Quick Answer
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Common Symptoms
Possible Causes
Step-by-Step Diagnosis
Step 1
Perform a simple visual inspection from the ground. Use binoculars to get a closer look for dirt, damage, or debris without climbing on the roof.
Step 2
Log into your solar monitoring system or check your inverter's display. Compare recent production data with historical data from the same time last year.
Step 3
Observe your roof at different times on a sunny day (morning, noon, afternoon) to identify any new or previously unnoticed shading patterns.
Step 4
Step startling birds or seeing chewed material near the panels.
Step 5
Check the inverter display screen for any specific error codes or warnings. Write down any codes you see.
DIY vs Professional Costs
| Repair Type | DIY Cost | Professional Cost | Time Required |
|---|---|---|---|
Routine Panel Cleaning | $20-75 | $150-700 | 1-3 hours |
Minor Tree Trimming | $0-50 | $150-600 | 0.5-2 hours |
Critter Guard Installation | $200-500 | $600-1500 | 3-5 hours |
Electrical Diagnosis/Repair | $15-50 | $250-1000+ | Highly Variable |
When to Call a Professional Solar
- If you see any physical damage like cracked glass, a bent panel frame, or loose mounting hardware.
- If the inverter is showing an error code, especially one that indicates a 'fault'.
- If energy production is significantly down even though the panels are clean and it's sunny.
- If you have a confirmed pest infestation under the panels, as wiring may be damaged.
- If your roof is too high, steep, or otherwise unsafe for you to access the panels yourself.
- For an annual or biennial full system check-up to ensure all electrical components are working correctly.
Prevention Tips
- Clean panels annually or biannually with a soft brush and water, especially after pollen season.
- Check your monitoring app monthly to catch any downward trends in energy production early.
- Regularly trim back any nearby trees or large shrubs to prevent future shading issues.
- Install critter guards around the array's perimeter to block birds and squirrels from moving in.
- Perform a quick visual inspection from the ground every few months to spot obvious problems.
- Never use a pressure washer or walk on your solar panels, as this can cause permanent damage.
Frequently Asked Questions
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