Solar repairs in Sale

When a solar system in Sale produces less than it should, smells hot, makes noises or leaks at the roof, the fault is usually in one of a short list of places: the DC isolators, the cabling and connectors, the panels themselves or the roof fixings. A diagnostic visit to find the fault typically costs $150 to $300 per visit, according to Why Solar’s 2026 guide, and the repair is priced once the cause is known. Electrical repairs must be done by a licensed electrician and come with a Certificate of Electrical Safety. Sale Solar takes your enquiry and passes it to an independent local electrician or solar business, which diagnoses and repairs the system on its own account.

Is it safe to keep using the system?

Start here, because some solar faults are a fire risk. Energy Safe Victoria and Solar Victoria list loss of performance, burning smells and unusual noises as warning signs to act on.

• Smoke, flames or a strong burning smell: keep everyone clear of the panels, isolators and inverter and call 000. Do not try to switch anything off by hand if it is hot or smoking.
• Scorch marks, melted plastic or a crackling sound from an isolator: do not touch it. Arrange an urgent inspection by a licensed electrician.
• Output has dropped but nothing looks or smells wrong: the system can usually stay on while you arrange a diagnostic, but get it checked within weeks, not months.

The same Solar Victoria campaign reports that systems four years or older make up about one in five rooftop systems but almost two thirds of solar-related house fires recorded by Energy Safe since July 2021. An older system with a new symptom deserves prompt attention.

What usually goes wrong with a solar system?

Fault	Typical symptoms	Repair cost (Why Solar, 2026)
Faulty DC isolator	Burn marks or a cracked cover on the rooftop or wall isolator, system tripping	$200 to $500
Loose MC4 connector, corroded terminal or damaged cable	Reduced output, an arc fault code, one string dead	$150 to $400
Roof leak at mounting points	Water stains on the ceiling under the array after heavy rain	$200 to $600
Inverter failure	Error codes, no output on a clear day	See the inverter page

Why Solar’s repair guide describes DC isolators as a known weak point in Australian systems. They can fail through heat exposure, water getting in or manufacturing defects, and a faulty isolator is a fire risk that should be replaced straight away.

Wiring faults are often the result of poor installation or animals. Why Solar specifically names possums and birds chewing cables. If you hear animals on the roof near the array, mention it in your enquiry so the repairer checks every exposed cable run, not just the one that failed.

Roof leaks at the mounts tend to show up only in heavy rain. Why Solar describes them as an installation quality issue that should be covered by the workmanship warranty if the original installer still trades. Check your paperwork before paying for the repair yourself.

If the fault is the inverter itself, the decision is usually whether to replace it like-for-like or with a battery ready model; the inverter replacement page covers that choice.

How does a repairer find the fault?

A good diagnostic visit follows a set pattern so the repair addresses the cause rather than the symptom.

1. Read the history. The repairer checks the inverter fault log and your monitoring data to see when output dropped and whether one string or the whole system is affected.
2. Visual inspection. Isolators, cable runs, conduit, connectors and the switchboard are checked for heat damage, cracks, water entry and animal damage.
3. Electrical tests. Open circuit voltage and current on each string, insulation resistance and earth continuity tests show where a fault sits even when it cannot be seen.
4. Panel check. Cracked glass, browning or hot spots point to a damaged panel. A matching replacement panel can be hard to find for older systems.
5. Written findings. You get a list of faults, the repair needed for each and a price.

Ask for the test results in writing. They are useful if you later claim on a warranty or sell the house. Keep them with the original installation paperwork and your Certificate of Electrical Safety, so the next electrician who works on the system can see what was found and what was changed.

When does repair stop making sense?

Why Solar suggests that when a repair costs more than 40% of a replacement component, replacing it is usually better value. For a whole system the picture is similar. If the system is 15 years old or more and has several faults at once, a full assessment of whether to replace the system may save money over patching it. If the system is simply too small for your household now, an upgrade may suit better than repairs, and the solar upgrades page looks at expanding instead.

Cost bands for every job type, including whole-system prices, are collected on the Sale solar and battery cost page.

What licences and paperwork apply to repairs?

Any repair to the electrical side of a solar system is electrical work under the Electricity Safety Act 1998. In Victoria an electrician doing work for a customer must work for a Registered Electrical Contractor, and you should receive a Certificate of Electrical Safety for the repair. Solar Victoria’s safety campaign tells owners to make sure they get one for any electrical repair. You can check the contractor on Energy Safe’s public register before work starts.

Things a careful repairer will not do:

• work on live DC cabling without isolating and testing first
• tape over a damaged connector instead of replacing it
• fit a replacement isolator or connector of a different brand that is not rated to mate with the existing parts
• leave without issuing a certificate for electrical work

A panel cleaner is not a repairer. If the fault is electrical, it needs a licensed electrician, not a cleaning service.

Coastal and rural properties around Sale

For homes by the water at Loch Sport, between Lake Victoria and the Ninety Mile Beach, ask the repairer to look closely at terminals and connectors for corrosion, one of the faults Why Solar lists. A holiday house that sits empty between visits may have no one watching the monitoring app. Farm sheds and outbuildings with long cable runs have more connectors that can work loose. For a property that is not lived in full time, ask the repairer about a monitoring alert so a fault does not run for a whole season unnoticed.

Routine servicing on a schedule is a separate job from fault repairs. The solar panel servicing page explains what a two-yearly service covers.

Next step: describe the fault

To help a repairer decide what to bring, send a solar repair enquiry with:

• your suburb and the address type (house, farm, holiday home)
• what you have noticed and when it started
• photos of the inverter display, the isolators and any visible damage
• the system size and age, and the installer’s name if you know it
• whether the original installer is still trading

A licensed provider who works in your area looks at the details and contacts you about the fault.

Send a job enquiry