Why do solar inverters fail due to overheating?

Electrical components are highly sensitive to temperatures, and if the maximum operating temperature is reached, it may lead to a reduction in electricity production.

Common Solar Inverter Problems & Failures

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HomeSolarInformationWhy Do Solar Inverters Fail

       
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Solar power systems comprise of solar panels, inverters, batteries and a meter. As long as the solar PV system is installed properly, they remain low-maintenance devices. Electricity is generated by the solar panels while the solar inverters convert DC electricity to AC electricity to power the household appliances.

Solar inverters have more electrical components than solar panels. And they are much more sensitive to heat and equipment failure.

How Long Do Solar Inverters Last?

String solar inverters have a life expectancy of 10-15 years and micro inverters can last for 20-25 years.

Although they are rated to last for decades, many factors can affect the performance of the inverters such as:

Heat
Faulty installation
Humidity
Poor maintenance

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Why Do Solar Inverters Fail?

Overheating: Electrical components are highly sensitive to temperatures. If the maximum operating temperature is reached, it may lead to a reduction in electricity production. It is important to clean the dust filters regularly and ensure that the inverter has open airflow.

Grid Fault: High or low voltage due to a grid fault could prevent the inverter from working. Circuit breakers or fuses can be used to prevent the inverter from failure due to high voltage.

Maximum Power Point Tracking (MPPT): Solar panels generate different voltages – it is important to get the maximum efficiency irrespective of the different voltage levels. MPPT algorithms extract the maximum power from the solar panels. The MPPT tracker adjusts itself constantly to keep the solar panels at their Maximum Power Point. If you are experiencing reduced output, it could be due to a fault in the MPPT module.

Faulty Installation: A very common reason for failure in the solar inverter is faulty installation. If the solar panels are not matched with the inverter capacity, your inverter will not work efficiently. As a rule of thumb, your solar panel capacity should be up to 133% of the inverter capacity. For example, if you are using a 4 kW solar panel, your inverter capacity should be 3kW. If you are using a 6 kW solar panel, your inverter capacity should be 4.5 kW. Solar panels do not generate the power they are rated for

Fault codes: If your inverter is not working properly, it might show the error via a fault code. Refer to the inverter manual to troubleshoot the problem. Alternatively, you can see our troubleshooting guide for solar inverters.

What To Do if Your Solar Inverter Fails?

If your solar inverter is displaying a fault code or it is not restarting after a power outage, contact Fallon Solutions. Our CEC accredited solar electricians can diagnose and repair the solar inverter in a flash! We provide residential and commercial solar power solutions in Brisbane, Logan, Gold Coast, Ipswich, Moreton Bay and Redland.

Fallon Solutions Solar Electricians

Same-Day Service: Our electricians are available across Greater Brisbane, the Gold Coast and the Sunshine Coast so you never have to look far for our trusted technicians.

24/7 Emergency Electrician Service: We are proud to offer emergency electricians to residents of Greater Brisbane & the Gold Coast.

Excellent Customer Service: With thousands of 5-star reviews, we know the importance of quality customer service. Let us guide you through solar installation, repairs and services.

Highly Qualified & Knowledgeable: Our team of solar specialists are experts in their field. With up-to-date qualifications, insurance and extensive knowledge.

We aim to provide you with fast, reliable service with minimal impact to your day. Contact Fallon Solutions on 1300 054 488 or complete our online booking enquiry here.

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   Therese Kotzas 
 23 October 2026
 
 
  Chris Radcliffe was polite, friendly and professional.
  
 
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   Scott “ausscott” Franklin 
 22 October 2026
 
 
  Damien was very knowledgeable and helpful for our smoke detector installation
  
 
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   David Holmes 
 22 October 2026
 
 
  Chris R, arrived on time and very pleasant fellow with good knowledge of the dishwasher.
  
 
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   Alan 
 22 October 2026
 
 
  I recently had an Jarrad Pearson (Electrician) install some new power points at my place, one through splash back and one for a dishwasher - and I’m really happy with how everything turned out. Communication was quick and polite. They were punctual from start to finish, and the workmanship was neat and took care to match everything up. Everything looks clean, tidy, and exactly how I wanted it. There was a tricky part of the job going through brick that needed a bit of creativity, but they made it work and still kept the final result looking neat. Really appreciated the effort and care they put in. Would happily recommend them to anyone needing electrical work done, thanks Jarrad !
  
 
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   Graeme Curnow 
 22 October 2026
 
 
  Brynn, I appreciated your customer service skills, sociability and diligence which allowed you to make a sustained effort to get a full understanding of our old air-conditioning system and installation, in order for Falloon to quote for its replacement. Although Falloon missed out on the contract (because of the price) thanks to you I have no wish to move away from using Falloon for future maintenance jobs.
  
 
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   Marc Chesson 
 22 October 2026
 
 
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   Christopher Gough 
 22 October 2026
 
 
  Thanks jason for looking at the  cooktop
  
 
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   Sue Wallace 
 21 October 2026
 
 
  The service call and technician were excellent.  However the quote for the proposed work was emailed to me a week after the service call.  As this was a dishwasher issue we decided to purchase and install a new dishwasher as soon as possible.   I was told the quote was to be in email the afternoon of the service visit.
  
 
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   Mark Neumann 
 21 October 2026
 
 
  Lovely to have a real friendly person who communicated everything very well highly recommend
  
 
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   Jacqueline Williams 
 21 October 2026
 
 
  Eoin and Matthew from Fallon serviced our moldy AC units and gave us a solar battery installation quote, respectively. Both provided excellent service. Our AC units were addressed right away by Eoin, who was very professional and took care to ensure what could have been a pretty messy job wasn't.

Matthew was great and explained our solar options, the respective costs and rebates really well. He sat down with our bills and actually explained some things before designing the system. Once again, we appreciate the great service.

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Common Solar Inverter Problems & Failures.