15
12.
Trouble Shooting.
Item
Problems
Possible Reasons
PCS Warning
Hardware failure
The possible reason:
The output is overloaded, or the output load is short-circuited, or
the battery is low-voltage protected, or the inverter is damaged.
Can try to restart it to check if it works normally.
PCS Over heated
The load is too heavy or the system is installed in somewhere with
high temperature and bad ventilation
AC voltage failure
The grid power is abnormal
Batter voltage failure
The battery voltage is too low or the battery is in low voltage
protection
The communication of PCS
with main control system
The main control system failed to communicate with PCS
MPPT Solar
Charger Failure
Battery voltage is low
No battery power, need be charged
Solar panel is over-current
Connect too much solar panel
PV input is over-voltage
Too much panel in series connection, and the PV input voltage
exceeds 150Vdc. Check if the solar panel connection and qty are
correct.
Controller is over
temperature
The solar panel power exceeds the max PV input power, or the
solar panel is installed in somewhere with high temperature and
poor ventilation
Lithium Battery
Protection
The LiFePO4 cell is
over-voltage protection
The internal cell is over charged. Just disconnect
charging, and discharge the battery with the load
The LiFePO4 cell is
low-voltage protection
No power in the battery. Need be charged in time or some
LiFePO4 cell is damaged.
The LiFePO4 pack is
over-voltage protection
The battery is over charged, just discharge the battery with the
load.
The LiFePO4 pack is
low-voltage protection
No battery power, need be charged in time
Over temperature
protection in charging
The set charge current is too big, or the product is installed in
somewhere with high temperature and poor ventilation
Low temperature protection
in charging
The ambient temperature is too low to charge
Over temperature
protection in discharging
Too much load or the product is installed in somewhere with high
temperature and poor ventilation
Low temperature protection
in discharging
The ambient temperature is too low to discharge
Over-current protection
In charging
The charging current setting is too high
Over-current protection
In discharging
Too much load
Short circuit protection
The load is too heavy or the battery is short-circuited or the
internal BMS is damaged
