Solar System Troubleshooting Step-by-Step Guide

Name: LocalBusiness
Brand: Helcro Solar
Rating: 5 (90 reviews)

Inverter showing an error? Output lower than expected? This guide walks you through the safe checks every Helcro Solar client can do, and tells you exactly when to stop and call us. Backed by our team's 18 years of solar panel installation in Melbourne.

Call 1300 435 276 Contact Us

5.0 out of 5 on Google

Helcro Solar · South Melbourne

Quick Checks Before You Call

Run through these first, in order.

Check the inverter display for lights or error codes

Check the solar breaker in your switchboard

Rule out weather, shading and dirty panels

Try one safe power cycle during daylight hours

Photograph any error code before calling

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Solar System Troubleshooting

What to Check When Your Solar System Stops Working

Most solar faults show up in one of two places: the inverter or your switchboard. Check your inverter first for any lights or error codes, then check the solar circuit breaker in your switchboard, labelled Solar PV, Inverter Supply or Solar System. If the breaker has tripped, reset it once. If it trips again, stop and contact our electrical services team.

It is also worth checking your home network. Many modern inverters rely on a Wi-Fi or ethernet connection to report production data to your monitoring app. If your modem is offline or the signal is weak, the app may show no data even when the system is running normally. Restart your modem and check that the inverter is connected before concluding there is a fault. For solar power system clients installed by us, our team can often diagnose the issue remotely once connectivity is restored.

Low Output

Why Your Solar Energy Production Seems Lower Than Expected

Lower production does not always mean a fault. These four causes account for the majority of output drops and none of them require a service call on their own. Check each one before contacting us.

Weather Conditions

Overcast, rainy or stormy weather naturally reduces production. Compare your output against similar weather days rather than your summer peak, and check your monitoring app for a pattern.

Shading and Dirt

New trees, buildings, bird droppings or built-up dust can shade your panels. Even a small amount of shading on one panel can significantly reduce the output of the whole system.

Tesla solar battery installation in extreme conditions

Extreme Heat

Solar panels are less efficient in very high temperatures. While they need sunlight to work, extreme heat reduces overall output. This is normal and production returns to usual levels as temperatures moderate.

Normal Degradation

All solar panels experience a gradual decrease in efficiency over their lifespan. This is a normal part of aging, not a fault. Quality panels are warranted to produce at least 80% of their original output after 25 years.

If none of these common causes apply and you are still seeing consistently low production, give us a call on 1300435276. Persistent underperformance can indicate a panel, wiring or inverter issue worth diagnosing early before it worsens.

Low Output

Why Your Solar Energy Production Seems Lower Than Expected

Lower production does not always mean a fault. These four causes account for the majority of output drops and none of them require a service call on their own. Check each one before contacting us.

Grid Connection Issues

Triggered when grid voltage or frequency is outside the normal range. The inverter shuts down as a safety measure and should restart automatically once the grid stabilises. If the error persists and does not clear on its own, the issue may be with your local electricity network rather than your system.

Low DC Voltage

Means there is not enough sunlight to start the system. This is common in the early morning or on very cloudy days and typically clears on its own as sunlight increases. If this error appears mid-afternoon on a clear day, it may point to a wiring or panel fault worth investigating.

Internal Faults

Point to a problem with the inverter's internal components. These will not resolve with a reboot and require a professional diagnosis. Common causes include failed capacitors, communication board issues, or IGBT failure. Do not attempt repeated resets; contact Helcro Solar for an assessment.

Safe Reset

How to Safely Reboot Your Solar System

A power cycle safely disconnects the inverter from both the panels and the grid, and resolves many common faults like communication errors and minor failures. Complete this process during daylight only. If you encounter any safety hazard at any step, stop immediately and call 1300 435 276.

STEP 01

Turn Off the Solar Supply Main Switch

Locate the solar breaker in your home's main switchboard. It should be labelled Solar PV, Inverter Supply or Solar System. Switch it to the OFF position.

STEP 02

Turn Off the Inverter DC Isolator

Find the DC isolator switch on the side or bottom of the inverter. This switch controls the power coming directly from the solar panels. Turn it to the OFF position.

