User Manual

45
5 Protection, Troubleshooting and Maintenance
5.1 Protection
• PV Array Short Circuit
If PV array short circuit occurs, clear it to resume normal charge automatically.
• Load Overload
If the load current exceeds the rated current of controller（≥1.05 times rated discharge
current）, the controller will disconnect the load. Overloading must be cleared up, then
pressing the switch button.
• Load Short Circuit
Fully protected against load wiring short-circuit（≥2 times rated discharge current）. After
one automatic load reconnect attempt, the fault must be cleared by restarting the
controller or pressing the switch 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.
• Battery working voltage error
If battery voltage does not match controller working voltage, controller will stop working.
After correcting the voltage, the failure can be eliminated through pushing load button.
• Damaged 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℃, the controller will
automatically start the overheating protection and stop the charging and discharging.
When the temperature is below 75℃, the controller will resume to work.