01
Inverter faults
Fault codes, failed startup, intermittent operation, no AC output and inverter problems that need electrical diagnosis rather than another sales quote.
Existing Solar PV · Repairs & Fault Finding
Already own the solar? We’ll help fix the bloody thing.
AESS focuses on existing solar PV systems — fault finding, electrical repairs, inverter problems, damaged components and maintenance. We are not trying to sell you another rooftop package when the system you already own may simply need proper diagnosis and repair.
What we look at
A fault code is a clue, not the whole diagnosis.
A stopped inverter might genuinely have failed — or it may be reporting a problem somewhere else in the system. AESS works through the electrical side of the existing PV installation before deciding what actually needs to be repaired or replaced.
02
Tripping & isolation faults
Solar circuits, protective devices or system components that trip, fail to reset or develop electrical insulation and isolation problems.
03
Damaged components
Deteriorated isolators, enclosures, fittings, cabling and other electrical components exposed to years of sun, heat, storms and weather.
04
Low or no generation
Investigate whether the problem is electrical, inverter-related, panel/string related or simply a performance issue that needs to be separated from a genuine electrical fault.
05
Switchboard integration
Check the AC side, circuit protection and connection into the property switchboard where the solar system and the wider electrical installation interact.
06
Storm & damage checks
Electrical inspection after visible damage or a storm-related event before a questionable system is simply switched back on and forgotten.
The AESS solar niche
We are not chasing new-system volume.
AESS has hands-on solar experience, but we deliberately focus on maintaining and repairing systems that are already installed. That means the conversation starts with what is wrong with your existing system rather than how quickly we can sell you another one.
✓
The original installer is gone
You still need an electrician who is comfortable working around PV equipment and understands how the solar installation connects into the rest of the property.
You still need an electrician who is comfortable working around PV equipment and understands how the solar installation connects into the rest of the property.
✓
The inverter has stopped
We can diagnose the existing system and determine whether repair, replacement or another electrical issue is the sensible next step.
We can diagnose the existing system and determine whether repair, replacement or another electrical issue is the sensible next step.
✓
The system is old but still useful
A system does not automatically become worthless because one component has failed. The condition of the whole installation matters.
A system does not automatically become worthless because one component has failed. The condition of the whole installation matters.
✓
You want an electrical answer, not a sales pitch
We assess the fault first and explain what makes sense for the system that is already on the roof.
We assess the fault first and explain what makes sense for the system that is already on the roof.
Inverter replacement
A failed inverter is not always a licence to redesign the whole system.
Where an inverter has genuinely failed, the replacement has to suit the existing array, electrical installation and network connection requirements. The correct scope depends on the existing system and what is changing.
Existing arrayInverter ratingDC input limitsAC protectionExport settingsNetwork requirements
Before changing the inverter
Has the inverter actually failed?A reported inverter error can sometimes be caused by another problem in the PV system or electrical installation.
Does the proposed replacement suit the array?Electrical characteristics of the existing strings and panels need to be compatible with the replacement equipment.
Does the network agreement change?If inverter capacity, export settings or the existing connection arrangement changes, distributor requirements may need to be addressed before the alteration proceeds.
Is the rest of the installation worth retaining?There is little value fitting a new inverter without identifying serious deterioration elsewhere in the existing system.
Solar electrical safety
Turning off the mains does not make the roof wiring dead.
PV modules produce DC voltage whenever they are exposed to sufficient light. Parts of a solar installation can therefore remain energised during daylight even when the normal mains supply has been switched off.
A
Do not dismantle it yourself
Electrical repair and maintenance work on solar PV systems should be carried out by a licensed electrician.
B
Damaged wiring matters
Cracked enclosures, loose cables, exposed conductors and deteriorated equipment can create shock and fire risks and should be assessed rather than ignored.
C
Storm damage needs care
After storm, flood or physical damage, the system should be electrically assessed before it is simply recommissioned.
Maintenance & inspection
Solar equipment spends its life in one of the harshest places on the property.
Queensland sun, heat, wind, dust, rain and storms all act on rooftop equipment, cabling and enclosures. Periodic inspection can pick up deterioration before it becomes a complete failure or a safety problem.
Things owners can notice from the ground
Visible panel damage, loose-looking equipment, cracked isolator or inverter enclosures, damaged cables, persistent inverter faults or a sudden performance change are all good reasons to get the system checked.
Do not climb onto the roof or open electrical equipment to investigate it yourself.
How a solar repair job works
Fault first. Parts second.
1
Tell us the symptom
Send the inverter make/model, fault code or photos and explain what changed or stopped working.
2
Inspect & test
Assess the relevant electrical parts of the existing PV installation and identify the likely fault.
3
Define the repair
Explain whether the system needs a repair, replacement component, inverter change or further specialist work.
4
Repair & recommission
Complete the agreed electrical work and test the system before returning the repaired installation to service.
ToowoombaDarling DownsLockyer ValleyWestern DownsSurrounding SEQ
Common questions
Solar repair FAQs.
Do you install brand-new solar systems?
No. AESS focuses on electrical fault finding, repairs and maintenance of existing PV systems. We are not competing in the new rooftop solar package market.
My original solar company has disappeared. Can you still look at it?
Yes. Existing systems do not have to be serviced only by the original installer. AESS can inspect and fault-find the electrical installation and advise what is required.
Can you replace my inverter?
Where the inverter has failed and a suitable replacement can be used within the existing electrical and network requirements, AESS can undertake replacement work. If the proposed change alters capacity, export settings or the network connection, additional distributor requirements may apply.
My inverter says there is a fault. Does that mean the inverter is dead?
Not necessarily. The displayed code can relate to the inverter itself, the DC array, grid conditions or another electrical issue. Diagnosis comes before assuming the inverter needs replacement.
Can I turn the solar off and work on it myself?
No. Solar PV systems can retain dangerous DC voltage during daylight even when the normal mains supply is off. Electrical maintenance and repairs should be carried out by a licensed electrician.
Can you inspect storm-damaged solar?
Yes. Where the PV installation or associated wiring has been damaged, AESS can inspect the electrical system, make required repairs within scope and check electrical safety before recommissioning.
Queensland Electrical Safety Office guidance states that electrical maintenance and repairs on solar PV systems must be carried out by a licensed electrician and recommends regular inspection of existing systems. Queensland Government guidance also advises contacting the electricity distributor before changes such as inverter upgrades or increased panel capacity.
Existing solar problem?
Send us the inverter fault, not a request for another sales pitch.
Give us the inverter make and model, any fault code, the approximate age of the system and what it is doing. Photos of the inverter display and accessible equipment are useful too.