Synchronous trigger signal
failure
PFC IGBT over-current in C phase
Parallel communication loss
INV IGBT over-current in A phase
Parallel output current
unbalance
INV IGBT over-current in B phase
Battery has reached end of life
expectancy
INV IGBT over-current in C phase
DSP communication failure
LCD&MCU communication failed
Line situations are different in parallel system
Bypass situations are different in parallel system
Locked in bypass after overload 3 times in 30
minutes
Converter current unbalanced
Cover of maintain switch is open
Utility extremely unbalanced
Battery voltage unbalanced