Installation Guide RN5000US
55
8.2 Error Messages
If a fault occurs, the Digiwatts system generates an error message according to the
operating mode and the detected fault.
Fault Code
Description
No_Ug
There is no grid.
Ug_L
The AC grid voltage is too low
Ug_H
The AC grid voltage is too high
Ig_H
Over current on the AC side
IgRMS_H
Over current on the AC side
Ilost_H
The residual current is too high
Fre_H
The frequency of the grid is too high
Fre_L
The frequency of the grid is too low
Pw_H
The output power is too high
No_balan
Output power – input power > 700W
Relay1_un
Relay1 is not work properly
Relay2_un
Relay2 is not work properly
Vdc_H
DC bus voltage is too high
VdcL_Wait
DC bus voltage is too low when the inverter at Wait mode
VdcL_Run
DC bus voltage is too low when the inverter at Run mode
Idc_H
The dc current of the grid is too high
Tmpr_H
The temperature is too high
Tmpr_L
The temperature is too low
Fan_Err
Fan err
IPM_Err
IPM err
Iso_Err
The insulation of PV+/PV- to the ground is too low
CPU_Err
Cpu err
EPROM_Err Eprom err
SCI_Err
SCI communication err
SDRAM_Err SDRAM err
HW_Vdc
The voltage of the DC bus is too high
HW_Cap
The capacitance of the DC bus is short circuit
HW_Low
The voltage source of 12V/5V/3.3V is too low
L_N_Opp
The L and N of ac wire are opposite
SPI_Err
SPI communication err
Slo_RAM
The ram of the slave dsp is err
Comm_un
Communication err
