Khamson Technologies

27/10/2025

SOME COMMON ERROR CODE AND THIER

MEANING IN FELICITY INVERTER

Here’s a list of common Felicity inverter error codes and their meanings — these codes may vary slightly depending on your model (e.g., Felicity 1.5kVA, 3.5kVA, 5kVA, 7.5kVA hybrid, etc.), but these are generally accurate across most Felicity solar inverters:

---

⚠️ Felicity Inverter Error Codes and Meanings

Error Code Meaning / Description Possible Cause Recommended Action

E01 Battery Low Voltage Battery voltage dropped below safe level Check battery terminals and voltage; recharge batteries fully.
E02 Battery Over Voltage Input voltage too high Check battery bank connection; ensure correct voltage and polarity.
E03 Output Overload Load exceeds inverter capacity Reduce load; check for short circuit in connected devices.
E04 Output Short Circuit Short circuit on output line Disconnect all loads; inspect wiring and appliances.
E05 Over Temperature Inverter internal temperature too high Ensure ventilation; clean dust; reduce load.
E06 Fan Failure Cooling fan not working Inspect or replace cooling fan.
E07 Input Over Voltage (Solar) PV voltage too high Verify solar panel configuration; reduce number of panels in series.
E08 PV Low Voltage / No PV Input Solar input too low or disconnected Check solar panel connections and voltage level.
E09 Overcharge Protection Battery charging current/voltage too high Check charge controller and battery health.
E10 AC Input Abnormal Grid voltage or frequency out of range Check grid power source; verify wiring.
E11 Communication Failure Communication lost between inverter modules Reconnect communication cables or reset inverter.
E12 EEPROM Error / System Fault Internal program or data error Restart inverter; if persistent, contact service center.
E13 DC Bus Over Voltage DC link voltage too high Check battery and PV configuration.
E14 DC Bus Low Voltage DC link voltage too low Check battery charge status.
E15 Inverter Relay Stuck Output relay malfunction Contact technician or service center.
E16 PV Reverse Polarity PV positive/negative terminals reversed Disconnect panels, correct polarity, and reconnect.
E17 Battery Reverse Polarity Battery connection reversed Disconnect battery and correct polarity immediately.
E18 Current Sensor Fault Internal current detection issue Restart inverter; if persists, service needed.

---

💡 General Troubleshooting Tips

1. Always turn off inverter before checking wiring.

2. Check battery terminals for corrosion or loose connections.

3. Confirm correct PV voltage and polarity before reconnecting.

4. Ensure inverter is in a well-ventilated area to avoid overheating.

5. If multiple errors persist, reset the inverter or contact a Felicity service center

27/10/2025

23/10/2025

HOW TO EVALUATE SOLAR PANELS BEFORE
BUYING OR DURING USE

1. Power Output (Wattage)

Measured in watts (W) — tells how much power the panel can produce under standard conditions.

Example: a 300W panel produces 300 watts under ideal sunlight.

2. Efficiency

Indicates how much sunlight is converted into usable electricity.

Typical range: 15–23%.

Higher efficiency = more power from the same space.

3. Temperature Coefficient

Shows how performance changes with heat.

The lower the coefficient, the better it performs in hot weather.

Example: –0.4%/°C means power drops 0.4% for each degree above 25°C.

4. Durability and Build Quality

Check the frame material, glass thickness, and cell quality.

Panels should resist corrosion, moisture, and wind pressure.

Look for certifications like IEC 61215 and IEC 61730.

5. Warranty

Quality panels offer:

Product warranty: 10–15 years

Performance warranty: 25 years (should retain 80–85% output)

6. Degradation Rate

Describes how the panel loses efficiency over time.

Good panels degrade less than 0.5% per year.

7. Type of Panel

Monocrystalline: High efficiency, long lifespan.

Polycrystalline: More affordable, slightly less efficient.

Thin-film: Lightweight, flexible, but lower efficiency.

8. Real-World Performance

Evaluate actual output under your local sunlight (irradiance) and temperature conditions.

You can measure daily energy production (kWh/day) and compare it to expected output.

22/10/2025

SOLAR PANELS EFFICIENCY

Solar panel efficiency means how well a solar
panel can convert sunlight into usable electricity.

It is expressed as a percentage (%) — showing how much of the sunlight that hits the panel is turned into electrical power.

For example:

If a panel has 20% efficiency, it means that 20% of the sunlight that reaches it is converted into electricity, while the rest is lost as heat or reflected away.

🔹 Example:

If 1000 watts of sunlight fall on 1 square meter of a solar panel:

A 20% efficient panel will produce 200 watts of electricity.

A 15% efficient panel will produce 150 watts from the same sunlight.

🔹 Factors that affect solar panel efficiency:

1. Type of solar cell (monocrystalline, polycrystalline, thin-film, etc.)

2. Quality of materials used

3. Temperature — high heat can reduce efficiency

4. Dirt, dust, or shading on the panel surface

5. Angle and direction of installation

6. Age and degradation of the solar panel over time

08/07/2024

237.4K likes, 9493 comments. “stay silent 🔕 Best Motivational Speech. Life Lesson, Must Watch.”

21/06/2024

5620 likes, 531 comments. “Stop wasting economic hours in church. Learn to know and grow your business. Be faithful. ...

05/06/2024

5136 likes, 135 comments. ““Ambode na my Junior for FGC Warri” - Dr Charles Apoki”