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Can a Solar Inverter Be Repaired? [Updated 2023]

Picture of a solar inverter with sparks coming out of it can a solar inverter be repaired
Table of Contents

Can a Solar Inverter Be Repaired? The short answer is yes, solar inverters can often be repaired. Just like your car or any other appliance, when they develop problems, there are experts who can diagnose and fix the issues.

However, the feasibility of repair depends on factors like the nature of the problem, the age of the solar inverter, and warranty considerations. Sometimes, when an inverter is too old or severely damaged, it may be more cost-effective to replace it.

In this article, we’ll delve into the details of “Can A Solar Inverter Be Repaired”, helping you understand when repair is possible and when replacement may be the better option.

Key Takeaways

  • Regular Maintenance is Vital: Perform routine maintenance checks on your solar inverter to prevent common issues. Ensure proper ventilation, clean away dust and debris, and inspect connections regularly.
  • Age Matters: Solar inverters typically have a lifespan of 10-15 years. As they age, their efficiency can decline, and they may become more prone to failure. Consider replacement if your inverter is significantly outdated.
  • Diagnose and Address Problems Early: If you suspect a problem with your inverter, address it promptly. Monitoring energy production, checking fault codes, and consulting professionals can help identify and fix issues early.
  • Consider Warranty and Manufacturer Support: Be aware of your inverter’s warranty. Unauthorized repairs can void it. If your inverter is under warranty and has a significant problem, contact the manufacturer for support or repair options.
  • Professional Guidance Matters: When in doubt about your inverter’s condition or when facing complex issues, consult a solar professional or technician. Their expertise and diagnostic tools can ensure accurate assessments and repairs, maximizing your system’s performance.

Are Solar Inverter Repairs Possible?

Yes, solar inverter repairs are possible. Like fixing a broken appliance, experts can often repair them. If it’s too old or severely damaged, replacement might be necessary. You can contact your supplier or solar installer as they usually handle the repairs of your solar products. 

Example of a solar inverter repair. This video is not a tutorial but only for demonstration purposes to help you better understand the content in this blog.

When Should You Replace a Solar Inverter?

Knowing when to replace a solar inverter is vital to keep your solar energy system running smoothly. Here are a few specific examples of when it’s a good idea to replace a solar inverter:

  1. Old Age: If your solar inverter is well past its expected lifespan of 10-15 years, it’s likely time for a replacement.
  1. Severe Damage: When the inverter has suffered extensive internal damage, such as from a power surge or physical impact, replacement may be the only viable option.
  1. Technological Advancements: Newer inverters often come with improved efficiency and features. If your inverter is significantly outdated, upgrading to a more advanced model can make sense in terms of energy production and savings.
  1. Warranty Coverage: Attempting to repair an inverter without manufacturer authorization can void the warranty. If your inverter is under warranty and has a major issue, consider replacement under warranty terms.
  2. Consultation with a Professional: When you’re uncertain about the condition of your inverter or whether it’s worth repairing, seeking advice from a solar professional can provide valuable insights into whether replacement is the best option.

How Much Will It Cost to Replace a Solar Inverter?

To replace a solar inverter will depend on the size of your inverter. Most of the popular and good solar inverters range between R15,000 and R80,000 + for solar inverters. You can always recycle your old inverter and receive a credit from a recycling centre if your inverter cannot be repaired. 

If you are looking to replace your solar inverter, Off Grid Power Solutions has a wide selection of quality solar inverters for sale.

What Is The Lifespan Of A Solar Inverter?

The typical lifespan of a solar inverter ranges from 10 to 15 years. However, this can vary based on factors like the quality of the inverter, operating conditions, and maintenance. 

Regular maintenance and monitoring can help maximize its longevity. As inverters age, their efficiency may decrease, and they may become more prone to failures. Evaluating the age and performance of your inverter is essential for making informed decisions about replacement.

Why Do Solar Inverters Fail?

Solar inverters fail due to several reasons. Here are a few of the most common reasons why your inverter fails and why your solar inverters need to be repaired. 

Solar Inverter Overheating

Extreme heat can cause solar inverters to overheat, leading to performance degradation and potentially, failure. In hot climates or during scorching summer months, the inverter may work harder, accelerating wear and tear. Adequate ventilation and proper installation can help mitigate this issue.

Faulty Installation Of Your Solar Inverter

Inadequate or faulty installation can be a significant culprit in inverter failures. If the wiring, connections, or mounting of the inverter are not done correctly, it can lead to problems. Poorly installed inverters may be more susceptible to overheating or electrical issues.

Solar Inverter Humidity

Humidity, particularly in regions with high moisture levels, can pose a threat to the sensitive electronics within the inverter. Moisture can infiltrate the internal components, causing corrosion and short circuits. Proper weatherproofing and housing can help safeguard the inverter.

Poor Solar Inverter Maintenance:

Like any machine, solar inverters require regular maintenance to function optimally. Neglecting maintenance, such as not cleaning dust and debris from the inverter or ignoring routine checks, can result in reduced efficiency and eventual failure.

Signs of a Malfunctioning Solar Inverter:

Identifying the early signs of a malfunctioning inverter is crucial to preventing further damage. Signs may include:

  • Frequent fault codes or error messages are displayed on the inverter.
  • Unusual noises like buzzing or humming.
  • Reduced energy production from your solar panels.
  • Inconsistent or erratic performance of your solar energy system.

Addressing these signs promptly through professional diagnostics and repair can prevent more significant issues and extend the inverter’s lifespan.

Repairing A Solar Inverter

Reset Your Solar Inverter:

Sometimes, a simple solution is to reset the inverter. Just like restarting your computer, turning the inverter off and on can resolve minor glitches. Refer to the manufacturer’s instructions for the correct reset procedure.

