18
5 Protection, Troubleshooting and
Maintenance
5.1 Protection
·
PV Array Short Circuit
If PV array short circuit occurs, clear it to resume normal operation.
·
Load Overload
If the load current exceeds the maximum load current rating, the controller
will disconnect the load. Overloading must be cleared up through reapply
power or pressing the setting button.
·
Load Short Circuit
Fully protected against load wiring short-circuit. After one automatic load
reconnect attempt, the fault must be cleared by reapply power or pressing the
setting button.
·
PV Reverse Polarity
Fully protection against PV reverse polarity, no damage to the controller will
result. Correct the miswire to resume normal operation.
·
Battery Reverse Polarity
Fully protection against battery reverse polarity, no damage to the controller
will result. Correct the miswire 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
℃
to prevent the
battery damaged from overcharging or over discharged.
·
Overheating Protection
If the temperature of the controller heat sink exceeds 85
C, the controller
will automatically start the overheating protection.
·
High Voltage Transients
PV
is protected against high voltage transients. In lightning prone areas,
additional external suppression is recommended.