STEP 03

Wait 30 to 60 Seconds

Allow the inverter's internal components to fully discharge and reset. The display screen should go blank and all indicator lights should turn off before you proceed.

STEP 04

Turn the DC Isolator Back On

Reverse the sequence, starting with the DC isolator switch on the inverter. Turn it back to the ON position before touching the main switchboard.

STEP 05

Turn the Main Switch Back On

Return to the switchboard and switch the Solar PV breaker ON. The inverter reboots within a few minutes to 30 minutes. A steady green light or a message saying Normal, Working or Grid Tie confirms the system is running.

Safety First

When You Should NOT Restart Your Solar System

A power cycle is safe for minor faults, but in the situations below do not touch the system. Shut it down using the switchboard only if safe to do so, and call Helcro Solar immediately on 1300 435 276.

Smoke, Fire or Burning Smells

Any sign of smoke, fire or unusual burning smells from the inverter or any part of the system is a serious safety hazard. Do not touch the equipment. Shut down via the main switchboard only if safe, evacuate if necessary, and call us immediately.

Physical damage to solar system components

Physical Damage to the System

Cracks, exposed or burned wires, or signs of water ingress after a storm or flood mean the system could still be live and pose a risk of electric shock. Do not attempt a restart or touch any component until inspected by a licensed electrician.

Unusual Sounds: Buzzing or Sparking

A quiet hum from the inverter is normal. Loud buzzing, crackling or sparking sounds indicate a dangerous electrical fault. Keep clear of the inverter and any associated wiring, and call a professional.

Wet or Flood-Affected Equipment

Never handle or reset your inverter, switchboard, or any part of the solar system if it is wet or has been affected by flooding. Water and electricity are a dangerous combination. Wait for the system to be assessed by a licensed electrician before restoring power.

Electrical faults returning after system resets

Repeated Faults After Resetting

If the same error code or fault light reappears immediately or frequently after a reset, there is a deeper underlying problem. Repeated resets put stress on the system and do not fix the root cause. Contact Helcro Solar for a proper diagnosis.

Stuck Switches or Grid Voltage Errors

Never force a stiff or stuck isolator switch. Forcing it can damage the switch or create an internal hazard. A high grid voltage error that does not clear on its own is also an issue for your electricity distributor or our technicians to investigate.

Smoke, burning smells, sparking or storm damage? Do not touch the system. Shut it down only if safe, and call emergency immediately.

Call Emergency: 000

Customer Reviews

What Melbourne Homeowners Say About Helcro Solar

"Mitch from Helcro Solar was worth his weight in gold. Knowledgeable, courteous and extremely efficient. I would recommend this company to anybody without hesitation."

Peter & Kelly

Melbourne

"The team turned up and were very efficient, courteous and explained everything clearly. Their work was very neat and they cleaned up and took all the packaging away. Battery was fully operational within 3 days."

Geoff H

South East Melbourne

"Their admin team was efficient, and the billing stages went exactly as they said they would. Helcro contacted me several times throughout the process to give updates. Very professional from start to finish."

Melbourne Homeowner

Victoria

5.0 out of 5 on Google

Helcro Solar · South Melbourne

Frequently Asked Questions

Common Solar System Troubleshooting Questions

These are the questions our clients ask most often when something does not look right with their system. If your question is not answered here, our team is available seven days a week.

Call 1300 435 276

My solar system has stopped working. What should I check first?

Check your inverter first for any lights or error codes. A red or orange light or a code on the display usually indicates a fault. Then check the solar circuit breaker in your switchboard, labelled Solar PV, Inverter Supply or Solar System, and reset it once if it has tripped. It is also worth restarting your modem: if the inverter loses its Wi-Fi or ethernet connection, your monitoring app may show no production data even while the system is running normally. If the breaker keeps tripping, or issues persist after the modem is back online, call Helcro Solar on 1300 435 276 for a professional diagnosis.

Why is my energy production lower than expected?

