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Common solar system faults

At Watts & Ergon, we frequently help customers diagnose and fix solar system issues. Early detection can prevent major energy loss and extend the life of your investment.

By Watts & Ergon, – Leading Solar Energy Company in Dubai & UAE

Solar power systems are highly reliable, but like any technology, they can develop faults over time. Especially in the harsh UAE climate with extreme heat, dust, and sandstorms, regular monitoring and maintenance are essential.

At Watts & Ergon, , we frequently help customers diagnose and fix solar system issues. Early detection can prevent major energy loss and extend the life of your investment.

Most Common Solar System Faults

  • Soiling & Dust Buildup — The number one issue in desert regions
  • Inverter Failures or Errors
  • Hotspots on Solar Panels
  • Wiring and Connection Problems
  • Shading Issues
  • PID (Potential Induced Degradation)
  • Battery Faults (in hybrid/off-grid systems)
  • Ground Faults and Leakage

Common Solar System Faults – Summary Table

Fault Main Causes Common Symptoms Impact on Performance Recommended Solution
Soiling & Dust Sand, dust, bird droppings Sudden drop in daily production 20–40% loss Regular cleaning every 2–4 weeks
Inverter Failure Overheating, aging, grid issues No output, error codes, shutdown 100% system stop Firmware update, professional repair
Panel Hotspots Shading, cracked cells, dirt One area of panel very hot Permanent panel damage Thermal imaging inspection
Wiring & Connections Loose terminals, corrosion Intermittent power, burning smell Fire risk & energy loss Annual electrical tightening & check
Shading Trees, new buildings, poles Drop in output during specific hours 10–30% loss Trim vegetation or redesign layout
PID High humidity & voltage stress Gradual power decline across array 10–30% long-term loss PID resistant panels + proper grounding
Battery Problems Over-discharge, poor ventilation Reduced backup time, error alerts Poor energy storage Regular battery health check
Ground Faults Water ingress, damaged cables System shutdown, safety trip Complete shutdown Immediate professional diagnosis

Key Warning Signs Your Solar System Has a Fault

  • Sudden or gradual drop in daily energy production
  • Inverter showing error codes or red lights
  • Higher than normal electricity bills
  • Visible damage or discoloration on panels
  • Unusual noise from the inverter
  • Battery not holding charge (in hybrid systems)

How to Prevent Solar System Faults

  • Schedule professional cleaning at least once every month in dusty areas
  • Conduct thermal imaging inspections twice a year
  • Monitor system performance daily through mobile apps
  • Choose Tier-1 solar panels and inverters suitable for high temperatures
  • Sign up for a comprehensive Operation & Maintenance (O&M) contract
  • Perform annual full electrical and mechanical inspections

Why Choose Watts & Ergon, ?

Our expert team provides complete solar O&M services including regular cleaning, performance analysis, thermal drone inspections, fault diagnosis, and fast repairs.

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