on the grid set up page.
F56 DC bus bar voltage is too low
Battery low voltage
1. Check if the battery voltage is too
low.
2. If the battery voltage is too low use
the PV or grid to charge the
battery.
3. Check the battery BMS
Important: Especially with Lithium
batteries, ensure that the batteries
Max. discharge current or power
specification is the same or higher
than the inverter specification.
F64 Heat sink high-temperature failure
Heat Sink temp is too high
1. Check if the working environment
temperature is too high.
2. Turn off the inverter for 30 minutes
and restart.
Fault
Instruction
Fault
Structure
F01 DC_Inversed_Failure F33 AC_OverCurr_Fault
F02 DC_Insulation_Failure F34 AC_Overload_Fault
F03 GFDI_Failure F35 AC_NoUtility_Fault
F04 GFDI_Ground_Failure F36 AC_GridPhaseSeque_Fault
F05 EEPROM_Read_Failure F37 AC_Volt_Unbalance_Fault
F06 EEPROM_Write_Failure F38 AC_Curr_Unbalance_Fault
F07 GFDI_Fuse_Failure F39 INT_AC_OverCurr_Fault
F08 GFDI_Relay_Failure F40 INT_DC_OverCurr_Fault
F09 IGBT_Failure F41 AC_WU_OverVolt_Fault
F10 AuxPowerBoard_Failure F42 AC_WU_UnderVolt_Fault
F11 AC_MainContactor_Failure F43 AC_VW_OverVolt_Fault
F12 AC_SlaveContactor_Failure F44 AC_VW_UnderVolt_Fault
F13 Working_Mode_change F45 AC_UV_OverVolt_Fault
F14 DC_OverCurr_Failure F46 AC_UV_UnderVolt_Fault
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