Quick Answer
Okay, so here's the quick version. Your solar inverter is displaying an error code, which means it's detected an issue. Often, these are temporary glitches or protective shutdowns due to transient grid conditions. The first thing you should always try is a hard reset—safely shutting off both the AC and DC power to the inverter, waiting a few minutes, and then turning them back on. This costs nothing and resolves a surprisingly large number of problems. If that doesn't work, you might be looking at a more significant issue. Professional services or parts can range from an hour of labor for minor fixes (~$150-$350) up to $2,500-$6,000+ for a full inverter replacement.
Common Symptoms
Possible Causes
Step-by-Step Diagnosis
Step 1
Note the specific error code & check the manual or Google for its meaning.
Step 2
Perform a hard reset by shutting down AC power, then DC power, waiting 5 minutes, then powering on DC first, followed by AC.
Step 3
Visually inspect the inverter and surrounding area for clogged vents, loose wires, or signs of pests.
Step 4
Check all circuit breakers related to the solar system in both the main and any sub-panels to ensure none have tripped.
Step 5
If the inverter has a display, check the live output readings (voltage, current) to see if they are zero during daylight hours.
Step 6
Access the online monitoring portal (if you have one) to review historical data and detailed error logs from the system.
DIY vs Professional Costs
| Repair Type | DIY Cost | Professional Cost | Time Required |
|---|---|---|---|
Inverter Hard Reset | $0 | $0 - $150 (If a pro visit is for this alone, it's very low, usually part of another service or dispatch fee) | 10 minutes |
Cleaning Vents & Fins | $0 | Included in Routine Maintenance ($150-$400 for a visit) | 15 minutes |
Replacing a Cooling Fan | $20-$100 | $250-$600 | 1-2 hours |
Internal Board/Component Repair | Not Recommended | $500-$1800 (Often leads to full replacement due to labor/parts vs. new inverter cost) | 2-4 hours |
Full Inverter Replacement | $1,500-$4,500+ | $2,500-$6,000+ | 3-5 hours |
When to Call a Professional Solar
- If the error code persists immediately after a proper hard reset.
- If you see or smell any signs of burning, smoke, or visible electrical damage.
- For any error codes related to 'Arc Fault', 'Ground Fault', 'GFDI', or 'Isolation' as these are major safety issues.
- If the inverter is still under warranty, to ensure the repair is covered and doesn't void your protection.
- When you suspect an internal component has failed and you lack the expertise to work with high-voltage electronics.
- If the inverter is making loud, unusual noises like buzzing, whining, or frantic clicking.
Prevention Tips
- Ensure the inverter is installed in a cool, dry, well-ventilated area, away from direct sunlight.
- Keep the area around the inverter clear of obstructions to maintain proper airflow.
- Regularly clean inverter vents and cooling fins with a soft brush to prevent dust buildup.
- Schedule annual professional solar system maintenance for a health check.
- Monitor system performance regularly for dips in energy production, which can indicate early issues.
- Ensure pest deterrents are in place and conduit openings are sealed to prevent rodent damage.
Frequently Asked Questions
Related Guides
Your Solar App is Lying to You? (How to Manually Check Your Solar Production)
Solar monitoring app inaccurate? Your bill is high? A 25+ year tech shows you how to manually check your solar panels and inverter to find the real problem.
Solar battery backup fails to activate or provide electricity to a home during a utility grid outage, leading to a complete loss of power despite a solar-plus-storage system being installed and expected to operate during an outage. Troubleshooting & Fixes (2024 Guide)
Solar battery failed during a power outage? You're not alone. A veteran tech with 25+ years in the field shows you the common causes—from simple tripped breakers to a failed transfer switch—and what you can actually fix yourself.
Solar Panel Damage from Hail or Storms (Troubleshooting & Fixes)
Seeing hail damage on your solar panels or a drop in power? A 25+ year vet explains how to spot the problem, what to do, and when to call a pro.
Solar Monitoring App Not Working: Troubleshooting Communication Errors (2024 Guide)
Solar app not showing data? Get a veteran tech's guide to fixing communication errors yourself. Learn to reboot your system and fix connectivity issues fast.
Solar hot water system not heating water adequately, resulting in lukewarm or cold water. Troubleshooting & Fixes
Solar Inverter Error Code (Troubleshooting & Fixes)
Getting an error code on your solar inverter? A veteran tech with 25+ years of experience shows you how to troubleshoot the issue and figure out if it's a DIY fix or time to call a pro.
Need Professional Help?
Find top-rated solar experts in your area