What to do if the Epever TRIRON4210N Controller is not working even when the wire connection is correct?
If your Epever Controller isn't working despite correct wire connections, the battery voltage may be too low. Ensure the battery voltage is at least 9V to activate the controller.
Why is the charging LED indicator off on my Epever TRIRON4210N Controller during the day with proper sunshine on the PV modules?
The charging LED indicator might be off because of a PV array disconnection. Confirm that the PV and battery wire connections are correct and tight.
General| Model | TRIRON4210N |
|---|---|
| System Voltage | 12V/24V Auto |
| Rated Charge Current | 40A |
| Rated Discharge Current | 20A |
| Max PV Input Voltage | 100V |
| Max PV Input Power | 520W (12V) / 1040W (24V) |
| Efficiency | ≤98% |
| Temperature Compensation | -3mV/°C/2V(Default) |
| Type | MPPT |
| Communication | RS485 |
| Battery Type | Sealed, Gel, Flooded, User |
| Grounding | Negative Ground |
| Charge Algorithm | MPPT |
| Protection | Reverse Polarity |
| Operating Temperature | -25°C to 55°C |
Read all instructions and warnings before installation; avoid disassembly.
Introduction to TRIRON series controllers, modular design, and MPPT technology.
Safety precautions for battery handling, ventilation, and wiring.
Guidelines for PV module connection, voltage, and power.
Recommended wire sizes for PV array, battery, and load connections.
Details on PV and battery protection functions against overcurrent, short circuit, etc.
Common faults, possible reasons, and troubleshooting steps for controller issues.
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