EPEVER Solar Charge Controller: “Green LED fast flash — battery”
warning RV solar charge controller error codes
What it means
The battery-status indicator flashing green at about 4 Hz means battery over-voltage: battery voltage has reached the Over Voltage Disconnect (OVD) threshold, so the controller stops charging to prevent overcharge damage.
Most likely causes
- Charging voltage parameters set too high for the installed battery type (wrong battery type selected) most likely
- Another charge source (alternator, AC charger) raising battery voltage above OVD at the same time common
- Faulty or unbalanced battery cell reading high, or loose/corroded battery sense connection less common
Safe checks you can do yourself
- Measure battery terminal voltage and compare to the controller's OVD setting for the selected battery type
- Verify the battery type setting matches your actual battery (sealed/gel/flooded/LiFePO4/etc.)
- Check for a second charger feeding the same bank and check battery cable connections for tightness/corrosion
How to reset / clear Green LED fast flash — battery
- Reduce the charge: temporarily disconnect the PV so battery voltage falls below the Over Voltage Reconnect threshold
- Correct the battery-type or custom voltage settings to match the battery
- Charging resumes automatically once voltage drops below the reconnect threshold
When to call a technician
If battery voltage repeatedly exceeds OVD with correct settings and a single charge source, or a battery is hot/swollen, stop charging and consult a technician — the battery or controller may be faulty.
Applies to
EPEVER Triron N series · EPEVER Tracer-AN series (Tracer1206AN/2206AN and larger) · EPEVER Tracer-BN/BP MPPT series
FAQ
What does EPEVER Solar Charge Controller code "Green LED fast flash — battery" mean?
The battery-status indicator flashing green at about 4 Hz means battery over-voltage: battery voltage has reached the Over Voltage Disconnect (OVD) threshold, so the controller stops charging to prevent overcharge damage.
How do I reset EPEVER Solar Charge Controller Green LED fast flash — battery?
Reduce the charge: temporarily disconnect the PV so battery voltage falls below the Over Voltage Reconnect threshold Correct the battery-type or custom voltage settings to match the battery Charging resumes automatically once voltage drops below the reconnect threshold
What is the most common cause of Green LED fast flash — battery on a EPEVER Solar Charge Controller?
The most likely cause is charging voltage parameters set too high for the installed battery type (wrong battery type selected).
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Sources
- EPEVER TRIRON N Series Modular MPPT Solar Charge Controller User Manual — TRIRON-SMS-EL-V1.2, Section 4.1 LED indicators — Battery LED: Green Fast Flashing (4Hz) = Over voltage; Section 6.2 Troubleshooting (Battery over voltage) (EPEVER (Huizhou EPEVER Technology Co., Ltd.))
- MPPT Solar Charge Controller User Manual, Tracer1206AN/Tracer2206AN (Tracer-AN series) — Tracer-AN-Manual-EN-V2.6, Section 4.2 Troubleshooting — Battery over voltage: battery frame blink, fault icon blink; check if battery voltage > OVD and disconnect PV (EPEVER (Huizhou EPEVER Technology Co., Ltd.))
Note: On the Tracer-AN LCD/icon models this fault appears as a blinking battery frame plus blinking fault icon rather than a colored LED.
● Last verified 2026-06-29 · compiled from manufacturer documentation. Codes can vary by model year — always cross-check your unit’s manual.