Alpha ESS STORION-T50 Operation & Maintenance Manual page 24

TROUBLESHOOTING
Fault LCD Fault
Fault Name
Category Display
GC_Fault GC_Fault
Over_Load Over_Load
EMS
Over_Curr Over_Curr
PCSModeFault
PCSModeFault
DC-AC
subsystem AC
PCS
AC_Out_volt_F
output voltage
Fault
40
Troubleshooting
Check if DO2 (TOP BMU)is
connected properly, and after
setting the diesel GENSET to
start, measure whether DO2 (TOP
BMU)1, 2 is on.
If the problem is not resolved,
please contact AlphaESS customer
service.
Reduce the number of loads, so
that the load required power is
less than the rated power of the
system.
If the problem is not resolved,
please contact AlphaESS customer
service.
Reduce the number of loads, so
that the load required power is
less than the rated power of the
system. After the load reduction,
select fun-PCS-ClearFault on the
EMS menu to clear the fault,
otherwise the PCS will not
operate normally.
If the problem is not resolved,
please contact AlphaESS
customer service.
Check whether the inverter is in
the remote control mode. If it is
not the remote control mode,
please set it to the remote
control mode.
If the problem is not resolved,
please contact AlphaESS
customer service.
Restart the system to check if the
fault is eliminated.
If the problem is not resolved,
please contact AlphaESS customer
service.
41
Fault LCD Fault
Category Display
DC-AC subsystem
AC_phase_lost
AC phase lost
Fault
DC-AC subsystem
off_grid_UPLF
off-grid voltage
phase lost Fault
DC-AC subsystem
emergency
EG_SF
stopped Fault
PCS
DC-DC
bat_overload subsystem battery
overload Fault
DC-DC
subsystem
emergent_stopped
emergent stopped
Fault
STS subsystem
grid_N_line_lost
grid N-line lost
Fault
STS subsystem
off_grid_AC_phase
off-grid AC
_lost
voltage phase lost
Fault
TROUBLESHOOTING
Fault Name Troubleshooting
Check if there is phase loss in the
AC input of the inverter. If there
is a phase loss, please power off
and reconnect the cable.
If the problem is not resolved,
please contact AlphaESS
customer service.
Check if there is phase loss in
the AC input of the inverter. If
there is a phase loss, please
power off and reconnect the
cable.
If the problem is not resolved,
please contact AlphaESS
customer service.
Check if the emergency stop
button is operated manually. If
yes, please release the emergency
stop button according to the
manual.
If the problem has not been
solved, please contact AlphaESS
customer service.
Reduce the load on the grid side,
check if the fault is eliminated,
If the problem has not been solved,
please contact AlphaESS customer
service.
Check if the emergency stop
button is operated manually. If yes,
please release the emergency stop
button according to the manual.
If the problem has not been solved,
please contact AlphaESS customer
service.
Check if the connection of N phase
of the grid,
If the problem has not been solved,
please contact AlphaESS customer
service.
Check if the off-grid phase is
insufficient,
If the problem has not been
solved, please contact AlphaESS
customer service.