Check Your Solar Inverter Fault Codes:

Modern solar inverters often have diagnostic systems that display fault codes when issues arise. These codes are like a language the inverter uses to communicate the problem. Understanding the codes can help diagnose the issue accurately, making it easier to decide on the appropriate repair action.

Check Your Solar Inverter’s Warranty:

Before attempting any repair, check the warranty on your solar inverter. Repair attempts that aren’t authorized by the manufacturer can void the warranty. If your inverter is still under warranty and has a significant issue, it’s often advisable to contact the manufacturer or authorized service provider for repairs or replacement.

Solar Inverter Manufacturer Support:

Manufacturers often provide technical support and authorized repair services for their inverters. Contacting the manufacturer can be a reliable way to ensure proper diagnostics and repairs. They can guide you through the process or connect you with certified technicians who specialize in their products.

Overall, the steps for repairing a solar inverter should be taken cautiously, with consideration of the inverter’s warranty and manufacturer support. In some cases, a professional technician may be the best option to ensure a successful repair without voiding the warranty

How Do You Know If The Solar Inverter Is The Issue?

Identifying whether the inverter is the issue in your solar energy system can be done through a series of observations and troubleshooting steps:

1. Monitoring Power Output:

If you notice a significant drop in your solar system’s power output, it could indicate an inverter problem. Compare your current energy production to your system’s historical performance.

2. Checking the Inverter Display:

Most modern inverters have digital displays that show their operating status. Check for error messages, fault codes, or unusual readings on the display. These can provide valuable clues about the inverter’s condition.

3. Listening for Unusual Sounds:

Inverters should operate quietly. If you hear buzzing, humming, or other unusual noises coming from the inverter, it may indicate a problem.

4. Visual Inspection:

Physically inspect the inverter for signs of damage, loose connections, or overheating. Look for burn marks, loose wires, or any obvious issues.

5. Monitoring Real-Time Performance:

Use a monitoring system, if available, to track your solar system’s real-time performance. Sudden drops or irregular patterns in energy production can signal an inverter problem.

6. Comparing with Other System Components:

If you have multiple inverters in your system, compare the performance of each one. If one inverter is consistently underperforming or showing issues, it may be the culprit.

7. Professional Inspection:

When in doubt or if you suspect an inverter issue but can’t pinpoint the problem, it’s advisable to consult a solar professional or technician. They have the expertise and diagnostic tools to assess the entire system and determine if the inverter is the issue.

Common Solar Inverter Problems

Common solar inverter problems can arise due to various factors, and addressing them promptly is crucial to maintaining the efficiency of your solar energy system. Here are some of the most frequent issues:

  1. Overheating: Solar inverters can overheat, especially in hot climates or if they’re exposed to direct sunlight. This can lead to reduced efficiency and, in severe cases, component damage.
  2. Faulty DC Connections: Loose or damaged DC (direct current) connections between the solar panels and the inverter can disrupt the flow of electricity, causing performance issues.
  3. Grid Voltage Variations: Fluctuations in the electrical grid’s voltage can stress the inverter. If grid voltage is unstable, it can lead to frequent inverter shutdowns or reduced efficiency.
  4. Internal Component Failure: Over time, internal components like capacitors, diodes, and transistors may fail, affecting the inverter’s functionality.
  5. Dust and Debris: Accumulation of dust and debris on the inverter’s cooling vents can hinder proper ventilation, leading to overheating.
  6. Humidity and Moisture: High humidity levels can potentially cause moisture to seep into the inverter, leading to corrosion or short circuits.
  7. Software or Firmware Issues: Software or firmware glitches can sometimes cause inverter malfunctions or communication problems.
  8. Age and Obsolescence: Inverters have a finite lifespan (typically 10-15 years). As they age, they may become less efficient and more prone to failure. Additionally, older models may lack the features and efficiency of newer ones.
  9. Wiring and Cable Problems: Faulty wiring, cable damage, or improper connections can hinder the inverter’s ability to convert DC to AC power effectively.
  10. Lightning Strikes and Power Surges: In some cases, lightning strikes or power surges from the grid can damage the inverter’s internal components.

It’s essential to monitor your solar energy system regularly and address any issues promptly. If you suspect a problem with your solar inverter, consult with a solar professional or technician for a thorough diagnosis and appropriate repairs. Regular maintenance and periodic checks can help prevent many of these common issues and extend the lifespan of your solar inverter.

Conclusion: Can A Solar Inverter Be Repaired?

Solar inverters are the essential workhorses of your solar energy system, converting sunlight into usable electricity. While they can encounter various issues over time, proactive maintenance, early problem detection, and professional guidance can help keep your system running efficiently. 

When considering the question “Can a solar inverter be repaired,” it’s clear that with the right approach, many issues can be addressed, ensuring a sustainable and reliable source of clean energy for your home.


Can all types of solar inverters be repaired?

Yes, most types of solar inverters can be repaired, including string inverters, microinverters, power optimizers, and hybrid inverters.

Are DIY repairs for solar inverters recommended?

No, DIY repairs are not recommended. Seek professional help for inverter repairs.

What should I do if my inverter is still under warranty and needs repair?

Contact the manufacturer or authorized service provider for warranty repairs.

How can I tell if my solar inverter needs repair?

Look for signs like reduced energy production, strange noises, fault codes on the inverter, or erratic system performance.

Is repairing a solar inverter more cost-effective than replacing it?

Cost-effectiveness depends on the issue’s severity, inverter age, and warranty. Minor issues are often cheaper to repair, but older or extensively damaged inverters may be better replaced.

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