22
Feeding current Iac=xx.xA Feeding current amount in
xx.x A
PV array voltage Vdc=xxx.xV Input voltage from PV array,
xxx.x VDC
system fault
Isolation failure ERR ISOLATIOn Earth fault of the PV-panels or
failure of surge voltage protection
GFCI active ERR GROUnD FAULT Leakage current on ground
conductor is too high
Grid failure ERR GRID
Grid measured data is beyond
the speciļ¬cation (voltage &
frequency)
no utility1nO GRID Utility is not available
Input voltage too high SOBRETEnSIOn DC
DC OVERVOLTAGE
Input voltage higher than the
450V
inVerter fault
Consistent failure ERR MICROS
The readings of 2 microprocessors
are not consistent. It could be
caused by CPU and/or other
circuits do not function well.
Temperature too high1OVERTEMPERATURE The internal temperature is
higher than normal value.
Output relay failure ERR AC RELAy The relay between inverter
and grid is not functional
Output DC injection
too high2HIGH DC LEVEL Output DC injection
too high
EEPROM problem ERR EEPROM EEPROM inside has data
access problem
Communication between
microprocessors problem ERR COM The communication between
MCU inside is abnormal
DC bus voltage is too high HIGH DC BUS The DC BUS inside is higher than
expected
DC bus voltage is too low LOW DC BUS The DC BUS inside is lower
than expected
2.5V reference voltage
inside problem ERR REF 2.5V The 2.5V reference inside are
abnormal
Output DC sensor
abnormal ERR DC SEnSOR The DC output sensor is
abnormal
GFCI detection
abnormal ERR GFCI
The GFCI detection circuit is
abnormal