5. Protections, Troubleshooting and
Maintenance
5.1 Protection
PV Array Short Circuit
If PV array short circuit occurs, clear it to resume normal operation.
PV Overvoltage
If PV Overvoltage occurs, the array will remain disconnected until the voltage
falls safely below the maximum rating.
PV Overcurrent
If PV Overcurrent occurs, the array will be disconnected automatically.
Load Overload
If the load current exceeds the maximum load current rating, the controller will
disconnect the load. Reapplying power or pressing the setting button will clear up
the overloading fault.
Load Short Circuit
Fully protected against load wiring short-circuit. After one automatic load
reconnect attempt. Reapplying power or pressing the setting button will clear the
fault.
PV Reverse Polarity
Full protection against PV reverse polarity, no damage to the controller will result.
Correct the wire connection to resume normal operation.
Battery Reverse Polarity
Full protection against battery reverse polarity, no damage to the controller will
result. Correct the wire connection to resume normal operation.
Damaged Local Temperature Sensor
If the temperature sensor short-circuited or damaged, the controller will be
charging or discharging at the default temperature 25°C to prevent the battery
damaged from overcharging or over discharged.
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