Installation guide

Installation Guide RN3000US Jan13
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8.2 Error Messages
If a fault occurs, the Digiwatts system generates an error message according to
the operating mode and the detected fault.
Table 8-1 Fault code
Faults detected by main DSP
Fault code Description
M_BOOST Boost error
M_Freq_H Frequency of grid is too high
M_Freq_L Frequency of grid is too low
M_Idc_H DC current of grid is too high
M_Iga_H Instantaneous value of AC current is too high
M_IGBT IGBT error
M_IgR_H RMS value of AC current is too high
M_Iin_H Input current is too high
M_Iin_Sensor Input current sensor error
M_Ilost_H Residual current is too high
M_Ilost_S Residual current sensor error
M_ISO Insulation resistance is too low
M_Iso_Relay Insulation detection circuit error
M_Over_load Over-load
M_Pll Phase-locked loop error
M_Power_H Running power is too high
M_PV_UNSTA PV input is unstable
M_RELAY Relay error
M_RESTART Coercively restart
M_S_MON Monitoring error
M_SPI_Err SPI communication error
M_Temp_H Temperature is too high
M_Tmep_L Temperature is too low
M_Udc_H DC bus voltage is too high