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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
Information
Instruction
Fault
Information
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