system voltage.
Protection Function
Fault Symbol Indication
State
Symbol
Condition
LVD Protection
Battery empty and Warning Flash together
Battery Over Voltage Protection
Battery full and Warning Flash together
Controller Over Temperature
Protection
Temperature symbol and Warning Flash together
Solar Panel Over Voltage
Protection
Solar Panel symbol and Warning Flash together
The indicator lights flash
Normal charging
The indicator gradually on and off
PV voltage low can not start charging
The indicator off
Stop charging
Short Circuit and Reverse Connected Protection (Solar Panel)
When the solar panels have short circuit or reverse connection, the controller will be off the charging immediately, after
clearing of the short circuit, the charging will be automatically feedback.
Solar Panel Over Voltage Protection
When the input voltage from solar panel more than 150V, the controller will be off immediately, after input voltage
less than 145V the controller will be auto restart charging.
Reverse Connection of battery Protection
If the battery reverse connection, the controller will not destroy, corrected the connection the controller
will be normally working.
Note: since the controller can be started from the photovoltaic array end, the controller will be
damaged when the photovoltaic array is connected right and the battery end is reversed.
Battery Over Voltage Protection
When the battery voltage reaches the over-voltage cut-off point, the controller will automatically stop
charging and discharging the battery to prevent the battery and load from being damaged by the high
voltage of the battery.
Battery Low Voltage Protection (LVD)
When the voltage of battery was reach to LVD (Low Voltage Disconnection) point, the controller will be
auto closed the output in order to avoid over-discharge the battery.
Photovoltaic array over power protection
If the power of photovoltaic array exceeds the rated value of the controller, the controller can limit the
power or charging current to be within the rated range of the controller, so as to ensure that the controller
will not operate excessively.
Over Temperature Protection
When the internal temperature of the controller exceeds 75 ℃, the controller starts to alarm and reduce the charging
current. The temperature and warning flash. When the temperature exceeds 85 ℃, the charging is stopped. When the
temperature drops to 65 ℃, it will resume normal operation.
Lightning Protection
This product could only protect small lightning induction, we suggest users to use lightning rod at frequency area.