Common Issues with PV Combiner Boxes and How to Fix Them
Top 5 Common Issues
- Loose wiring or terminals
- Blown fuses due to overcurrent
- Water ingress (especially in outdoor boxes)
- Rust or corrosion on terminals
- String current imbalance
Prevention Tips
Use high-quality enclosures, monitor string current, and perform periodic inspections.
Conclusion
Proactive maintenance and regular checks will extend the life of your PV combiner box and ensure your solar investment pays off.