Low production is most commonly caused by one of four things: weather, shading, extreme heat, or normal panel degradation. Overcast or rainy conditions naturally reduce output, and it is worth comparing against a similar weather day rather than your peak summer performance. New trees, buildings, dirt or bird droppings can shade panels, and even a small amount of shading significantly impacts the system. Solar panels are also less efficient in extreme heat, and all panels experience a slight efficiency loss over their lifespan. If none of these apply and production remains consistently low, call us on 1300 435 276.

Could a network or Wi-Fi issue cause my solar system to appear offline?

Yes. Most modern inverters use Wi-Fi or ethernet to send production data to your monitoring app. If your modem is offline, restarting or experiencing a weak signal, the app may show no data or display an error even when the solar system itself is running fine. Before assuming a fault, restart your modem, wait for it to fully reconnect, and check whether the inverter re-establishes its connection. If production data returns to normal, the issue was network-related rather than a system fault. If the app still shows no data after the modem is back online, call us on 1300 435 276.

How long does a solar inverter take to restart?

After a safe power cycle, a solar inverter can take anywhere from a few minutes up to 30 minutes to fully reboot and reconnect to the grid. You will know it is working correctly when you see a steady green light or a message on the display that says Normal, Working or Grid Tie. If the display stays blank or the same fault reappears after the reboot, do not attempt further resets. Contact Helcro Solar on 1300 435 276 for a diagnosis.

When should I call Helcro Solar instead of troubleshooting myself?

Call Helcro Solar on 1300 435 276 immediately for any safety risk: smoke, burning smells, sparking, visible physical damage, or a system that is wet or flood-affected. Also call if your circuit breaker keeps tripping after a single reset attempt, the same error code returns immediately after a restart, a high grid voltage error will not clear on its own, or an isolator switch feels stuck or stiff. For everything else, one safe daylight power cycle is a reasonable first step before calling. Having the error code photographed and the fault start time noted will help us resolve your issue faster.

Melbourne Service Areas

Solar Servicing Across Greater Melbourne

Helcro Solar services solar systems across Melbourne's inner, middle, and outer suburbs, as well as the Mornington Peninsula and greater Victoria. Our South Melbourne base means fast response times across the metropolitan area.

South Melbourne Malvern
Elwood Glen Waverley Brighton

Dandenong Rowville St Kilda Frankston Cheltenham

Williamstown
Yarraville
Oakleigh
Mornington Mount Eliza

Keysborough
Springvale
Mulgrave
Burwood Altona

Not sure if we service your area? Contact our team and we will confirm availability for your suburb.

Still Having Solar Issues? We Are Here to Help.

If a safe reset has not resolved the fault, or you have spotted any of the warning signs above, our CEC-accredited technicians can diagnose and repair your system. Photograph any error codes, note when the issue started, and get in touch.

1300 435 276

   
     
  5.0 90 reviews 
 
  
        
   Helcro Solar
   5.090 Google reviews 
 
 
 
        Posted on Google  
   
   TRELOS Gamias 
 
 
 
 Trustindex verifies that the original source of the review is Google.  Helcro Solar have a special talent for honesty, integrity and a rare quality these days helping the customer achieve what they want! Gabriel was outstanding and everybody at Helcro that follows included as a Family! The customer service is second to none, knowledge and the after support is extroadinary! Extremely highly recommended for proven brilliance in honesty and pure knowledge of the industry and products! BILLY
  
 
 
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   Chris Hare 
 
 
 
 Trustindex verifies that the original source of the review is Google.  ALL aspects of my experience with Helcro Solar have been 5 Star, right from the initial contact regarding a quote. I must also add there was NEVER any pressure from the Sales Team, infact we got a quote and never actioned our committment until a couple of months later due to juggling finances.
The quote was very easy to understand and Grant helped to recommend an installation to suit our desires.
The install was completed by Hristian and his Team and i cannot speak highly enough of these guys. They were all very friendly, happy to answer any questions, did an AMAZING job on the install. All my wiring is concealed. All work areas were left cleaner after installation than they were before.
Once again i can't speak highly enough of the whole process.......and it might sound strange but i'm looking forward to receiving my first electricity bill, not that i think it will be uch at all.
Top Notch.
Thanks heaps
Chris Hare
  
 
 
