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AC FREQ LOW
Grid frequency below range
PV VOLT HIGH
Solar panel voltage over range
PV ISUL LOW
Check for insulation of solar panels failed
GFC HIGH
Leakage current high
KEEP PV OFF
Internal fault detected
Please keep DC breaker of solar panels off
C1
High DC current detected
C2
Relay failed
C3
DC current sensor failed
C4
Internal temperature high
C5
GFCI detection failed
C7
Anti-islanding detection failed
FAN FAILS
Fan not working properly
F1
Bus voltage low
F2
Bus voltage high
F3
CPU communication abnormal
F4
Mismatch of firmware version between CPUs
F5
EEPROM memory faulty
F6
Error on system consistency
F7
Over-current in inverter detected
F8
Slow start-up on Bus
A3
SPD detection failed
WARNING
Before maintaining and commissioning inverter and its
peripheral distribution unit, switch off all the charged terminals
of the inverter and wait at least 5 minutes after the inverter is
powered off.
8
Maintenance