Understanding Fault Code 1015 in Solar Power Inverters

If you’ve encountered fault code 1015 on your photovoltaic (PV) inverter, you’re likely dealing with a DC overvoltage issue. This error commonly occurs in solar energy systems when the input voltage from the panels exceeds the inverter’s maximum allowable limit. Let’s break down what this means for your system and how to resolve it efficiently.

Why Does Fault Code 1015 Happen?

• Excessive Solar Panel Output: Sudden spikes in sunlight intensity can push panel voltage beyond inverter thresholds.
• Temperature Fluctuations: Cold weather increases panel voltage output, raising DC input levels.
• Configuration Errors: Mismatched strings or incorrect wiring during installation.

“A 2023 study by SolarTech Analytics found that 42% of inverter faults in utility-scale projects relate to voltage irregularities, with code 1015 accounting for 18% of these cases.”

Step-by-Step Troubleshooting Guide

Immediate Safety Measures

Before troubleshooting:

• Disconnect the inverter from the grid
• Wait 5 minutes for capacitors to discharge
• Verify system grounding

Diagnostic Checklist

Checkpoint	Acceptable Range
Open-Circuit Voltage (VOC)	≤ Inverter max input
String Configuration	Per manufacturer specs

Prevention Strategies for Long-Term Stability

At EK SOLAR, we recommend these best practices:

• Install voltage-limiting devices
• Implement dynamic string sizing
• Use temperature-compensated designs

When to Seek Professional Help?

Contact our technical team at +86 138 1658 3346 or email [email protected] if:

• Fault recurs after basic troubleshooting
• System uses older (>5 years) components
• Multiple error codes appear simultaneously

FAQ Section

• Q: Can I reset fault code 1015 without repairs?A: Temporary resets may work, but root cause analysis is crucial.
• Q: Does warranty cover this fault?A: Depends on whether it’s caused by installation errors or equipment failure.

Need urgent assistance? WhatsApp our engineers: +86 138 1658 3346

Download Photovoltaic Power Inverter Fault Code 1015: Causes, Solutions, and Prevention [PDF]

Visit our Blog to read more articles