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   Andy M 
 
 
 
 Trustindex verifies that the original source of the review is Google.  Thank you so much for everything. From Gabriel in sales all the way to the installation team and after instal sales support. Couldn’t have gotten a better experience, highly recommend. And thank you Ben, you made everything so much easier for me. 5 stars!!! ⭐️⭐️⭐️⭐️⭐️
  
 
 
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   Martin Hopley 
 
 
 
 Trustindex verifies that the original source of the review is Google.  11.4kW Solar system with 24.96kWh battery storage
Jinko Solar Tiger Neo III and GoodWe GW8.3-BAT-D-G20

After much research I went with Helcro Solar, and I am so glad I did. From the start they have been amazing, and the system was installed in a day and 1/2 - including removal of the old solar.

6 stars :)
  
 
 
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   Jayden Lind 
 
 
 
 Trustindex verifies that the original source of the review is Google.  Perfect install
  
 
 
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   Ross Davies 
 
 
 
 Trustindex verifies that the original source of the review is Google.  I've recently had a Solar Battery, 3-phase Gateway, EV DC Charger  installed at home, to complement an existing PV array and 3-phase Fronius inverter.  I obtained quotes from three companies for equipment supply and installation.  But to assist others going down this path, I have to say ... do yourself a favour and contact Helcro Solar! Everything about Helcro Solar is high class, in a Solar industry dotted with potholes.  Their quoting, information support, communication and process timeline were excellent.  And above all, the installation was seamless and expertly tailored to suit my specific needs.  Attention to detail and aesthetics was first class.  I think I set a high bar, but my expectations were exceeded.  Well done, Helcro Solar!
  
 
 
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   Will Hone 
 
 
 
 Trustindex verifies that the original source of the review is Google.  Installing a battery is a long, long way from my wheelhouse, but my experience with Helcro Solar has made every step of the way assured. They did so much more than install a unit on the side of our house - beyond the advice on the choices before us (a minefield of decisions and personal uncertainty), they ensured we knew how to run the machine, and get the most from our investment.
This has involved them coming out to our house after installation to make sure I knew how to work the program/app/web-page, and again to help troubleshoot some teething issues.
With Helcro I have never felt alone - their aftermarket service is extraordinary, and I can't possibly finish without mentioning Patrick and Vanessa, both of whom have gone above and beyond to make sure that our battery is running smoothly, and that we understand its operation.
I cannot more highly recommend Helcro Solar. They are superb.
  
 
 
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   David Thomas 
 
 
 
 Trustindex verifies that the original source of the review is Google.  Highly recommend Helcro Solar! They offer exceptional value for money, premium hardware, and superior customer service.Our upgrade was a complex job adding Jinko 475W panels and a GoodWe all-in-one battery/inverter system into our existing setup. Helcro Solar handled the integration seamlessly. Their thorough pre-site planning mapped out the system size and blackout assurance perfectly, meaning there were zero hidden or unexpected costs.From the flexible sales process to the punctual, neat, and professional installation crew, the company's execution was flawless. They provided a comprehensive system handover and excellent after-sales support. A highly reliable company!
  
 
 
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   Grant Daw 
 
 
 
 Trustindex verifies that the original source of the review is Google.  Exceptionally high level of customer support and advice on how to get the best out of my solar and battery setup.  Totally recommend Helcro Solar
  
 
 
      Posted on Google  
   
   Maria Garcia de la Banda 
 
 
 
 Trustindex verifies that the original source of the review is Google.  After receiving several quotes for solar panels and a battery for our house, we decided to go with HelcroSolar based on how well they engaged with us during the entire process and on their reasonable price (not the cheapest, but what we thought was the best value). And we were super impressed with their installation. It was all done in one day, they left everything tidy, and explained the operation of the entire system. But what impressed me the most was that when I complained about the battery not being connected to the under-floor system (something I had requested but did not seem to be in the installer's instructions), they listened politely, contacted their home office, resolved the misunderstanding, and acted by preparing the change and ensuring the necessary person came the next day to make the final modification. It was all super easy and I am extremely happy with the result (it has already been working for more than 2 months). Highly recommended.