Quick Answer
The direct answer is generally good. Perhaps add a sentence about checking the main breaker for the solar system if the inverter is completely off, before assuming a full inverter failure. Also, explicitly mention checking the inverter display for error codes/messages if it's on but not producing.
Common Symptoms
Possible Causes
Step-by-Step Diagnosis
Step 1
Check the Inverter (The Source of Truth) - Look at the screen and status lights for error codes or lack of power production.
Step 2
Do a Visual Inspection from the Ground - Look for obvious dirt, debris, snow, or new shading on the panels.
Step 3
Check the Disconnects - Ensure the AC and DC disconnect switches are in the 'ON' position.
Step 4
The Inverter 'Reboot' - Follow the manufacturer's procedure to shut down and restart the system.
Step 5
Check Your Utility Meter - See if your smart meter is registering power being sent back to the grid.
Step 6
The Pro-Level Check - This involves using a multimeter to test voltage and current at the panel or string level and should be done by a professional.
DIY vs Professional Costs
| Repair Type | DIY Cost | Professional Cost | Time Required |
|---|---|---|---|
Cleaning Solar Panels | $0–$50 | $150–$400 | 1-3 hours |
Inverter Replacement (String) | Not Recommended | $2,000–$5,000+ | 3-5 hours |
Panel / Optimizer Replacement | Not Recommended | $400–$1,000+ | 2-4 hours |
Wiring Repair / Critter Guarding | Not Recommended | $500–$2,000+ | 2-6 hours |
When to Call a Professional Solar
- The inverter displays error codes like 'Ground Fault' or 'Arc Fault' that don't clear after a reset.
- You observe any physical damage like cracked panels, burn marks, or chewed/dangling wires.
- Production remains low after you've cleaned the panels and confirmed the system has been properly reset.
- You suspect any internal electrical issues or a problem that requires opening a panel or junction box.
- Your system is still under warranty – call your installer first to avoid voiding it.
Prevention Tips
- Regularly clean solar panels (every 6-12 months) to remove dirt and debris.
- Periodically inspect panels from the ground for any visible damage or significant shading.
- Monitor your system's production regularly through the provided online portal to catch drops early.
- Trim trees to prevent shading and install critter guards to prevent animal damage.
- Keep the inverter area clear and well-ventilated to prevent overheating.
Frequently Asked Questions
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